ComputeSHA512Hash

        /// <summary>
        ///     Computes and returns the SHA512 hash of the specified string.
        /// </summary>
        /// <param name="content">The string for which the SHA512 hash is to be computed.</param>
        /// <returns>The SHA512 hash of the specified string.</returns>
        public static string ComputeSHA512Hash(string content)
        {
            return ComputeSHA512Hash(Encoding.ASCII.GetBytes(content));
        }

        /// <summary>
        ///     Computes and returns the SHA512 hash of the specified byte array.
        /// </summary>
        /// <param name="content">The byte array for which the SHA512 hash is to be computed.</param>
        /// <returns>The SHA512 hash of the specified byte array.</returns>
        public static string ComputeSHA512Hash(byte[] content)
        {
            byte[] hash;

            using (SHA512 sha512 = new SHA512Managed())
            {
                hash = sha512.ComputeHash(content);
            }

            StringBuilder stringBuilder = new StringBuilder(128);

            foreach (byte b in hash)
            {
                stringBuilder.Append(b.ToString("X2"));
            }

            return stringBuilder.ToString();
        }