php RSA公钥私钥加解密和验证用法

现在很多项目中会使用到rsa加解密和验证相关的技术，分别整理代码如下，方便记忆和使用。

【签名和验证】

1 //获得签名 2 function getSign($data) { 3$pem = 'my_rsa_private_key.pem'; 4$privateKey = openssl_get_privatekey(file_get_contents($pem)); 5openssl_sign($data, $sign, $privateKey); 6openssl_free_key($privateKey); 7return base64_encode($sign); 8 } 9 //验证签名10 function checkSign($data, $sign) {11$pem = 'my_rsa_public_key.pem';12$publicKey = openssl_get_publickey(file_get_contents($pem));13$result = openssl_verify($data, $sign, $publicKey);14openssl_free_key($publicKey);15return $result;16 }17 $signData = 'php-rsa';18 $getSign = getSign($data);19 $checkSign = checkSign($data, base64_decode($sign));

20 echo '签名数据：'.$signData;21 echo '获得签名：'.$getSign;22 echo '验证签名：'.$checkSign;

运行结果如下：

签名数据：php-rsa

签名结果：LOVAjWTgHeUvJIK0scVOQO2VlId+1qEuUc70cb7Z/dyMONpheldefkKJXZDF9HelTz/UnwEd00Tre698VGN1IX/sV7WTQJFCY+ypArfNx9mCzaEhMt0U60yGkIPh8wXqNG10YhgzPIw3Lvd/36FnRlTBXOZeJMbxFxhdJmSdeOQ=

验证签名：1

【数据加解密】

1 //加密数据 2 function sslEncrypt($source, $type, $key) { 3$maxlength = 117; 4$output = ''; 5while ($source) { 6 $input = substr($source, 0, $maxlength); 7 $source = substr($source, $maxlength); 8 if ($type == 'private') { 9 $ok = openssl_private_encrypt($input, $encrypted, $key);10 } else {11 $ok = openssl_public_encrypt($input, $encrypted, $key);12 }13 $output .= $encrypted;14}15return $output;16 }17 //解密数据18 function sslDecrypt($source, $type, $key) {19$maxlength = 128;20$output = '';21while ($source) {22 $input = substr($source, 0, $maxlength);23 $source = substr($source, $maxlength);24 if ($type == 'private') {25 $ok = openssl_private_decrypt($input, $out, $key);26 } else {27 $ok = openssl_public_decrypt($input, $out, $key);28 }29 $output .= $out;30}31return $output;32 }33 $data = 'php-rsa';34 $privatekey = openssl_get_privatekey(file_get_contents('my_rsa_private_key.pem'));35 $publickey = openssl_get_publickey(file_get_contents('my_rsa_public_key.pem'));36 $sign = base64_encode(sslEncrypt($data, 'private', $privatekey));37 $jiemi = sslDecrypt(base64_decode($sign), 'public', $publickey);

38 echo '加密数据：'.$data;

39 echo '加密结果：'.$sign;

40 echo '解密数据：'.$jiemi;

运行结果如下：

加密数据：php-rsa

加密结果：aMCpl34vXbofR7a3OPPLElQg6jwG+xbdIsdfYGeVPtIhVp0INMu/0p9M8h+JiBBmGL/WVY9ynbrvNH6QtLXDoW23rm6EWPPKn53EIqt/9jM/fDX8EyaAvhIuaSJ2Q7dxz4hNF+Ykm0XZ5ytsCB71zYVPYfaHyo3Xk+VkZ/JvznE=

解密数据：php-rsa

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