Qiniu.Util.Mac._sign C# (CSharp) Method

        private string _sign(byte[] data)
        {
            HMACSHA1 hmac = new HMACSHA1(Encoding.UTF8.GetBytes(this.SecretKey));
            byte[] digest = hmac.ComputeHash(data);
            return StringUtils.urlSafeBase64Encode(digest);
        }