NSData* encUser = [[user uppercaseString] dataUsingEncoding:NSUTF8StringEncoding];
    NSData* encTimestamp = [timestamp dataUsingEncoding:NSUTF8StringEncoding];
    AGHash* agHash = [[AGHash alloc] init:CC_SHA256_DIGEST_LENGTH];
    NSData* encPassword = [agHash digest:password];

    NSMutableData* mutableData = [encUser mutableCopy];
    [mutableData appendData:encPassword];
    [mutableData appendData:encTimestamp];

    NSData* tokenData = [agHash digest:[[NSString alloc] initWithData:mutableData encoding:NSUTF32StringEncoding]];
    NSString* tokenAG = [AGUtil hexString:tokenData];

    NSString* hexUserORG = [NSString stringToHex:[user uppercaseString]];
    NSString* hexTimestampORG = [NSString stringToHex:timestamp];
    NSString* encPassORG = [NSString sha256HashFor:password];
    NSString* sumORG = [NSString stringWithFormat:@"%@%@%@", hexUserORG,encPassORG,hexTimestampORG];

    NSString* tokenORG = [NSString sha256HashFor:sumORG];
    NSString* token = [tokenAG isEqual:tokenORG] ? tokenAG : tokenORG;
    return token;