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php 使用openssl_verify验证签名实例程序

Jun 13, 2016 am 09:50 AM
op openssl php one under use about Example us program sign verify

下面我们一起来看看关于php 使用openssl_verify验证签名实例程序,希望本文章对各位同学会有所帮助。

 代码如下 复制代码


/**
 
* 验证签名
 
* TobeVerified 待验证签名的密文
 
* PlainText 待验证签名的明文
 
* CertFile 签名者公钥证书
 
* return 验证成功返回true,失败返回false(从LastErrMsg属性获取失败原因)
 
*/
function VerifyMsg($TobeVerified, $PlainText, $CertFile,$signature_alg=OPENSSL_ALGO_SHA1)
{
 
   
//用公钥验签
    $fp=fopen($CertFile,"r");
    if(!$fp)
    {
       
//echo "Error Number:-10005, Error Description: ER_FIND_CERT_FAILED(找不到证书)";
        return false;
    }
    $pub_key=fread($fp,8192);
    fclose($fp);
    $res = openssl_get_publickey($pub_key);
    if (1==openssl_verify($PlainText,pack("H" . strlen($TobeVerified), $TobeVerified) , $res,$signature_alg))
    {
       
//print("www.bKjia.c0m提示您:验证成功"."
");
        return true;
    }
    else
    {
       
//echo "Error Number:-10021, Error Description: ER_VERIFY_ERROR(验签失败)|".openssl_error_string();
        return false;
    }
 
}
 
?>

openssl_verify 可能有三个返回值1,0,-1,只有返回1表示验证签名成功。

$signature_alg 默认OPENSSL_ALGO_SHA1 ,如果是DSA加密要设置成OPENSSL_ALGO_DSS1

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