C#和Objective-C MD5加密的问题

[upmxf]

我用C#写了个求MD5的方法:
public static string encryptPasswordWithMd5(string password)
{
MD5 md5Hasher = MD5.Create();
byte[] data = md5Hasher.ComputeHash(Encoding.Unicode.GetBytes(password));
StringBuilder sb = new StringBuilder();

for (int i = 0; i < data.Length; i++)
sb.Append(data[i].ToString("x2"));

return sb.ToString();
}

现在又要用Objective-C实现同样的功能, 我写了方法 ：
- (NSString *) encryptPasswordWithMd5: (NSString *) _password
{
const char * cStr = [_password cStringUsingEncoding: NSUTF16LittleEndianStringEncoding];

unsigned char result[CC_MD5_DIGEST_LENGTH];

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]

];

}


两个方法加密的结果不一样，C#代码加密"admin"的结果是"19a2854144b63a8f7617a6f225019b12"，而objc加密的结果是"0CC175B9C0F1B6A831C399E269772661"，请各位高手们指教哪里有问题。。

[pcjbird]

(⊙o⊙)可能是编码不统一的问题吧~~~

[one2zero]

byte[] data = md5Hasher.ComputeHash(Encoding.Unicode.GetBytes(password));

const char * cStr = [_password cStringUsingEncoding: NSUTF16LittleEndianStringEncoding];

Unicode
UTF16