Пример #1
0
        public SafeNCryptSecretHandle DeriveSecretAgreementHandle(ECDiffieHellmanPublicKey otherPartyPublicKey)
        {
            if (otherPartyPublicKey == null)
            {
                throw new ArgumentNullException("otherPartyPublicKey");
            }
            ECDiffieHellmanCngPublicKey key = otherPartyPublicKey as ECDiffieHellmanCngPublicKey;

            if (otherPartyPublicKey == null)
            {
                throw new ArgumentException(System.SR.GetString("Cryptography_ArgExpectedECDiffieHellmanCngPublicKey"));
            }
            using (CngKey key2 = key.Import())
            {
                return(this.DeriveSecretAgreementHandle(key2));
            }
        }
Пример #2
0
        public override byte[] DeriveKeyMaterial(ECDiffieHellmanPublicKey otherPartyPublicKey)
        {
            if (otherPartyPublicKey == null)
            {
                throw new ArgumentNullException("otherPartyPublicKey");
            }
            ECDiffieHellmanCngPublicKey key = otherPartyPublicKey as ECDiffieHellmanCngPublicKey;

            if (otherPartyPublicKey == null)
            {
                throw new ArgumentException(System.SR.GetString("Cryptography_ArgExpectedECDiffieHellmanCngPublicKey"));
            }
            using (CngKey key2 = key.Import())
            {
                return(this.DeriveKeyMaterial(key2));
            }
        }
Пример #3
0
        /// <summary>
        ///     Get a handle to the secret agreement generated between two parties
        /// </summary>
        public SafeNCryptSecretHandle DeriveSecretAgreementHandle(ECDiffieHellmanPublicKey otherPartyPublicKey)
        {
            if (otherPartyPublicKey == null)
            {
                throw new ArgumentNullException("otherPartyPublicKey");
            }

            // We can only work with ECDiffieHellmanCngPublicKeys
            ECDiffieHellmanCngPublicKey otherKey = otherPartyPublicKey as ECDiffieHellmanCngPublicKey;

            if (otherPartyPublicKey == null)
            {
                throw new ArgumentException(SR.GetString(SR.Cryptography_ArgExpectedECDiffieHellmanCngPublicKey));
            }

            using (CngKey importedKey = otherKey.Import()) {
                return(DeriveSecretAgreementHandle(importedKey));
            }
        }
Пример #4
0
        /// <summary>
        ///     Given a second party's public key, derive shared key material
        /// </summary>
        public override byte[] DeriveKeyMaterial(ECDiffieHellmanPublicKey otherPartyPublicKey)
        {
            Contract.Ensures(Contract.Result <byte[]>() != null);
            Contract.Assert(m_kdf >= ECDiffieHellmanKeyDerivationFunction.Hash &&
                            m_kdf <= ECDiffieHellmanKeyDerivationFunction.Tls);

            if (otherPartyPublicKey == null)
            {
                throw new ArgumentNullException("otherPartyPublicKey");
            }

            // We can only work with ECDiffieHellmanCngPublicKeys
            ECDiffieHellmanCngPublicKey otherKey = otherPartyPublicKey as ECDiffieHellmanCngPublicKey;

            if (otherKey == null)
            {
                throw new ArgumentException(SR.GetString(SR.Cryptography_ArgExpectedECDiffieHellmanCngPublicKey));
            }

            using (CngKey import = otherKey.Import()) {
                return(DeriveKeyMaterial(import));
            }
        }