ios - 如何将 NSString 散列为 SHA512

Question

我有一个简短的问题...我正在构建一个社交媒体网站应用程序，我需要散列密码 NSString。我将如何做到这一点？我在应用程序上有密码字段，我想对字符串进行哈希处理并在 SHA512 中对其进行编码以用于 POST 请求。提前致谢，技术达人

Answer 1

已回答:hash a password string using SHA512 like C#

但这是复制粘贴的代码:

#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];
}

或者如果您更喜欢散列输出，试试这个:

+(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;
}