using System; namespace Org.BouncyCastle.Crypto.Modes.Gcm { [Obsolete("Will be removed")] public class BasicGcmExponentiator : IGcmExponentiator { private GcmUtilities.FieldElement x; public void Init(byte[] x) { GcmUtilities.AsFieldElement(x, out this.x); } public void ExponentiateX(long pow, byte[] output) { GcmUtilities.One(out GcmUtilities.FieldElement fieldElement); if (pow > 0) { GcmUtilities.FieldElement y = x; do { if ((pow & 1) != 0) GcmUtilities.Multiply(ref fieldElement, ref y); GcmUtilities.Square(ref y); pow >>= 1; } while (pow > 0); } GcmUtilities.AsBytes(ref fieldElement, output); } } }