PHP implementation of RSA encryption class instance, Phprsa encryption Instance _php tutorial

PHP implementation of RSA encryption class instance, PHPRSA encryption instance

In this paper, we describe the RSA encryption class implemented by PHP. Share to everyone for your reference. The specific analysis is as follows:

Signing, checking, asymmetric, and decrypting with OpenSSL is required to be used with the files of the certificates of the "." (Crt and PEM).
For various reasons, this class is not very perfect, welcome all kinds of tests!

<?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: '. $msg);//todo}/** * Constructor * * @param string  Public key files (incoming when checking and encrypting) * @param a String private key file (passed in when signing and decrypting) */publicly function __construct ($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 $ret; }/** * Verify signature * * @param string Signature material * @param string Signature value * @param string signature Encoding (BASE64/HEX/BIN) * @return BOOL */PU  Blic function Verify ($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;     Case 0:CASE-1: Default: $ret = false;  }} return $ret; /** * Encryption * * @param string plaintext * @param string cipher (base64/hex/bin) * @param int Fill (PHP is a bug, so currently only supports OPENSSL_PKCS  1_padding) * @return String cipher */Public Function Encrypt ($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, $code);  } return $ret; }/** * Decrypt * * @param string cipher * @param StRing ciphertext Code (BASE64/HEX/BIN) * @param int fill mode (openssl_pkcs1_padding/openssl_no_padding) * @param if bool flips clear text (when Passin G Microsoft cryptoapi-generated RSA cyphertext, revert the bytes in the block) * @return String plaintext */Public function D  Ecrypt ($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 $ret; }//Private method/** * Detect fill type * Encryption only supports pkcs1_padding * decryption support pkcs1_padding and no_padding * * @param int Fill mode * @param string encryption     en/decryption de * @return BOOL */Private Function _checkpadding ($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 (". $d    ATA);    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)? pac  K ("h*", $hex): false;  return $ret; } }

Test Demo:

<?php header (' content-type:text/html; Charset=utf-8; '); Include "rsa.php"; Echo '
'; $a = isset ($_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);
I hope this article is helpful to everyone's PHP programming.
http://www.bkjia.com/PHPjc/974678.html www.bkjia.com true http://www.bkjia.com/PHPjc/974678.html techarticle PHP Implementation of RSA encryption class instances, PHPRSA encryption example of this article describes the implementation of PHP RSA encryption class. Share to everyone for your reference. The specific analysis is as follows: through OpenSSL implementation of the signature, inspection ...
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