private static void SignToken(Token token)
{
using (var dsa = DSAHelper.GetPrivateDsa())
{
var rgbHash = token.ComposeData();
var sigBytes = dsa.CreateSignature(rgbHash);
var sigStr = ConvertToString(sigBytes);
token.Signature = sigStr;
}
}
public void Validate()
{
using (var dsa = DSAHelper.GetPublicDsa())
{
var sigBytes = ConvertToBytes(this.Signature);
var data = this.ComposeData();
if (IsExpired())
{
throw new TokenExpiredException();
}
if (!dsa.VerifySignature(data, sigBytes) && DateTimeOffset.Now < this.Expiration)
{
throw new InvalidTokenException();
}
}
}