diff --git a/xml/System.Security.Cryptography/HMACMD5.xml b/xml/System.Security.Cryptography/HMACMD5.xml
index dcc8b50051f..ed44eb8405b 100644
--- a/xml/System.Security.Cryptography/HMACMD5.xml
+++ b/xml/System.Security.Cryptography/HMACMD5.xml
@@ -567,7 +567,7 @@
         <param name="key">The HMAC key.</param>
         <param name="source">The data to HMAC.</param>
         <param name="destination">The buffer to receive the HMAC value.</param>
-        <param name="bytesWritten">When this method returns, the total number of bytes written into <paramref name="destination" />.</param>
+        <param name="bytesWritten">When this method returns, contains the total number of bytes written into <paramref name="destination" />.</param>
         <summary>Attempts to compute the HMAC of data using the MD5 algorithm.</summary>
         <returns>
           <see langword="false" /> if <paramref name="destination" /> is too small to hold the calculated hash, <see langword="true" /> otherwise.</returns>
diff --git a/xml/System.Security.Cryptography/HMACSHA1.xml b/xml/System.Security.Cryptography/HMACSHA1.xml
index 144fa13f74f..2e610c9a0c1 100644
--- a/xml/System.Security.Cryptography/HMACSHA1.xml
+++ b/xml/System.Security.Cryptography/HMACSHA1.xml
@@ -695,7 +695,7 @@ Releases the unmanaged resources used by the <see cref="T:System.Security.Crypto
         <param name="key">The HMAC key.</param>
         <param name="source">The data to HMAC.</param>
         <param name="destination">The buffer to receive the HMAC value.</param>
-        <param name="bytesWritten">When this method returns, the total number of bytes written into <paramref name="destination" />.</param>
+        <param name="bytesWritten">When this method returns, contains the total number of bytes written into <paramref name="destination" />.</param>
         <summary>Attempts to compute the HMAC of data using the SHA1 algorithm.</summary>
         <returns>
           <see langword="false" /> if <paramref name="destination" /> is too small to hold the calculated hash, <see langword="true" /> otherwise.</returns>
diff --git a/xml/System.Security.Cryptography/HMACSHA512.xml b/xml/System.Security.Cryptography/HMACSHA512.xml
index 903dbe77587..b3b1bcc6f62 100644
--- a/xml/System.Security.Cryptography/HMACSHA512.xml
+++ b/xml/System.Security.Cryptography/HMACSHA512.xml
@@ -631,7 +631,7 @@ public static void Test()
         <param name="key">The HMAC key.</param>
         <param name="source">The data to HMAC.</param>
         <param name="destination">The buffer to receive the HMAC value.</param>
-        <param name="bytesWritten">When this method returns, the total number of bytes written into <paramref name="destination" />.</param>
+        <param name="bytesWritten">When this method returns, contains the total number of bytes written into <paramref name="destination" />.</param>
         <summary>Attempts to compute the HMAC of data using the SHA512 algorithm.</summary>
         <returns>
           <see langword="false" /> if <paramref name="destination" /> is too small to hold the calculated hash, <see langword="true" /> otherwise.</returns>
diff --git a/xml/System.Security.Cryptography/SymmetricAlgorithm.xml b/xml/System.Security.Cryptography/SymmetricAlgorithm.xml
index 273655e269a..5b9af63cf55 100644
--- a/xml/System.Security.Cryptography/SymmetricAlgorithm.xml
+++ b/xml/System.Security.Cryptography/SymmetricAlgorithm.xml
@@ -644,12 +644,27 @@ We recommend that you specify the algorithm by calling the <xref:System.Security
         <Parameter Name="paddingMode" Type="System.Security.Cryptography.PaddingMode" Index="2" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="ciphertext">To be added.</param>
-        <param name="iv">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="ciphertext">The data to decrypt.</param>
+        <param name="iv">The initialization vector.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <summary>Decrypts data using CBC mode with the specified padding mode.</summary>
+        <returns>The decrypted plaintext data.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This method's behavior is defined by <xref:System.Security.Cryptography.SymmetricAlgorithm.TryDecryptCbcCore(System.ReadOnlySpan{System.Byte},System.ReadOnlySpan{System.Byte},System.Span{System.Byte},System.Security.Cryptography.PaddingMode,System.Int32@)>.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.ArgumentNullException">
+          <paramref name="ciphertext" /> or <paramref name="iv" /> is <see langword="null" />.</exception>
+        <exception cref="T:System.ArgumentOutOfRangeException">
+          <paramref name="paddingMode" /> is not a valid padding mode.</exception>
+        <exception cref="T:System.ArgumentException">
+          <paramref name="iv" /> is the incorrect length. Callers are expected to pass an initialization vector that is exactly <see cref="P:System.Security.Cryptography.SymmetricAlgorithm.BlockSize" /> in length, converted to bytes (<c>BlockSize / 8</c>).</exception>
+        <exception cref="T:System.Security.Cryptography.CryptographicException">The ciphertext could not be decrypted successfully.</exception>
       </Docs>
     </Member>
     <Member MemberName="DecryptCbc">
@@ -678,12 +693,25 @@ We recommend that you specify the algorithm by calling the <xref:System.Security
         <Parameter Name="paddingMode" Type="System.Security.Cryptography.PaddingMode" Index="2" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="ciphertext">To be added.</param>
-        <param name="iv">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="ciphertext">The data to decrypt.</param>
+        <param name="iv">The initialization vector.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <summary>Decrypts data using CBC mode with the specified padding mode.</summary>
+        <returns>The decrypted plaintext data.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This method's behavior is defined by <xref:System.Security.Cryptography.SymmetricAlgorithm.TryDecryptCbcCore(System.ReadOnlySpan{System.Byte},System.ReadOnlySpan{System.Byte},System.Span{System.Byte},System.Security.Cryptography.PaddingMode,System.Int32@)>.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.ArgumentOutOfRangeException">
+          <paramref name="paddingMode" /> is not a valid padding mode.</exception>
+        <exception cref="T:System.ArgumentException">
+          <paramref name="iv" /> is the incorrect length. Callers are expected to pass an initialization vector that is exactly <see cref="P:System.Security.Cryptography.SymmetricAlgorithm.BlockSize" /> in length, converted to bytes (<c>BlockSize / 8</c>).</exception>
+        <exception cref="T:System.Security.Cryptography.CryptographicException">The ciphertext could not be decrypted successfully.</exception>
       </Docs>
     </Member>
     <Member MemberName="DecryptCbc">
@@ -713,13 +741,27 @@ We recommend that you specify the algorithm by calling the <xref:System.Security
         <Parameter Name="paddingMode" Type="System.Security.Cryptography.PaddingMode" Index="3" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="ciphertext">To be added.</param>
-        <param name="iv">To be added.</param>
-        <param name="destination">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="ciphertext">The data to decrypt.</param>
+        <param name="iv">The initialization vector.</param>
+        <param name="destination">The buffer to receive the plaintext data.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <summary>Decrypts data into the specified buffer, using CBC mode with the specified padding mode.</summary>
+        <returns>The total number of bytes written to <paramref name="destination" /></returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This method's behavior is defined by <xref:System.Security.Cryptography.SymmetricAlgorithm.TryDecryptCbcCore(System.ReadOnlySpan{System.Byte},System.ReadOnlySpan{System.Byte},System.Span{System.Byte},System.Security.Cryptography.PaddingMode,System.Int32@)>.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.ArgumentOutOfRangeException">
+          <paramref name="paddingMode" /> is not a valid padding mode.</exception>
+        <exception cref="T:System.ArgumentException">
+          <paramref name="iv" /> is the incorrect length. Callers are expected to pass an initialization vector that is exactly <see cref="P:System.Security.Cryptography.SymmetricAlgorithm.BlockSize" /> in length, converted to bytes (<c>BlockSize / 8</c>).</exception>
+        <exception cref="T:System.Security.Cryptography.CryptographicException">The ciphertext could not be decrypted successfully.</exception>
+        <exception cref="T:System.ArgumentException">The buffer in <paramref name="destination" /> is too small to hold the plaintext data.</exception>
       </Docs>
     </Member>
     <Member MemberName="DecryptCfb">
@@ -749,13 +791,36 @@ We recommend that you specify the algorithm by calling the <xref:System.Security
         <Parameter Name="feedbackSizeInBits" Type="System.Int32" Index="3" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="ciphertext">To be added.</param>
-        <param name="iv">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <param name="feedbackSizeInBits">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="ciphertext">The data to decrypt.</param>
+        <param name="iv">The initialization vector.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <param name="feedbackSizeInBits">The feedback size, specified in bits.</param>
+        <summary>Decrypts data using CFB mode with the specified padding mode and feedback size.</summary>
+        <returns>The decrypted plaintext data.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This method's behavior is defined by <xref:System.Security.Cryptography.SymmetricAlgorithm.TryDecryptCfbCore(System.ReadOnlySpan{System.Byte},System.ReadOnlySpan{System.Byte},System.Span{System.Byte},System.Security.Cryptography.PaddingMode,System.Int32,System.Int32@)>.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.ArgumentNullException">
+          <paramref name="ciphertext" /> or <paramref name="iv" /> is <see langword="null" />.</exception>
+        <exception cref="T:System.ArgumentOutOfRangeException">
+          <paramref name="paddingMode" /> is not a valid padding mode.
+
+-or-
+
+<paramref name="feedbackSizeInBits" /> is not positive or represent a whole number of bytes.</exception>
+        <exception cref="T:System.ArgumentException">
+          <paramref name="iv" /> is the incorrect length. Callers are expected to pass an initialization vector that is exactly <see cref="P:System.Security.Cryptography.SymmetricAlgorithm.BlockSize" /> in length, converted to bytes (<c>BlockSize / 8</c>).</exception>
+        <exception cref="T:System.Security.Cryptography.CryptographicException">The ciphertext could not be decrypted successfully.
+
+-or-
+
+The feedback size is not valid for the algorithm.</exception>
       </Docs>
     </Member>
     <Member MemberName="DecryptCfb">
@@ -785,13 +850,34 @@ We recommend that you specify the algorithm by calling the <xref:System.Security
         <Parameter Name="feedbackSizeInBits" Type="System.Int32" Index="3" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="ciphertext">To be added.</param>
-        <param name="iv">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <param name="feedbackSizeInBits">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="ciphertext">The data to decrypt.</param>
+        <param name="iv">The initialization vector.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <param name="feedbackSizeInBits">The feedback size, specified in bits.</param>
+        <summary>Decrypts data using CFB mode with the specified padding mode and feedback size.</summary>
+        <returns>The decrypted plaintext data.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This method's behavior is defined by <xref:System.Security.Cryptography.SymmetricAlgorithm.TryDecryptCfbCore(System.ReadOnlySpan{System.Byte},System.ReadOnlySpan{System.Byte},System.Span{System.Byte},System.Security.Cryptography.PaddingMode,System.Int32,System.Int32@)>.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.ArgumentOutOfRangeException">
+          <paramref name="paddingMode" /> is not a valid padding mode.
+
+-or-
+
+<paramref name="feedbackSizeInBits" /> is not positive or represent a whole number of bytes.</exception>
+        <exception cref="T:System.ArgumentException">
+          <paramref name="iv" /> is the incorrect length. Callers are expected to pass an initialization vector that is exactly <see cref="P:System.Security.Cryptography.SymmetricAlgorithm.BlockSize" /> in length, converted to bytes (<c>BlockSize / 8</c>).</exception>
+        <exception cref="T:System.Security.Cryptography.CryptographicException">The ciphertext could not be decrypted successfully.
+
+-or-
+
+The feedback size is not valid for the algorithm.</exception>
       </Docs>
     </Member>
     <Member MemberName="DecryptCfb">
@@ -822,14 +908,39 @@ We recommend that you specify the algorithm by calling the <xref:System.Security
         <Parameter Name="feedbackSizeInBits" Type="System.Int32" Index="4" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="ciphertext">To be added.</param>
-        <param name="iv">To be added.</param>
-        <param name="destination">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <param name="feedbackSizeInBits">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="ciphertext">The data to decrypt.</param>
+        <param name="iv">The initialization vector.</param>
+        <param name="destination">The buffer to receive the plaintext data.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <param name="feedbackSizeInBits">The feedback size, specified in bits.</param>
+        <summary>Decrypts data into the specified buffer, using CFB mode with the specified padding mode and feedback size.</summary>
+        <returns>The total number of bytes written to <paramref name="destination" />.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This method's behavior is defined by <xref:System.Security.Cryptography.SymmetricAlgorithm.TryDecryptCfbCore(System.ReadOnlySpan{System.Byte},System.ReadOnlySpan{System.Byte},System.Span{System.Byte},System.Security.Cryptography.PaddingMode,System.Int32,System.Int32@)>.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.ArgumentOutOfRangeException">
+          <paramref name="paddingMode" /> is not a valid padding mode.
+
+-or-
+
+<paramref name="feedbackSizeInBits" /> is not positive or represent a whole number of bytes.</exception>
+        <exception cref="T:System.ArgumentException">
+          <paramref name="iv" /> is the incorrect length. Callers are expected to pass an initialization vector that is exactly <see cref="P:System.Security.Cryptography.SymmetricAlgorithm.BlockSize" /> in length, converted to bytes (<c>BlockSize / 8</c>).
+
+-or-
+
+The buffer in <paramref name="destination" /> is too small to hold the plaintext data.</exception>
+        <exception cref="T:System.Security.Cryptography.CryptographicException">The ciphertext could not be decrypted successfully.
+
+-or-
+
+<paramref name="feedbackSizeInBits" /> is not valid for the algorithm.</exception>
       </Docs>
     </Member>
     <Member MemberName="DecryptEcb">
@@ -858,11 +969,24 @@ We recommend that you specify the algorithm by calling the <xref:System.Security
         <Parameter Name="paddingMode" Type="System.Security.Cryptography.PaddingMode" Index="1" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="ciphertext">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="ciphertext">The data to decrypt.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <summary>Decrypts data using ECB mode with the specified padding mode.</summary>
+        <returns>The decrypted plaintext data.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This method's behavior is defined by <xref:System.Security.Cryptography.SymmetricAlgorithm.TryDecryptEcbCore(System.ReadOnlySpan{System.Byte},System.Span{System.Byte},System.Security.Cryptography.PaddingMode,System.Int32@)>.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.ArgumentNullException">
+          <paramref name="ciphertext" /> is <see langword="null" />.</exception>
+        <exception cref="T:System.ArgumentOutOfRangeException">
+          <paramref name="paddingMode" /> is not a valid padding mode.</exception>
+        <exception cref="T:System.Security.Cryptography.CryptographicException">The ciphertext could not be decrypted successfully.</exception>
       </Docs>
     </Member>
     <Member MemberName="DecryptEcb">
@@ -891,11 +1015,22 @@ We recommend that you specify the algorithm by calling the <xref:System.Security
         <Parameter Name="paddingMode" Type="System.Security.Cryptography.PaddingMode" Index="1" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="ciphertext">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="ciphertext">The data to decrypt.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <summary>Decrypts data using ECB mode with the specified padding mode.</summary>
+        <returns>The decrypted plaintext data.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This method's behavior is defined by <xref:System.Security.Cryptography.SymmetricAlgorithm.TryDecryptEcbCore(System.ReadOnlySpan{System.Byte},System.Span{System.Byte},System.Security.Cryptography.PaddingMode,System.Int32@)>.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.ArgumentOutOfRangeException">
+          <paramref name="paddingMode" /> is not a valid padding mode.</exception>
+        <exception cref="T:System.Security.Cryptography.CryptographicException">The ciphertext could not be decrypted successfully.</exception>
       </Docs>
     </Member>
     <Member MemberName="DecryptEcb">
@@ -925,12 +1060,24 @@ We recommend that you specify the algorithm by calling the <xref:System.Security
         <Parameter Name="paddingMode" Type="System.Security.Cryptography.PaddingMode" Index="2" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="ciphertext">To be added.</param>
-        <param name="destination">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="ciphertext">The data to decrypt.</param>
+        <param name="destination">The buffer to receive the plaintext data.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <summary>Decrypts data into the specified buffer, using ECB mode with the specified padding mode.</summary>
+        <returns>The total number of bytes written to <paramref name="destination" /></returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This method's behavior is defined by <xref:System.Security.Cryptography.SymmetricAlgorithm.TryDecryptEcbCore(System.ReadOnlySpan{System.Byte},System.Span{System.Byte},System.Security.Cryptography.PaddingMode,System.Int32@)>.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.ArgumentOutOfRangeException">
+          <paramref name="paddingMode" /> is not a valid padding mode.</exception>
+        <exception cref="T:System.Security.Cryptography.CryptographicException">The ciphertext could not be decrypted successfully.</exception>
+        <exception cref="T:System.ArgumentException">The buffer in <paramref name="destination" /> is too small to hold the plaintext data.</exception>
       </Docs>
     </Member>
     <MemberGroup MemberName="Dispose">
@@ -1084,12 +1231,27 @@ We recommend that you specify the algorithm by calling the <xref:System.Security
         <Parameter Name="paddingMode" Type="System.Security.Cryptography.PaddingMode" Index="2" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="plaintext">To be added.</param>
-        <param name="iv">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="plaintext">The data to encrypt.</param>
+        <param name="iv">The initialization vector.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <summary>Encrypts data using CBC mode with the specified padding mode.</summary>
+        <returns>The encrypted ciphertext data.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This method's behavior is defined by <xref:System.Security.Cryptography.SymmetricAlgorithm.TryEncryptCbcCore(System.ReadOnlySpan{System.Byte},System.ReadOnlySpan{System.Byte},System.Span{System.Byte},System.Security.Cryptography.PaddingMode,System.Int32@)>.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.ArgumentNullException">
+          <paramref name="plaintext" /> or <paramref name="iv" /> is <see langword="null" />.</exception>
+        <exception cref="T:System.ArgumentOutOfRangeException">
+          <paramref name="paddingMode" /> is not a valid padding mode.</exception>
+        <exception cref="T:System.ArgumentException">
+          <paramref name="iv" /> is the incorrect length. Callers are expected to pass an initialization vector that is exactly <see cref="P:System.Security.Cryptography.SymmetricAlgorithm.BlockSize" /> in length, converted to bytes (<c>BlockSize / 8</c>).</exception>
+        <exception cref="T:System.Security.Cryptography.CryptographicException">The plaintext could not be encrypted successfully.</exception>
       </Docs>
     </Member>
     <Member MemberName="EncryptCbc">
@@ -1118,12 +1280,25 @@ We recommend that you specify the algorithm by calling the <xref:System.Security
         <Parameter Name="paddingMode" Type="System.Security.Cryptography.PaddingMode" Index="2" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="plaintext">To be added.</param>
-        <param name="iv">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="plaintext">The data to encrypt.</param>
+        <param name="iv">The initialization vector.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <summary>Encrypts data using CBC mode with the specified padding mode.</summary>
+        <returns>The encrypted ciphertext data.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This method's behavior is defined by <xref:System.Security.Cryptography.SymmetricAlgorithm.TryEncryptCbcCore(System.ReadOnlySpan{System.Byte},System.ReadOnlySpan{System.Byte},System.Span{System.Byte},System.Security.Cryptography.PaddingMode,System.Int32@)>.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.ArgumentOutOfRangeException">
+          <paramref name="paddingMode" /> is not a valid padding mode.</exception>
+        <exception cref="T:System.ArgumentException">
+          <paramref name="iv" /> is the incorrect length. Callers are expected to pass an initialization vector that is exactly <see cref="P:System.Security.Cryptography.SymmetricAlgorithm.BlockSize" /> in length, converted to bytes (<c>BlockSize / 8</c>).</exception>
+        <exception cref="T:System.Security.Cryptography.CryptographicException">The plaintext could not be encrypted successfully.</exception>
       </Docs>
     </Member>
     <Member MemberName="EncryptCbc">
@@ -1153,13 +1328,27 @@ We recommend that you specify the algorithm by calling the <xref:System.Security
         <Parameter Name="paddingMode" Type="System.Security.Cryptography.PaddingMode" Index="3" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="plaintext">To be added.</param>
-        <param name="iv">To be added.</param>
-        <param name="destination">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="plaintext">The data to encrypt.</param>
+        <param name="iv">The initialization vector.</param>
+        <param name="destination">The buffer to receive the ciphertext data.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <summary>Encrypts data into the specified buffer, using CBC mode with the specified padding mode.</summary>
+        <returns>The total number of bytes written to <paramref name="destination" />.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This method's behavior is defined by <xref:System.Security.Cryptography.SymmetricAlgorithm.TryEncryptCbcCore(System.ReadOnlySpan{System.Byte},System.ReadOnlySpan{System.Byte},System.Span{System.Byte},System.Security.Cryptography.PaddingMode,System.Int32@)>.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.ArgumentOutOfRangeException">
+          <paramref name="paddingMode" /> is not a valid padding mode.</exception>
+        <exception cref="T:System.ArgumentException">
+          <paramref name="iv" /> is the incorrect length. Callers are expected to pass an initialization vector that is exactly <see cref="P:System.Security.Cryptography.SymmetricAlgorithm.BlockSize" /> in length, converted to bytes (<c>BlockSize / 8</c>).</exception>
+        <exception cref="T:System.Security.Cryptography.CryptographicException">The plaintext could not be encrypted successfully.</exception>
+        <exception cref="T:System.ArgumentException">The buffer in <paramref name="destination" /> is too small to hold the ciphertext data.</exception>
       </Docs>
     </Member>
     <Member MemberName="EncryptCfb">
@@ -1189,13 +1378,36 @@ We recommend that you specify the algorithm by calling the <xref:System.Security
         <Parameter Name="feedbackSizeInBits" Type="System.Int32" Index="3" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="plaintext">To be added.</param>
-        <param name="iv">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <param name="feedbackSizeInBits">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="plaintext">The data to encrypt.</param>
+        <param name="iv">The initialization vector.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <param name="feedbackSizeInBits">The feedback size, specified in bits.</param>
+        <summary>Encrypts data using CFB mode with the specified padding mode and feedback size.</summary>
+        <returns>The encrypted ciphertext data.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This method's behavior is defined by <xref:System.Security.Cryptography.SymmetricAlgorithm.TryEncryptCfbCore(System.ReadOnlySpan{System.Byte},System.ReadOnlySpan{System.Byte},System.Span{System.Byte},System.Security.Cryptography.PaddingMode,System.Int32,System.Int32@)>.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.ArgumentNullException">
+          <paramref name="plaintext" /> or <paramref name="iv" /> is <see langword="null" />.</exception>
+        <exception cref="T:System.ArgumentOutOfRangeException">
+          <paramref name="paddingMode" /> is not a valid padding mode.
+
+-or-
+
+<paramref name="feedbackSizeInBits" /> is not positive or represent a whole number of bytes.</exception>
+        <exception cref="T:System.ArgumentException">
+          <paramref name="iv" /> is the incorrect length. Callers are expected to pass an initialization vector that is exactly <see cref="P:System.Security.Cryptography.SymmetricAlgorithm.BlockSize" /> in length, converted to bytes (<c>BlockSize / 8</c>).</exception>
+        <exception cref="T:System.Security.Cryptography.CryptographicException">The plaintext could not be encrypted successfully.
+
+-or-
+
+The feedback size is not valid for the algorithm.</exception>
       </Docs>
     </Member>
     <Member MemberName="EncryptCfb">
@@ -1225,13 +1437,34 @@ We recommend that you specify the algorithm by calling the <xref:System.Security
         <Parameter Name="feedbackSizeInBits" Type="System.Int32" Index="3" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="plaintext">To be added.</param>
-        <param name="iv">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <param name="feedbackSizeInBits">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="plaintext">The data to encrypt.</param>
+        <param name="iv">The initialization vector.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <param name="feedbackSizeInBits">The feedback size, specified in bits.</param>
+        <summary>Encrypts data using CFB mode with the specified padding mode and feedback size.</summary>
+        <returns>The encrypted ciphertext data.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This method's behavior is defined by <xref:System.Security.Cryptography.SymmetricAlgorithm.TryEncryptCfbCore(System.ReadOnlySpan{System.Byte},System.ReadOnlySpan{System.Byte},System.Span{System.Byte},System.Security.Cryptography.PaddingMode,System.Int32,System.Int32@)>.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.ArgumentOutOfRangeException">
+          <paramref name="paddingMode" /> is not a valid padding mode.
+
+-or-
+
+<paramref name="feedbackSizeInBits" /> is not positive or represent a whole number of bytes.</exception>
+        <exception cref="T:System.ArgumentException">
+          <paramref name="iv" /> is the incorrect length. Callers are expected to pass an initialization vector that is exactly <see cref="P:System.Security.Cryptography.SymmetricAlgorithm.BlockSize" /> in length, converted to bytes (<c>BlockSize / 8</c>).</exception>
+        <exception cref="T:System.Security.Cryptography.CryptographicException">The plaintext could not be encrypted successfully.
+
+-or-
+
+The feedback size is not valid for the algorithm.</exception>
       </Docs>
     </Member>
     <Member MemberName="EncryptCfb">
@@ -1262,14 +1495,35 @@ We recommend that you specify the algorithm by calling the <xref:System.Security
         <Parameter Name="feedbackSizeInBits" Type="System.Int32" Index="4" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="plaintext">To be added.</param>
-        <param name="iv">To be added.</param>
-        <param name="destination">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <param name="feedbackSizeInBits">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="plaintext">The data to encrypt.</param>
+        <param name="iv">The initialization vector.</param>
+        <param name="destination">The buffer to receive the ciphertext data.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <param name="feedbackSizeInBits">The feedback size, specified in bits.</param>
+        <summary>Encrypts data into the specified buffer, using CFB mode with the specified padding mode and feedback size.</summary>
+        <returns>The total number of bytes written to <paramref name="destination" />.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This method's behavior is defined by <xref:System.Security.Cryptography.SymmetricAlgorithm.TryEncryptCfbCore(System.ReadOnlySpan{System.Byte},System.ReadOnlySpan{System.Byte},System.Span{System.Byte},System.Security.Cryptography.PaddingMode,System.Int32,System.Int32@)>.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.ArgumentOutOfRangeException">
+          <paramref name="paddingMode" /> is not a valid padding mode.
+
+-or-
+
+<paramref name="feedbackSizeInBits" /> is not positive or represent a whole number of bytes.</exception>
+        <exception cref="T:System.ArgumentException">
+          <paramref name="iv" /> is the incorrect length. Callers are expected to pass an initialization vector that is exactly <see cref="P:System.Security.Cryptography.SymmetricAlgorithm.BlockSize" /> in length, converted to bytes (<c>BlockSize / 8</c>).</exception>
+        <exception cref="T:System.Security.Cryptography.CryptographicException">The plaintext could not be encrypted successfully.
+
+-or-
+
+The feedback size is not valid for the algorithm.</exception>
       </Docs>
     </Member>
     <Member MemberName="EncryptEcb">
@@ -1298,11 +1552,24 @@ We recommend that you specify the algorithm by calling the <xref:System.Security
         <Parameter Name="paddingMode" Type="System.Security.Cryptography.PaddingMode" Index="1" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="plaintext">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="plaintext">The data to encrypt.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <summary>Encrypts data using ECB mode with the specified padding mode.</summary>
+        <returns>The encrypted ciphertext data.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This method's behavior is defined by <xref:System.Security.Cryptography.SymmetricAlgorithm.TryEncryptEcbCore(System.ReadOnlySpan{System.Byte},System.Span{System.Byte},System.Security.Cryptography.PaddingMode,System.Int32@)>.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.ArgumentNullException">
+          <paramref name="plaintext" /> is <see langword="null" />.</exception>
+        <exception cref="T:System.ArgumentOutOfRangeException">
+          <paramref name="paddingMode" /> is not a valid padding mode.</exception>
+        <exception cref="T:System.Security.Cryptography.CryptographicException">The plaintext could not be encrypted successfully.</exception>
       </Docs>
     </Member>
     <Member MemberName="EncryptEcb">
@@ -1331,11 +1598,22 @@ We recommend that you specify the algorithm by calling the <xref:System.Security
         <Parameter Name="paddingMode" Type="System.Security.Cryptography.PaddingMode" Index="1" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="plaintext">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="plaintext">The data to encrypt.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <summary>Encrypts data using ECB mode with the specified padding mode.</summary>
+        <returns>The encrypted ciphertext data.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This method's behavior is defined by <xref:System.Security.Cryptography.SymmetricAlgorithm.TryEncryptEcbCore(System.ReadOnlySpan{System.Byte},System.Span{System.Byte},System.Security.Cryptography.PaddingMode,System.Int32@)>.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.ArgumentOutOfRangeException">
+          <paramref name="paddingMode" /> is not a valid padding mode.</exception>
+        <exception cref="T:System.Security.Cryptography.CryptographicException">The plaintext could not be encrypted successfully.</exception>
       </Docs>
     </Member>
     <Member MemberName="EncryptEcb">
@@ -1365,12 +1643,24 @@ We recommend that you specify the algorithm by calling the <xref:System.Security
         <Parameter Name="paddingMode" Type="System.Security.Cryptography.PaddingMode" Index="2" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="plaintext">To be added.</param>
-        <param name="destination">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="plaintext">The data to encrypt.</param>
+        <param name="destination">The buffer to receive the ciphertext data.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <summary>Encrypts data into the specified buffer, using ECB mode with the specified padding mode.</summary>
+        <returns>The total number of bytes written to <paramref name="destination" />.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This method's behavior is defined by <xref:System.Security.Cryptography.SymmetricAlgorithm.TryEncryptEcbCore(System.ReadOnlySpan{System.Byte},System.Span{System.Byte},System.Security.Cryptography.PaddingMode,System.Int32@)>.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.ArgumentOutOfRangeException">
+          <paramref name="paddingMode" /> is not a valid padding mode.</exception>
+        <exception cref="T:System.Security.Cryptography.CryptographicException">The plaintext could not be encrypted successfully.</exception>
+        <exception cref="T:System.ArgumentException">The buffer in <paramref name="destination" /> is too small to hold the ciphertext data.</exception>
       </Docs>
     </Member>
     <Member MemberName="FeedbackSize">
@@ -1619,19 +1909,19 @@ Allows an <see cref="T:System.Object" /> to attempt to free resources and perfor
         <exception cref="T:System.ArgumentOutOfRangeException">
           <paramref name="plaintextLength" /> is a negative number.
 
-- or -
- 
- <paramref name="plaintextLength" /> when padded is too large to represent as a signed 32-bit integer.
+-or-
+
+<paramref name="plaintextLength" /> when padded is too large to represent as a signed 32-bit integer.
+
+-or-
 
-- or -
- 
- <paramref name="paddingMode" /> is not a valid padding mode.</exception>
+<paramref name="paddingMode" /> is not a valid padding mode.</exception>
         <exception cref="T:System.Security.Cryptography.CryptographicException">
           <see cref="P:System.Security.Cryptography.SymmetricAlgorithm.BlockSize" /> is not a positive integer.
 
-- or -
- 
- <see cref="P:System.Security.Cryptography.SymmetricAlgorithm.BlockSize" /> is not a whole number of bytes. It must be divisible by 8.</exception>
+-or-
+
+<see cref="P:System.Security.Cryptography.SymmetricAlgorithm.BlockSize" /> is not a whole number of bytes. It must be divisible by 8.</exception>
         <exception cref="T:System.ArgumentException">The padding mode <see cref="F:System.Security.Cryptography.PaddingMode.None" /> was used, but <paramref name="plaintextLength" /> is not a whole number of blocks.</exception>
       </Docs>
     </Member>
@@ -1679,22 +1969,22 @@ Allows an <see cref="T:System.Object" /> to attempt to free resources and perfor
         <exception cref="T:System.ArgumentOutOfRangeException">
           <paramref name="feedbackSizeInBits" /> is not a positive number.
 
-- or -
- 
- <paramref name="plaintextLength" /> is a negative number.
+-or-
+
+<paramref name="plaintextLength" /> is a negative number.
+
+-or-
 
-- or -
- 
- <paramref name="plaintextLength" /> when padded is too large to represent as a signed 32-bit integer.
+<paramref name="plaintextLength" /> when padded is too large to represent as a signed 32-bit integer.
 
-- or -
+-or-
 
- <paramref name="paddingMode" /> is not a valid padding mode.</exception>
+<paramref name="paddingMode" /> is not a valid padding mode.</exception>
         <exception cref="T:System.ArgumentException">The padding mode <see cref="F:System.Security.Cryptography.PaddingMode.None" /> was used, but <paramref name="plaintextLength" /> is not a whole number of blocks.
 
-- or -
+-or-
 
- <paramref name="feedbackSizeInBits" /> is not a whole number of bytes. It must be divisible by 8.</exception>
+<paramref name="feedbackSizeInBits" /> is not a whole number of bytes. It must be divisible by 8.</exception>
       </Docs>
     </Member>
     <Member MemberName="GetCiphertextLengthEcb">
@@ -1731,19 +2021,19 @@ Allows an <see cref="T:System.Object" /> to attempt to free resources and perfor
         <exception cref="T:System.ArgumentOutOfRangeException">
           <paramref name="plaintextLength" /> is a negative number.
 
-- or -
+-or-
 
- <paramref name="plaintextLength" /> when padded is too large to represent as a signed 32-bit integer.
+<paramref name="plaintextLength" /> when padded is too large to represent as a signed 32-bit integer.
 
-- or -
+-or-
 
- <paramref name="paddingMode" /> is not a valid padding mode.</exception>
+<paramref name="paddingMode" /> is not a valid padding mode.</exception>
         <exception cref="T:System.Security.Cryptography.CryptographicException">
           <see cref="P:System.Security.Cryptography.SymmetricAlgorithm.BlockSize" /> is not a positive integer.
 
-- or -
+-or-
 
- <see cref="P:System.Security.Cryptography.SymmetricAlgorithm.BlockSize" /> is not a whole number of bytes. It must be divisible by 8.</exception>
+<see cref="P:System.Security.Cryptography.SymmetricAlgorithm.BlockSize" /> is not a whole number of bytes. It must be divisible by 8.</exception>
         <exception cref="T:System.ArgumentException">The padding mode <see cref="F:System.Security.Cryptography.PaddingMode.None" /> was used, but <paramref name="plaintextLength" /> is not a whole number of blocks.</exception>
       </Docs>
     </Member>
@@ -2510,14 +2800,28 @@ This member is an explicit interface member implementation. It can be used only
         <Parameter Name="paddingMode" Type="System.Security.Cryptography.PaddingMode" Index="4" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="ciphertext">To be added.</param>
-        <param name="iv">To be added.</param>
-        <param name="destination">To be added.</param>
-        <param name="bytesWritten">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="ciphertext">The data to decrypt.</param>
+        <param name="iv">The initialization vector.</param>
+        <param name="destination">The buffer to receive the plaintext data.</param>
+        <param name="bytesWritten">When this method returns, contains the total number of bytes written to <paramref name="destination" />.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <summary>Attempts to decrypt data into the specified buffer, using CBC mode with the specified padding mode.</summary>
+        <returns>
+          <see langword="true" /> if <paramref name="destination" /> was large enough to receive the decrypted data; otherwise, <see langword="false" />.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This method's behavior is defined by <xref:System.Security.Cryptography.SymmetricAlgorithm.TryDecryptCbcCore(System.ReadOnlySpan{System.Byte},System.ReadOnlySpan{System.Byte},System.Span{System.Byte},System.Security.Cryptography.PaddingMode,System.Int32@)>.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.ArgumentOutOfRangeException">
+          <paramref name="paddingMode" /> is not a valid padding mode.</exception>
+        <exception cref="T:System.ArgumentException">
+          <paramref name="iv" /> is the incorrect length. Callers are expected to pass an initialization vector that is exactly <see cref="P:System.Security.Cryptography.SymmetricAlgorithm.BlockSize" /> in length, converted to bytes (<c>BlockSize / 8</c>).</exception>
+        <exception cref="T:System.Security.Cryptography.CryptographicException">The ciphertext could not be decrypted successfully.</exception>
       </Docs>
     </Member>
     <Member MemberName="TryDecryptCbcCore">
@@ -2549,14 +2853,24 @@ This member is an explicit interface member implementation. It can be used only
         <Parameter Name="bytesWritten" Type="System.Int32" RefType="out" Index="4" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="ciphertext">To be added.</param>
-        <param name="iv">To be added.</param>
-        <param name="destination">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <param name="bytesWritten">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="ciphertext">The data to decrypt.</param>
+        <param name="iv">The initialization vector.</param>
+        <param name="destination">The buffer to receive the plaintext data.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <param name="bytesWritten">When this method returns, contains the total number of bytes written to <paramref name="destination" />.</param>
+        <summary>When overridden in a derived class, attempts to decrypt data into the specified buffer, using CBC mode with the specified padding mode.</summary>
+        <returns>
+          <see langword="true" /> if <paramref name="destination" /> was large enough to receive the decrypted data; otherwise, <see langword="false" />.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+Derived classes must override this and provide an implementation.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.NotSupportedException">A derived class has not provided an implementation.</exception>
       </Docs>
     </Member>
     <Member MemberName="TryDecryptCfb">
@@ -2588,15 +2902,37 @@ This member is an explicit interface member implementation. It can be used only
         <Parameter Name="feedbackSizeInBits" Type="System.Int32" Index="5" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="ciphertext">To be added.</param>
-        <param name="iv">To be added.</param>
-        <param name="destination">To be added.</param>
-        <param name="bytesWritten">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <param name="feedbackSizeInBits">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="ciphertext">The data to decrypt.</param>
+        <param name="iv">The initialization vector.</param>
+        <param name="destination">The buffer to receive the plaintext data.</param>
+        <param name="bytesWritten">When this method returns, contains the total number of bytes written to <paramref name="destination" />.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <param name="feedbackSizeInBits">The feedback size, specified in bits.</param>
+        <summary>Attempts to decrypt data into the specified buffer, using CFB mode with the specified padding mode and feedback size.</summary>
+        <returns>
+          <see langword="true" /> if <paramref name="destination" /> was large enough to receive the decrypted data; otherwise, <see langword="false" />.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This method's behavior is defined by <xref:System.Security.Cryptography.SymmetricAlgorithm.TryDecryptCfbCore(System.ReadOnlySpan{System.Byte},System.ReadOnlySpan{System.Byte},System.Span{System.Byte},System.Security.Cryptography.PaddingMode,System.Int32,System.Int32@)>.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.ArgumentOutOfRangeException">
+          <paramref name="paddingMode" /> is not a valid padding mode.
+
+-or-
+
+<paramref name="feedbackSizeInBits" /> is not positive or represent a whole number of bytes.</exception>
+        <exception cref="T:System.ArgumentException">
+          <paramref name="iv" /> is the incorrect length. Callers are expected to pass an initialization vector that is exactly <see cref="P:System.Security.Cryptography.SymmetricAlgorithm.BlockSize" /> in length, converted to bytes (<c>BlockSize / 8</c>).</exception>
+        <exception cref="T:System.Security.Cryptography.CryptographicException">The ciphertext could not be decrypted successfully.
+
+-or-
+
+<paramref name="feedbackSizeInBits" /> is not valid for the algorithm.</exception>
       </Docs>
     </Member>
     <Member MemberName="TryDecryptCfbCore">
@@ -2629,15 +2965,25 @@ This member is an explicit interface member implementation. It can be used only
         <Parameter Name="bytesWritten" Type="System.Int32" RefType="out" Index="5" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="ciphertext">To be added.</param>
-        <param name="iv">To be added.</param>
-        <param name="destination">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <param name="feedbackSizeInBits">To be added.</param>
-        <param name="bytesWritten">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="ciphertext">The data to decrypt.</param>
+        <param name="iv">The initialization vector.</param>
+        <param name="destination">The buffer to receive the plaintext data.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <param name="feedbackSizeInBits">The feedback size, specified in bits.</param>
+        <param name="bytesWritten">When this method returns, contains the total number of bytes written to <paramref name="destination" />.</param>
+        <summary>When overridden in a derived class, attempts to decrypt data into the specified buffer, using CFB mode with the specified padding mode and feedback size.</summary>
+        <returns>
+          <see langword="true" /> if <paramref name="destination" /> was large enough to receive the decrypted data; otherwise, <see langword="false" />.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+Derived classes must override this and provide an implementation.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.NotSupportedException">A derived class has not provided an implementation.</exception>
       </Docs>
     </Member>
     <Member MemberName="TryDecryptEcb">
@@ -2668,13 +3014,25 @@ This member is an explicit interface member implementation. It can be used only
         <Parameter Name="bytesWritten" Type="System.Int32" RefType="out" Index="3" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="ciphertext">To be added.</param>
-        <param name="destination">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <param name="bytesWritten">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="ciphertext">The data to decrypt.</param>
+        <param name="destination">The buffer to receive the plaintext data.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <param name="bytesWritten">When this method returns, contains the total number of bytes written to <paramref name="destination" />.</param>
+        <summary>Attempts to decrypt data into the specified buffer, using ECB mode with the specified padding mode.</summary>
+        <returns>
+          <see langword="true" /> if <paramref name="destination" /> was large enough to receive the decrypted data; otherwise, <see langword="false" />.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This method's behavior is defined by <xref:System.Security.Cryptography.SymmetricAlgorithm.TryDecryptEcbCore(System.ReadOnlySpan{System.Byte},System.Span{System.Byte},System.Security.Cryptography.PaddingMode,System.Int32@)>.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.ArgumentOutOfRangeException">
+          <paramref name="paddingMode" /> is not a valid padding mode.</exception>
+        <exception cref="T:System.Security.Cryptography.CryptographicException">The ciphertext could not be decrypted successfully.</exception>
       </Docs>
     </Member>
     <Member MemberName="TryDecryptEcbCore">
@@ -2705,13 +3063,23 @@ This member is an explicit interface member implementation. It can be used only
         <Parameter Name="bytesWritten" Type="System.Int32" RefType="out" Index="3" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="ciphertext">To be added.</param>
-        <param name="destination">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <param name="bytesWritten">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="ciphertext">The data to decrypt.</param>
+        <param name="destination">The buffer to receive the plaintext data.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <param name="bytesWritten">When this method returns, contains the total number of bytes written to <paramref name="destination" />.</param>
+        <summary>When overridden in a derived class, attempts to decrypt data into the specified buffer, using ECB mode with the specified padding mode.</summary>
+        <returns>
+          <see langword="true" /> if <paramref name="destination" /> was large enough to receive the decrypted data; otherwise, <see langword="false" />.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+Derived classes must override this and provide an implementation.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.NotSupportedException">A derived class has not provided an implementation.</exception>
       </Docs>
     </Member>
     <Member MemberName="TryEncryptCbc">
@@ -2742,14 +3110,28 @@ This member is an explicit interface member implementation. It can be used only
         <Parameter Name="paddingMode" Type="System.Security.Cryptography.PaddingMode" Index="4" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="plaintext">To be added.</param>
-        <param name="iv">To be added.</param>
-        <param name="destination">To be added.</param>
-        <param name="bytesWritten">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="plaintext">The data to encrypt.</param>
+        <param name="iv">The initialization vector.</param>
+        <param name="destination">The buffer to receive the ciphertext data.</param>
+        <param name="bytesWritten">When this method returns, contains the total number of bytes written to <paramref name="destination" />.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <summary>Attempts to encrypt data into the specified buffer, using CBC mode with the specified padding mode.</summary>
+        <returns>
+          <see langword="true" /> if <paramref name="destination" /> was large enough to receive the encrypted data; otherwise, <see langword="false" />.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This method's behavior is defined by <xref:System.Security.Cryptography.SymmetricAlgorithm.TryEncryptCbcCore(System.ReadOnlySpan{System.Byte},System.ReadOnlySpan{System.Byte},System.Span{System.Byte},System.Security.Cryptography.PaddingMode,System.Int32@)>.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.ArgumentOutOfRangeException">
+          <paramref name="paddingMode" /> is not a valid padding mode.</exception>
+        <exception cref="T:System.ArgumentException">
+          <paramref name="iv" /> is the incorrect length. Callers are expected to pass an initialization vector that is exactly <see cref="P:System.Security.Cryptography.SymmetricAlgorithm.BlockSize" /> in length, converted to bytes (<c>BlockSize / 8</c>).</exception>
+        <exception cref="T:System.Security.Cryptography.CryptographicException">The plaintext could not be encrypted successfully.</exception>
       </Docs>
     </Member>
     <Member MemberName="TryEncryptCbcCore">
@@ -2781,14 +3163,32 @@ This member is an explicit interface member implementation. It can be used only
         <Parameter Name="bytesWritten" Type="System.Int32" RefType="out" Index="4" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="plaintext">To be added.</param>
-        <param name="iv">To be added.</param>
-        <param name="destination">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <param name="bytesWritten">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="plaintext">The data to encrypt.</param>
+        <param name="iv">The initialization vector.</param>
+        <param name="destination">The buffer to receive the ciphertext data.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <param name="bytesWritten">When this method returns, contains the total number of bytes written to <paramref name="destination" />.</param>
+        <summary>When overridden in a derived class, attempts to encrypt data into the specified buffer, using CBC mode with the specified padding mode.</summary>
+        <returns>
+          <see langword="true" /> if <paramref name="destination" /> was large enough to receive the encrypted data; otherwise, <see langword="false" />.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+Derived classes must override this and provide an implementation.
+
+
+Implementations of this method must write precisely
+                 `GetCiphertextLengthCbc(plaintext.Length, paddingMode)` bytes to `destination`
+                 and report that via `bytesWritten`.
+              
+
+
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.NotSupportedException">A derived class has not provided an implementation.</exception>
       </Docs>
     </Member>
     <Member MemberName="TryEncryptCfb">
@@ -2820,15 +3220,37 @@ This member is an explicit interface member implementation. It can be used only
         <Parameter Name="feedbackSizeInBits" Type="System.Int32" Index="5" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="plaintext">To be added.</param>
-        <param name="iv">To be added.</param>
-        <param name="destination">To be added.</param>
-        <param name="bytesWritten">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <param name="feedbackSizeInBits">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="plaintext">The data to encrypt.</param>
+        <param name="iv">The initialization vector.</param>
+        <param name="destination">The buffer to receive the ciphertext data.</param>
+        <param name="bytesWritten">When this method returns, contains the total number of bytes written to <paramref name="destination" />.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <param name="feedbackSizeInBits">The feedback size, specified in bits.</param>
+        <summary>Attempts to encrypt data into the specified buffer, using CFB mode with the specified padding mode and feedback size.</summary>
+        <returns>
+          <see langword="true" /> if <paramref name="destination" /> was large enough to receive the encrypted data; otherwise, <see langword="false" />.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This method's behavior is defined by <xref:System.Security.Cryptography.SymmetricAlgorithm.TryEncryptCfbCore(System.ReadOnlySpan{System.Byte},System.ReadOnlySpan{System.Byte},System.Span{System.Byte},System.Security.Cryptography.PaddingMode,System.Int32,System.Int32@)>.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.ArgumentOutOfRangeException">
+          <paramref name="paddingMode" /> is not a valid padding mode.
+
+-or-
+
+<paramref name="feedbackSizeInBits" /> is not positive or represent a whole number of bytes.</exception>
+        <exception cref="T:System.ArgumentException">
+          <paramref name="iv" /> is the incorrect length. Callers are expected to pass an initialization vector that is exactly <see cref="P:System.Security.Cryptography.SymmetricAlgorithm.BlockSize" /> in length, converted to bytes (<c>BlockSize / 8</c>).</exception>
+        <exception cref="T:System.Security.Cryptography.CryptographicException">The plaintext could not be encrypted successfully.
+
+-or-
+
+The feedback size is not valid for the algorithm.</exception>
       </Docs>
     </Member>
     <Member MemberName="TryEncryptCfbCore">
@@ -2861,15 +3283,33 @@ This member is an explicit interface member implementation. It can be used only
         <Parameter Name="bytesWritten" Type="System.Int32" RefType="out" Index="5" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="plaintext">To be added.</param>
-        <param name="iv">To be added.</param>
-        <param name="destination">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <param name="feedbackSizeInBits">To be added.</param>
-        <param name="bytesWritten">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="plaintext">The data to encrypt.</param>
+        <param name="iv">The initialization vector.</param>
+        <param name="destination">The buffer to receive the ciphertext data.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <param name="feedbackSizeInBits">The feedback size, specified in bits.</param>
+        <param name="bytesWritten">When this method returns, contains the total number of bytes written to <paramref name="destination" />.</param>
+        <summary>When overridden in a derived class, attempts to encrypt data into the specified buffer, using CFB mode with the specified padding mode and feedback size.</summary>
+        <returns>
+          <see langword="true" /> if <paramref name="destination" /> was large enough to receive the encrypted data; otherwise, <see langword="false" />.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+Derived classes must override this and provide an implementation.
+
+
+Implementations of this method must write precisely
+                 `GetCiphertextLengthCfb(plaintext.Length, paddingMode, feedbackSizeInBits)`
+                 bytes to `destination` and report that via `bytesWritten`.
+              
+
+
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.NotSupportedException">A derived class has not provided an implementation.</exception>
       </Docs>
     </Member>
     <Member MemberName="TryEncryptEcb">
@@ -2900,13 +3340,25 @@ This member is an explicit interface member implementation. It can be used only
         <Parameter Name="bytesWritten" Type="System.Int32" RefType="out" Index="3" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="plaintext">To be added.</param>
-        <param name="destination">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <param name="bytesWritten">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="plaintext">The data to encrypt.</param>
+        <param name="destination">The buffer to receive the ciphertext data.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <param name="bytesWritten">When this method returns, contains the total number of bytes written to <paramref name="destination" />.</param>
+        <summary>Attempts to encrypt data into the specified buffer, using ECB mode with the specified padding mode.</summary>
+        <returns>
+          <see langword="true" /> if <paramref name="destination" /> was large enough to receive the encrypted data; otherwise, <see langword="false" />.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This method's behavior is defined by <xref:System.Security.Cryptography.SymmetricAlgorithm.TryEncryptEcbCore(System.ReadOnlySpan{System.Byte},System.Span{System.Byte},System.Security.Cryptography.PaddingMode,System.Int32@)>.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.ArgumentOutOfRangeException">
+          <paramref name="paddingMode" /> is not a valid padding mode.</exception>
+        <exception cref="T:System.Security.Cryptography.CryptographicException">The plaintext could not be encrypted successfully.</exception>
       </Docs>
     </Member>
     <Member MemberName="TryEncryptEcbCore">
@@ -2937,13 +3389,31 @@ This member is an explicit interface member implementation. It can be used only
         <Parameter Name="bytesWritten" Type="System.Int32" RefType="out" Index="3" FrameworkAlternate="net-6.0" />
       </Parameters>
       <Docs>
-        <param name="plaintext">To be added.</param>
-        <param name="destination">To be added.</param>
-        <param name="paddingMode">To be added.</param>
-        <param name="bytesWritten">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="plaintext">The data to encrypt.</param>
+        <param name="destination">The buffer to receive the ciphertext data.</param>
+        <param name="paddingMode">The padding mode used to produce the ciphertext and remove during decryption.</param>
+        <param name="bytesWritten">When this method returns, contains the total number of bytes written to <paramref name="destination" />.</param>
+        <summary>When overridden in a derived class, attempts to encrypt data into the specified buffer, using ECB mode with the specified padding mode.</summary>
+        <returns>
+          <see langword="true" /> if <paramref name="destination" /> was large enough to receive the encrypted data; otherwise, <see langword="false" />.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+Derived classes must override this and provide an implementation.
+
+
+Implementations of this method must write precisely
+                 `GetCiphertextLengthEcb(plaintext.Length, paddingMode)` bytes to `destination`
+                 and report that via `bytesWritten`.
+              
+
+
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.NotSupportedException">A derived class has not provided an implementation.</exception>
       </Docs>
     </Member>
     <Member MemberName="ValidKeySize">