How to generate and verify signature example code in php

php Generate signature and verify signature

<?php
 　/**
   * 根据原文生成签名内容
   *
   * @param string $data 原文内容
   *
   * @return string
   */
  function sign($data)
  {
    $filePath = &#39;test.p12&#39;;
    if(!file_exists($filePath)) {
      return false;
    }
 
    $pkcs12 = file_get_contents($filePath);
    if (openssl_pkcs12_read($pkcs12, $certs, &#39;读取证书所需要的密码&#39;)) {
      $privateKey = $certs[&#39;pkey&#39;]; //根据实际情况键值可能不同
      $publicKey = $certs[&#39;cert&#39;];　//根据实际情况键值可能不同
      $binary_signature = "";
      if (openssl_sign($data, $binarySignature, $privateKey, OPENSSL_ALGO_SHA1)) {
        return $binarySignature;
      } else {
        return &#39;&#39;;
      }
    } else {
      return &#39;&#39;;
    }
  }
 
  /**
   * 验证签名自己生成的是否正确
   *
   * @param string $data 签名的原文
   * @param string $signature 签名
   *
   * @return bool
   */
  function verifySign($data, $signature)
  {
    $filePath = &#39;test.p12&#39;;
    if(!file_exists($filePath)) {
      return false;
    }
 
    $pkcs12 = file_get_contents($filePath);
    if (openssl_pkcs12_read($pkcs12, $certs, &#39;读取证书所需要的密码&#39;)) {
      $publicKey = $certs[&#39;cert&#39;];
      $ok = openssl_verify($data, $signature, $publicKey);
      if ($ok == 1) {
        return true;
      }
    }
    return false;
  }
 
  /**
   * 验证返回的签名是否正确
   *
   * @param string $data　要验证的签名原文
   * @param string $signature 签名内容
   *
   * @return bool
   */
  function verifyRespondSign($data, $signature)
  {
    $filePath = &#39;allinpay-pds.pem&#39;;
    if(!file_exists($filePath)) {
      return false;
    }
 
    $fp = fopen($filePath, "r");
    $cert = fread($fp, 8192);
    fclose($fp);
    $pubkeyid = openssl_get_publickey($cert);
 
    if(!is_resource($pubkeyid)) {
      return false;
    }
 
    $ok = openssl_verify($data, $signature, $pubkeyid);
    if ($ok == 1) {
      openssl_free_key($pubkeyid);
      return true;
    }
    return false;
  }
?>

openssl_sign The default signature_alg parameter is OPENSSL_ALGO_SHA1

Needed if using DSA encryption method OPENSSL_ALGO_DSS1 parameter

Signature_alg Other parameters

OPENSSL_ALGO_DSS1 (integer)

OPENSSL_ALGO_SHA1 (integer)

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)

The above is the detailed content of How to generate and verify signature example code in php. For more information, please follow other related articles on the PHP Chinese website!