我试图在iOS中加密一个字符串,然后将其发送到TCP服务器。下面展示了Python代码版本和iOS版本,请查看两个版本的输出结果。它们看起来非常相似,但长度不同,我不知道原因。有人能检查一下吗,可能是什么原因?
请注意,Python脚本中的PADDING应该被丢弃,因为我已经给出了长度为16的文本。
Python代码:
#!/usr/bin/env python
from Crypto.Cipher import AES
import base64
import os
# the block size for the cipher object; must be 16, 24, or 32 for AES
BLOCK_SIZE = 16
PADDING = '{'
# one-liner to sufficiently pad the text to be encrypted
pad = lambda s: s + (BLOCK_SIZE - len(s) % BLOCK_SIZE) * PADDING
# one-liners to encrypt/encode and decrypt/decode a string
# encrypt with AES, encode with base64
EncodeAES = lambda c, s: base64.b64encode(c.encrypt(pad(s)))
DecodeAES = lambda c, e: c.decrypt(base64.b64decode(e)).rstrip(PADDING)
secret = "1234567890123456"
# create a cipher object using the random secret
cipher = AES.new(secret)
encoded = EncodeAES(cipher, 'password12345678')
print 'Encrypted string:', encoded
decoded = DecodeAES(cipher, encoded)
print 'Decrypted string:', decoded
输出:
加密字符串: 57AayWF4jKYx7KzGkwudIBZUsn1ULOC0C4c5YF3xeI8=
解密字符串: password12345678
NSString *forKey=@"1234567890123456";
NSString *mystr =@"password12345678";
const char *utfString = [mystr UTF8String];
NSData *aData=[NSData dataWithBytes: utfString length: strlen(utfString)];
aData=[mystr dataUsingEncoding:NSUTF8StringEncoding];
NSData *data;//=[aData AES128EncryptWithKey:forKey];
data=[aData AES128EncryptWithKey:forKey];
NSString *base64 = [data base64EncodedString];
aData=[data AES128DecryptWithKey:forKey];
mystr=[[NSString alloc] initWithData:aData encoding:NSUTF8StringEncoding];
NSLog(@"AES data : %@ \n %@",mystr,base64 );
输出:
AES 数据:password12345678
57AayWF4jKYx7KzGkwudIKNlwA+HErrmiy1Z0szzZds=