mysql加密函数有哪些？

SELECT ENCRYPT('root','salt');

SELECT ENCODE('xufeng','key');

SELECT DECODE(ENCODE('xufeng','key'),'key');#加解密放在一起

SELECT AES_ENCRYPT('root','key');

SELECT AES_DECRYPT(AES_ENCRYPT('root','key'),'key');

SELECT MD5('123456');

SELECT SHA('123456');