Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/10527#discussion_r52693618
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/functions.scala ---
@@ -1931,6 +1931,40 @@ object functions extends LegacyFunctions {
new Murmur3Hash(cols.map(_.expr))
}
+ /**
+ * Encrypts input using AES and Returns the result as a binary column.
+ * 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 result will also be null.
+ *
+ * @param input binary column to encrypt input
+ * @param key binary column of 128, 192 or 256 bits key
+ *
+ * @group misc_funcs
+ * @since 2.0.0
+ */
+ def aes_encrypt(input: Column, key: Column): Column = withExpr {
+ AesEncrypt(input.expr, key.expr)
+ }
+
+ /**
+ * Decrypts input using AES and Returns the result as a string column.
+ * 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 result will also be null.
+ *
+ * @param input binary column to decrypt input
+ * @param key binary column of 128, 192 or 256 bits key
+ *
+ * @group misc_funcs
+ * @since 2.0.0
+ */
+ def aes_decrypt(input: Column, key: Column): Column = withExpr {
--- End diff --
Could you have a test case for this?
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