NSString *string = [NSString stringWithFormat:@"%@%@", self.setname, @"we083u41hlksadf34kljalsdfh1ripit"];
    unsigned char*sha1 = [self dgst_sha1:string];
    NSString *string2 = [NSString stringWithFormat:@"%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X",
                         sha1[0], sha1[1], sha1[2], sha1[3], sha1[4], sha1[5], sha1[6], sha1[7],
                         sha1[8], sha1[9], sha1[10], sha1[11], sha1[12], sha1[13], sha1[14], sha1[15], sha1[16],
                         sha1[17], sha1[18], sha1[19]];

    NSString *string3= [string2 substringWithRange:NSMakeRange(0, 0x14)];
    NSMutableString *string4 = [NSMutableString stringWithString:[string3 uppercaseString]];
    for(int i =1; i <5; i++) {
        [string4 insertString:@"-" atIndex:(5*i)-1];
    }
    return string4;