標籤: md5

PHP 有 md5()、sha1() ... 等等 function，不過現在建議使用 SHA224 以上(註)，在 PHP 要怎麼寫呢？

註：下述摘錄自此篇：Mobilefish.com - MD5, SHA1, SHA224, SHA256, SHA384, SHA512 and RIPEMD160 hash generator

• MD5 is considered cryptographically broken and is unsuitable for further use.
• The SHA1 algorithm might not be secure enough for ongoing use. It is recommended not to use SHA1.
• SHA224: SHA224 produces a 224-bit (28-byte) hash value, typically rendered as a hexadecimal number, 56 digits long.
• SHA256: SHA256 produces a 256-bit (32-byte) hash value, typically rendered as a hexadecimal number, 64 digits long.
• SHA384: SHA384 produces a 384-bit (48-byte) hash value, typically rendered as a hexadecimal number, 96 digits long.
• SHA512: SHA512 produces a 512-bit (64-byte) hash value, typically rendered as a hexadecimal number, 128 digits long.
• RIPEMD160: RIPEMD160 produces a 160-bit (20-byte) hash value, typically rendered as a hexadecimal number, 40 digits long.

閱讀全文〈PHP 使用 SHA256、SHA512 等 演算法的寫法〉