public void CanValidateSignature()
{
Ed25519KeyPairGenerator kpg = new Ed25519KeyPairGenerator();
kpg.Init(new Ed25519KeyGenerationParameters(Random));
AsymmetricCipherKeyPair kp = kpg.GenerateKeyPair();
Ed25519PrivateKeyParameters privateKey = (Ed25519PrivateKeyParameters)kp.Private;
Ed25519PublicKeyParameters publicKey = (Ed25519PublicKeyParameters)kp.Public;
var pubKeyBase64 = Convert.ToBase64String(publicKey.GetEncoded());
// create signature for item
byte[] msg = new byte[Random.NextInt() & 255];
Random.NextBytes(msg);
var signer = new Ed25519Signer();
signer.Init(true, privateKey);
signer.BlockUpdate(msg, 0, msg.Length);
byte[] signature = signer.GenerateSignature();
var signatureForAppCast = Convert.ToBase64String(signature);
// verify signature
var checker = new Ed25519Checker(NetSparkleUpdater.Enums.SecurityMode.Strict, pubKeyBase64);
Assert.True(checker.VerifySignature(signatureForAppCast, msg) == NetSparkleUpdater.Enums.ValidationResult.Valid);
}
/// <summary>
/// Signs the passed in data with a private key
/// </summary>
/// <param name="privateKey">the private key used to create the signature</param>
/// <param name="data">The data to sign</param>
/// <returns>the signature as a byte array</returns>
public byte[] Sign(byte[] privateKey, byte[] data)
{
Ed25519PrivateKeyParameters privKey = null;
try
{
privKey = (Ed25519PrivateKeyParameters)CreateAsymmetricKeyParameterFromPrivateKeyInfo(privateKey);
}
catch (InvalidCastException exception)
{
string message = "Private Key Import Failed!\n" +
$"{exception.Message}.\n" +
"The contents of the source do not represent a valid Ed25519 key parameter\n" +
"Verify that the key is not corrupted.\n" +
"- or - Verify that the correct key is selected.";
throw new CryptoException(message, exception);
}
var signer = new Ed25519Signer();
signer.Init(true, privKey);
signer.BlockUpdate(data, 0, data.Length);
var signature = signer.GenerateSignature();
return(signature);
}
public byte[] sign(byte[] msg)
{
var signer = new Ed25519Signer();
signer.Init(true, privateKey);
signer.BlockUpdate(msg, 0, msg.Length);
return(signer.GenerateSignature());
}
public bool verify(byte[] msg, byte[] signature)
{
var verifier = new Ed25519Signer();
verifier.Init(false, publicKey);
verifier.BlockUpdate(msg, 0, msg.Length);
return(verifier.VerifySignature(signature));
}
public static bool Verify(byte[] data, byte[] signature, string publicKey)
{
Ed25519Signer verifier = new Ed25519Signer();
verifier.Init(false, publicKey.ToPublicKeyCipherParamsFromHex());
verifier.BlockUpdate(data, 0, data.Length);
return(verifier.VerifySignature(signature));
}
public static byte[] Sign(byte[] data, string privateKey)
{
Ed25519Signer signer = new Ed25519Signer();
signer.Init(true, privateKey.ToPrivateKeyCipherParamsFromHex());
signer.BlockUpdate(data, 0, data.Length);
return(signer.GenerateSignature());
}
byte[] ICryptoLibrary.SignEd25519(byte[] plainText, byte[] privateKey)
{
var signer = new Ed25519Signer();
signer.Init(true, new Ed25519PrivateKeyParameters(privateKey, 0));
signer.BlockUpdate(plainText, 0, plainText.Length);
return(signer.GenerateSignature());
}
bool ICryptoLibrary.VerifyEd25519(byte[] plainText, byte[] signature, byte[] publicKey)
{
var signer = new Ed25519Signer();
signer.Init(false, new Ed25519PublicKeyParameters(publicKey, 0));
signer.BlockUpdate(plainText, 0, plainText.Length);
return(signer.VerifySignature(signature));
}
public override byte[] Sign(byte[] input)
{
var signer = new Ed25519Signer();
signer.Init(true, edDsaKey.KeyParameters);
signer.BlockUpdate(input, 0, input.Length);
return(signer.GenerateSignature());
}
public override bool Verify(byte[] input, byte[] signature)
{
var validator = new Ed25519Signer();
validator.Init(false, edDsaKey.KeyParameters);
validator.BlockUpdate(input, 0, input.Length);
return(validator.VerifySignature(signature));
}
// Sings data with signer’s private key using Bouncy Castle
public static string Sign(string data, string privateKey)
{
var signer = new Ed25519Signer();
signer.Init(true, new Ed25519PrivateKeyParameters(Hex.Decode(privateKey), 0));
signer.BlockUpdate(Encoding.UTF8.GetBytes(data), 0, Encoding.UTF8.GetBytes(data).Length);
return(Hex.ToHexString(signer.GenerateSignature()));
}
// Verifies signature with signer’s public key using Bouncy Castle
public static bool Verify(string data, string signature, string publicKey)
{
var verifier = new Ed25519Signer();
verifier.Init(false, new Ed25519PublicKeyParameters(Hex.Decode(publicKey), 0));
verifier.BlockUpdate(Encoding.UTF8.GetBytes(data), 0, Encoding.UTF8.GetBytes(data).Length);
return(verifier.VerifySignature(Hex.Decode(signature)));
}
/// <summary>
/// Sign the given bytes, and wrap in Signature.
/// </summary>
/// <param name="bytes">bytes the data to sign</param>
/// <returns>a signature</returns>
private Signature RawSignBytes(byte[] bytes)
{
var signer = new Ed25519Signer();
signer.Init(true, privateKeyPair.Private);
signer.BlockUpdate(bytes, 0, bytes.Length);
byte[] signature = signer.GenerateSignature();
return(new Signature(signature));
}
/// <summary>
/// Perform signature verification against the sender address
/// </summary>
/// <param name="address">Address to verify</param>
/// <returns>bool</returns>
public bool Verify(Address address)
{
if (this.logic == null)
{
return(false);
}
else if (this.sig != null && this.msig != null)
{
return(false);
}
else
{
try
{
Logic.CheckProgram(this.logic, this.args);
}
catch (Exception)
{
return(false);
}
if (this.sig == null && this.msig == null)
{
try
{
return(address.Equals(this.ToAddress()));
}
catch (Exception)
{
return(false);
}
}
if (this.sig != null)
{
try
{
var pk = new Ed25519PublicKeyParameters(address.Bytes, 0);
var signer = new Ed25519Signer();
signer.Init(false, pk); //false代表用于VerifySignature
signer.BlockUpdate(this.BytesToSign(), 0, this.BytesToSign().Length);
return(signer.VerifySignature(this.sig.Bytes));
}
catch (Exception err)
{
Console.WriteLine("Message = " + err.Message);
return(false);
}
}
else
{
return(this.msig.Verify(this.BytesToSign()));
}
}
}
public bool Verify(byte[] msg, byte[] sig, byte[] pubKey)
{
var keyedHash = Blake2b.GetDigest(msg);
var publicKey = new Ed25519PublicKeyParameters(pubKey, 0);
var verifier = new Ed25519Signer();
verifier.Init(false, publicKey);
verifier.BlockUpdate(keyedHash, 0, keyedHash.Length);
return(verifier.VerifySignature(sig));
}
public Signature Sign(byte[] msg, byte[] prvKey)
{
var digest = Blake2b.GetDigest(msg);
var privateKey = new Ed25519PrivateKeyParameters(prvKey, 0);
var signer = new Ed25519Signer();
signer.Init(true, privateKey);
signer.BlockUpdate(digest, 0, digest.Length);
return(new Signature(signer.GenerateSignature(), _SignaturePrefix));
}
public bool VerifyStamp(TimestampDao timestamp)
{
var fileHash = timestamp.FileHash.ToUpper().FromBase32();
var signature = timestamp.Signature.ToUpper().FromBase32();
var publicKey = new Ed25519PublicKeyParameters(timestamp.PublicKey.ToUpper().FromBase32(), 0);
var verifier = new Ed25519Signer();
verifier.Init(false, publicKey);
verifier.BlockUpdate(fileHash, 0, fileHash.Length);
return(verifier.VerifySignature(signature));
}
/// <summary>
/// Implement the signing algorithm. In the case of an Ed25519
/// it will use the private key to sign the transaction and
/// return immediately. In the case of the callback method, it
/// will pass the invoice to the async method and async await
/// for the method to return.
/// </summary>
/// <param name="invoice">
/// The information for the transaction, including the Transaction
/// ID, Memo and serialized bytes of the crypto transfers and other
/// embedded information making up the transaction.
/// </param>
/// <returns></returns>
async Task ISignatory.SignAsync(IInvoice invoice)
{
switch (_type)
{
case Type.Ed25519:
var privateKey = (Ed25519PrivateKeyParameters)_data;
var ed25519Signer = new Ed25519Signer();
ed25519Signer.Init(true, privateKey);
ed25519Signer.BlockUpdate(invoice.TxBytes.ToArray(), 0, invoice.TxBytes.Length);
invoice.AddSignature(
KeyType.Ed25519,
privateKey.GeneratePublicKey().GetEncoded()[..6],
/// <summary>
/// Performs signature verification
/// </summary>
/// <param name="message">raw message to verify</param>
/// <returns>bool</returns>
public bool Verify(byte[] message)
{
if (this.version == 1 && this.threshold > 0 && this.subsigs.Count != 0)
{
if (this.threshold > this.subsigs.Count)
{
return(false);
}
else
{
int verifiedCount = 0;
Signature emptySig = new Signature();
for (int i = 0; i < this.subsigs.Count; ++i)
{
MultisigSubsig subsig = subsigs[i];
if (!subsig.sig.Equals(emptySig))
{
try
{
var pk = subsig.key;
var signer = new Ed25519Signer();
signer.Init(false, pk); //for verify
signer.BlockUpdate(message, 0, message.Length);
bool verified = signer.VerifySignature(subsig.sig.Bytes);
if (verified)
{
++verifiedCount;
}
}
catch (Exception var9)
{
throw new ArgumentException("verification of subsig " + i + "failed", var9);
}
}
}
if (verifiedCount < this.threshold)
{
return(false);
}
else
{
return(true);
}
}
}
else
{
return(false);
}
}
public override string Sign(string payload, string footer, SigningCredentials signingCredentials)
{
if (payload == null)
{
throw new ArgumentNullException(nameof(payload));
}
if (signingCredentials == null)
{
throw new ArgumentNullException(nameof(signingCredentials));
}
if (signingCredentials.Key.GetType() != typeof(EdDsaSecurityKey))
{
throw new SecurityTokenInvalidSigningKeyException($"PASETO v2 requires a key of type {typeof(EdDsaSecurityKey)}");
}
if (signingCredentials.Algorithm != ExtendedSecurityAlgorithms.EdDsa)
{
throw new SecurityTokenInvalidSigningKeyException($"PASETO v2 requires a key for configured for the '{ExtendedSecurityAlgorithms.EdDsa}' algorithm");
}
var privateKey = (EdDsaSecurityKey)signingCredentials.Key;
if (privateKey.PrivateKeyStatus != PrivateKeyStatus.Exists)
{
throw new SecurityTokenInvalidSigningKeyException($"Missing private key");
}
var payloadBytes = Encoding.UTF8.GetBytes(payload);
var messageToSign = PreAuthEncode(new[]
{
Encoding.UTF8.GetBytes(PublicHeader),
payloadBytes,
Encoding.UTF8.GetBytes(footer ?? string.Empty)
});
var signer = new Ed25519Signer();
signer.Init(true, privateKey.KeyParameters);
signer.BlockUpdate(messageToSign, 0, messageToSign.Length);
var signature = signer.GenerateSignature();
var token = $"{PublicHeader}{Base64UrlEncoder.Encode(payloadBytes.Combine(signature))}";
if (!string.IsNullOrWhiteSpace(footer))
{
token += $".{Base64UrlEncoder.Encode(footer)}";
}
return(token);
}
internal static void Sign(IInvoice invoice, Ed25519PrivateKeyParameters privateKey)
{
var ed25519Signer = new Ed25519Signer();
ed25519Signer.Init(true, privateKey);
ed25519Signer.BlockUpdate(invoice.TxBytes.ToArray(), 0, invoice.TxBytes.Length);
var signature = ed25519Signer.GenerateSignature();
ed25519Signer.Reset();
var publicKey = privateKey.GeneratePublicKey().GetEncoded();
var prefix = new ReadOnlyMemory <byte>(publicKey, 0, Math.Min(Math.Max(6, invoice.MinimumDesiredPrefixSize), publicKey.Length));
invoice.AddSignature(KeyType.Ed25519, prefix, signature);
}
/// <summary>
/// verifyBytes verifies that the signature for the message is valid for the public key.
/// The message should have been prepended with "MX" when signing.
/// </summary>
/// <param name="message">the message that was signed</param>
/// <param name="signature">signature</param>
/// <returns>true if the signature is valid</returns>
public bool VerifyBytes(byte[] message, Signature signature)
{
var pk = new Ed25519PublicKeyParameters(this.Bytes, 0);
// prepend the message prefix
List <byte> prefixBytes = new List <byte>(BYTES_SIGN_PREFIX);
prefixBytes.AddRange(message);
// verify signature
// Generate new signature
var signer = new Ed25519Signer();
signer.Init(false, pk);
signer.BlockUpdate(prefixBytes.ToArray(), 0, prefixBytes.ToArray().Length);
return(signer.VerifySignature(signature.Bytes));
}
byte[] ICryptoLibrary.SignEd25519(byte[] plainText, byte[] privateKey)
{
if (privateKey == null)
{
throw new ArgumentException(nameof(privateKey));
}
if (plainText == null)
{
throw new ArgumentException(nameof(plainText));
}
var signer = new Ed25519Signer();
signer.Init(true, new Ed25519PrivateKeyParameters(privateKey, 0));
signer.BlockUpdate(plainText, 0, plainText.Length);
return(signer.GenerateSignature());
}
private void BasicSigTest()
{
Ed25519PrivateKeyParameters privateKey = new Ed25519PrivateKeyParameters(
Hex.DecodeStrict("9d61b19deffd5a60ba844af492ec2cc44449c5697b326919703bac031cae7f60"), 0);
Ed25519PublicKeyParameters publicKey = new Ed25519PublicKeyParameters(
Hex.DecodeStrict("d75a980182b10ab7d54bfed3c964073a0ee172f3daa62325af021a68f707511a"), 0);
byte[] sig = Hex.Decode("e5564300c360ac729086e2cc806e828a84877f1eb8e5d974d873e065224901555fb8821590a33bacc61e39701cf9b46bd25bf5f0595bbe24655141438e7a100b");
ISigner signer = new Ed25519Signer();
signer.Init(true, privateKey);
IsTrue(AreEqual(sig, signer.GenerateSignature()));
signer.Init(false, publicKey);
IsTrue(signer.VerifySignature(sig));
}
/// <inheritdoc/>
public override byte[] Sign(byte[] input)
{
if (input == null || input.Length == 0)
{
throw new ArgumentNullException(nameof(input));
}
if (EdDsaKey.Curve.Equals("Ed25519"))
{
var privateKey = (Ed25519PrivateKeyParameters)EdDsaKey.KeyParameter;
var signer = new Ed25519Signer();
signer.Init(forSigning: true, privateKey);
signer.BlockUpdate(input, off: 0, len: input.Length);
return(signer.GenerateSignature());
}
throw new ArgumentException($"Unsupported EdDSA curve: \"{EdDsaKey.Curve}\".");
}
private static void EdDsaWithBouncyCastle()
{
// message to sign & verify
var message = Encoding.UTF8.GetBytes("Bob Loblaw");
// private/public key generation
var keyPairGenerator = new Ed25519KeyPairGenerator();
keyPairGenerator.Init(new Ed25519KeyGenerationParameters(new SecureRandom()));
var keyPair = keyPairGenerator.GenerateKeyPair();
var privateKey = (Ed25519PrivateKeyParameters)keyPair.Private;
var publicKey = (Ed25519PublicKeyParameters)keyPair.Public;
// keys are 32-bytes each
var privateKeyBytes = privateKey.GetEncoded();
var publicKeyBytes = publicKey.GetEncoded();
Console.WriteLine("Private key = " + Convert.ToBase64String(privateKeyBytes));
Console.WriteLine("Public key = " + Convert.ToBase64String(publicKeyBytes));
// signature generation
var signer = new Ed25519Signer();
signer.Init(true, privateKey);
signer.BlockUpdate(message, 0, message.Length);
byte[] signature = signer.GenerateSignature();
Console.WriteLine("Signature = " + Convert.ToBase64String(signature));
// signature validation
var validator = new Ed25519Signer();
validator.Init(false, publicKey);
validator.BlockUpdate(message, 0, message.Length);
bool isValidSignature = validator.VerifySignature(signature);
Console.WriteLine("Signature is valid: " + isValidSignature);
}
/// <summary>
/// Verifies the signature.
/// </summary>
/// <param name="file">The file.</param>
/// <param name="signature">The signature.</param>
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
public bool VerifySignature(FileInfo file, string signature)
{
if (!KeysExist())
{
Console.WriteLine("Keys do not exist");
return(false);
}
if (signature == null)
{
Console.WriteLine("Signature at path {0} is null", file.FullName);
return(false);
}
var data = File.ReadAllBytes(file.FullName);
var validator = new Ed25519Signer();
validator.Init(false, new Ed25519PublicKeyParameters(GetPublicKey(), 0));
validator.BlockUpdate(data, 0, data.Length);
return(validator.VerifySignature(Convert.FromBase64String(signature)));
}
/// <summary>
/// Gets the signature for file.
/// </summary>
/// <param name="file">The file.</param>
/// <returns>System.String.</returns>
public string GetSignatureForFile(FileInfo file)
{
if (!KeysExist())
{
Console.WriteLine("Keys do not exist");
return(null);
}
if (!file.Exists)
{
Console.Error.WriteLine("Target binary " + file.FullName + " does not exists");
return(null);
}
var data = File.ReadAllBytes(file.FullName);
var signer = new Ed25519Signer();
signer.Init(true, new Ed25519PrivateKeyParameters(GetPrivateKey(), 0));
signer.BlockUpdate(data, 0, data.Length);
return(Convert.ToBase64String(signer.GenerateSignature()));
}
/// <inheritdoc/>
public override bool Verify(byte[] input, byte[] signature)
{
if (input == null || input.Length == 0)
{
throw new ArgumentNullException(nameof(input));
}
if (signature == null || signature.Length == 0)
{
throw new ArgumentNullException(nameof(signature));
}
if (EdDsaKey.Curve.Equals("Ed25519"))
{
var publicKey = (Ed25519PublicKeyParameters)EdDsaKey.KeyParameter;
var validator = new Ed25519Signer();
validator.Init(forSigning: false, publicKey);
validator.BlockUpdate(input, off: 0, len: input.Length);
return(validator.VerifySignature(signature));
}
throw new ArgumentException($"Unsupported EdDSA curve: \"{EdDsaKey.Curve}\".");
}
/// <summary>
/// Create a Ed25519Checker object from the given parameters
/// </summary>
/// <param name="mode">The security mode of the validator. Controls what needs to be set in order to validate
/// an app cast and its items.</param>
/// <param name="publicKey">the base 64 public key as a string</param>
/// <param name="publicKeyFile">the public key file</param>
public Ed25519Checker(SecurityMode mode, string publicKey = null, string publicKeyFile = "NetSparkle_Ed25519.pub")
{
SecurityMode = mode;
if (string.IsNullOrEmpty(publicKey))
{
Stream data = TryGetResourceStream(publicKeyFile);
if (data == null)
{
data = TryGetFileResource(publicKeyFile, data);
}
if (data != null)
{
using (StreamReader reader = new StreamReader(data))
{
publicKey = reader.ReadToEnd();
}
}
}
if (!string.IsNullOrEmpty(publicKey))
{
try
{
_signer = new Ed25519Signer();
byte[] pubKeyBytes = Convert.FromBase64String(publicKey);
var cipherParams = new Ed25519PublicKeyParameters(pubKeyBytes, 0);
_signer.Init(false, cipherParams);
}
catch
{
_signer = null;
}
}
}
