openssl_verify Verify signature &reftitle.description; intopenssl_verify stringdata stringsignature mixedpub_key_id intsignature_algOPENSSL_ALGO_SHA1 openssl_verify verifies that the signature is correct for the specified data using the public key associated with pub_key_id. This must be the public key corresponding to the private key used for signing. &reftitle.parameters; data signature pub_key_id signature_alg For more information see the list of Signature Algorithms. &reftitle.returnvalues; Returns 1 if the signature is correct, 0 if it is incorrect, and -1 on error. &reftitle.changelog; &Version; &Description; 5.0.0 The signature_alg parameter was added. &reftitle.examples; ]]> &reftitle.seealso; openssl_sign