//
//  Util.m
//  goodpk
//
//  Created by 歐特儀 on 2020/6/19.
//  Copyright © 2020 Altob. All rights reserved.
//

#import "Util.h"
#include <CommonCrypto/CommonDigest.h>

@implementation Util

+(NSString*)sha256HashFor:(NSString*)input
{
    const char* str = [input UTF8String];
    unsigned char result[CC_SHA256_DIGEST_LENGTH];
    CC_SHA256(str, strlen(str), result);

    NSMutableString *ret = [NSMutableString stringWithCapacity:CC_SHA256_DIGEST_LENGTH*2];
    for(int i = 0; i<CC_SHA256_DIGEST_LENGTH; i++)
    {
        [ret appendFormat:@"%02x",result[i]];
    }
    
    return [ret substringToIndex:10];
}

@end