static void AssertScramSha256PlusTlsUnique(SaslMechanismScramSha256Plus sasl, string prefix)
{
const string expected = "c=cD10bHMtdW5pcXVlLCxpbWFwOi8vZWx3b29kLmlubm9zb2Z0LmNvbS8=,r=rOprNGfwEbeRWgbNEkqO%hvYDpWUa2RaTCAfuxFIlj)hNlF$k0,p=r034Wumf+g5Cw9QvuK2TBTWHLa9hsT0TpUvksIr3P0I=";
const string challenge1 = "r=rOprNGfwEbeRWgbNEkqO%hvYDpWUa2RaTCAfuxFIlj)hNlF$k0,s=W22ZaJ0SNY7soEsUEjb6gQ==,i=4096";
const string challenge2 = "v=ZfK3fb1tbWoyTuaEXvUTM2va2RSQgBVJ8QYsympnk8o=";
const string entropy = "rOprNGfwEbeRWgbNEkqO";
string token;
sasl.cnonce = entropy;
Assert.IsTrue(sasl.SupportsChannelBinding, "{0}: SupportsChannelBinding", prefix);
Assert.IsTrue(sasl.SupportsInitialResponse, "{0}: SupportsInitialResponse", prefix);
var challenge = Encoding.UTF8.GetString(Convert.FromBase64String(sasl.Challenge(null)));
Assert.AreEqual("p=tls-unique,,n=user,r=" + entropy, challenge, "{0}: initial SCRAM-SHA-256-PLUS challenge response does not match the expected string.", prefix);
Assert.IsFalse(sasl.IsAuthenticated, "{0}: should not be authenticated yet.", prefix);
token = Convert.ToBase64String(Encoding.UTF8.GetBytes(challenge1));
challenge = Encoding.UTF8.GetString(Convert.FromBase64String(sasl.Challenge(token)));
Assert.AreEqual(expected, challenge, "{0}: second SCRAM-SHA-256-PLUS challenge response does not match the expected string.", prefix);
Assert.IsFalse(sasl.IsAuthenticated, "{0}: should not be authenticated yet.", prefix);
token = Convert.ToBase64String(Encoding.UTF8.GetBytes(challenge2));
challenge = Encoding.UTF8.GetString(Convert.FromBase64String(sasl.Challenge(token)));
Assert.AreEqual(string.Empty, challenge, "{0}: third SCRAM-SHA-256-PLUS challenge should be an empty string.", prefix);
Assert.IsTrue(sasl.IsAuthenticated, "{0}: SCRAM-SHA-256-PLUS should be authenticated now.", prefix);
Assert.IsTrue(sasl.NegotiatedChannelBinding, "{0}: NegotiatedChannelBinding", prefix);
Assert.IsFalse(sasl.NegotiatedSecurityLayer, "{0}: NegotiatedSecurityLayer", prefix);
Assert.AreEqual(string.Empty, sasl.Challenge(string.Empty), "{0}: challenge while authenticated.", prefix);
}
static void AssertScramSha256PlusTlsServerEndpoint(SaslMechanismScramSha256Plus sasl, string prefix)
{
const string expected = "c=cD10bHMtc2VydmVyLWVuZC1wb2ludCwsaW1hcDovL2Vsd29vZC5pbm5vc29mdC5jb20v,r=rOprNGfwEbeRWgbNEkqO%hvYDpWUa2RaTCAfuxFIlj)hNlF$k0,p=5mTXE52q6omlPLhl1OBywbbmUZoqUb8TZ0rQcSODGrg=";
const string challenge1 = "r=rOprNGfwEbeRWgbNEkqO%hvYDpWUa2RaTCAfuxFIlj)hNlF$k0,s=W22ZaJ0SNY7soEsUEjb6gQ==,i=4096";
const string challenge2 = "v=iTfhTdj45V52spZKUcXtZGOkyhurIJ8/UAxKKJZcmRQ=";
const string entropy = "rOprNGfwEbeRWgbNEkqO";
string token;
sasl.cnonce = entropy;
Assert.IsTrue(sasl.SupportsChannelBinding, "{0}: SupportsChannelBinding", prefix);
Assert.IsTrue(sasl.SupportsInitialResponse, "{0}: SupportsInitialResponse", prefix);
var challenge = Encoding.UTF8.GetString(Convert.FromBase64String(sasl.Challenge(null)));
Assert.AreEqual("p=tls-server-end-point,,n=user,r=" + entropy, challenge, "{0}: initial SCRAM-SHA-256-PLUS challenge response does not match the expected string.", prefix);
Assert.IsFalse(sasl.IsAuthenticated, "{0}: should not be authenticated yet.", prefix);
token = Convert.ToBase64String(Encoding.UTF8.GetBytes(challenge1));
challenge = Encoding.UTF8.GetString(Convert.FromBase64String(sasl.Challenge(token)));
Assert.AreEqual(expected, challenge, "{0}: second SCRAM-SHA-256-PLUS challenge response does not match the expected string.", prefix);
Assert.IsFalse(sasl.IsAuthenticated, "{0}: should not be authenticated yet.", prefix);
token = Convert.ToBase64String(Encoding.UTF8.GetBytes(challenge2));
challenge = Encoding.UTF8.GetString(Convert.FromBase64String(sasl.Challenge(token)));
Assert.AreEqual(string.Empty, challenge, "{0}: third SCRAM-SHA-256-PLUS challenge should be an empty string.", prefix);
Assert.IsTrue(sasl.IsAuthenticated, "{0}: SCRAM-SHA-256-PLUS should be authenticated now.", prefix);
Assert.IsTrue(sasl.NegotiatedChannelBinding, "{0}: NegotiatedChannelBinding", prefix);
Assert.IsFalse(sasl.NegotiatedSecurityLayer, "{0}: NegotiatedSecurityLayer", prefix);
Assert.AreEqual(string.Empty, sasl.Challenge(string.Empty), "{0}: challenge while authenticated.", prefix);
}
public void TestArgumentExceptions()
{
var credentials = new NetworkCredential("username", "password");
var sasl = new SaslMechanismScramSha256(credentials);
Assert.DoesNotThrow(() => sasl.Challenge(null));
Assert.Throws <ArgumentNullException> (() => new SaslMechanismScramSha256(null));
Assert.Throws <ArgumentNullException> (() => new SaslMechanismScramSha256(null, "password"));
Assert.Throws <ArgumentNullException> (() => new SaslMechanismScramSha256("username", null));
sasl = new SaslMechanismScramSha256Plus(credentials);
Assert.DoesNotThrow(() => sasl.Challenge(null));
Assert.Throws <ArgumentNullException> (() => new SaslMechanismScramSha256Plus(null));
Assert.Throws <ArgumentNullException> (() => new SaslMechanismScramSha256Plus(null, "password"));
Assert.Throws <ArgumentNullException> (() => new SaslMechanismScramSha256Plus("username", null));
}
public void TestScramSha256PlusTlsUnique()
{
var credentials = new NetworkCredential("user", "pencil");
var uri = new Uri("imap://elwood.innosoft.com");
var context = new ChannelBindingContext(ChannelBindingKind.Unique, uri.ToString());
var sasl = new SaslMechanismScramSha256Plus(credentials)
{
ChannelBindingContext = context
};
AssertScramSha256PlusTlsUnique(sasl, "NetworkCredential");
sasl = new SaslMechanismScramSha256Plus("user", "pencil")
{
ChannelBindingContext = context
};
AssertScramSha256PlusTlsUnique(sasl, "user/pass");
}
