public static string CalcAuthorizationBearer(string userKey, string privateKey)
{
const string algorithm = "RS256";
const string jwtName = "JWT";
const string hAlg = "SHA256";
var header = new GSObject(new
{
alg = algorithm,
typ = jwtName,
kid = userKey
});
var epochTime = new DateTime(1970, 1, 1);
var issued = (long)DateTime.UtcNow.Subtract(epochTime).TotalSeconds;
var payload = new GSObject(new
{
iat = issued,
jti = Guid.NewGuid().ToString()
});
var headerBytes = Encoding.UTF8.GetBytes(header.ToJsonString());
var payloadBytes = Encoding.UTF8.GetBytes(payload.ToJsonString());
var baseString = string.Join(".",
new[] { Convert.ToBase64String(headerBytes), Convert.ToBase64String(payloadBytes) });
using (var rsa = RsaUtils.DecodeRsaPrivateKey(privateKey))
{
var signature = rsa.SignData(Encoding.UTF8.GetBytes(baseString), hAlg);
var signatureString = Convert.ToBase64String(signature);
return("Bearer " + string.Join(".", new[] { baseString, signatureString }));
}
}
