[12.x] Add decrypt and encrypt methods to strings

strings.md

@@ -145,8 +145,10 @@ Laravel includes a variety of functions for manipulating string values. Many of
 [chopEnd](#method-fluent-str-chop-end)
 [contains](#method-fluent-str-contains)
 [containsAll](#method-fluent-str-contains-all)
+[decrypt](#method-fluent-str-decrypt)
 [deduplicate](#method-fluent-str-deduplicate)
 [dirname](#method-fluent-str-dirname)
+[encrypt](#method-fluent-str-encrypt)
 [endsWith](#method-fluent-str-ends-with)
 [exactly](#method-fluent-str-exactly)
 [excerpt](#method-fluent-str-excerpt)
@@ -2140,6 +2142,21 @@ $containsAll = Str::of('This is my name')->containsAll(['MY', 'NAME'], ignoreCas
 // true
 ```
 
+<a name="method-fluent-str-decrypt"></a>
+#### `decrypt` {.collection-method}
+
+The `decrypt` method [decrypts](/docs/{{version}}/encryption) the encrypted string:
+
+```php
+use Illuminate\Support\Str;
+
+$decrypted = $encrypted->decrypt();
+
+// 'secret'
+```
+
+For the inverse of `decrypt`, see the [encrypt](#method-fluent-str-encrypt) method.
+
 <a name="method-fluent-str-deduplicate"></a>
 #### `deduplicate` {.collection-method}
 
@@ -2186,6 +2203,19 @@ $string = Str::of('/foo/bar/baz')->dirname(2);
 // '/foo'
 ```
 
+<a name="method-fluent-str-encrypt"></a>
+#### `encrypt` {.collection-method}
+
+The `encrypt` method [encrypts](/docs/{{version}}/encryption) the string:
+
+```php
+use Illuminate\Support\Str;
+
+$encrypted = Str::of('secret')->encrypt();
+```
+
+For the inverse of `encrypt`, see the [decrypt](#method-fluent-str-decrypt) method.
+
 <a name="method-fluent-str-ends-with"></a>
 #### `endsWith` {.collection-method}