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技术QQ交流群:294088839 <?php namespace Api\Controller; use Think\Controller; /** * Created by PhpStorm. * User: Json * Date: 2018/7/19 * Time: 18:15 */ class EasController extends Controller { const KEY=""; const IV =""; /** * pkcs7补码 * @param string $string 明文 * @param int $blocksize Blocksize , 以 byte 为单位 * @return String */ private function addPkcs7Padding($string, $blocksize = 32) { $len = strlen($string); //取得字符串长度 $pad = $blocksize - ($len % $blocksize); //取得补码的长度 $string .= str_repeat(chr($pad), $pad); //用ASCII码为补码长度的字符, 补足最后一段 return $string; } /** * 加密然后base64转码 * * @param String 明文 * @param 加密的初始向量(IV的长度必须和Blocksize一样, 且加密和解密一定要用相同的IV) * @param $key 密钥 */ function aes256cbcEncrypt($str, $iv, $key ) { return base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, $this->addPkcs7Padding($str) , MCRYPT_MODE_CBC, $iv)); } /** * 除去pkcs7 padding * * @param String 解密后的结果 * * @return String */ private function stripPkcs7Padding($string){ $slast = ord(substr($string, -1)); $slastc = chr($slast); $pcheck = substr($string, -$slast); if(preg_match("/$slastc{".$slast."}/", $string)){ $string = substr($string, 0, strlen($string)-$slast); return $string; } else { return false; } } /** * 解密 * * @param String $encryptedText 二进制的密文 * @param String $iv 加密时候的IV * @param String $key 密钥 * @return String */ function aes256cbcDecrypt($encryptedText, $iv, $key) { $encryptedText =base64_decode($encryptedText); return $this->stripPkcs7Padding(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, $encryptedText, MCRYPT_MODE_CBC, $iv)); } function aes128cbcDecrypt($encryptedText, $iv=self::IV, $key=self::KEY) { $encryptedText =base64_decode($encryptedText); return $this->stripPkcs7Padding(mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, $encryptedText, MCRYPT_MODE_CBC, $iv)); } function hexToStr($hex)//十六进制转字符串 { $string=""; for($i=0;$i<strlen($hex)-1;$i+=2) $string.=chr(hexdec($hex[$i].$hex[$i+1])); return $string; } function strToHex($string)//字符串转十六进制 { $hex=""; $tmp=""; for($i=0;$i<strlen($string);$i++) { $tmp = dechex(ord($string[$i])); $hex.= strlen($tmp) == 1 ? "0".$tmp : $tmp; } $hex=strtoupper($hex); return $hex; } function aes128cbcHexDecrypt($encryptedText, $iv=self::IV, $key=self::KEY) { $str = $this->hexToStr($encryptedText); return $this->stripPkcs7Padding(mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, $str, MCRYPT_MODE_CBC, $iv)); } function aes128cbcEncrypt($str, $iv=self::IV, $key=self::KEY ) { // $this->addPkcs7Padding($str,16) $base = (mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key,$this->addPkcs7Padding($str,16) , MCRYPT_MODE_CBC, $iv)); return $this->strToHex($base); } function aes129cbcEncrypt($str, $iv=self::IV, $key=self::KEY ) { // $this->addPkcs7Padding($str,16) $base = base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key,$this->addPkcs7Padding($str,16) , MCRYPT_MODE_CBC, $iv)); return $base; } }