public U2FRegistrationResponse(byte[] bytes)
{
int offset = 1;
var pubkey = new byte[65];
Array.Copy(bytes, offset, pubkey, 0, pubkey.Length);
offset += pubkey.Length;
var len = bytes[offset];
offset++;
var keyhandle = new byte[len];
Array.Copy(bytes, offset, keyhandle, 0, keyhandle.Length);
offset += keyhandle.Length;
var certsig = new byte[bytes.Length - offset];
Array.Copy(bytes, offset, certsig, 0, certsig.Length);
UserPubKey = pubkey;
KeyHandle = new KeyHandle(keyhandle);
AttestationCertificate = new X509Certificate2(certsig);
Signature = new byte[certsig.Length - AttestationCertificate.RawData.Length];
Array.Copy(certsig, AttestationCertificate.RawData.Length, Signature, 0, Signature.Length);
}
public async Task <U2FAuthenticationResponse> AuthenticateAsync(byte[] challenge, AppId applicationId, KeyHandle keyHandle, CancellationToken cancellationToken = default(CancellationToken))
{
if (challenge == null)
{
throw new ArgumentNullException("challenge");
}
if (challenge.Length != 32)
{
throw new ArgumentException("Challenge should be 32 bytes");
}
if (applicationId == null)
{
throw new ArgumentNullException("applicationId");
}
var data = new byte[64 + 1 + keyHandle.Length];
Array.Copy(challenge, 0, data, 0, 32);
Array.Copy(applicationId.GetBytes(true), 0, data, 32, 32);
data[64] = (byte)keyHandle.Length;
Array.Copy(keyHandle.GetBytes(true), 0, data, 65, keyHandle.Length);
var result = await this.ExchangeApdu(INS_SIGN, 0x03, 0x00, data, cancellationToken).ConfigureAwait(false);
return(new U2FAuthenticationResponse(result));
}
public U2FAuthenticationResponse Authenticate(byte[] challenge, AppId applicationId, KeyHandle keyHandle, CancellationToken cancellationToken = default(CancellationToken))
{
return(AuthenticateAsync(challenge, applicationId, keyHandle, cancellationToken).GetAwaiter().GetResult());
}
public U2FRegistrationResponse(byte[] bytes)
{
int offset = 1;
var pubkey = new byte[65];
Array.Copy(bytes, offset, pubkey, 0, pubkey.Length);
offset += pubkey.Length;
var len = bytes[offset];
offset++;
var keyhandle = new byte[len];
Array.Copy(bytes, offset, keyhandle, 0, keyhandle.Length);
offset += keyhandle.Length;
var certsig = new byte[bytes.Length - offset];
Array.Copy(bytes, offset, certsig, 0, certsig.Length);
UserPubKey = pubkey;
KeyHandle = new KeyHandle(keyhandle);
AttestationCertificate = new X509Certificate2(certsig);
Signature = new byte[certsig.Length - AttestationCertificate.RawData.Length];
Array.Copy(certsig, AttestationCertificate.RawData.Length, Signature, 0, Signature.Length);
}
public U2FAuthenticationResponse Authenticate(byte[] challenge, AppId applicationId, KeyHandle keyHandle, CancellationToken cancellationToken = default(CancellationToken))
{
if(challenge == null)
throw new ArgumentNullException("challenge");
if(challenge.Length != 32)
throw new ArgumentException("Challenge should be 32 bytes");
if(applicationId == null)
throw new ArgumentNullException("applicationId");
var data = new byte[64 + 1 + keyHandle.Length];
Array.Copy(challenge, 0, data, 0, 32);
Array.Copy(applicationId.GetBytes(true), 0, data, 32, 32);
data[64] = (byte)keyHandle.Length;
Array.Copy(keyHandle.GetBytes(true), 0, data, 65, keyHandle.Length);
var result = this.ExchangeApdu(INS_SIGN, 0x03, 0x00, data, cancellationToken);
return new U2FAuthenticationResponse(result);
}
