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PHP Manual [Signature Algorithms]

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PHP Manual || Predefined Constants

OPENSSL_ALGO_DSS1 (integer)
OPENSSL_ALGO_SHA1 (integer)
Used as default algorithm by openssl_sign() and openssl_verify().
OPENSSL_ALGO_SHA224 (integer)
Added in PHP 5.4.8.
OPENSSL_ALGO_SHA256 (integer)
Added in PHP 5.4.8.
OPENSSL_ALGO_SHA384 (integer)
Added in PHP 5.4.8.
OPENSSL_ALGO_SHA512 (integer)
Added in PHP 5.4.8.
OPENSSL_ALGO_RMD160 (integer)
Added in PHP 5.4.8.
OPENSSL_ALGO_MD5 (integer)
OPENSSL_ALGO_MD4 (integer)
OPENSSL_ALGO_MD2 (integer)
As of PHP 5.2.13 and PHP 5.3.2, this constant is only available if PHP is compiled with MD2 support. This requires passing in the -DHAVE_OPENSSL_MD2_H CFLAG when compiling PHP, and enable-md2 when compiling OpenSSL 1.0.0+.


PHP Manual || Predefined Constants