openssl_verify

openssl_verify

(PHP 4 >= 4.0.4, PHP 5)

openssl_verifyVerify signature

说明

int openssl_verify ( string $data , string $signature , mixed $pub_key_id [, int $signature_alg = OPENSSL_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.

参数

data

signature

pub_key_id

signature_alg

For more information see the list of Signature Algorithms.

返回值

Returns 1 if the signature is correct, 0 if it is incorrect, and -1 on error.

更新日志

版本 说明
5.2.0 The signature_alg parameter was added.

范例

Example #1 openssl_verify() example

<?php
// $data and $signature are assumed to contain the data and the signature

// fetch public key from certificate and ready it
$fp fopen("/src/openssl-0.9.6/demos/sign/cert.pem""r");
$cert fread($fp8192);
fclose($fp);
$pubkeyid openssl_get_publickey($cert);

// state whether signature is okay or not
$ok openssl_verify($data$signature$pubkeyid);
if (
$ok == 1) {
    echo 
"good";
} elseif (
$ok == 0) {
    echo 
"bad";
} else {
    echo 
"ugly, error checking signature";
}
// free the key from memory
openssl_free_key($pubkeyid);
?>

参见


  • openssl_cipher_iv_length
  • openssl_csr_export
  • openssl_csr_export_to_file
  • openssl_csr_get_public_key
  • openssl_csr_get_subject
  • openssl_csr_new
  • openssl_csr_sign
  • openssl_decrypt
  • openssl_dh_compute_key
  • openssl_digest
  • openssl_encrypt
  • openssl_error_string
  • openssl_free_key
  • openssl_get_cipher_methods
  • openssl_get_md_methods
  • openssl_get_privatekey
  • openssl_get_publickey
  • openssl_open
  • openssl_pkcs12_export
  • openssl_pkcs12_export_to_file
  • openssl_pkcs12_read
  • openssl_pkcs7_decrypt
  • openssl_pkcs7_encrypt
  • openssl_pkcs7_sign
  • openssl_pkcs7_verify
  • openssl_pkey_export
  • openssl_pkey_export_to_file
  • openssl_pkey_free
  • openssl_pkey_get_details
  • openssl_pkey_get_private
  • openssl_pkey_get_public
  • openssl_pkey_new
  • openssl_private_decrypt
  • openssl_private_encrypt
  • openssl_public_decrypt
  • openssl_public_encrypt
  • openssl_random_pseudo_bytes
  • openssl_seal
  • openssl_sign
  • openssl_verify
  • openssl_x509_checkpurpose
  • openssl_x509_check_private_key
  • openssl_x509_export
  • openssl_x509_export_to_file
  • openssl_x509_free
  • openssl_x509_parse
  • openssl_x509_read
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