PHP uses openssl_verify to verify signature example program

PHP uses openssl_verify to verify signature example program_PHP tutorial

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Release： 2016-07-13 10:48:09

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Let’s take a look at the example program for using openssl_verify to verify signatures in PHP. I hope this article will be helpful to all students.

The code is as follows

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;
    }

}

?>

Copy code

/**

* Verify signature

* TobeVerified The ciphertext of the signature to be verified

* PlainText The plain text of the signature to be verified

* CertFile signer public key certificate

* return Returns true if the verification is successful, false if failed (get the failure reason from the LastErrMsg attribute)

*/
function VerifyMsg($TobeVerified, $PlainText, $CertFile,$signature_alg=OPENSSL_ALGO_SHA1)
{

//Verify signature using public key
$fp=fopen($CertFile,"r");
If(!$fp)
{

//echo "Error Number:-10005, Error Description: ER_FIND_CERT_FAILED (Certificate not found)";
         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 prompts you: Verification successful."
");
         return true;
}
else
{

//echo "Error Number:-10021, Error Description: ER_VERIFY_ERROR (signature verification failed)|".openssl_error_string();
         return false;
}

}

?>

openssl_verify may have three return values 1, 0, -1. Only returning 1 indicates that the signature verification is successful.

http: //www.bkjia.com/PHPjc/632817.html

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Let’s take a look at the example program for using openssl_verify to verify signatures in PHP. I hope this article will be useful to all students. help. The code is as follows Copy code ?php /** * Verify signature...