/// <inheritdoc />
public IECDiffieHellmanPublicKey FromByteArray(byte[] publicKey)
{
SafeAlgorithmHandle algorithm;
var keyBlob = new EccKeyBlob(publicKey);
switch (keyBlob.Magic)
{
case EccKeyBlobMagicNumbers.BCRYPT_ECDH_PUBLIC_P256_MAGIC:
algorithm = ECDiffieHellmanFactory.BCryptOpenAlgorithmProvider(256);
break;
case EccKeyBlobMagicNumbers.BCRYPT_ECDH_PUBLIC_P384_MAGIC:
algorithm = ECDiffieHellmanFactory.BCryptOpenAlgorithmProvider(384);
break;
case EccKeyBlobMagicNumbers.BCRYPT_ECDH_PUBLIC_P521_MAGIC:
algorithm = ECDiffieHellmanFactory.BCryptOpenAlgorithmProvider(521);
break;
default:
throw new ArgumentException("Unexpected type of key blob.");
}
SafeKeyHandle keyHandle;
keyHandle = BCryptImportKeyPair(
algorithm,
AsymmetricKeyBlobTypes.BCRYPT_ECCPUBLIC_BLOB,
publicKey,
BCryptImportKeyPairFlags.None);
algorithm.Dispose();
return(new ECDiffieHellmanPublicKey(keyHandle));
}
/// <inheritdoc />
public IECDiffieHellmanPublicKey FromByteArray(byte[] publicKey)
{
SafeAlgorithmHandle algorithm;
var keyBlob = new EccKeyBlob(publicKey);
switch (keyBlob.Magic)
{
case EccKeyBlobMagicNumbers.BCRYPT_ECDH_PUBLIC_P256_MAGIC:
algorithm = ECDiffieHellmanFactory.BCryptOpenAlgorithmProvider(256);
break;
case EccKeyBlobMagicNumbers.BCRYPT_ECDH_PUBLIC_P384_MAGIC:
algorithm = ECDiffieHellmanFactory.BCryptOpenAlgorithmProvider(384);
break;
case EccKeyBlobMagicNumbers.BCRYPT_ECDH_PUBLIC_P521_MAGIC:
algorithm = ECDiffieHellmanFactory.BCryptOpenAlgorithmProvider(521);
break;
default:
throw new ArgumentException("Unexpected type of key blob.");
}
SafeKeyHandle keyHandle;
keyHandle = BCryptImportKeyPair(
algorithm,
AsymmetricKeyBlobTypes.BCRYPT_ECCPUBLIC_BLOB,
publicKey,
BCryptImportKeyPairFlags.None);
algorithm.Dispose();
return new ECDiffieHellmanPublicKey(keyHandle);
}