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 |
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/**
* 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;
}
}
?>
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Copy code
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/**
* 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;
}
}
?>
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openssl_verify may have three return values 1, 0, -1. Only returning 1 indicates that the signature verification is successful.
$signature_alg defaults to OPENSSL_ALGO_SHA1. If it is DSA encryption, set it to OPENSSL_ALGO_DSS1
http://www.bkjia.com/PHPjc/632817.htmlwww.bkjia.comtrue
http: //www.bkjia.com/PHPjc/632817.htmlLet’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...