diff options
Diffstat (limited to 'Crypto/src/openpgp/PgpSignatureSubpacketGenerator.cs')
| -rw-r--r-- | Crypto/src/openpgp/PgpSignatureSubpacketGenerator.cs | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/Crypto/src/openpgp/PgpSignatureSubpacketGenerator.cs b/Crypto/src/openpgp/PgpSignatureSubpacketGenerator.cs new file mode 100644 index 000000000..4adf64012 --- /dev/null +++ b/Crypto/src/openpgp/PgpSignatureSubpacketGenerator.cs @@ -0,0 +1,193 @@ +using System; +using System.Collections; + +using Org.BouncyCastle.Bcpg.Sig; +using Org.BouncyCastle.Utilities; + +namespace Org.BouncyCastle.Bcpg.OpenPgp +{ + /// <remarks>Generator for signature subpackets.</remarks> + public class PgpSignatureSubpacketGenerator + { + private IList list = Platform.CreateArrayList(); + + public void SetRevocable( + bool isCritical, + bool isRevocable) + { + list.Add(new Revocable(isCritical, isRevocable)); + } + + public void SetExportable( + bool isCritical, + bool isExportable) + { + list.Add(new Exportable(isCritical, isExportable)); + } + + /// <summary> + /// Add a TrustSignature packet to the signature. The values for depth and trust are largely + /// installation dependent but there are some guidelines in RFC 4880 - 5.2.3.13. + /// </summary> + /// <param name="isCritical">true if the packet is critical.</param> + /// <param name="depth">depth level.</param> + /// <param name="trustAmount">trust amount.</param> + public void SetTrust( + bool isCritical, + int depth, + int trustAmount) + { + list.Add(new TrustSignature(isCritical, depth, trustAmount)); + } + + /// <summary> + /// Set the number of seconds a key is valid for after the time of its creation. + /// A value of zero means the key never expires. + /// </summary> + /// <param name="isCritical">True, if should be treated as critical, false otherwise.</param> + /// <param name="seconds">The number of seconds the key is valid, or zero if no expiry.</param> + public void SetKeyExpirationTime( + bool isCritical, + long seconds) + { + list.Add(new KeyExpirationTime(isCritical, seconds)); + } + + /// <summary> + /// Set the number of seconds a signature is valid for after the time of its creation. + /// A value of zero means the signature never expires. + /// </summary> + /// <param name="isCritical">True, if should be treated as critical, false otherwise.</param> + /// <param name="seconds">The number of seconds the signature is valid, or zero if no expiry.</param> + public void SetSignatureExpirationTime( + bool isCritical, + long seconds) + { + list.Add(new SignatureExpirationTime(isCritical, seconds)); + } + + /// <summary> + /// Set the creation time for the signature. + /// <p> + /// Note: this overrides the generation of a creation time when the signature + /// is generated.</p> + /// </summary> + public void SetSignatureCreationTime( + bool isCritical, + DateTime date) + { + list.Add(new SignatureCreationTime(isCritical, date)); + } + + public void SetPreferredHashAlgorithms( + bool isCritical, + int[] algorithms) + { + list.Add(new PreferredAlgorithms(SignatureSubpacketTag.PreferredHashAlgorithms, isCritical, algorithms)); + } + + public void SetPreferredSymmetricAlgorithms( + bool isCritical, + int[] algorithms) + { + list.Add(new PreferredAlgorithms(SignatureSubpacketTag.PreferredSymmetricAlgorithms, isCritical, algorithms)); + } + + public void SetPreferredCompressionAlgorithms( + bool isCritical, + int[] algorithms) + { + list.Add(new PreferredAlgorithms(SignatureSubpacketTag.PreferredCompressionAlgorithms, isCritical, algorithms)); + } + + public void SetKeyFlags( + bool isCritical, + int flags) + { + list.Add(new KeyFlags(isCritical, flags)); + } + + public void SetSignerUserId( + bool isCritical, + string userId) + { + if (userId == null) + throw new ArgumentNullException("userId"); + + list.Add(new SignerUserId(isCritical, userId)); + } + + public void SetEmbeddedSignature( + bool isCritical, + PgpSignature pgpSignature) + { + byte[] sig = pgpSignature.GetEncoded(); + byte[] data; + + // TODO Should be >= ? + if (sig.Length - 1 > 256) + { + data = new byte[sig.Length - 3]; + } + else + { + data = new byte[sig.Length - 2]; + } + + Array.Copy(sig, sig.Length - data.Length, data, 0, data.Length); + + list.Add(new EmbeddedSignature(isCritical, data)); + } + + public void SetPrimaryUserId( + bool isCritical, + bool isPrimaryUserId) + { + list.Add(new PrimaryUserId(isCritical, isPrimaryUserId)); + } + + public void SetNotationData( + bool isCritical, + bool isHumanReadable, + string notationName, + string notationValue) + { + list.Add(new NotationData(isCritical, isHumanReadable, notationName, notationValue)); + } + + /// <summary> + /// Sets revocation reason sub packet + /// </summary> + public void SetRevocationReason(bool isCritical, RevocationReasonTag reason, + string description) + { + list.Add(new RevocationReason(isCritical, reason, description)); + } + + /// <summary> + /// Sets revocation key sub packet + /// </summary> + public void SetRevocationKey(bool isCritical, PublicKeyAlgorithmTag keyAlgorithm, byte[] fingerprint) + { + list.Add(new RevocationKey(isCritical, RevocationKeyTag.ClassDefault, keyAlgorithm, fingerprint)); + } + + /// <summary> + /// Sets issuer key sub packet + /// </summary> + public void SetIssuerKeyID(bool isCritical, long keyID) + { + list.Add(new IssuerKeyId(isCritical, keyID)); + } + + public PgpSignatureSubpacketVector Generate() + { + SignatureSubpacket[] a = new SignatureSubpacket[list.Count]; + for (int i = 0; i < list.Count; ++i) + { + a[i] = (SignatureSubpacket)list[i]; + } + return new PgpSignatureSubpacketVector(a); + } + } +} |