PHP RAS Cryptography Class Code

Signing, checking, asymmetric, and decrypting with OpenSSL is required to be used with the files of the certificates of the "." (Crt and PEM).

<?php/** * RSA algorithm class * Signature and Cipher code: Base64 string/16 binary string/binary string stream * Fill mode: pkcs1padding (plus decrypt)/nopadding (decryption) * Notice:only accepts A single block.  Block size is equal to the RSA key size! * If the key length is a small bit, then the encrypted data should be less than 128 bytes, plus the pkcs1padding itself 11 bytes of information, so clear text needs less than 117 bytes * * @author: Linvo * @version: 1.0.0 * @date: 2013/1/     */class rsa{private $pubKey = null;        Private $priKey = null;     /** * Custom error handling */Private Function _error ($msg) {die (' RSA error: '. $msg);//todo}/** * Constructor * * @param string Public key file (passed in when checking and encrypting) * @param a String private key file (passed in when signing and decrypting) */publicly function __construct ( $public _key_file = ', $private _key_file = ') {if ($public _key_file) {$this->_getpublickey ($public         _key_file);         } if ($private _key_file) {$this->_getprivatekey ($private _key_file);      }}/** * Generate Signature * * @param string Signature material * @param string signature Encoding (base64/hex/bin) * @return Signature value */    Public function sign ($data, $code = ' base64 ') {$ret = false;         if (Openssl_sign ($data, $ret, $this->prikey)) {$ret = $this->_encode ($ret, $code);     } return $ret;     }/** * Verify signature * * @param string Signature material * @param string Signature value * @param string signature Encoding (Base64/hex/bin)             * @return BOOL */Public Function verify ($data, $sign, $code = ' base64 ') {$ret = false;         $sign = $this->_decode ($sign, $code);  if ($sign!== false) {switch (openssl_verify ($data, $sign, $this->pubkey)) {Case 1: $ret = True                     Break                  Case 0:CASE-1: Default: $ret = false;     }} return $ret; }/** * Encrypt * * @param string plaintext * @param string cipher (base64/hex/bin) * @param int Fill method (seemingly php has BU G, so currently only supports openssl_pkcs1_padding) * @return String cipher */Public FUNCTIOn Encrypt ($data, $code = ' base64 ', $padding = openssl_pkcs1_padding) {$ret = false;         if (! $this->_checkpadding ($padding, ' en ')) $this->_error (' padding error '); if (Openssl_public_encrypt ($data, $result, $this->pubkey, $padding)) {$ret = $this->_encode ($result, $co         DE);     } return $ret; }/** * Decrypt * * @param string cipher * @param string cipher (base64/hex/bin) * @param int fill mode (openssl_ pkcs1_padding/openssl_no_padding) * @param if bool flips clear text (when passing Microsoft cryptoapi-generated RSA Cyphertext, re Vert the bytes in the block) * @return String plaintext */Public function decrypt ($data, $code = ' base64 ', $padding         = openssl_pkcs1_padding, $rev = False) {$ret = false;         $data = $this->_decode ($data, $code);         if (! $this->_checkpadding ($padding, ' de ') $this->_error (' padding error '); if ($data!== false) {if (Openssl_private_decrypt ($data, $result, $this->prikey, $padding)) {$ret = $rev? RTrim (Strrev ($result), "n"): '. $result;     }} return $ret; }//Private method/** * Detect fill type * Encryption only supports pkcs1_padding * decryption support pkcs1_padding and no_padding * * @para         m int Fill mode * @param string encryption en/decrypt de * @return BOOL */Private Function _checkpadding ($padding, $type) { if ($type = = ' en ') {switch ($padding) {case openssl_pkcs1_padding: $                     ret = true;                 Break             Default: $ret = false; }} else {switch ($padding) {case Openssl_pkcs1_padding:case OPENSSL                     _no_padding: $ret = true;                 Break             Default: $ret = false;     }} return $ret; } Private Function _encode ($data, $code) {SWITCH (Strtolower ($code)) {case ' base64 ': $data = Base64_encode (". $data);             Break                 Case ' hex ': $data = Bin2Hex ($data);             Break     Case ' bin ': Default:} return $data;                 } Private Function _decode ($data, $code) {switch (Strtolower ($code)) {case ' base64 ':                 $data = Base64_decode ($data);             Break                 Case ' hex ': $data = $this->_hex2bin ($data);             Break     Case ' bin ': Default:} return $data;         } Private Function _getpublickey ($file) {$key _content = $this->_readfile ($file);         if ($key _content) {$this->pubkey = Openssl_get_publickey ($key _content);         }} Private Function _getprivatekey ($file) {$key _content = $this->_readfile ($file); if ($key _content) {$This->prikey = Openssl_get_privatekey ($key _content);         }} Private Function _readfile ($file) {$ret = false;         if (!file_exists ($file)) {$this->_error ("The file {$file} is not exists");         } else {$ret = file_get_contents ($file);     } return $ret; } Private Function _hex2bin ($hex = False) {$ret = $hex!== false && preg_match ('/^[0-9a-fa-f]+$/ I ', $hex)?             Pack ("h*", $hex): false;     return $ret;   }          }

Test example

<?php header (' content-type:text/html; Charset=utf-8; ');    Include "rsa.php";    Echo ' <pre> '; $a = isset ($_get[' a ')? $_get[' A ']: ' Test 123 '; $pubfile = ' E:\SSL\CERT\PWD.CRT '; $prifile = ' E:\ssl\cert\pwd.pem ';    $m = new RSA ($pubfile, $prifile); $x = $m->sign ($a); $y = $m->verify ($a, $x); Var_dump ($x, $y);       $x = $m->encrypt ($a); $y = $m->decrypt ($x); Var_dump ($x, $y);  

PHP RAS Cryptography Class Code