使用AES在php中加密，并用objective-c解密

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);

以下是一个在php中加密，然后在iphone中解密的例子
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);