Signature Algorithms
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OPENSSL_ALGO_DSS1(integer) -
OPENSSL_ALGO_SHA1(integer) - Used as default algorithm by openssl_sign() and openssl_verify().
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OPENSSL_ALGO_SHA224(integer) -
OPENSSL_ALGO_SHA256(integer) -
OPENSSL_ALGO_SHA384(integer) -
OPENSSL_ALGO_SHA512(integer) -
OPENSSL_ALGO_RMD160(integer) -
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+.
Note:
These constants were added in 5.0.0.
OPENSSL_ALGO_MD2,OPENSSL_ALGO_MD4,OPENSSL_ALGO_MD5,OPENSSL_ALGO_SHA1,OPENSSL_ALGO_DSS1
Note:
These constants were added in 5.4.8.
OPENSSL_ALGO_RMD160,OPENSSL_ALGO_SHA224,OPENSSL_ALGO_SHA256,OPENSSL_ALGO_SHA384,OPENSSL_ALGO_SHA512
Коментарии
It should be noted that the default signature algorithm used by openssl_sign() and openssl_verify (OPENSSL_ALGO_SHA1) is no longer supported by default in OpenSSL Version 3 series.
With an up to date OpenSSL library, one has to run
"update-crypto-policies --set LEGACY"
on the server where the library resides in order to allow these functions to work without the optional alternative algorithm argument.