我怎样才能将一个NSString散列到SHA512

问题描述

我有一个简单的问题...
我正在构建一个社交媒体网络站点应用程序，我需要散列密码NSString。我怎么做到这一点？我在应用程序的密码字段，并希望散列的字符串和编码在SHA512的POST请求。
在此先感谢，
TechnologyGuy

I have one quick question...I am building a social media network site app and I need to hash the password NSString. How would I accomplish this? I have the password field on the app and would like to hash the string and encode it in SHA512 for the POST request.Thanks in advance,TechnologyGuy

推荐答案

已经回答：

但是这里是复制粘贴的代码：

But here's the copy-pasted code:

#include <CommonCrypto/CommonDigest.h>
+ (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];
}

或者如果你更喜欢哈希输出，试试这个：

Or if you prefer a hashed output, try this:

+(NSString *)createSHA512:(NSString *)string
{
    const char *cstr = [string cStringUsingEncoding:NSUTF8StringEncoding];
    NSData *data = [NSData dataWithBytes:cstr length:string.length];
    uint8_t digest[CC_SHA512_DIGEST_LENGTH];
    CC_SHA512(data.bytes, data.length, digest);
    NSMutableString* output = [NSMutableString  stringWithCapacity:CC_SHA512_DIGEST_LENGTH * 2];

    for(int i = 0; i < CC_SHA512_DIGEST_LENGTH; i++)
        [output appendFormat:@"%02x", digest[i]];
    return output;
}

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