使用SHA512（如C＃）散列密码字符串 [英] hash a password string using SHA512 like C#

问题描述

我正在为我的iPhone应用程序开发登录函数，所以我想使用SHA512哈希算法对密码进行哈希处理，然后将结果作为NSString（结果应该与C＃中的SHA512相同）。在互联网上花了很多时间之后，我仍然没有找到解决方案！ ：（b / b）

有没有人有解决方案和示例代码，请帮助我！
非常感谢！

[Update]
在我的C＃代码中，密码是使用SecureString存储的，所以也许这是因为在objective-c和C＃之间创建不同的字节数组

解决方案

这个函数将使用SHA512对一个字符串进行散列，得到的字符串是散列的十六进制表示形式：

  +（NSString *）createSHA512：（NSString *）source {
 
 const char * s = [source cStringUsingEncoding：NSASCIIStringEncoding]; 
 
 NSData * keyData = [NSData dataWithBytes：s length：strlen（s）]; 
 
 uint8_t digest [CC_SHA512_DIGEST_LENGTH] = {0}; 
 
 CC_SHA512（keyData.bytes，keyData.length，摘要）; 
 
 NSData * out = [NSData dataWithBytes：摘要长度：CC_SHA512_DIGEST_LENGTH]; 
 
 return [out description]; 
} 
  

不要忘记包含更正t header：



  #include< CommonCrypto / CommonDigest.h> 
  




I am developing logon function for my iPhone Application, so I want to hash the password using the SHA512 hashing algorithm then get the result as NSString (the result should be the same with SHA512 in C#). After spending a lot of time in the internet, I still not find out the solution yet! :(

Is there anyone has the solution and sample code, please help me! Thanks a lot!

[Update] In my C# code, the password is stored using SecureString, so maybe it's cause make different byte array between objective-c and C#

解决方案

This function will hash a string using SHA512. The resulting string is a hex representation of the hash:

+ (NSString *) createSHA512:(NSString *)source {

    const char *s = [source cStringUsingEncoding:NSASCIIStringEncoding];

    NSData *keyData = [NSData dataWithBytes:s length:strlen(s)];

    uint8_t digest[CC_SHA512_DIGEST_LENGTH] = {0};

    CC_SHA512(keyData.bytes, keyData.length, digest);

    NSData *out = [NSData dataWithBytes:digest length:CC_SHA512_DIGEST_LENGTH];

    return [out description];
}

Don't forget to include the correct header:

#include <CommonCrypto/CommonDigest.h>

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