... или JWT (JSon Web Token). ACS поддерживает это тоже.
Проверьте эту статью: JSON Web Token Handler для Microsoft .NET Framework 4.5
Вот пример использования этой библиотеки с .Net 4.5, которая выдает и проверяет JWT, подписанный с помощью HMAC SHA256 на основе симметричного ключа.
string jwtIssuer = "MyIssuer";
string jwtAudience = "MyAudience";
// Generate symmetric key for HMAC-SHA256 signature
RNGCryptoServiceProvider cryptoProvider = new RNGCryptoServiceProvider();
byte[] keyForHmacSha256 = new byte[64];
cryptoProvider.GetNonZeroBytes(keyForHmacSha256);
///////////////////////////////////////////////////////////////////
// Create signing credentials for the signed JWT.
// This object is used to cryptographically sign the JWT by the issuer.
SigningCredentials sc = new SigningCredentials(
new InMemorySymmetricSecurityKey(keyForHmacSha256),
"http://www.w3.org/2001/04/xmldsig-more#hmac-sha256",
"http://www.w3.org/2001/04/xmlenc#sha256");
///////////////////////////////////////////////////////////////////
// Create token validation parameters for the signed JWT
// This object will be used to verify the cryptographic signature of the received JWT
TokenValidationParameters validationParams =
new TokenValidationParameters()
{
AllowedAudience = s_jwtAudience,
ValidIssuer = s_jwtIssuer,
ValidateExpiration = true,
ValidateNotBefore = true,
ValidateIssuer = true,
ValidateSignature = true,
SigningToken = new BinarySecretSecurityToken(keyForHmacSha256),
};
///////////////////////////////////////////////////////////////////
// Create JWT handler
// This object is used to write/sign/decode/validate JWTs
JWTSecurityTokenHandler jwtHandler = new JWTSecurityTokenHandler();
// Create a simple JWT claim set
IList<Claim> payloadClaims = new List<Claim>() { new Claim("clm1", "clm1 value"), };
// Create a JWT with signing credentials and lifetime of 12 hours
JWTSecurityToken jwt =
new JWTSecurityToken(jwtIssuer, jwtAudience, payloadClaims, sc, DateTime.UtcNow, DateTime.UtcNow.AddHours(12.0));
// Serialize the JWT
// This is how our JWT looks on the wire: <Base64UrlEncoded header>.<Base64UrlEncoded body>.<signature>
string jwtOnTheWire = jwtHandler.WriteToken(jwt);
// Validate the token signature (we provide the shared symmetric key in `validationParams`)
// This will throw if the signature does not validate
jwtHandler.ValidateToken(jwtOnTheWire, validationParams);
// Parse JWT from the Base64UrlEncoded wire form (<Base64UrlEncoded header>.<Base64UrlEncoded body>.<signature>)
JWTSecurityToken parsedJwt = jwtHandler.ReadToken(jwtOnTheWire) as JWTSecurityToken;