1 files changed, 229 insertions, 0 deletions
diff --git a/Crypto/src/openpgp/PgpSignatureSubpacketVector.cs b/Crypto/src/openpgp/PgpSignatureSubpacketVector.cs
new file mode 100644
index 000000000..68fe4b594
--- /dev/null
+++ b/Crypto/src/openpgp/PgpSignatureSubpacketVector.cs
@@ -0,0 +1,229 @@
+using System;
+using System.Collections;
+
+using Org.BouncyCastle.Bcpg.Sig;
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Bcpg.OpenPgp
+{
+ /// <remarks>Container for a list of signature subpackets.</remarks>
+ public class PgpSignatureSubpacketVector
+ {
+ private readonly SignatureSubpacket[] packets;
+
+ internal PgpSignatureSubpacketVector(
+ SignatureSubpacket[] packets)
+ {
+ this.packets = packets;
+ }
+
+ public SignatureSubpacket GetSubpacket(
+ SignatureSubpacketTag type)
+ {
+ for (int i = 0; i != packets.Length; i++)
+ {
+ if (packets[i].SubpacketType == type)
+ {
+ return packets[i];
+ }
+ }
+
+ return null;
+ }
+
+ /**
+ * Return true if a particular subpacket type exists.
+ *
+ * @param type type to look for.
+ * @return true if present, false otherwise.
+ */
+ public bool HasSubpacket(
+ SignatureSubpacketTag type)
+ {
+ return GetSubpacket(type) != null;
+ }
+
+ /**
+ * Return all signature subpackets of the passed in type.
+ * @param type subpacket type code
+ * @return an array of zero or more matching subpackets.
+ */
+ public SignatureSubpacket[] GetSubpackets(
+ SignatureSubpacketTag type)
+ {
+ int count = 0;
+ for (int i = 0; i < packets.Length; ++i)
+ {
+ if (packets[i].SubpacketType == type)
+ {
+ ++count;
+ }
+ }
+
+ SignatureSubpacket[] result = new SignatureSubpacket[count];
+
+ int pos = 0;
+ for (int i = 0; i < packets.Length; ++i)
+ {
+ if (packets[i].SubpacketType == type)
+ {
+ result[pos++] = packets[i];
+ }
+ }
+
+ return result;
+ }
+
+ public NotationData[] GetNotationDataOccurences()
+ {
+ SignatureSubpacket[] notations = GetSubpackets(SignatureSubpacketTag.NotationData);
+ NotationData[] vals = new NotationData[notations.Length];
+
+ for (int i = 0; i < notations.Length; i++)
+ {
+ vals[i] = (NotationData) notations[i];
+ }
+
+ return vals;
+ }
+
+ public long GetIssuerKeyId()
+ {
+ SignatureSubpacket p = GetSubpacket(SignatureSubpacketTag.IssuerKeyId);
+
+ return p == null ? 0 : ((IssuerKeyId) p).KeyId;
+ }
+
+ public bool HasSignatureCreationTime()
+ {
+ return GetSubpacket(SignatureSubpacketTag.CreationTime) != null;
+ }
+
+ public DateTime GetSignatureCreationTime()
+ {
+ SignatureSubpacket p = GetSubpacket(SignatureSubpacketTag.CreationTime);
+
+ if (p == null)
+ {
+ throw new PgpException("SignatureCreationTime not available");
+ }
+
+ return ((SignatureCreationTime)p).GetTime();
+ }
+
+ /// <summary>
+ /// Return the number of seconds a signature is valid for after its creation date.
+ /// A value of zero means the signature never expires.
+ /// </summary>
+ /// <returns>Seconds a signature is valid for.</returns>
+ public long GetSignatureExpirationTime()
+ {
+ SignatureSubpacket p = GetSubpacket(SignatureSubpacketTag.ExpireTime);
+
+ return p == null ? 0 : ((SignatureExpirationTime) p).Time;
+ }
+
+ /// <summary>
+ /// Return the number of seconds a key is valid for after its creation date.
+ /// A value of zero means the key never expires.
+ /// </summary>
+ /// <returns>Seconds a signature is valid for.</returns>
+ public long GetKeyExpirationTime()
+ {
+ SignatureSubpacket p = GetSubpacket(SignatureSubpacketTag.KeyExpireTime);
+
+ return p == null ? 0 : ((KeyExpirationTime) p).Time;
+ }
+
+ public int[] GetPreferredHashAlgorithms()
+ {
+ SignatureSubpacket p = GetSubpacket(SignatureSubpacketTag.PreferredHashAlgorithms);
+
+ return p == null ? null : ((PreferredAlgorithms) p).GetPreferences();
+ }
+
+ public int[] GetPreferredSymmetricAlgorithms()
+ {
+ SignatureSubpacket p = GetSubpacket(SignatureSubpacketTag.PreferredSymmetricAlgorithms);
+
+ return p == null ? null : ((PreferredAlgorithms) p).GetPreferences();
+ }
+
+ public int[] GetPreferredCompressionAlgorithms()
+ {
+ SignatureSubpacket p = GetSubpacket(SignatureSubpacketTag.PreferredCompressionAlgorithms);
+
+ return p == null ? null : ((PreferredAlgorithms) p).GetPreferences();
+ }
+
+ public int GetKeyFlags()
+ {
+ SignatureSubpacket p = GetSubpacket(SignatureSubpacketTag.KeyFlags);
+
+ return p == null ? 0 : ((KeyFlags) p).Flags;
+ }
+
+ public string GetSignerUserId()
+ {
+ SignatureSubpacket p = GetSubpacket(SignatureSubpacketTag.SignerUserId);
+
+ return p == null ? null : ((SignerUserId) p).GetId();
+ }
+
+ public bool IsPrimaryUserId()
+ {
+ PrimaryUserId primaryId = (PrimaryUserId)
+ this.GetSubpacket(SignatureSubpacketTag.PrimaryUserId);
+
+ if (primaryId != null)
+ {
+ return primaryId.IsPrimaryUserId();
+ }
+
+ return false;
+ }
+
+ public SignatureSubpacketTag[] GetCriticalTags()
+ {
+ int count = 0;
+ for (int i = 0; i != packets.Length; i++)
+ {
+ if (packets[i].IsCritical())
+ {
+ count++;
+ }
+ }
+
+ SignatureSubpacketTag[] list = new SignatureSubpacketTag[count];
+
+ count = 0;
+
+ for (int i = 0; i != packets.Length; i++)
+ {
+ if (packets[i].IsCritical())
+ {
+ list[count++] = packets[i].SubpacketType;
+ }
+ }
+
+ return list;
+ }
+
+ [Obsolete("Use 'Count' property instead")]
+ public int Size
+ {
+ get { return packets.Length; }
+ }
+
+ /// <summary>Return the number of packets this vector contains.</summary>
+ public int Count
+ {
+ get { return packets.Length; }
+ }
+
+ internal SignatureSubpacket[] ToSubpacketArray()
+ {
+ return packets;
+ }
+ }
+}
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