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source: vbox/trunk/src/VBox/Runtime/common/crypto/key.cpp

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1/* $Id: key.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
2/** @file
3 * IPRT - Crypto - Cryptographic Keys.
4 */
5
6/*
7 * Copyright (C) 2006-2024 Oracle and/or its affiliates.
8 *
9 * This file is part of VirtualBox base platform packages, as
10 * available from https://www.virtualbox.org.
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation, in version 3 of the
15 * License.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, see <https://www.gnu.org/licenses>.
24 *
25 * The contents of this file may alternatively be used under the terms
26 * of the Common Development and Distribution License Version 1.0
27 * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
28 * in the VirtualBox distribution, in which case the provisions of the
29 * CDDL are applicable instead of those of the GPL.
30 *
31 * You may elect to license modified versions of this file under the
32 * terms and conditions of either the GPL or the CDDL or both.
33 *
34 * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
35 */
36
37
38/*********************************************************************************************************************************
39* Header Files *
40*********************************************************************************************************************************/
41#define LOG_GROUP RTLOGGROUP_CRYPTO
42#include "internal/iprt.h"
43#include <iprt/crypto/key.h>
44
45#include <iprt/asm.h>
46#include <iprt/assert.h>
47#include <iprt/err.h>
48#include <iprt/log.h>
49#include <iprt/mem.h>
50#include <iprt/memsafer.h>
51#include <iprt/string.h>
52#include <iprt/crypto/rsa.h>
53#include <iprt/crypto/pkix.h>
54
55#include "internal/magics.h"
56#include "key-internal.h"
57
58
59/**
60 * Internal crypto key instance creator.
61 *
62 * This does most of the common work, caller does the 'u' and cBits jobs.
63 *
64 * @returns IPRT status code.
65 * @param ppThis Where to return the key instance.
66 * @param enmType The key type.
67 * @param fFlags The key flags.
68 * @param pvEncoded The encoded key bits.
69 * @param cbEncoded The size of the encoded key bits (in bytes).
70 */
71DECLHIDDEN(int) rtCrKeyCreateWorker(PRTCRKEYINT *ppThis, RTCRKEYTYPE enmType, uint32_t fFlags,
72 void const *pvEncoded, uint32_t cbEncoded)
73{
74 PRTCRKEYINT pThis = (PRTCRKEYINT)RTMemAllocZ(sizeof(*pThis) + (fFlags & RTCRKEYINT_F_SENSITIVE ? 0 : cbEncoded));
75 if (pThis)
76 {
77 pThis->enmType = enmType;
78 pThis->fFlags = fFlags;
79#if defined(IPRT_WITH_OPENSSL)
80 pThis->fFlags |= RTCRKEYINT_F_INCLUDE_ENCODED;
81 pThis->cbEncoded = cbEncoded;
82 if (!(fFlags & RTCRKEYINT_F_SENSITIVE))
83 pThis->pbEncoded = (uint8_t *)(pThis + 1);
84 else
85 {
86 pThis->pbEncoded = (uint8_t *)RTMemSaferAllocZ(cbEncoded);
87 if (!pThis->pbEncoded)
88 {
89 RTMemFree(pThis);
90 return VERR_NO_MEMORY;
91 }
92 }
93 memcpy(pThis->pbEncoded, pvEncoded, cbEncoded);
94#else
95 RT_NOREF(pvEncoded, cbEncoded);
96#endif
97 pThis->cRefs = 1;
98 pThis->u32Magic = RTCRKEYINT_MAGIC;
99 *ppThis = pThis;
100 return VINF_SUCCESS;
101 }
102 return VERR_NO_MEMORY;
103}
104
105
106/**
107 * Creates an RSA public key from a DER encoded RTCRRSAPUBLICKEY blob.
108 *
109 * @returns IPRT status code.
110 * @param phKey Where to return the key handle.
111 * @param pvKeyBits The DER encoded RTCRRSAPUBLICKEY blob.
112 * @param cbKeyBits The size of the blob.
113 * @param pErrInfo Where to supply addition error details. Optional.
114 * @param pszErrorTag Error tag. Optional.
115 */
116DECLHIDDEN(int) rtCrKeyCreateRsaPublic(PRTCRKEY phKey, const void *pvKeyBits, uint32_t cbKeyBits,
117 PRTERRINFO pErrInfo, const char *pszErrorTag)
118{
119 /*
120 * Decode the key data first since that's what's most likely to fail here.
121 */
122 RTASN1CURSORPRIMARY PrimaryCursor;
123 RTAsn1CursorInitPrimary(&PrimaryCursor, pvKeyBits, cbKeyBits, pErrInfo, &g_RTAsn1DefaultAllocator,
124 RTASN1CURSOR_FLAGS_DER, pszErrorTag ? pszErrorTag : "rsa");
125 RTCRRSAPUBLICKEY PublicKey;
126 RT_ZERO(PublicKey);
127 int rc = RTCrRsaPublicKey_DecodeAsn1(&PrimaryCursor.Cursor, 0, &PublicKey, pszErrorTag ? pszErrorTag : "PublicKey");
128 if (RT_SUCCESS(rc))
129 {
130 /*
131 * Create a key instance for it.
132 */
133 PRTCRKEYINT pThis;
134 rc = rtCrKeyCreateWorker(&pThis, RTCRKEYTYPE_RSA_PUBLIC, RTCRKEYINT_F_PUBLIC, pvKeyBits, cbKeyBits);
135 if (RT_SUCCESS(rc))
136 {
137 rc = RTAsn1Integer_ToBigNum(&PublicKey.Modulus, &pThis->u.RsaPublic.Modulus, 0);
138 if (RT_SUCCESS(rc))
139 {
140 pThis->cBits = RTBigNumBitWidth(&pThis->u.RsaPublic.Modulus);
141 rc = RTAsn1Integer_ToBigNum(&PublicKey.PublicExponent, &pThis->u.RsaPublic.Exponent, 0);
142 if (RT_SUCCESS(rc))
143 {
144
145 /* Done. */
146 RTAsn1VtDelete(&PublicKey.SeqCore.Asn1Core);
147 *phKey = pThis;
148 return VINF_SUCCESS;
149 }
150 }
151 RTCrKeyRelease(pThis);
152 }
153 RTAsn1VtDelete(&PublicKey.SeqCore.Asn1Core);
154 }
155 *phKey = NIL_RTCRKEY;
156 return rc;
157}
158
159
160/**
161 * Creates an EC (ECDSA) public key from a DER encoded RTCRX50-PUBLICKEY blob.
162 *
163 * @returns IPRT status code.
164 * @param phKey Where to return the key handle.
165 * @param pParameters The algorithm parameters, typically namedCurve OID.
166 * @param pvKeyBits The DER encoded RTCRRSAPUBLICKEY blob.
167 * @param cbKeyBits The size of the blob.
168 * @param pErrInfo Where to supply addition error details. Optional.
169 * @param pszErrorTag Error tag. Optional.
170 */
171DECLHIDDEN(int) rtCrKeyCreateEcdsaPublic(PRTCRKEY phKey, PCRTASN1DYNTYPE pParameters, const void *pvKeyBits, uint32_t cbKeyBits,
172 PRTERRINFO pErrInfo, const char *pszErrorTag)
173{
174#if 0
175 /*
176 * Decode the key data first since that's what's most likely to fail here.
177 */
178 RTASN1CURSORPRIMARY PrimaryCursor;
179 RTAsn1CursorInitPrimary(&PrimaryCursor, pvKeyBits, cbKeyBits, pErrInfo, &g_RTAsn1DefaultAllocator,
180 RTASN1CURSOR_FLAGS_DER, pszErrorTag ? pszErrorTag : "rsa");
181 RTCRRSAPUBLICKEY PublicKey;
182 RT_ZERO(PublicKey);
183 int rc = RTCrRsaPublicKey_DecodeAsn1(&PrimaryCursor.Cursor, 0, &PublicKey, pszErrorTag ? pszErrorTag : "PublicKey");
184#else
185 RT_NOREF(pszErrorTag);
186 int rc = VINF_SUCCESS;
187#endif
188 if (RT_SUCCESS(rc))
189 {
190 /*
191 * Check the parameter (see RTC-5480, section 2.1.1).
192 */
193 if ( pParameters
194 && pParameters->enmType == RTASN1TYPE_OBJID
195 && RTAsn1ObjId_IsPresent(&pParameters->u.ObjId) /* paranoia */)
196 {
197 /*
198 * Create a key instance for it.
199 */
200 PRTCRKEYINT pThis;
201 rc = rtCrKeyCreateWorker(&pThis, RTCRKEYTYPE_ECDSA_PUBLIC, RTCRKEYINT_F_PUBLIC, pvKeyBits, cbKeyBits);
202 if (RT_SUCCESS(rc))
203 {
204 rc = RTAsn1ObjId_Clone(&pThis->u.EcdsaPublic.NamedCurve, &pParameters->u.ObjId, &g_RTAsn1DefaultAllocator);
205 if (RT_SUCCESS(rc))
206 {
207 /* Done. */
208#if 0
209 RTAsn1VtDelete(&PublicKey.SeqCore.Asn1Core);
210#endif
211 *phKey = pThis;
212 return VINF_SUCCESS;
213 }
214 RTCrKeyRelease(pThis);
215 }
216 }
217 else if (!pParameters || pParameters->enmType == RTASN1TYPE_NOT_PRESENT)
218 rc = RTERRINFO_LOG_SET_F(pErrInfo, VERR_CR_KEY_ALGO_PARAMS_MISSING,
219 "%s: ECDSA public key expected a namedCurve parameter", pszErrorTag);
220 else if (pParameters->enmType == RTASN1TYPE_NULL)
221 rc = RTERRINFO_LOG_SET_F(pErrInfo, VERR_CR_KEY_ALGO_PARAMS_UNKNOWN,
222 "%s: ECDSA public key expected a namedCurve parameter, found implicitCurve (NULL) instead",
223 pszErrorTag);
224 else
225 rc = RTERRINFO_LOG_SET_F(pErrInfo, VERR_CR_KEY_ALGO_PARAMS_UNKNOWN,
226 "%s: ECDSA public key expected namedCurve parameter, found %d",
227 pszErrorTag, pParameters->enmType);
228#if 0
229 RTAsn1VtDelete(&PublicKey.SeqCore.Asn1Core);
230#endif
231 }
232 *phKey = NIL_RTCRKEY;
233 return rc;
234}
235
236
237RTDECL(int) RTCrKeyCreateFromPublicAlgorithmAndBits(PRTCRKEY phKey, PCRTASN1OBJID pAlgorithm, PCRTASN1DYNTYPE pParameters,
238 PCRTASN1BITSTRING pPublicKey, PRTERRINFO pErrInfo, const char *pszErrorTag)
239{
240 /*
241 * Validate input.
242 */
243 AssertPtrReturn(phKey, VERR_INVALID_POINTER);
244 *phKey = NIL_RTCRKEY;
245
246 AssertPtrReturn(pAlgorithm, VERR_INVALID_POINTER);
247 AssertReturn(RTAsn1ObjId_IsPresent(pAlgorithm), VERR_INVALID_PARAMETER);
248
249 AssertPtrReturn(pPublicKey, VERR_INVALID_POINTER);
250 AssertReturn(RTAsn1BitString_IsPresent(pPublicKey), VERR_INVALID_PARAMETER);
251
252 /*
253 * Identify the key type from the algorithm ID
254 */
255 const char * const pszEncryptionOid = RTCrX509AlgorithmIdentifier_GetEncryptionOidFromOid(pAlgorithm->szObjId,
256 false /*fMustIncludeHash*/);
257 if (pszEncryptionOid)
258 {
259 if (strcmp(pszEncryptionOid, RTCRX509ALGORITHMIDENTIFIERID_RSA) == 0)
260 return rtCrKeyCreateRsaPublic(phKey,
261 RTASN1BITSTRING_GET_BIT0_PTR(pPublicKey),
262 RTASN1BITSTRING_GET_BYTE_SIZE(pPublicKey),
263 pErrInfo, pszErrorTag);
264 if (strcmp(pszEncryptionOid, RTCRX509ALGORITHMIDENTIFIERID_ECDSA) == 0)
265 return rtCrKeyCreateEcdsaPublic(phKey,
266 pParameters,
267 RTASN1BITSTRING_GET_BIT0_PTR(pPublicKey),
268 RTASN1BITSTRING_GET_BYTE_SIZE(pPublicKey),
269 pErrInfo, pszErrorTag);
270 }
271 Assert(pszEncryptionOid == NULL);
272 return RTErrInfoSetF(pErrInfo, VERR_CR_PKIX_CIPHER_ALGO_NOT_KNOWN, "oid=%s", pAlgorithm->szObjId);
273}
274
275
276RTDECL(int) RTCrKeyCreateFromSubjectPublicKeyInfo(PRTCRKEY phKey, struct RTCRX509SUBJECTPUBLICKEYINFO const *pSrc,
277 PRTERRINFO pErrInfo, const char *pszErrorTag)
278{
279 AssertPtrReturn(pSrc, VERR_INVALID_POINTER);
280 AssertReturn(RTCrX509SubjectPublicKeyInfo_IsPresent(pSrc), VERR_INVALID_PARAMETER);
281 return RTCrKeyCreateFromPublicAlgorithmAndBits(phKey, &pSrc->Algorithm.Algorithm, &pSrc->Algorithm.Parameters,
282 &pSrc->SubjectPublicKey, pErrInfo, pszErrorTag);
283}
284
285
286/**
287 * Creates an RSA private key from a DER encoded RTCRRSAPRIVATEKEY blob.
288 *
289 * @returns IPRT status code.
290 * @param phKey Where to return the key handle.
291 * @param pvKeyBits The DER encoded RTCRRSAPRIVATEKEY blob.
292 * @param cbKeyBits The size of the blob.
293 * @param pErrInfo Where to supply addition error details. Optional.
294 * @param pszErrorTag Error tag. Optional.
295 */
296DECLHIDDEN(int) rtCrKeyCreateRsaPrivate(PRTCRKEY phKey, const void *pvKeyBits, uint32_t cbKeyBits,
297 PRTERRINFO pErrInfo, const char *pszErrorTag)
298{
299 /*
300 * Decode the key data first since that's what's most likely to fail here.
301 */
302 RTASN1CURSORPRIMARY PrimaryCursor;
303 RTAsn1CursorInitPrimary(&PrimaryCursor, pvKeyBits, cbKeyBits, pErrInfo, &g_RTAsn1SaferAllocator,
304 RTASN1CURSOR_FLAGS_DER, pszErrorTag ? pszErrorTag : "rsa");
305 RTCRRSAPRIVATEKEY PrivateKey;
306 RT_ZERO(PrivateKey);
307 int rc = RTCrRsaPrivateKey_DecodeAsn1(&PrimaryCursor.Cursor, 0, &PrivateKey, pszErrorTag ? pszErrorTag : "PrivateKey");
308 if (RT_SUCCESS(rc))
309 {
310 /*
311 * Create a key instance for it.
312 */
313 PRTCRKEYINT pThis;
314 rc = rtCrKeyCreateWorker(&pThis, RTCRKEYTYPE_RSA_PRIVATE, RTCRKEYINT_F_PRIVATE | RTCRKEYINT_F_SENSITIVE,
315 pvKeyBits, cbKeyBits);
316 if (RT_SUCCESS(rc))
317 {
318 rc = RTAsn1Integer_ToBigNum(&PrivateKey.Modulus, &pThis->u.RsaPrivate.Modulus, 0);
319 if (RT_SUCCESS(rc))
320 {
321 pThis->cBits = RTBigNumBitWidth(&pThis->u.RsaPrivate.Modulus);
322 rc = RTAsn1Integer_ToBigNum(&PrivateKey.PrivateExponent, &pThis->u.RsaPrivate.PrivateExponent, 0);
323 if (RT_SUCCESS(rc))
324 {
325 rc = RTAsn1Integer_ToBigNum(&PrivateKey.PublicExponent, &pThis->u.RsaPrivate.PublicExponent, 0);
326 if (RT_SUCCESS(rc))
327 {
328 /* Done. */
329 RTAsn1VtDelete(&PrivateKey.SeqCore.Asn1Core);
330 RTMemWipeThoroughly(&PrivateKey, sizeof(PrivateKey), 3);
331 *phKey = pThis;
332 return VINF_SUCCESS;
333 }
334 }
335 }
336 RTCrKeyRelease(pThis);
337 }
338 RTAsn1VtDelete(&PrivateKey.SeqCore.Asn1Core);
339 RTMemWipeThoroughly(&PrivateKey, sizeof(PrivateKey), 3);
340 }
341 *phKey = NIL_RTCRKEY;
342 return rc;
343}
344
345
346RTDECL(uint32_t) RTCrKeyRetain(RTCRKEY hKey)
347{
348 PRTCRKEYINT pThis = hKey;
349 AssertPtrReturn(pThis, UINT32_MAX);
350 AssertReturn(pThis->u32Magic == RTCRKEYINT_MAGIC, UINT32_MAX);
351
352 uint32_t cRefs = ASMAtomicIncU32(&pThis->cRefs);
353 AssertMsg(cRefs > 1 && cRefs < 1024, ("%#x\n", cRefs));
354 return cRefs;
355}
356
357
358/**
359 * Destructor.
360 *
361 * @returns 0
362 * @param pThis The key to destroy.
363 */
364static int rtCrKeyDestroy(PRTCRKEYINT pThis)
365{
366 /* Invalidate the object. */
367 pThis->u32Magic = ~RTCRKEYINT_MAGIC;
368
369 /* Type specific cleanup. */
370 switch (pThis->enmType)
371 {
372 case RTCRKEYTYPE_RSA_PUBLIC:
373 RTBigNumDestroy(&pThis->u.RsaPublic.Modulus);
374 RTBigNumDestroy(&pThis->u.RsaPublic.Exponent);
375 break;
376
377 case RTCRKEYTYPE_RSA_PRIVATE:
378 RTBigNumDestroy(&pThis->u.RsaPrivate.Modulus);
379 RTBigNumDestroy(&pThis->u.RsaPrivate.PrivateExponent);
380 RTBigNumDestroy(&pThis->u.RsaPrivate.PublicExponent);
381 break;
382
383 case RTCRKEYTYPE_ECDSA_PUBLIC:
384 RTAsn1ObjId_Delete(&pThis->u.EcdsaPublic.NamedCurve);
385 break;
386
387 case RTCRKEYTYPE_ECDSA_PRIVATE: /* not yet implemented */
388 case RTCRKEYTYPE_INVALID:
389 case RTCRKEYTYPE_END:
390 case RTCRKEYTYPE_32BIT_HACK:
391 AssertFailed();
392 }
393 pThis->enmType = RTCRKEYTYPE_INVALID;
394
395#if defined(IPRT_WITH_OPENSSL)
396 /* Free the encoded form if sensitive (otherwise it follows pThis). */
397 if (pThis->pbEncoded)
398 {
399 if (pThis->fFlags & RTCRKEYINT_F_SENSITIVE)
400 RTMemSaferFree((uint8_t *)pThis->pbEncoded, pThis->cbEncoded);
401 else
402 Assert(pThis->pbEncoded == (uint8_t *)(pThis + 1));
403 pThis->pbEncoded = NULL;
404 }
405#endif
406
407 /* Finally, free the key object itself. */
408 RTMemFree(pThis);
409 return 0;
410}
411
412
413RTDECL(uint32_t) RTCrKeyRelease(RTCRKEY hKey)
414{
415 if (hKey == NIL_RTCRKEY)
416 return 0;
417 PRTCRKEYINT pThis = hKey;
418 AssertPtrReturn(pThis, UINT32_MAX);
419 AssertReturn(pThis->u32Magic == RTCRKEYINT_MAGIC, UINT32_MAX);
420
421 uint32_t cRefs = ASMAtomicDecU32(&pThis->cRefs);
422 AssertMsg(cRefs < 1024, ("%#x\n", cRefs));
423 if (cRefs != 0)
424 return cRefs;
425 return rtCrKeyDestroy(pThis);
426}
427
428
429RTDECL(RTCRKEYTYPE) RTCrKeyGetType(RTCRKEY hKey)
430{
431 PRTCRKEYINT pThis = hKey;
432 AssertPtrReturn(pThis, RTCRKEYTYPE_INVALID);
433 AssertReturn(pThis->u32Magic == RTCRKEYINT_MAGIC, RTCRKEYTYPE_INVALID);
434 return pThis->enmType;
435}
436
437
438RTDECL(bool) RTCrKeyHasPrivatePart(RTCRKEY hKey)
439{
440 PRTCRKEYINT pThis = hKey;
441 AssertPtrReturn(pThis, false);
442 AssertReturn(pThis->u32Magic == RTCRKEYINT_MAGIC, false);
443 return RT_BOOL(pThis->fFlags & RTCRKEYINT_F_PRIVATE);
444}
445
446
447RTDECL(bool) RTCrKeyHasPublicPart(RTCRKEY hKey)
448{
449 PRTCRKEYINT pThis = hKey;
450 AssertPtrReturn(pThis, false);
451 AssertReturn(pThis->u32Magic == RTCRKEYINT_MAGIC, false);
452 return RT_BOOL(pThis->fFlags & RTCRKEYINT_F_PUBLIC);
453}
454
455
456RTDECL(uint32_t) RTCrKeyGetBitCount(RTCRKEY hKey)
457{
458 PRTCRKEYINT pThis = hKey;
459 AssertPtrReturn(pThis, 0);
460 AssertReturn(pThis->u32Magic == RTCRKEYINT_MAGIC, 0);
461 return pThis->cBits;
462}
463
464
465RTDECL(int) RTCrKeyQueryRsaModulus(RTCRKEY hKey, PRTBIGNUM pModulus)
466{
467 PRTCRKEYINT pThis = hKey;
468 AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
469 AssertReturn(pThis->u32Magic == RTCRKEYINT_MAGIC, VERR_INVALID_HANDLE);
470 AssertReturn(pThis->enmType == RTCRKEYTYPE_RSA_PRIVATE || pThis->enmType == RTCRKEYTYPE_RSA_PUBLIC, VERR_WRONG_TYPE);
471 AssertPtrReturn(pModulus, VERR_INVALID_POINTER);
472
473 if (pThis->enmType == RTCRKEYTYPE_RSA_PRIVATE)
474 return RTBigNumAssign(pModulus, &pThis->u.RsaPrivate.Modulus);
475 return RTBigNumAssign(pModulus, &pThis->u.RsaPublic.Modulus);
476}
477
478
479RTDECL(int) RTCrKeyQueryRsaPrivateExponent(RTCRKEY hKey, PRTBIGNUM pPrivateExponent)
480{
481 PRTCRKEYINT pThis = hKey;
482 AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
483 AssertReturn(pThis->u32Magic == RTCRKEYINT_MAGIC, VERR_INVALID_HANDLE);
484 AssertReturn(pThis->enmType == RTCRKEYTYPE_RSA_PRIVATE, VERR_WRONG_TYPE);
485 AssertPtrReturn(pPrivateExponent, VERR_INVALID_POINTER);
486
487 return RTBigNumAssign(pPrivateExponent, &pThis->u.RsaPrivate.PrivateExponent);
488}
489
490
491RTDECL(int) RTCrKeyVerifyParameterCompatibility(RTCRKEY hKey, PCRTASN1DYNTYPE pParameters, bool fForSignature,
492 PCRTASN1OBJID pAlgorithm, PRTERRINFO pErrInfo)
493{
494 PRTCRKEYINT pThis = hKey;
495 AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
496 AssertReturn(pThis->u32Magic == RTCRKEYINT_MAGIC, VERR_INVALID_HANDLE);
497 RT_NOREF(pAlgorithm);
498
499 switch (pThis->enmType)
500 {
501 /*
502 * No parameters. Ignore NULL.
503 */
504 case RTCRKEYTYPE_RSA_PRIVATE:
505 case RTCRKEYTYPE_RSA_PUBLIC:
506 if ( !pParameters
507 || pParameters->enmType == RTASN1TYPE_NOT_PRESENT
508 || pParameters->enmType == RTASN1TYPE_NULL)
509 return VINF_SUCCESS;
510 return RTERRINFO_LOG_SET_F(pErrInfo, VERR_CR_KEY_ALGO_PARAMS_UNEXPECTED,
511 "RSA keys does not generally take parameters (enmType=%d)", pParameters->enmType);
512
513 /*
514 * ECDSA requires a parameter. Currently only the named curve choice is supported.
515 * RFC-3279 section 2.2.3 states that for ecdsa-with-SHA1 the parameter MUST be
516 * omitted. ASSUMING the same applies to the other ecdsa-with-xxxx variants.
517 */
518 case RTCRKEYTYPE_ECDSA_PUBLIC:
519 if (!fForSignature)
520 {
521 /* Key rules: Parameters required. */
522 if (pParameters)
523 {
524 if (pParameters->enmType == RTASN1TYPE_OBJID)
525 {
526 if (RTAsn1ObjId_Compare(&pParameters->u.ObjId, &pThis->u.EcdsaPublic.NamedCurve) == 0)
527 return VINF_SUCCESS;
528 return RTERRINFO_LOG_SET_F(pErrInfo, VERR_CR_KEY_ALGO_PARAMS_MISMATCH,
529 "ECDSA NamedCurve difference: %s, key uses %s",
530 pParameters->u.ObjId.szObjId, pThis->u.EcdsaPublic.NamedCurve.szObjId);
531 }
532 /* We don't implement the other variants. */
533 return RTERRINFO_LOG_SET_F(pErrInfo, VERR_CR_KEY_ALGO_PARAMS_UNKNOWN,
534 "Unexpected ECDSA parameter: enmType=%d", pParameters->enmType);
535 }
536 return RTERRINFO_LOG_SET(pErrInfo, VERR_CR_KEY_ALGO_PARAMS_MISSING, "ECDSA keys requires parameter(s)");
537 }
538
539 /* Hash+ecdsa parameter rules: No parameters */
540 if ( !pParameters
541 || pParameters->enmType == RTASN1TYPE_NOT_PRESENT
542 || pParameters->enmType == RTASN1TYPE_NULL)
543 return VINF_SUCCESS;
544 return RTERRINFO_LOG_SET_F(pErrInfo, VERR_CR_KEY_ALGO_PARAMS_UNEXPECTED,
545 "ECDSA signature should have no parameters (enmType=%d)", pParameters->enmType);
546
547 case RTCRKEYTYPE_ECDSA_PRIVATE:
548 AssertFailedReturn(VERR_NOT_IMPLEMENTED);
549
550 case RTCRKEYTYPE_INVALID:
551 case RTCRKEYTYPE_END:
552 case RTCRKEYTYPE_32BIT_HACK:
553 break;
554 }
555 AssertFailedReturn(VERR_INTERNAL_ERROR_5);
556}
557
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