aboutsummaryrefslogtreecommitdiffstats
path: root/libparc/parc/security/parc_Signer.h
blob: bee68fd2e2d99b23576bb666d35ad9aab9b06770 (plain)
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
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
/*
 * Copyright (c) 2017 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * @file parc_Signer.h
 * @ingroup security
 * @brief The API a crytography provider must interfaceement.
 *
 * A signer IS NOT THREAD-SAFE.
 *
 */
#ifndef libparc_parc_Signer_h
#define libparc_parc_Signer_h

#include <parc/algol/parc_Object.h>
#include <parc/algol/parc_Buffer.h>
#include <parc/security/parc_CryptoHasher.h>
#include <parc/security/parc_CryptoSuite.h>
#include <parc/security/parc_Signature.h>
#include <parc/security/parc_CryptoHashType.h>
#include <parc/security/parc_Key.h>
#include <parc/security/parc_KeyStore.h>

struct parc_signer;
/**
 * @typedef PARCSigner
 * @brief The structure for PARCSigner
 */

typedef struct parc_signer PARCSigner;

/**
 * @def parcSigner_OptionalAssertValid
 * Optional validation of the given instance.
 *
 * Define `PARCLibrary_DISABLE_VALIDATION` to disable validation.
 */
#ifdef PARCLibrary_DISABLE_VALIDATION
#  define parcSigner_OptionalAssertValid(_instance_)
#else
#  define parcSigner_OptionalAssertValid(_instance_) parcSigner_AssertValid(_instance_)
#endif

/**
 * @typedef PARCSigningInterface
 * @brief The CCN signing implementation structure.
 *
 * This defines the contract that any concrete implementation provides.
 *
 */
typedef struct parc_signer_interface {
    /**
     * Returns a the hasher to use for the signature.  This is important for
     * symmetric key HMAC to use this hasher, not one from PARCCryptoHasher.
     *
     * DO NOT DESTROY THIS HASHER!  Just call _Init, _Update, and _Finalize.
     *
     * The hash type will be based on how the underlying implementation was initialized
     *
     * Equivalent of (for rsa/sha256)
     *    openssl rsautl -sign -inkey test_rsa_key.pem -in infile_digest -out infile.sig
     *
     * @param [in] interfaceContextPtr A pointer to a concrete PARCSigner instance.
     */
    PARCCryptoHasher *(*GetCryptoHasher)(void *interfaceContext);

    /**
     * Compute the signature of the given PARCCryptoHash.
     *
     * Equivalent of (for rsa/sha256)
     *    openssl rsautl -sign -inkey test_rsa_key.pem -in infile_digest -out infile.sig
     *
     * @param [in] interfaceContextPtr A pointer to a concrete PARCSigner instance.
     * @param [in] hashToSign The output of the given digest to sign
     *
     * @return A pointer to a PARCSignature instance that must be released via parcSignature_Release()
     */
    PARCSignature *(*SignDigest)(void *interfaceContext, const PARCCryptoHash * parcDigest);

    /**
     * Return the PARSigningAlgorithm used for signing with the given `PARCSigner`
     *
     * @param [in] interfaceContext A pointer to a concrete PARCSigner instance.
     *
     * @return A PARSigningAlgorithm value.
     */
    PARCSigningAlgorithm (*GetSigningAlgorithm)(void *interfaceContext);

    /**
     * Return the digest algorithm used by the Signer
     *
     * @param [in] interfaceContext A pointer to a concrete PARCSigner instance.
     *
     * @return A PARCCryptoHashType value.
     */
    PARCCryptoHashType (*GetCryptoHashType)(void *interfaceContext);

    /**
     * Return the PARCKeyStore for this Signer.
     *
     * @param [in] interfaceContext A pointer to a concrete PARCSigner instance.
     *
     * @return A PARCKeyStore instance.
     */
    PARCKeyStore *(*GetKeyStore)(void *interfaceContext);

    /**
     * Return the key size for this Signer.
     *
     * @param [in] interfaceContext A pointer to a concrete PARCSigner instance.
     *
     * @return A size_t
     */
    size_t (*GetSignatureSize)(void *interfaceContext);
} PARCSigningInterface;

/**
 * Assert that an instance of `PARCSigner` is valid.
 *
 * If the instance is not valid, terminate via {@link parcTrapIllegalValue}
 *
 * Valid means the internal state of the type is consistent with its
 * required current or future behaviour.
 * This may include the validation of internal instances of types.
 *
 * @param [in] signer A pointer to a PARCSigner instance.
 *
 * Example
 * @code
 * {
 *     PARCSigner *signer = parcSigner_Create(publicKeySigner, PARCRSASignerAsSigner);
 *
 *     parcSigner_AssertValid(signer);
 * }
 * @endcode
 */
void parcSigner_AssertValid(const PARCSigner *signer);

/**
 * Create a signing context based on a concrete implementation.
 *
 * @param [in] instance A concrete implementation of a `PARCSigner`
 * @param [in] interfaceContext The interface of a concrete implementation of a `PARCSigner`
 *
 * @return NULL A `PARCSigner` could not be allocated
 * @return PARCSigner A new `PARCSigner` instance derived from the specified concrete signer context.
 *
 * Example:
 * @code
 * {
 *     PARCSigner *signer = parcSigner_Create(publicKeySigner, PARCRSASignerAsSigner);
 * }
 * @endcode
 */
PARCSigner *parcSigner_Create(PARCObject *instance, PARCSigningInterface *interfaceContext);

/**
 * Increase the number of references to the given `PARCSigner` instance.
 *
 * A new instance is not created,
 * only that the given instance's reference count is incremented.
 * Discard the acquired reference by invoking `parcSigner_Release()`.
 *
 * @param [in] signer A pointer to a `PARCSigner` instance.
 *
 * @return NULL An error occurred.
 * @return non-NULL A pointer to a PARCSigner instance.
 *
 * Example:
 * @code
 * {
 *      PARCSigner *signer = parcSigner_Create(publicKeySigner, PARCRSASignerAsSigner);
 *      PARCSigner *handle = parcSigner_Acquire(signer);
 *      // use the handle instance as needed
 * }
 * @endcode
 */
PARCSigner *parcSigner_Acquire(const PARCSigner *signer);

/**
 * Release a previously acquired reference to the specified instance,
 * decrementing the reference count for the instance.
 *
 * The pointer to the instance is set to NULL as a side-effect of this function.
 *
 * If the invocation causes the last reference to the instance to be released,
 * the instance is deallocated and the instance's implementation will perform
 * additional cleanup and release other privately held references.
 *
 * The contents of the dealloced memory used for the PARC object are undefined.
 * Do not reference the object after the last release.
 *
 * @param [in,out] signerPtr A pointer to a pointer to the instance to release.
 *
 * Example:
 * @code
 * {
 *     PARCSigner *signer = parcSigner_Create(publicKeySigner, PARCRSASignerAsSigner);
 *
 *     parcSigner_Release(&signer);
 * }
 * @endcode
 */
void parcSigner_Release(PARCSigner **signerPtr);

/**
 * Create a PARCKeyId instance from the given pinter to a `PARCSigner` instance.
 *
 * @param [in] signer A pointer to a PARCSigner instance.
 *
 * @return A pointer to a created PARCKeyId instance that must be released via `parcKeyId_Release()`
 *
 * Example:
 * @code
 * {
 *      PARCSigner *signer = parcSigner_Create(publicKeySigner, PARCRSASignerAsSigner);
 *
 *      PARCKeyId *keyId = parcSigner_CreateKeyId(signer);
 * }
 * @endcode
 */
PARCKeyId *parcSigner_CreateKeyId(const PARCSigner *signer);

/**
 * Get the DER encoded public key and keyid wrapped in a `PARCKey` instance.
 *
 * @param [in] signer A pointer to a PARCSigner instance.
 *
 * @return A newly allocated `PARCKey` instance containing the public key used to verify signatures computed by this signer.
 *
 * Example:
 * @code
 * {
 *      PARCSigner *signer = parcSigner_Create(publicKeySigner, PARCRSASignerAsSigner);
 *
 *      PARCKey *publicKey = parcSigner_CreatePublicKey(signer);
 * }
 * @endcode
 */
PARCKey *parcSigner_CreatePublicKey(PARCSigner *signer);

/**
 * Returns a the hasher to use for the signature.  This is important for
 * symmetric key HMAC to use this hasher, not one from PARCCryptoHasher.
 *
 * DO NOT DESTROY THIS HASHER!  Just call _Init, _Update, and _Finalize.
 *
 * The hash type will be based on how the underlying implementation was initialized
 *
 * Equivalent of (for rsa/sha256)
 *    openssl rsautl -sign -inkey test_rsa_key.pem -in infile_digest -out infile.sig
 *
 * @param [in] signer A pointer to a PARCSigner instance.
 *
 * Example:
 * @code
 * {
 *      PARCSigner *signer = parcSigner_Create(publicKeySigner, PARCRSASignerAsSigner);
 *
 *      PARCCryptoHasher hasher = parcSigner_GetCryptoHasher(signer);
 * }
 * @endcode
 */
PARCCryptoHasher *parcSigner_GetCryptoHasher(const PARCSigner *signer);

/**
 * Compute the signature of the given PARCCryptoHash.
 *
 * Equivalent of (for rsa/sha256)
 *    openssl rsautl -sign -inkey test_rsa_key.pem -in infile_digest -out infile.sig
 *
 * @param [in] signer A pointer to a PARCSigner instance.
 * @param [in] hashToSign The output of the given digest
 *
 * @return A pointer to a PARCSignature instance that must be released via parcSignature_Release()
 *
 * Example:
 * @code
 * {
 *     PARCSigner *signer = parcSigner_Create(publicKeySigner, PARCRSASignerAsSigner);
 *
 *     PARCCryptoHasher *hasher = parcSigner_GetCryptoHasher(signer);
 *     parcCryptoHasher_Init(hasher);
 *     parcCryptoHasher_Update_Bytes(hasher, &block->memory[relativePosition], length);
 *     PARCCryptoHash *hashToSign = parcCryptoHasher_Finalize(hasher);
 *
 *     PARCSignature signature = parcSigner_SignDigest(signer, hashToSign);
 * }
 * @endcode
 */
PARCSignature *parcSigner_SignDigest(const PARCSigner *signer, const PARCCryptoHash *hashToSign);

/**
 * Compute the signature of a given `PARCBuffer`.
 *
 * @param [in] signer A pointer to a PARCSigner instance.
 * @param [in] buffer The input to be hashed and signed.
 *
 * @return A pointer to a PARCSignature instance that must be released via parcSignature_Release()
 *
 * Example:
 * @code
 * {
 *     PARCSigner *signer = parcSigner_Create(publicKeySigner, PARCRSASignerAsSigner);
 *     PARCBuffer *inputBuffer = ...
 *
 *     PARCSignature signature = parcSigner_SignBuffer(signer, inputBuffer);
 * }
 * @endcode
 */
PARCSignature *parcSigner_SignBuffer(const PARCSigner *signer, const PARCBuffer *buffer);

/**
 * Return the PARSigningAlgorithm used for signing with the given `PARCSigner`
 *
 * @param [in] signer A pointer to a PARCSigner instance.
 *
 * @return A PARSigningAlgorithm value.
 *
 * Example:
 * @code
 * {
 *      PARCSigner *signer = parcSigner_Create(publicKeySigner, PARCRSASignerAsSigner);
 *
 *      PARCSigningAlgorithm suite = parcSigner_GetSigningAlgorithm(signer);
 * }
 * @endcode
 */
PARCSigningAlgorithm parcSigner_GetSigningAlgorithm(PARCSigner *signer);

/**
 * Return the digest algorithm used by the Signer
 *
 * @param [in] signer A pointer to a PARCSigner instance.
 *
 * @return A PARCCryptoHashType value.
 *
 * Example:
 * @code
 * {
 *      PARCSigner *signer = parcSigner_Create(publicKeySigner, PARCRSASignerAsSigner);
 *
 *      PARCCryptoHashType suite = parcSigner_GetCryptoHashType(signer);
 * }
 * @endcode
 */
PARCCryptoHashType parcSigner_GetCryptoHashType(const PARCSigner *signer);

/**
 * Return the crypto suite used by the Signer
 *
 * @param [in] signer A pointer to a PARCSigner instance.
 *
 * @return A PARCCryptoSuite value.
 *
 * Example:
 * @code
 * {
 *      PARCSigner *signer = parcSigner_Create(publicKeySigner, PARCRSASignerAsSigner);
 *
 *      PARCCryptoSuite suite = parcSigner_GetCryptoSuite(signer);
 * }
 * @endcode
 */
PARCCryptoSuite parcSigner_GetCryptoSuite(const PARCSigner *signer);

/**
 * Given a `PARCSigner` instance, return the `PARCKeyStore` containing its public key information.
 *
 * @param [in] signer A pointer to a `PARCSigner` instance.
 *
 * @return A `PARCKeyStore` instance.
 *
 * Example:
 * @code
 * {
 *      PARCSigner *signer = parcSigner_Create(publicKeySigner, PARCRSASignerAsSigner);
 *
 *      PARCKeyStore *keyStore = parcSigner_GetKeyStore(signer);
 * }
 * @endcode
 */
PARCKeyStore *parcSigner_GetKeyStore(const PARCSigner *signer);

/**
 * Given a `PARCSigner` instance, return the expected size of the signature.
 *
 * @param [in] signer A pointer to a `PARCSigner` instance.
 *
 * @return A size_t with the size of the key.
 *
 * Example:
 * @code
 * {
 *      PARCSigner *signer = parcSigner_Create(publicKeySigner, PARCRSASignerAsSigner);
 *
 *      PARCKeyStore *keyStore = parcSigner_GetKeyStore(signer);
 * }
 * @endcode
 */
size_t parcSigner_GetSignatureSize(const PARCSigner *signer);
#endif // libparc_parc_Signer_h