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php ios通用的AES加密方法

2012-12-13 11:22 495 查看

从AES for iphone下载AES库

在不同平台进行AES加密，并使用Base64进行编码，结果有可能不同，但解密之后会一样，所以不要因为在2个平台加密结果不一样而认为自己错了。。。

php加密解密：

<?php

$iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_ECB);

$iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);

$key = 'a16byteslongkey!a16byteslongkey!';

$plaintext = "iphone";

$ciphertext = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $plaintext, MCRYPT_MODE_ECB);

$base64encoded_ciphertext = base64_encode($ciphertext);

echo "ciphertext: ".$base64encoded_ciphertext."<br/>";

$plaintext = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, base64_decode($base64encoded_ciphertext), MCRYPT_MODE_ECB);

echo "plaintext: ".$plaintext."<br/>";

$base64encoded_ciphertext =  "I3chV+E2XUHeLCcJAhBaJQ==";

$plaintext = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, base64_decode($base64encoded_ciphertext), MCRYPT_MODE_ECB);

echo "plaintext: ".trim($plaintext);

?>

iphone加密解密

#import "NSString+AESCrypt.h"
NSString *key = @"a16byteslongkey!a16byteslongkey!";
NSString *plaintext = @"iphone";
NSString *ciphertext = [plaintext AES256EncryptWithKey: key];
NSLog(@"ciphertext: %@", ciphertext);
plaintext = [ciphertext AES256DecryptWithKey: key];
NSLog(@"plaintext: %@", plaintext);

Demo:

php 代码：

<?php
$key = "test_AES_key";

$iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_ECB);
$iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);
$key = md5($key);
$plaintext = "ksfe";

$ciphertext = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $plaintext, MCRYPT_MODE_ECB);
$base64encoded_ciphertext = base64_encode($ciphertext);
echo $base64encoded_ciphertext."<br/>";

//$plaintext = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, base64_decode($base64encoded_ciphertext), MCRYPT_MODE_ECB);
//echo "plaintext: ".$plaintext."<br/>";
?>

iphone 代码：

-(NSString *)md5:(NSString *)str {
const char *cStr = [str UTF8String];
unsigned char result[32];
CC_MD5( cStr, strlen(cStr), result );
return [NSString stringWithFormat:
@"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
result[0], result[1], result[2], result[3],
result[4], result[5], result[6], result[7],
result[8], result[9], result[10], result[11],
result[12], result[13], result[14], result[15]
];
}

#import "NSString+AESCrypt.h"

NSString *strKey = @"test_AES_key";
NSData *chipherData = [NSData dataWithContentsOfURL: [NSURL URLWithString: @"http://192.168.157.1/index_aes.php"]];

NSString *chipherText = [[NSString alloc] initWithData: chipherData encoding: NSUTF8StringEncoding];
NSString *plainText = [chipherText AES256DecryptWithKey: [self md5: strKey]];
NSLog(@"plainText: %@", plainText);

转

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