使用AES在php中加密，并用objective-c解密

_N_了吧唧的_

　　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!';$plaintext = &quot;iphone&quot;;$ciphertext = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $plaintext, MCRYPT_MODE_ECB);$base64encoded_ciphertext = base64_encode($ciphertext);echo &quot;ciphertext: &quot;.$base64encoded_ciphertext.&quot;<br/>&quot;;$plaintext = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, base64_decode($base64encoded_ciphertext), MCRYPT_MODE_ECB);echo &quot;plaintext: &quot;.$plaintext.&quot;<br/>&quot;;$base64encoded_ciphertext =  &quot;I3chV+E2XUHeLCcJAhBaJQ==&quot;;$plaintext = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, base64_decode($base64encoded_ciphertext), MCRYPT_MODE_ECB);echo &quot;plaintext: &quot;.trim($plaintext);?>
iphone加密解密　　#import &quot;NSString+AESCrypt.h&quot;NSString *key = @&quot;a16byteslongkey!a16byteslongkey!&quot;;NSString *plaintext = @&quot;iphone&quot;;NSString *ciphertext = [plaintext AES256EncryptWithKey: key];NSLog(@&quot;ciphertext: %@&quot;, ciphertext);plaintext = [ciphertext AES256DecryptWithKey: key];NSLog(@&quot;plaintext: %@&quot;, 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$key = &quot;test_AES_key&quot;;$iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_ECB);$iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);$key = md5($key);$plaintext = &quot;ksfe&quot;;$ciphertext = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $plaintext, MCRYPT_MODE_ECB);$base64encoded_ciphertext = base64_encode($ciphertext);echo $base64encoded_ciphertext.&quot;<br/>&quot;;//$plaintext = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, base64_decode($base64encoded_ciphertext), MCRYPT_MODE_ECB);//echo &quot;plaintext: &quot;.$plaintext.&quot;<br/>&quot;;?>
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: @&quot;%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x&quot;,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 &quot;NSString+AESCrypt.h&quot;NSString *strKey = @&quot;test_AES_key&quot;;NSData *chipherData = [NSData dataWithContentsOfURL: [NSURL URLWithString: @&quot;http://192.168.157.1/index_aes.php&quot;]];NSString *chipherText = [[NSString alloc] initWithData: chipherData encoding: NSUTF8StringEncoding];NSString *plainText = [chipherText AES256DecryptWithKey: [self md5: strKey]];NSLog(@&quot;plainText: %@&quot;, plainText);