1 files changed, 74 insertions, 0 deletions
diff --git a/src/DotNetOpenAuth.OAuth2/OAuth2/Crypto/JweHeader.cs b/src/DotNetOpenAuth.OAuth2/OAuth2/Crypto/JweHeader.cs
new file mode 100644
index 0000000..2691da3
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+++ b/src/DotNetOpenAuth.OAuth2/OAuth2/Crypto/JweHeader.cs
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+namespace DotNetOpenAuth.OAuth2.Crypto {
+	using System;
+	using System.Collections.Generic;
+	using System.Linq;
+	using System.Text;
+	using DotNetOpenAuth.Messaging;
+
+	internal class JweHeader : JwtHeader {
+		private JweHeader() {
+		}
+
+		internal JweHeader(string algorithm, string encryptionMethod) {
+			Requires.NotNullOrEmpty(algorithm, "algorithm");
+			Requires.NotNullOrEmpty(encryptionMethod, "encryptionMethod");
+			this.Algorithm = algorithm;
+			this.EncryptionMethod = encryptionMethod;
+		}
+
+		/// <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 value that identifies the symmetric encryption algorithm used to secure the Ciphertext.
+		/// A list of defined enc values is presented in Section 4, Table 3 of the JSON Web Algorithms (JWA) [JWA]
+		/// specification. The processing of the enc (encryption method) header parameter requires that the value
+		/// MUST be one that is supported. The enc value is case sensitive. This header parameter is REQUIRED.
+		/// </summary>
+		[MessagePart("enc", IsRequired = true, AllowEmpty = false)]
+		internal string EncryptionMethod { get; set; }
+
+		/// <summary>
+		/// Gets or sets a value that identifies the cryptographic algorithm used to safeguard the integrity of the
+		/// Ciphertext and the parameters used to create it. The int parameter uses the same values as the JWS alg
+		/// parameter; a list of defined JWS alg values is presented in Section 3, Table 1 of the JSON Web Algorithms
+		/// (JWA) [JWA] specification. This header parameter is REQUIRED when an AEAD algorithm is not used to encrypt
+		/// the Plaintext and MUST NOT be present when an AEAD algorithm is used.
+		/// </summary>
+		[MessagePart("int")]
+		internal string IntegrityAlgorithm { 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; }
+
+		/// <summary>
+		/// Gets or sets the initialization Vector (iv) value for algorithms requiring it, represented as a base64url encoded string.
+		/// This header parameter is OPTIONAL.
+		/// </summary>
+		[MessagePart("iv", Encoder = typeof(Base64WebEncoder))]
+		internal byte[] IV { get; set; }
+
+		/// <summary>
+		/// Gets or sets the compression algorithm (zip) applied to the Plaintext before encryption, if any.
+		/// This specification defines the value GZIP to refer to the encoding format produced by the file
+		/// compression program "gzip" (GNU zip) as described in [RFC1952]; this format is a Lempel-Ziv coding
+		/// (LZ77) with a 32 bit CRC. If no zip parameter is present, or its value is none, no compression is
+		/// applied to the Plaintext before encryption. The zip value is case sensitive. This header parameter is OPTIONAL.
+		/// </summary>
+		[MessagePart("zip")]
+		internal string CompressionAlgorithm { get; set; }
+	}
+}