8290463: Fix several comment typos in sun.security.ec

Reviewed-by: xuelei

src/jdk.crypto.ec/share/classes/sun/security/ec/ECDHKeyAgreement.java

@@ -176,7 +176,7 @@ private static void validate(ECOperations ops, ECPublicKey key)
         // (point of infinity).  However, the point of infinity has no
         // affine coordinates, although the point of infinity could
         // be encoded.  Per IEEE 1363.3-2013 (see section A.6.4.1),
-        // the point of inifinity is represented by a pair of
+        // the point of infinity is represented by a pair of
         // coordinates (x, y) not on the curve.  For EC prime finite
         // field (q = p^m), the point of infinity is (0, 0) unless
         // b = 0; in which case it is (0, 1).

src/jdk.crypto.ec/share/classes/sun/security/ec/ECDSAOperations.java

@@ -114,7 +114,7 @@ Optional<ECDSAOperations> forParameters(ECParameterSpec ecParams) {
      * @return the ECDSA signature value
      * @throws IntermediateValueException if the signature cannot be produced
      *      due to an unacceptable intermediate or final value. If this
-     *      exception is thrown, then the caller should discard the nonnce and
+     *      exception is thrown, then the caller should discard the nonce and
      *      try again with an entirely new nonce value.
      */
     public byte[] signDigest(byte[] privateKey, byte[] digest, Seed seed)
@@ -142,7 +142,7 @@ public byte[] signDigest(byte[] privateKey, byte[] digest, Seed seed)
      * @return the ECDSA signature value
      * @throws IntermediateValueException if the signature cannot be produced
      *      due to an unacceptable intermediate or final value. If this
-     *      exception is thrown, then the caller should discard the nonnce and
+     *      exception is thrown, then the caller should discard the nonce and
      *      try again with an entirely new nonce value.
      */
     public byte[] signDigest(byte[] privateKey, byte[] digest, Nonce nonce)

src/jdk.crypto.ec/share/classes/sun/security/ec/ed/EdDSAParameters.java

@@ -85,7 +85,7 @@ public Digester createDigester() {
             return new SHAKE256Digester(114);
         }
 
-        // Ed448 uses 64bytes long hasg for the signature message
+        // Ed448 uses 64bytes long hash for the signature message
         @Override
         public Digester createDigester(int len) {
             return new SHAKE256Digester(len);