/// <summary>汎用認証サイトの発行したJWT形式のTokenを検証する。</summary>
/// <param name="jwtToken">JWT形式のToken</param>
/// <param name="jwtPayload">
/// JWS, JWS + JEWの場合があるのでペイロードを返す。
/// </param>
/// <returns>検証結果</returns>
public static bool Verify(string jwtToken, out string jwtPayload)
{
jwtPayload = "";
JWE jwe = null;
JWS jws = null;
// 復号化（JWEの場合）
bool isJWE_FAPI2 = false;
if (3 < jwtToken.Split('.').Length)
{
isJWE_FAPI2 = true;
// ヘッダ
JWE_Header jweHeader = JsonConvert.DeserializeObject <JWE_Header>(
CustomEncode.ByteToString(CustomEncode.FromBase64UrlString(jwtToken.Split('.')[0]), CustomEncode.UTF_8));
if (jweHeader.alg == JwtConst.RSA_OAEP)
{
jwe = new JWE_RsaOaepAesGcm_X509(
CmnClientParams.RsaPfxFilePath,
CmnClientParams.RsaPfxPassword);
}
else if (jweHeader.alg == JwtConst.RSA1_5)
{
jwe = new JWE_Rsa15A128CbcHS256_X509(
CmnClientParams.RsaPfxFilePath,
CmnClientParams.RsaPfxPassword);
}
else
{
throw new NotSupportedException(string.Format(
"This jwe alg of {0} is not supported.", jweHeader.alg));
}
jwe.Decrypt(jwtToken, out jwtToken);
}
else
{
isJWE_FAPI2 = false;
}
// 検証
// ヘッダ
JWS_Header jwsHeader = JsonConvert.DeserializeObject <JWS_Header>(
CustomEncode.ByteToString(CustomEncode.FromBase64UrlString(jwtToken.Split('.')[0]), CustomEncode.UTF_8));
if (jwsHeader.alg == JwtConst.ES256 && isJWE_FAPI2)
{
} // 正常
else if (jwsHeader.alg == JwtConst.RS256 && !isJWE_FAPI2)
{
} // 正常
else
{
throw new NotSupportedException("Unexpected combination of JWS and JWE.");
}
// 証明書を使用するか、Jwkを使用するか判定
if (string.IsNullOrEmpty(jwsHeader.jku) ||
string.IsNullOrEmpty(jwsHeader.kid))
{
// 旧バージョン（証明書を使用
if (isJWE_FAPI2)
{
#if NET45 || NET46
throw new NotSupportedException("FAPI2 is not supported in this dotnet version.");
#else
jws = new JWS_ES256_X509(CmnClientParams.EcdsaCerFilePath, "");
#endif
}
else
{
jws = new JWS_RS256_X509(CmnClientParams.RsaCerFilePath, "");
}
}
else
{
// 新バージョン（Jwkを使用
if (string.IsNullOrEmpty(OAuth2AndOIDCParams.JwkSetFilePath))
{
// jku(jwks_uri)使用のカバレッジ
// Client側
JObject jwkObject = JwkSetStore.GetInstance().GetJwkObject(jwsHeader.kid);
// チェック
if (jwkObject == null)
{
// 書込
jwkObject = JwkSetStore.GetInstance().SetJwkSetObject(jwsHeader.jku, jwsHeader.kid);
}
// チェック
if (jwkObject == null)
{
// 証明書を使用
if (isJWE_FAPI2)
{
#if NET45 || NET46
throw new NotSupportedException("FAPI2 is not supported in this dotnet version.");
#else
jws = new JWS_ES256_X509(CmnClientParams.EcdsaCerFilePath, "");
#endif
}
else
{
jws = new JWS_RS256_X509(CmnClientParams.RsaCerFilePath, "");
}
}
else
{
// Jwkを使用
if (isJWE_FAPI2)
{
#if NET45 || NET46
throw new NotSupportedException("FAPI2 is not supported in this dotnet version.");
#else
EccPublicKeyConverter epkc = new EccPublicKeyConverter();
jws = new JWS_ES256_Param(epkc.JwkToParam(jwkObject), false);
#endif
}
else
{
RsaPublicKeyConverter rpkc = new RsaPublicKeyConverter();
jws = new JWS_RS256_Param(rpkc.JwkToParam(jwkObject));
}
}
}
else
{
// JwkSet使用のカバレッジ
// AuthZ側でClient側テストを行うためのカバレージ
JObject jwkObject = null;
if (ResourceLoader.Exists(OAuth2AndOIDCParams.JwkSetFilePath, false))
{
JwkSet jwkSet = JwkSet.LoadJwkSet(OAuth2AndOIDCParams.JwkSetFilePath);
jwkObject = JwkSet.GetJwkObject(jwkSet, jwsHeader.kid);
}
if (jwkObject == null)
{
// 証明書を使用
if (isJWE_FAPI2)
{
#if NET45 || NET46
throw new NotSupportedException("FAPI2 is not supported in this dotnet version.");
#else
jws = new JWS_ES256_X509(CmnClientParams.EcdsaCerFilePath, "");
#endif
}
else
{
jws = new JWS_RS256_X509(CmnClientParams.RsaCerFilePath, "");
}
}
else
{
// Jwkを使用
if (isJWE_FAPI2)
{
#if NET45 || NET46
throw new NotSupportedException("FAPI2 is not supported in this dotnet version.");
#else
EccPublicKeyConverter epkc = new EccPublicKeyConverter();
jws = new JWS_ES256_Param(epkc.JwkToParam(jwkObject), false);
#endif
}
else
{
RsaPublicKeyConverter rpkc = new RsaPublicKeyConverter();
jws = new JWS_RS256_Param(rpkc.JwkToParam(jwkObject));
}
}
}
}
bool ret = jws.Verify(jwtToken);
if (ret)
{
jwtPayload = CustomEncode.ByteToString(
CustomEncode.FromBase64UrlString(jwtToken.Split('.')[1]), CustomEncode.us_ascii);
}
return(ret);
}
/// <summary>MyJwt</summary>
private static void MyJwt()
{
#region Variables
string temp = "";
bool ret = false;
#region Env
OperatingSystem os = Environment.OSVersion;
// https://github.com/dotnet/corefx/issues/29404#issuecomment-385287947
// *.pfxから証明書を開く場合、X509KeyStorageFlags.Exportableの指定が必要な場合がある。
// Linuxのキーは常にエクスポート可能だが、WindowsやMacOSでは必ずしもそうではない。
X509KeyStorageFlags x509KSF = 0;
if (os.Platform == PlatformID.Win32NT)
{
x509KSF = X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.Exportable;
}
else //if (os.Platform == PlatformID.Unix)
{
x509KSF = X509KeyStorageFlags.DefaultKeySet;
}
#endregion
#region Token
string token = "";
IDictionary <string, object> payload = null;
payload = new Dictionary <string, object>()
{
{ "sub", "*****@*****.**" },
{ "exp", 1300819380 }
};
string payloadString = JsonConvert.SerializeObject(payload);
#endregion
#region Keys
string jwk = "";
#endregion
#region JWS
// RS256
JWS_RS256_X509 jWS_RS256_X509 = null;
JWS_RS256_Param jWS_RS256_Param = null;
// ES256
#if NETCORE || NET47
JWS_ES256_X509 jWS_ES256_X509 = null;
JWS_ES256_Param jWS_ES256_Param = null;
#endif
#endregion
#region JWE
JWE jwe = null;
#endregion
#endregion
#region Jws
if (os.Platform == PlatformID.Win32NT)
{
#region RSA(RS256)
// 署名（X509）
jWS_RS256_X509 = new JWS_RS256_X509(Program.PrivateRsaX509Path, Program.PfxPassword, x509KSF);
token = jWS_RS256_X509.Create(payloadString);
MyDebug.InspectJwt("JWS_RS256_X509.Create", token);
// 鍵の相互変換
jwk = RsaPublicKeyConverter.ParamToJwk(((RSA)jWS_RS256_X509.DigitalSignX509.AsymmetricAlgorithm).ExportParameters(false));
MyDebug.OutputDebugAndConsole("RSA JWK", jwk);
// 検証（X509）
jWS_RS256_X509 = new JWS_RS256_X509(Program.PublicRsaX509Path, "", x509KSF);
MyDebug.OutputDebugAndConsole("JWS_RS256_X509.Verify", jWS_RS256_X509.Verify(token).ToString());
// 検証（Param）
jWS_RS256_Param = new JWS_RS256_Param(RsaPublicKeyConverter.JwkToParam(jwk));
MyDebug.OutputDebugAndConsole("JWS_RS256_Param.Verify", jWS_RS256_Param.Verify(token).ToString());
#endregion
// DSA
#if NETCORE || NET47
#region ECDsa(ES256)
// 署名（X509）
jWS_ES256_X509 = new JWS_ES256_X509(Program.PrivateECDsaX509Path, Program.PfxPassword);
token = jWS_ES256_X509.Create(payloadString);
MyDebug.InspectJwt("JWS_ES256_X509.Create", token);
// 鍵の相互変換
jwk = EccPublicKeyConverter.ParamToJwk(
((ECDsa)jWS_ES256_X509.DigitalSignECDsaX509.AsymmetricAlgorithm).ExportParameters(false));
MyDebug.OutputDebugAndConsole("ECDSA JWK", jwk);
// 検証（X509）
jWS_ES256_X509 = new JWS_ES256_X509(Program.PublicECDsaX509Path, "");
MyDebug.OutputDebugAndConsole("JWS_ES256_X509.Verify", jWS_ES256_X509.Verify(token).ToString());
#if NET47 || NETCOREAPP3_0
// 検証（Param）
//// Core2.0-2.2 on WinでVerifyがエラーになる。
//// DigitalSignECDsaOpenSslを試してみるが生成できない、
//// Core on Win に OpenSSLベースのプロバイダは無いため）
jWS_ES256_Param = new JWS_ES256_Param(EccPublicKeyConverter.JwkToParam(jwk), false);
MyDebug.OutputDebugAndConsole("JWS_ES256_Param.Verify", jWS_ES256_Param.Verify(token).ToString());
#elif NETCOREAPP2_0
// Core2.0-2.2 on Winで ECDsaCngは動作しない。
#endif
// ★ xLibTest
Program.VerifyResult("JwsAlgorithm.xLibTest", token, jWS_ES256_X509.DigitalSignECDsaX509.AsymmetricAlgorithm, JwsAlgorithm.ES256);
#endregion
#endif
}
else //if (os.Platform == PlatformID.Unix)
{
#if NETCORE
#region RSA(RS256)
// 署名（X509）
jWS_RS256_X509 = new JWS_RS256_X509(Program.PrivateRsaX509Path, Program.PfxPassword, x509KSF);
token = jWS_RS256_X509.Create(payloadString);
MyDebug.InspectJwt("JWS_RS256_X509.Create", token);
// 鍵の相互変換
jwk = RsaPublicKeyConverter.ParamToJwk(((RSA)jWS_RS256_X509.DigitalSignX509.AsymmetricAlgorithm).ExportParameters(false));
MyDebug.OutputDebugAndConsole("RSA JWK", jwk);
// 検証（X509）
jWS_RS256_X509 = new JWS_RS256_X509(Program.PublicRsaX509Path, "", x509KSF);
MyDebug.OutputDebugAndConsole("JWS_RS256_X509.Verify", jWS_RS256_X509.Verify(token).ToString());
// 検証（Param）
jWS_RS256_Param = new JWS_RS256_Param(RsaPublicKeyConverter.JwkToParam(jwk));
MyDebug.OutputDebugAndConsole("JWS_RS256_Param.Verify", jWS_RS256_Param.Verify(token).ToString());
#endregion
// DSA
#region ECDsa(ES256)
// 署名（X509）
jWS_ES256_X509 = new JWS_ES256_X509(Program.PrivateECDsaX509Path, Program.PfxPassword);
token = jWS_ES256_X509.Create(payloadString);
MyDebug.InspectJwt("JWS_ES256_X509.Create", token);
// 鍵の相互変換
jwk = EccPublicKeyConverter.ParamToJwk(
((ECDsa)jWS_ES256_X509.DigitalSignECDsaX509.AsymmetricAlgorithm).ExportParameters(false));
MyDebug.OutputDebugAndConsole("ECDSA JWK", jwk);
// 検証（X509）
jWS_ES256_X509 = new JWS_ES256_X509(Program.PublicECDsaX509Path, "");
MyDebug.OutputDebugAndConsole("JWS_ES256_X509.Verify", jWS_ES256_X509.Verify(token).ToString());
// 検証（Param）
jWS_ES256_Param = new JWS_ES256_Param(EccPublicKeyConverter.JwkToParam(jwk), false);
MyDebug.OutputDebugAndConsole("JWS_ES256_Param.Verify", jWS_ES256_X509.Verify(token).ToString());
// ★ xLibTest
Program.VerifyResult("JwsAlgorithm.xLibTest", token, jWS_ES256_X509.DigitalSignECDsaX509.AsymmetricAlgorithm, JwsAlgorithm.ES256);
#endregion
#endif
}
#endregion
#region Jwe
#region RsaOaepAesGcm
// 暗号化
jwe = new JWE_RsaOaepAesGcm_X509(Program.PublicRsaX509Path, "", x509KSF);
token = jwe.Create(payloadString);
// 復号化
jwe = new JWE_RsaOaepAesGcm_X509(Program.PrivateRsaX509Path, Program.PfxPassword, x509KSF);
ret = jwe.Decrypt(token, out temp);
MyDebug.OutputDebugAndConsole("JWE_RsaOaepAesGcm_X509.Decrypt", ret.ToString() + " : " + temp);
// ★ xLibTest
Program.VerifyResult("JweAlgorithm.xLibTest", token,
jwe.ASymmetricCryptography.AsymmetricAlgorithm, JweAlgorithm.RSA_OAEP, JweEncryption.A256GCM);
#endregion
#region Rsa15A128CbcHS256
// 暗号化
jwe = new JWE_Rsa15A128CbcHS256_X509(Program.PublicRsaX509Path, "", x509KSF);
token = jwe.Create(payloadString);
// 復号化
jwe = new JWE_Rsa15A128CbcHS256_X509(Program.PrivateRsaX509Path, Program.PfxPassword, x509KSF);
ret = jwe.Decrypt(token, out temp);
MyDebug.OutputDebugAndConsole("JWE_Rsa15A128CbcHS256_X509.Decrypt", ret.ToString() + " : " + temp);
// ★ xLibTest
Program.VerifyResult("JweAlgorithm.xLibTest", token,
jwe.ASymmetricCryptography.AsymmetricAlgorithm, JweAlgorithm.RSA1_5, JweEncryption.A128CBC_HS256);
#endregion
#endregion
}
