我在PHP中有这个三重DES加密代码
$encryption_key = "CE51E06875F7D964";
$data='tokenNo=test&securityCode=111' ;
echo $desEncryptedData = encryptText_3des($data, $encryption_key);//outputs 3des encrypted data
function encryptText_3des($plainText, $key) {
$key = hash("md5", $key, TRUE);
for ($x=0;$x<8;$x++) {
$key = $key.substr($key, $x, 1);
}
$padded = pkcs5_pad($plainText,
mcrypt_get_block_size(MCRYPT_3DES, MCRYPT_MODE_CBC));
$encrypted = base64_encode(mcrypt_encrypt(MCRYPT_3DES, $key, $padded, MCRYPT_MODE_CBC));
return $encrypted;
}
function pkcs5_pad ($text, $blocksize)
{
$pad = $blocksize - (strlen($text) % $blocksize);
return $text . str_repeat(chr($pad), $pad);
}
我可以将数据加密为xcFEvIdLXc2fjhG1i4iPOQu5L6ahxwZVucDOPqeMM2E=
现在我有了密钥，我能将这些数据解密为纯文本格式吗?
我试过了
$encryption_key = "CE51E06875F7D964";
$data='xcFEvIdLXc2fjhG1i4iPOQu5L6ahxwZVucDOPqeMM2E=' ; //encrypted data
echo $desEncryptedData = encryptText_3des($data, $encryption_key);//outputs 3des encrypted data
function encryptText_3des($plainText, $key) {
$key = hash("md5", $key, TRUE);
for ($x=0;$x<8;$x++) {
$key = $key.substr($key, $x, 1);
}
$padded = pkcs5_unpad($plainText,
mcrypt_get_block_size(MCRYPT_3DES, MCRYPT_MODE_CBC));
$encrypted = base64_encode(mcrypt_encrypt(MCRYPT_3DES, $key, $padded, MCRYPT_MODE_CBC));
return $encrypted;
}
function pkcs5_unpad($text)
{
$pad = ord($text{strlen($text)-1});
if ($pad > strlen($text)) return false;
if (strspn($text, chr($pad), strlen($text) - $pad) != $pad) return false;
return substr($text, 0, -1 * $pad);
}
但是我做不到。我所做的是错的吗?请给我一个解密的方法?加密密钥本身是否用于在三重DES中解密数据?请帮助
对于PHP 7.1及以上版本，mcrypt函数已弃用。下面是使用openssl_encrypt
的替代方法$ciphertext = openssl_encrypt('string to be encrypted', 'DES-EDE3', 'key', OPENSSL_RAW_DATA);
$ciphertext = base64_encode($ciphertext);
您可以使用此在线三重DES加密工具进行交叉检查。
对于其他可用的密码，可以调用PHP方法openssl_get_cipher_methods()
解决方案:
public function encrypt($data, $secret)
{
//Generate a key from a hash
$key = md5(utf8_encode($secret), true);
//Take first 8 bytes of $key and append them to the end of $key.
$key .= substr($key, 0, 8);
//Pad for PKCS7
$blockSize = mcrypt_get_block_size('tripledes', 'ecb');
$len = strlen($data);
$pad = $blockSize - ($len % $blockSize);
$data .= str_repeat(chr($pad), $pad);
//Encrypt data
$encData = mcrypt_encrypt('tripledes', $key, $data, 'ecb');
return base64_encode($encData);
}
public function decrypt($data, $secret)
{
//Generate a key from a hash
$key = md5(utf8_encode($secret), true);
//Take first 8 bytes of $key and append them to the end of $key.
$key .= substr($key, 0, 8);
$data = base64_decode($data);
$data = mcrypt_decrypt('tripledes', $key, $data, 'ecb');
$block = mcrypt_get_block_size('tripledes', 'ecb');
$len = strlen($data);
$pad = ord($data[$len-1]);
return substr($data, 0, strlen($data) - $pad);
}
问候。
https://github.com/iam-raihan96/3DES-ECB-Cryptography-in-PHP
这里我写了3DES-ECB Cryptography in PHP在那里你会得到两个类文件"Crypt_mcrypt"使用"mcrypt"answers"Crypt_openssl"使用"openssl"。所以你可以使用任何一个，但它是
强烈建议使用"Crypt_openssl"
如果你在你的代码中键入单词mcrypt，你可能犯了一个错误。尽管可以提供构建在mcrypt之上的相对安全的加密库(早期版本的mcrypt/php-encryption就是这样做的)，但是将代码切换到openssl将提供更好的安全性、性能、可维护性和可移植性。
嘿@black buddy解密函数是完美的问题是你需要通过函数encrypt传递加密的数据
<?php
$encryption_key = "CE51E06875F7D964";
$data='tokenNo=test&securityCode=111' ;
// the below will return the encoded data you need to put the value in the variable $asl.
echo encrypt($data,$encryption_key);
function encrypt($data, $secret)
{
//Generate a key from a hash
$key = md5(utf8_encode($secret), true);
//Take first 8 bytes of $key and append them to the end of $key.
$key .= substr($key, 0, 8);
//Pad for PKCS7
$blockSize = mcrypt_get_block_size('tripledes', 'ecb');
$len = strlen($data);
$pad = $blockSize - ($len % $blockSize);
$data .= str_repeat(chr($pad), $pad);
//Encrypt data
$encData = mcrypt_encrypt('tripledes', $key, $data, 'ecb');
return base64_encode($encData);
}
//the below is the encryption of $data = 'token.....' which there above
$asl = 'xcFEvIdLXc0LX+lk46iIFY09GF+FL+SWM0PTNw669VE=';
// this echo will provide you the $data which is there in the begining
echo decrypt($asl , $encryption_key);
function decrypt($data, $secret)
{
//Generate a key from a hash
$key = md5(utf8_encode($secret), true);
//Take first 8 bytes of $key and append them to the end of $key.
$key .= substr($key, 0, 8);
$data = base64_decode($data);
$data = mcrypt_decrypt('tripledes', $key, $data, 'ecb');
$block = mcrypt_get_block_size('tripledes', 'ecb');
$len = strlen($data);
$pad = ord($data[$len-1]);
return substr($data, 0, strlen($data) - $pad);
}
?>