public static void KeyPairFromSeed(ArraySegment <byte> publicKey, ArraySegment <byte> expandedPrivateKey, ArraySegment <byte> privateKeySeed)
{
if (publicKey.Array == null)
{
throw new ArgumentNullException("publicKey.Array");
}
if (expandedPrivateKey.Array == null)
{
throw new ArgumentNullException("expandedPrivateKey.Array");
}
if (privateKeySeed.Array == null)
{
throw new ArgumentNullException("privateKeySeed.Array");
}
if (publicKey.Count != PublicKeySizeInBytes)
{
throw new ArgumentException("publicKey.Count");
}
if (expandedPrivateKey.Count != ExpandedPrivateKeySizeInBytes)
{
throw new ArgumentException("expandedPrivateKey.Count");
}
if (privateKeySeed.Count != PrivateKeySeedSizeInBytes)
{
throw new ArgumentException("privateKeySeed.Count");
}
Ed25519Operations.crypto_sign_keypair(
publicKey.Array, publicKey.Offset,
expandedPrivateKey.Array, expandedPrivateKey.Offset,
privateKeySeed.Array, privateKeySeed.Offset);
}
public static bool Verify(byte[] signature, byte[] message, byte[] publicKey)
{
Throw.If(signature == null, "signature");
Throw.If(message == null, "message");
Throw.If(publicKey == null, "publicKey");
Throw.If(signature.Length != SignatureSizeInBytes, $"Signature size must be {SignatureSizeInBytes}");
Throw.If(publicKey.Length != PublicKeySizeInBytes, $"Public key size must be {PublicKeySizeInBytes}");
return(Ed25519Operations.VerifySignature(signature, 0, message, 0, message.Length, publicKey, 0));
}
public static void Sign(ArraySegment <byte> signature, ArraySegment <byte> message, ArraySegment <byte> expandedPrivateKey)
{
Throw.If(signature.Array == null, "signature.Array");
Throw.If(signature.Count != SignatureSizeInBytes, "signature.Count");
Throw.If(expandedPrivateKey.Array == null, "expandedPrivateKey.Array");
Throw.If(expandedPrivateKey.Count != ExpandedPrivateKeySizeInBytes, "expandedPrivateKey.Count");
Throw.If(message.Array == null, "message.Array");
Ed25519Operations.GenerateSignature(signature.Array, signature.Offset, message.Array, message.Offset, message.Count, expandedPrivateKey.Array, expandedPrivateKey.Offset);
}
public static void KeyPairFromSeed(out byte[] publicKey, out byte[] expandedPrivateKey, byte[] privateKeySeed)
{
Throw.If(privateKeySeed == null, "privateKeySeed");
Throw.If(privateKeySeed.Length != PrivateKeySeedSizeInBytes, $"privateKeySeed length should be {PrivateKeySeedSizeInBytes}");
var pk = new byte[PublicKeySizeInBytes];
var sk = new byte[ExpandedPrivateKeySizeInBytes];
Ed25519Operations.crypto_sign_keypair(pk, 0, sk, 0, privateKeySeed, 0);
publicKey = pk;
expandedPrivateKey = sk;
}
public static bool Verify(ArraySegment <byte> signature, ArraySegment <byte> message, ArraySegment <byte> publicKey)
{
Throw.If(signature.Count != SignatureSizeInBytes, $"Signature size must be {SignatureSizeInBytes}");
Throw.If(publicKey.Count != PublicKeySizeInBytes, $"Public key size must be {PublicKeySizeInBytes}");
return(Ed25519Operations.VerifySignature(signature.Array, signature.Offset, message.Array, message.Offset, message.Count, publicKey.Array, publicKey.Offset));
}