Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/10527#discussion_r51175633 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/misc.scala --- @@ -453,3 +455,131 @@ case class Murmur3Hash(children: Seq[Expression], seed: Int) extends Expression } } } + +/** + * A function that encrypts input using AES. Key lengths of 128, 192 or 256 bits can be used. + * 192 and 256 bits keys can be used if Java Cryptography Extension (JCE) Unlimited Strength + * Jurisdiction Policy Files are installed. If either argument is NULL or the key length is + * not one of the permitted values, the return value is NULL. + */ +@ExpressionDescription( + usage = + """_FUNC_(input, key) - Encrypts input using AES. Key lengths of 128, 192 or 256 bits can + be used. 192 and 256 bits keys can be used if Java Cryptography Extension (JCE) Unlimited Strength + Jurisdiction Policy Files are installed. If either argument is NULL or the key length is not one + of the permitted values, the return value is NULL.""", + extended = """> SELECT Base64(_FUNC_('ABC', '1234567890123456')); --- End diff -- we should follow the style of other classes in this file, i.e. use double quotation marks and `\n`
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