Doris 内置了如下加密和脱敏函数。详细使用，请参考 SQL 手册。

AES_ENCRYPT

Aes 加密函数。该函数与 MySQL 中的 AES_ENCRYPT 函数行为一致。默认采用 AES_128_ECB 算法，padding 模式为 PKCS7。底层使用 OpenSSL 库进行加密。Reference: https://dev.mysql.com/doc/refman/8.0/en/encryption-functions.html#function_aes-decrypt

select to_base64(aes_encrypt('text','F3229A0B371ED2D9441B830D21A390C3'));
+--------------------------------+
| to_base64(aes_encrypt('text')) |
+--------------------------------+
| wr2JEDVXzL9+2XtRhgIloA==       |
+--------------------------------+
1 row in set (0.01 sec)

AES_DECRYPT

Aes 解密函数。该函数与 MySQL 中的 AES_DECRYPT 函数行为一致。默认采用 AES_128_ECB 算法，padding 模式为 PKCS7。底层使用 OpenSSL 库进行加密。

select aes_decrypt(from_base64('wr2JEDVXzL9+2XtRhgIloA=='),'F3229A0B371ED2D9441B830D21A390C3');
+------------------------------------------------------+
| aes_decrypt(from_base64('wr2JEDVXzL9+2XtRhgIloA==')) |
+------------------------------------------------------+
| text                                                 |
+------------------------------------------------------+
1 row in set (0.01 sec)

MD5

计算 MD5 128-bit

MySQL [(none)]> select md5("abc");
+----------------------------------+
| md5('abc')                       |
+----------------------------------+
| 900150983cd24fb0d6963f7d28e17f72 |
+----------------------------------+
1 row in set (0.013 sec)

MD5SUM

计算多个字符串 MD5 128-bit

MySQL > select md5("abcd");
+----------------------------------+
| md5('abcd')                      |
+----------------------------------+
| e2fc714c4727ee9395f324cd2e7f331f |
+----------------------------------+
1 row in set (0.011 sec)
MySQL > select md5sum("ab","cd");
+----------------------------------+
| md5sum('ab', 'cd')               |
+----------------------------------+
| e2fc714c4727ee9395f324cd2e7f331f |
+----------------------------------+
1 row in set (0.008 sec)

SM4_ENCRYPT

SM4 加密函数

MySQL > select TO_BASE64(SM4_ENCRYPT('text','F3229A0B371ED2D9441B830D21A390C3'));
+--------------------------------+
| to_base64(sm4_encrypt('text')) |
+--------------------------------+
| aDjwRflBrDjhBZIOFNw3Tg==       |
+--------------------------------+
1 row in set (0.010 sec)
MySQL > set block_encryption_mode="SM4_128_CBC";
Query OK, 0 rows affected (0.001 sec)
MySQL > select to_base64(SM4_ENCRYPT('text','F3229A0B371ED2D9441B830D21A390C3', '0123456789'));
+----------------------------------------------------------------------------------+
| to_base64(sm4_encrypt('text', 'F3229A0B371ED2D9441B830D21A390C3', '0123456789')) |
+----------------------------------------------------------------------------------+
| G7yqOKfEyxdagboz6Qf01A==                                                         |
+----------------------------------------------------------------------------------+
1 row in set (0.014 sec)

SM3

计算 SM3 256-bit

MySQL > select sm3("abcd");
+------------------------------------------------------------------+
| sm3('abcd')                                                      |
+------------------------------------------------------------------+
| 82ec580fe6d36ae4f81cae3c73f4a5b3b5a09c943172dc9053c69fd8e18dca1e |
+------------------------------------------------------------------+
1 row in set (0.009 sec)

SM3SUM

计算多个字符串 SM3 256-bit

MySQL > select sm3("abcd");
+------------------------------------------------------------------+
| sm3('abcd')                                                      |
+------------------------------------------------------------------+
| 82ec580fe6d36ae4f81cae3c73f4a5b3b5a09c943172dc9053c69fd8e18dca1e |
+------------------------------------------------------------------+
1 row in set (0.009 sec)
MySQL > select sm3sum("ab","cd");
+------------------------------------------------------------------+
| sm3sum('ab', 'cd')                                               |
+------------------------------------------------------------------+
| 82ec580fe6d36ae4f81cae3c73f4a5b3b5a09c943172dc9053c69fd8e18dca1e |
+------------------------------------------------------------------+
1 row in set (0.009 sec)

SHA

使用 SHA1 算法对信息进行摘要处理。

mysql> select sha("123");
+------------------------------------------+
| sha1('123')                              |
+------------------------------------------+
| 40bd001563085fc35165329ea1ff5c5ecbdbbeef |
+------------------------------------------+
1 row in set (0.13 sec)

SHA2

使用 SHA2 对信息进行摘要处理。

mysql> select sha2('abc', 224);
+----------------------------------------------------------+
| sha2('abc', 224)                                         |
+----------------------------------------------------------+
| 23097d223405d8228642a477bda255b32aadbce4bda0b3f7e36c9da7 |
+----------------------------------------------------------+
1 row in set (0.13 sec)
mysql> select sha2('abc', 384);
+--------------------------------------------------------------------------------------------------+
| sha2('abc', 384)                                                                                 |
+--------------------------------------------------------------------------------------------------+
| cb00753f45a35e8bb5a03d699ac65007272c32ab0eded1631a8b605a43ff5bed8086072ba1e7cc2358baeca134c825a7 |
+--------------------------------------------------------------------------------------------------+
1 row in set (0.13 sec)
mysql> select sha2(NULL, 512);
+-----------------+
| sha2(NULL, 512) |
+-----------------+
| NULL            |
+-----------------+
1 row in set (0.09 sec)

DIGITAL_MASKING

别名函数，原始函数为 concat(left(id,3),'****',right(id,4))。

将输入的 digital_number 进行脱敏处理，返回遮盖脱敏后的结果。digital_number 为 BIGINT 数据类型。

将手机号码进行脱敏处理

mysql select digital_masking(13812345678);
+------------------------------+
| digital_masking(13812345678) |
+------------------------------+
| 138****5678                  |
+------------------------------+