phpRsa签名算法⼀：加签验签
class RsaController extends Controller{
/**
* RSA签名
* @param $data 待签名数据
* @param $private_key 私钥字符串
* return 签名结果
*/
public function rsaSign($data, $private_key) {
// $search = [
/
/ "-----BEGIN RSA PRIVATE KEY-----",
// "-----END RSA PRIVATE KEY-----",
// "\n",
// "\r",
// "\r\n"
// ];
// $private_key=str_replace($search,"",$private_key);
// $private_key=$search[0] . PHP_EOL . wordwrap($private_key, 64, "\n", true) . PHP_EOL . $search[1];            $res=openssl_get_privatekey($private_key);
if($res)
{
openssl_sign($data, $sign,$res);
openssl_free_key($res);
}else {
exit("私钥格式有误");
}
$sign = base64_encode($sign);
return $sign;
}
/**
* RSA验签
* @param $data 待签名数据
* @param $public_key 公钥字符串
* @param $sign 要校对的的签名结果
* return 验证结果
*/
public function rsaCheck($data, $public_key, $sign)  {
// $search = [
// "-----BEGIN PUBLIC KEY-----",
// "-----END PUBLIC KEY-----",
// "\n",
// "\r",
// "\r\n"
// ];
/
/ $public_key=str_replace($search,"",$public_key);
// $public_key=$search[0] . PHP_EOL . wordwrap($public_key, 64, "\n", true) . PHP_EOL . $search[1];            $res=openssl_get_publickey($public_key);
if($res)签名字符串是什么
{
$result = (bool)openssl_verify($data, base64_decode($sign), $res);
openssl_free_key($res);
}else{
exit("公钥格式有误!");
}
return $result;
}
}
View Code
⼆：加签验签
$data为加签数据
Rsa SHA256 加签:
//Rsa SHA256
$priKey = file_get_contents(__DIR__.'/file.pem');
$privKeyId = openssl_pkey_get_private($priKey);
$signature = '';
$algo = "SHA256";
openssl_sign($data, $signature, $privKeyId, $algo);
openssl_free_key($privKeyId);
$bs =  base64_encode($signature);
View Code
Rsa SHA1  or  Rsa 加签:
//Rsa SHA1 or Rsa
$priKey = file_get_contents(__DIR__.'/file.pem');
$privKeyId = openssl_pkey_get_private($priKey);
$signature = '';
openssl_sign($data, $signature, $privKeyId);
openssl_free_key($privKeyId);
$bs =  base64_encode($signature);
View Code
$r = curl($url, "POST", $data, $bs);
验签：
/**
*验签
* @param $data 待验签数据
* @param $sign 签名字符串(之前签名⽣成的$bs)
* @param $pubKey 公钥字符串
* @return bool
*/
$pubKey = file_get_contents(__DIR__.'/pub.key'); //读取公钥
$pKey = checkSign($pubKey,$sign ,$data);
function checkSign($pubKey,$sign,$toSign){
$publicKeyId = openssl_pkey_get_public($pubKey);
$result = openssl_verify($toSign, base64_decode($sign), $publicKeyId);        openssl_free_key($publicKeyId);
return$result === 1 ? true : false;
}
View Code
三：加密解密，解决长度超出返回false问题
$encrypt_data = encrypt($data,$public_key);
$decrypt_data = decrypt($encrypt_data,$private_key);
// 公钥加密数据
function encrypt($originalData,$pubkey){
$crypto = '';
foreach (str_split($originalData, 117) as $chunk) {
openssl_public_encrypt($chunk, $encryptData, $pubkey);
$crypto .= $encryptData;
}
return base64_encode($crypto);
}
// 公钥解密数据
function decrypt($encryptData,$privkey){
$crypto = '';
foreach (str_split(base64_decode($encryptData), 128) as $chunk) {
openssl_private_decrypt($chunk, $decryptData, $privkey);
$crypto .= $decryptData;
}
return $crypto;
}
View Code

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