1 files changed, 36 insertions, 0 deletions
diff --git a/src/DotNetOpenAuth.OAuth2/OAuth2/Crypto/JwsHeader.cs b/src/DotNetOpenAuth.OAuth2/OAuth2/Crypto/JwsHeader.cs
new file mode 100644
index 0000000..7274de5
--- /dev/null
+++ b/src/DotNetOpenAuth.OAuth2/OAuth2/Crypto/JwsHeader.cs
@@ -0,0 +1,36 @@
+namespace DotNetOpenAuth.OAuth2.Crypto {
+	using System;
+	using System.Collections.Generic;
+	using System.Linq;
+	using System.Text;
+	using DotNetOpenAuth.Messaging;
+
+	internal class JwsHeader : JwtHeader {
+		private JwsHeader() {
+		}
+
+		internal JwsHeader(string algorithm) {
+			Requires.NotNullOrEmpty(algorithm, "algorithm");
+			this.Algorithm = algorithm;
+		}
+
+		/// <summary>
+		/// Gets or sets a value that identifies the cryptographic algorithm used to secure the JWS.
+		/// A list of defined alg values is presented in Section 3, Table 1 of the JSON Web Algorithms (JWA) [JWA]
+		/// specification. The processing of the alg header parameter requires that the value MUST be one that is
+		/// both supported and for which there exists a key for use with that algorithm associated with the party
+		/// that digitally signed or HMACed the content. The alg parameter value is case sensitive.
+		/// This header parameter is REQUIRED.
+		/// </summary>
+		[MessagePart("alg", IsRequired = true, AllowEmpty = false)]
+		internal string Algorithm { get; set; }
+
+		/// <summary>
+		/// Gets or sets a hint indicating which specific key owned by the signer should be used to validate the digital signature.
+		/// This allows signers to explicitly signal a change of key to recipients. The interpretation of the contents of the kid
+		/// parameter is unspecified. This header parameter is OPTIONAL.
+		/// </summary>
+		[MessagePart("kid")]
+		internal string KeyIdentity { get; set; }
+	}
+}