summary refs log tree commit diff
path: root/crypto/src/openpgp/PgpSecretKeyRingBundle.cs
blob: c9f4d395953027741cd8300b2777a8236670da6b (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
using System;
using System.Collections;
using System.IO;

using Org.BouncyCastle.Utilities;
using Org.BouncyCastle.Utilities.Collections;

namespace Org.BouncyCastle.Bcpg.OpenPgp
{
	/// <remarks>
	/// Often a PGP key ring file is made up of a succession of master/sub-key key rings.
	/// If you want to read an entire secret key file in one hit this is the class for you.
	/// </remarks>
    public class PgpSecretKeyRingBundle
    {
        private readonly IDictionary secretRings;
        private readonly IList order;

		private PgpSecretKeyRingBundle(
            IDictionary	secretRings,
            IList       order)
        {
            this.secretRings = secretRings;
            this.order = order;
        }

		public PgpSecretKeyRingBundle(
            byte[] encoding)
            : this(new MemoryStream(encoding, false))
		{
        }

		/// <summary>Build a PgpSecretKeyRingBundle from the passed in input stream.</summary>
		/// <param name="inputStream">Input stream containing data.</param>
		/// <exception cref="IOException">If a problem parsing the stream occurs.</exception>
		/// <exception cref="PgpException">If an object is encountered which isn't a PgpSecretKeyRing.</exception>
		public PgpSecretKeyRingBundle(
            Stream inputStream)
			: this(new PgpObjectFactory(inputStream).AllPgpObjects())
        {
        }

		public PgpSecretKeyRingBundle(
            IEnumerable e)
        {
			this.secretRings = Platform.CreateHashtable();
            this.order = Platform.CreateArrayList();

			foreach (object obj in e)
			{
				PgpSecretKeyRing pgpSecret = obj as PgpSecretKeyRing;

				if (pgpSecret == null)
				{
					throw new PgpException(Platform.GetTypeName(obj) + " found where PgpSecretKeyRing expected");
				}

				long key = pgpSecret.GetPublicKey().KeyId;
				secretRings.Add(key, pgpSecret);
				order.Add(key);
			}
        }

		[Obsolete("Use 'Count' property instead")]
		public int Size
		{
			get { return order.Count; }
		}

		/// <summary>Return the number of rings in this collection.</summary>
		public int Count
        {
			get { return order.Count; }
        }

		/// <summary>Allow enumeration of the secret key rings making up this collection.</summary>
		public IEnumerable GetKeyRings()
        {
            return new EnumerableProxy(secretRings.Values);
        }

		/// <summary>Allow enumeration of the key rings associated with the passed in userId.</summary>
		/// <param name="userId">The user ID to be matched.</param>
		/// <returns>An <c>IEnumerable</c> of key rings which matched (possibly none).</returns>
		public IEnumerable GetKeyRings(
			string userId)
		{
			return GetKeyRings(userId, false, false);
		}

		/// <summary>Allow enumeration of the key rings associated with the passed in userId.</summary>
		/// <param name="userId">The user ID to be matched.</param>
		/// <param name="matchPartial">If true, userId need only be a substring of an actual ID string to match.</param>
		/// <returns>An <c>IEnumerable</c> of key rings which matched (possibly none).</returns>
		public IEnumerable GetKeyRings(
            string	userId,
            bool	matchPartial)
        {
			return GetKeyRings(userId, matchPartial, false);
        }

		/// <summary>Allow enumeration of the key rings associated with the passed in userId.</summary>
		/// <param name="userId">The user ID to be matched.</param>
		/// <param name="matchPartial">If true, userId need only be a substring of an actual ID string to match.</param>
		/// <param name="ignoreCase">If true, case is ignored in user ID comparisons.</param>
		/// <returns>An <c>IEnumerable</c> of key rings which matched (possibly none).</returns>
		public IEnumerable GetKeyRings(
			string	userId,
			bool	matchPartial,
			bool	ignoreCase)
		{
            IList rings = Platform.CreateArrayList();

			if (ignoreCase)
			{
                userId = Platform.ToUpperInvariant(userId);
            }

			foreach (PgpSecretKeyRing secRing in GetKeyRings())
			{
				foreach (string nextUserID in secRing.GetSecretKey().UserIds)
				{
					string next = nextUserID;
					if (ignoreCase)
					{
                        next = Platform.ToUpperInvariant(next);
                    }

					if (matchPartial)
					{
                        if (Platform.IndexOf(next, userId) > -1)
						{
							rings.Add(secRing);
						}
					}
					else
					{
						if (next.Equals(userId))
						{
							rings.Add(secRing);
						}
					}
				}
			}

			return new EnumerableProxy(rings);
		}

		/// <summary>Return the PGP secret key associated with the given key id.</summary>
		/// <param name="keyId">The ID of the secret key to return.</param>
		public PgpSecretKey GetSecretKey(
            long keyId)
        {
            foreach (PgpSecretKeyRing secRing in GetKeyRings())
            {
                PgpSecretKey sec = secRing.GetSecretKey(keyId);

				if (sec != null)
                {
                    return sec;
                }
            }

            return null;
        }

		/// <summary>Return the secret key ring which contains the key referred to by keyId</summary>
		/// <param name="keyId">The ID of the secret key</param>
		public PgpSecretKeyRing GetSecretKeyRing(
            long keyId)
        {
            long id = keyId;

            if (secretRings.Contains(id))
            {
                return (PgpSecretKeyRing) secretRings[id];
            }

			foreach (PgpSecretKeyRing secretRing in GetKeyRings())
            {
                PgpSecretKey secret = secretRing.GetSecretKey(keyId);

                if (secret != null)
                {
                    return secretRing;
                }
            }

            return null;
        }

		/// <summary>
		/// Return true if a key matching the passed in key ID is present, false otherwise.
		/// </summary>
		/// <param name="keyID">key ID to look for.</param>
		public bool Contains(
			long keyID)
		{
			return GetSecretKey(keyID) != null;
		}

		public byte[] GetEncoded()
        {
            MemoryStream bOut = new MemoryStream();

			Encode(bOut);

			return bOut.ToArray();
        }

		public void Encode(
			Stream outStr)
        {
			BcpgOutputStream bcpgOut = BcpgOutputStream.Wrap(outStr);

			foreach (long key in order)
            {
                PgpSecretKeyRing pub = (PgpSecretKeyRing) secretRings[key];

				pub.Encode(bcpgOut);
            }
        }

		/// <summary>
		/// Return a new bundle containing the contents of the passed in bundle and
		/// the passed in secret key ring.
		/// </summary>
		/// <param name="bundle">The <c>PgpSecretKeyRingBundle</c> the key ring is to be added to.</param>
		/// <param name="secretKeyRing">The key ring to be added.</param>
		/// <returns>A new <c>PgpSecretKeyRingBundle</c> merging the current one with the passed in key ring.</returns>
		/// <exception cref="ArgumentException">If the keyId for the passed in key ring is already present.</exception>
        public static PgpSecretKeyRingBundle AddSecretKeyRing(
            PgpSecretKeyRingBundle  bundle,
            PgpSecretKeyRing        secretKeyRing)
        {
            long key = secretKeyRing.GetPublicKey().KeyId;

            if (bundle.secretRings.Contains(key))
            {
                throw new ArgumentException("Collection already contains a key with a keyId for the passed in ring.");
            }

            IDictionary newSecretRings = Platform.CreateHashtable(bundle.secretRings);
            IList newOrder = Platform.CreateArrayList(bundle.order);

            newSecretRings[key] = secretKeyRing;
            newOrder.Add(key);

            return new PgpSecretKeyRingBundle(newSecretRings, newOrder);
        }

		/// <summary>
		/// Return a new bundle containing the contents of the passed in bundle with
		/// the passed in secret key ring removed.
		/// </summary>
		/// <param name="bundle">The <c>PgpSecretKeyRingBundle</c> the key ring is to be removed from.</param>
		/// <param name="secretKeyRing">The key ring to be removed.</param>
		/// <returns>A new <c>PgpSecretKeyRingBundle</c> not containing the passed in key ring.</returns>
		/// <exception cref="ArgumentException">If the keyId for the passed in key ring is not present.</exception>
        public static PgpSecretKeyRingBundle RemoveSecretKeyRing(
            PgpSecretKeyRingBundle  bundle,
            PgpSecretKeyRing        secretKeyRing)
        {
            long key = secretKeyRing.GetPublicKey().KeyId;

			if (!bundle.secretRings.Contains(key))
            {
                throw new ArgumentException("Collection does not contain a key with a keyId for the passed in ring.");
            }

            IDictionary newSecretRings = Platform.CreateHashtable(bundle.secretRings);
            IList newOrder = Platform.CreateArrayList(bundle.order);

			newSecretRings.Remove(key);
			newOrder.Remove(key);

			return new PgpSecretKeyRingBundle(newSecretRings, newOrder);
        }
    }
}