pg encrypt
时间: 2023-09-25 12:14:45 浏览: 58
pg_encrypt函数是PostgreSQL中的一个加密函数,用于对数据进行加密。它接受三个参数:待加密的明文、加密密钥、加密算法。通过调用该函数可以将明文数据加密为密文数据。与之对应的是pg_decrypt函数,可以将密文数据解密为明文数据。它也接受三个参数:待解密的密文、解密密钥、解密算法。中的示例中,select encrypt('123456','aa','aes')表示使用密钥'aa'和AES算法将字符串'123456'加密。得到的密文为'\x39c3c665757a0ff973b83fb98cc3d63f'。而select convert_from(decrypt('\x39c3c665757a0ff973b83fb98cc3d63f','aa','aes'),'SQL_ASCII')表示使用密钥'aa'和AES算法将密文'\x39c3c665757a0ff973b83fb98cc3d63f'解密,得到的明文为'123456'。中的示例中,encode(encrypt(cast('abcd' as bytea),cast('key' as bytea),'aes'),'escape')表示使用密钥'key'和AES算法将字符串'abcd'加密。得到的密文为'\360\307i\235 \257J\226o|F\341s'。而convert_from(decrypt(cast('\360\307i\235 \257J\226o|F\341s' as bytea), cast('key' as bytea),'aes'),'sql_ascii')表示使用密钥'key'和AES算法将密文'\360\307i\235 \257J\226o|F\341s'解密,得到的明文为'abcd'。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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