1 /*
2 * Copyright (C) 2013 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "config.h"
32 #include "public/platform/WebCryptoAlgorithm.h"
33
34 #include "public/platform/WebCryptoAlgorithmParams.h"
35 #include "wtf/Assertions.h"
36 #include "wtf/OwnPtr.h"
37 #include "wtf/StdLibExtras.h"
38 #include "wtf/ThreadSafeRefCounted.h"
39
40 namespace blink {
41
42 namespace {
43
44 // A mapping from the algorithm ID to information about the algorithm.
45 const WebCryptoAlgorithmInfo algorithmIdToInfo[] = {
46 { // Index 0
47 "AES-CBC", {
48 WebCryptoAlgorithmParamsTypeAesCbcParams, // Encrypt
49 WebCryptoAlgorithmParamsTypeAesCbcParams, // Decrypt
50 WebCryptoAlgorithmInfo::Undefined, // Sign
51 WebCryptoAlgorithmInfo::Undefined, // Verify
52 WebCryptoAlgorithmInfo::Undefined, // Digest
53 WebCryptoAlgorithmParamsTypeAesKeyGenParams, // GenerateKey
54 WebCryptoAlgorithmParamsTypeNone, // ImportKey
55 WebCryptoAlgorithmInfo::Undefined, // DeriveKey
56 WebCryptoAlgorithmInfo::Undefined, // DeriveBits
57 WebCryptoAlgorithmParamsTypeAesCbcParams, // WrapKey
58 WebCryptoAlgorithmParamsTypeAesCbcParams // UnwrapKey
59 }
60 }, { // Index 1
61 "HMAC", {
62 WebCryptoAlgorithmInfo::Undefined, // Encrypt
63 WebCryptoAlgorithmInfo::Undefined, // Decrypt
64 WebCryptoAlgorithmParamsTypeNone, // Sign
65 WebCryptoAlgorithmParamsTypeNone, // Verify
66 WebCryptoAlgorithmInfo::Undefined, // Digest
67 WebCryptoAlgorithmParamsTypeHmacKeyGenParams, // GenerateKey
68 WebCryptoAlgorithmParamsTypeHmacImportParams, // ImportKey
69 WebCryptoAlgorithmInfo::Undefined, // DeriveKey
70 WebCryptoAlgorithmInfo::Undefined, // DeriveBits
71 WebCryptoAlgorithmInfo::Undefined, // WrapKey
72 WebCryptoAlgorithmInfo::Undefined // UnwrapKey
73 }
74 }, { // Index 2
75 "RSASSA-PKCS1-v1_5", {
76 WebCryptoAlgorithmInfo::Undefined, // Encrypt
77 WebCryptoAlgorithmInfo::Undefined, // Decrypt
78 WebCryptoAlgorithmParamsTypeNone, // Sign
79 WebCryptoAlgorithmParamsTypeNone, // Verify
80 WebCryptoAlgorithmInfo::Undefined, // Digest
81 WebCryptoAlgorithmParamsTypeRsaHashedKeyGenParams, // GenerateKey
82 WebCryptoAlgorithmParamsTypeRsaHashedImportParams, // ImportKey
83 WebCryptoAlgorithmInfo::Undefined, // DeriveKey
84 WebCryptoAlgorithmInfo::Undefined, // DeriveBits
85 WebCryptoAlgorithmInfo::Undefined, // WrapKey
86 WebCryptoAlgorithmInfo::Undefined // UnwrapKey
87 }
88 }, { // Index 3
89 "SHA-1", {
90 WebCryptoAlgorithmInfo::Undefined, // Encrypt
91 WebCryptoAlgorithmInfo::Undefined, // Decrypt
92 WebCryptoAlgorithmInfo::Undefined, // Sign
93 WebCryptoAlgorithmInfo::Undefined, // Verify
94 WebCryptoAlgorithmParamsTypeNone, // Digest
95 WebCryptoAlgorithmInfo::Undefined, // GenerateKey
96 WebCryptoAlgorithmInfo::Undefined, // ImportKey
97 WebCryptoAlgorithmInfo::Undefined, // DeriveKey
98 WebCryptoAlgorithmInfo::Undefined, // DeriveBits
99 WebCryptoAlgorithmInfo::Undefined, // WrapKey
100 WebCryptoAlgorithmInfo::Undefined // UnwrapKey
101 }
102 }, { // Index 4
103 "SHA-256", {
104 WebCryptoAlgorithmInfo::Undefined, // Encrypt
105 WebCryptoAlgorithmInfo::Undefined, // Decrypt
106 WebCryptoAlgorithmInfo::Undefined, // Sign
107 WebCryptoAlgorithmInfo::Undefined, // Verify
108 WebCryptoAlgorithmParamsTypeNone, // Digest
109 WebCryptoAlgorithmInfo::Undefined, // GenerateKey
110 WebCryptoAlgorithmInfo::Undefined, // ImportKey
111 WebCryptoAlgorithmInfo::Undefined, // DeriveKey
112 WebCryptoAlgorithmInfo::Undefined, // DeriveBits
113 WebCryptoAlgorithmInfo::Undefined, // WrapKey
114 WebCryptoAlgorithmInfo::Undefined // UnwrapKey
115 }
116 }, { // Index 5
117 "SHA-384", {
118 WebCryptoAlgorithmInfo::Undefined, // Encrypt
119 WebCryptoAlgorithmInfo::Undefined, // Decrypt
120 WebCryptoAlgorithmInfo::Undefined, // Sign
121 WebCryptoAlgorithmInfo::Undefined, // Verify
122 WebCryptoAlgorithmParamsTypeNone, // Digest
123 WebCryptoAlgorithmInfo::Undefined, // GenerateKey
124 WebCryptoAlgorithmInfo::Undefined, // ImportKey
125 WebCryptoAlgorithmInfo::Undefined, // DeriveKey
126 WebCryptoAlgorithmInfo::Undefined, // DeriveBits
127 WebCryptoAlgorithmInfo::Undefined, // WrapKey
128 WebCryptoAlgorithmInfo::Undefined // UnwrapKey
129 }
130 }, { // Index 6
131 "SHA-512", {
132 WebCryptoAlgorithmInfo::Undefined, // Encrypt
133 WebCryptoAlgorithmInfo::Undefined, // Decrypt
134 WebCryptoAlgorithmInfo::Undefined, // Sign
135 WebCryptoAlgorithmInfo::Undefined, // Verify
136 WebCryptoAlgorithmParamsTypeNone, // Digest
137 WebCryptoAlgorithmInfo::Undefined, // GenerateKey
138 WebCryptoAlgorithmInfo::Undefined, // ImportKey
139 WebCryptoAlgorithmInfo::Undefined, // DeriveKey
140 WebCryptoAlgorithmInfo::Undefined, // DeriveBits
141 WebCryptoAlgorithmInfo::Undefined, // WrapKey
142 WebCryptoAlgorithmInfo::Undefined // UnwrapKey
143 }
144 }, { // Index 7
145 "AES-GCM", {
146 WebCryptoAlgorithmParamsTypeAesGcmParams, // Encrypt
147 WebCryptoAlgorithmParamsTypeAesGcmParams, // Decrypt
148 WebCryptoAlgorithmInfo::Undefined, // Sign
149 WebCryptoAlgorithmInfo::Undefined, // Verify
150 WebCryptoAlgorithmInfo::Undefined, // Digest
151 WebCryptoAlgorithmParamsTypeAesKeyGenParams, // GenerateKey
152 WebCryptoAlgorithmParamsTypeNone, // ImportKey
153 WebCryptoAlgorithmInfo::Undefined, // DeriveKey
154 WebCryptoAlgorithmInfo::Undefined, // DeriveBits
155 WebCryptoAlgorithmParamsTypeAesGcmParams, // WrapKey
156 WebCryptoAlgorithmParamsTypeAesGcmParams // UnwrapKey
157 }
158 }, { // Index 8
159 "RSA-OAEP", {
160 WebCryptoAlgorithmParamsTypeRsaOaepParams, // Encrypt
161 WebCryptoAlgorithmParamsTypeRsaOaepParams, // Decrypt
162 WebCryptoAlgorithmInfo::Undefined, // Sign
163 WebCryptoAlgorithmInfo::Undefined, // Verify
164 WebCryptoAlgorithmInfo::Undefined, // Digest
165 WebCryptoAlgorithmParamsTypeRsaHashedKeyGenParams, // GenerateKey
166 WebCryptoAlgorithmParamsTypeRsaHashedImportParams, // ImportKey
167 WebCryptoAlgorithmInfo::Undefined, // DeriveKey
168 WebCryptoAlgorithmInfo::Undefined, // DeriveBits
169 WebCryptoAlgorithmParamsTypeRsaOaepParams, // WrapKey
170 WebCryptoAlgorithmParamsTypeRsaOaepParams // UnwrapKey
171 }
172 }, { // Index 9
173 "AES-CTR", {
174 WebCryptoAlgorithmParamsTypeAesCtrParams, // Encrypt
175 WebCryptoAlgorithmParamsTypeAesCtrParams, // Decrypt
176 WebCryptoAlgorithmInfo::Undefined, // Sign
177 WebCryptoAlgorithmInfo::Undefined, // Verify
178 WebCryptoAlgorithmInfo::Undefined, // Digest
179 WebCryptoAlgorithmParamsTypeAesKeyGenParams, // GenerateKey
180 WebCryptoAlgorithmParamsTypeNone, // ImportKey
181 WebCryptoAlgorithmInfo::Undefined, // DeriveKey
182 WebCryptoAlgorithmInfo::Undefined, // DeriveBits
183 WebCryptoAlgorithmParamsTypeAesCtrParams, // WrapKey
184 WebCryptoAlgorithmParamsTypeAesCtrParams // UnwrapKey
185 }
186 }, { // Index 10
187 "AES-KW", {
188 WebCryptoAlgorithmInfo::Undefined, // Encrypt
189 WebCryptoAlgorithmInfo::Undefined, // Decrypt
190 WebCryptoAlgorithmInfo::Undefined, // Sign
191 WebCryptoAlgorithmInfo::Undefined, // Verify
192 WebCryptoAlgorithmInfo::Undefined, // Digest
193 WebCryptoAlgorithmParamsTypeAesKeyGenParams, // GenerateKey
194 WebCryptoAlgorithmParamsTypeNone, // ImportKey
195 WebCryptoAlgorithmInfo::Undefined, // DeriveKey
196 WebCryptoAlgorithmInfo::Undefined, // DeriveBits
197 WebCryptoAlgorithmParamsTypeNone, // WrapKey
198 WebCryptoAlgorithmParamsTypeNone // UnwrapKey
199 }
200 },
201 };
202
203 // Initializing the algorithmIdToInfo table above depends on knowing the enum
204 // values for algorithm IDs. If those ever change, the table will need to be
205 // updated.
206 COMPILE_ASSERT(WebCryptoAlgorithmIdAesCbc == 0, AesCbc_idDoesntMatch);
207 COMPILE_ASSERT(WebCryptoAlgorithmIdHmac == 1, Hmac_idDoesntMatch);
208 COMPILE_ASSERT(WebCryptoAlgorithmIdRsaSsaPkcs1v1_5 == 2, RsaSsaPkcs1v1_5_idDoesntMatch);
209 COMPILE_ASSERT(WebCryptoAlgorithmIdSha1 == 3, Sha1_idDoesntMatch);
210 COMPILE_ASSERT(WebCryptoAlgorithmIdSha256 == 4, Sha256_idDoesntMatch);
211 COMPILE_ASSERT(WebCryptoAlgorithmIdSha384 == 5, Sha384_idDoesntMatch);
212 COMPILE_ASSERT(WebCryptoAlgorithmIdSha512 == 6, Sha512_idDoesntMatch);
213 COMPILE_ASSERT(WebCryptoAlgorithmIdAesGcm == 7, AesGcm_idDoesntMatch);
214 COMPILE_ASSERT(WebCryptoAlgorithmIdRsaOaep == 8, RsaOaep_idDoesntMatch);
215 COMPILE_ASSERT(WebCryptoAlgorithmIdAesCtr == 9, AesCtr_idDoesntMatch);
216 COMPILE_ASSERT(WebCryptoAlgorithmIdAesKw == 10, AesKw_idDoesntMatch);
217 COMPILE_ASSERT(WebCryptoAlgorithmIdLast == 10, Last_idDoesntMatch);
218 COMPILE_ASSERT(10 == WebCryptoOperationLast, UpdateParamsMapping);
219
220 } // namespace
221
222 class WebCryptoAlgorithmPrivate : public ThreadSafeRefCounted<WebCryptoAlgorithmPrivate> {
223 public:
WebCryptoAlgorithmPrivate(WebCryptoAlgorithmId id,PassOwnPtr<WebCryptoAlgorithmParams> params)224 WebCryptoAlgorithmPrivate(WebCryptoAlgorithmId id, PassOwnPtr<WebCryptoAlgorithmParams> params)
225 : id(id)
226 , params(params)
227 {
228 }
229
230 WebCryptoAlgorithmId id;
231 OwnPtr<WebCryptoAlgorithmParams> params;
232 };
233
WebCryptoAlgorithm(WebCryptoAlgorithmId id,PassOwnPtr<WebCryptoAlgorithmParams> params)234 WebCryptoAlgorithm::WebCryptoAlgorithm(WebCryptoAlgorithmId id, PassOwnPtr<WebCryptoAlgorithmParams> params)
235 : m_private(adoptRef(new WebCryptoAlgorithmPrivate(id, params)))
236 {
237 }
238
createNull()239 WebCryptoAlgorithm WebCryptoAlgorithm::createNull()
240 {
241 return WebCryptoAlgorithm();
242 }
243
adoptParamsAndCreate(WebCryptoAlgorithmId id,WebCryptoAlgorithmParams * params)244 WebCryptoAlgorithm WebCryptoAlgorithm::adoptParamsAndCreate(WebCryptoAlgorithmId id, WebCryptoAlgorithmParams* params)
245 {
246 return WebCryptoAlgorithm(id, adoptPtr(params));
247 }
248
lookupAlgorithmInfo(WebCryptoAlgorithmId id)249 const WebCryptoAlgorithmInfo* WebCryptoAlgorithm::lookupAlgorithmInfo(WebCryptoAlgorithmId id)
250 {
251 if (id < 0 || id >= WTF_ARRAY_LENGTH(algorithmIdToInfo))
252 return 0;
253 return &algorithmIdToInfo[id];
254 }
255
isNull() const256 bool WebCryptoAlgorithm::isNull() const
257 {
258 return m_private.isNull();
259 }
260
id() const261 WebCryptoAlgorithmId WebCryptoAlgorithm::id() const
262 {
263 ASSERT(!isNull());
264 return m_private->id;
265 }
266
paramsType() const267 WebCryptoAlgorithmParamsType WebCryptoAlgorithm::paramsType() const
268 {
269 ASSERT(!isNull());
270 if (!m_private->params)
271 return WebCryptoAlgorithmParamsTypeNone;
272 return m_private->params->type();
273 }
274
aesCbcParams() const275 const WebCryptoAesCbcParams* WebCryptoAlgorithm::aesCbcParams() const
276 {
277 ASSERT(!isNull());
278 if (paramsType() == WebCryptoAlgorithmParamsTypeAesCbcParams)
279 return static_cast<WebCryptoAesCbcParams*>(m_private->params.get());
280 return 0;
281 }
282
aesCtrParams() const283 const WebCryptoAesCtrParams* WebCryptoAlgorithm::aesCtrParams() const
284 {
285 ASSERT(!isNull());
286 if (paramsType() == WebCryptoAlgorithmParamsTypeAesCtrParams)
287 return static_cast<WebCryptoAesCtrParams*>(m_private->params.get());
288 return 0;
289 }
290
aesKeyGenParams() const291 const WebCryptoAesKeyGenParams* WebCryptoAlgorithm::aesKeyGenParams() const
292 {
293 ASSERT(!isNull());
294 if (paramsType() == WebCryptoAlgorithmParamsTypeAesKeyGenParams)
295 return static_cast<WebCryptoAesKeyGenParams*>(m_private->params.get());
296 return 0;
297 }
298
hmacImportParams() const299 const WebCryptoHmacImportParams* WebCryptoAlgorithm::hmacImportParams() const
300 {
301 ASSERT(!isNull());
302 if (paramsType() == WebCryptoAlgorithmParamsTypeHmacImportParams)
303 return static_cast<WebCryptoHmacImportParams*>(m_private->params.get());
304 return 0;
305 }
306
hmacKeyGenParams() const307 const WebCryptoHmacKeyGenParams* WebCryptoAlgorithm::hmacKeyGenParams() const
308 {
309 ASSERT(!isNull());
310 if (paramsType() == WebCryptoAlgorithmParamsTypeHmacKeyGenParams)
311 return static_cast<WebCryptoHmacKeyGenParams*>(m_private->params.get());
312 return 0;
313 }
314
aesGcmParams() const315 const WebCryptoAesGcmParams* WebCryptoAlgorithm::aesGcmParams() const
316 {
317 ASSERT(!isNull());
318 if (paramsType() == WebCryptoAlgorithmParamsTypeAesGcmParams)
319 return static_cast<WebCryptoAesGcmParams*>(m_private->params.get());
320 return 0;
321 }
322
rsaOaepParams() const323 const WebCryptoRsaOaepParams* WebCryptoAlgorithm::rsaOaepParams() const
324 {
325 ASSERT(!isNull());
326 if (paramsType() == WebCryptoAlgorithmParamsTypeRsaOaepParams)
327 return static_cast<WebCryptoRsaOaepParams*>(m_private->params.get());
328 return 0;
329 }
330
rsaHashedImportParams() const331 const WebCryptoRsaHashedImportParams* WebCryptoAlgorithm::rsaHashedImportParams() const
332 {
333 ASSERT(!isNull());
334 if (paramsType() == WebCryptoAlgorithmParamsTypeRsaHashedImportParams)
335 return static_cast<WebCryptoRsaHashedImportParams*>(m_private->params.get());
336 return 0;
337 }
338
rsaHashedKeyGenParams() const339 const WebCryptoRsaHashedKeyGenParams* WebCryptoAlgorithm::rsaHashedKeyGenParams() const
340 {
341 ASSERT(!isNull());
342 if (paramsType() == WebCryptoAlgorithmParamsTypeRsaHashedKeyGenParams)
343 return static_cast<WebCryptoRsaHashedKeyGenParams*>(m_private->params.get());
344 return 0;
345 }
346
isHash(WebCryptoAlgorithmId id)347 bool WebCryptoAlgorithm::isHash(WebCryptoAlgorithmId id)
348 {
349 switch (id) {
350 case WebCryptoAlgorithmIdSha1:
351 case WebCryptoAlgorithmIdSha256:
352 case WebCryptoAlgorithmIdSha384:
353 case WebCryptoAlgorithmIdSha512:
354 return true;
355 case WebCryptoAlgorithmIdAesCbc:
356 case WebCryptoAlgorithmIdHmac:
357 case WebCryptoAlgorithmIdRsaSsaPkcs1v1_5:
358 case WebCryptoAlgorithmIdAesGcm:
359 case WebCryptoAlgorithmIdRsaOaep:
360 case WebCryptoAlgorithmIdAesCtr:
361 case WebCryptoAlgorithmIdAesKw:
362 break;
363 }
364 return false;
365 }
366
assign(const WebCryptoAlgorithm & other)367 void WebCryptoAlgorithm::assign(const WebCryptoAlgorithm& other)
368 {
369 m_private = other.m_private;
370 }
371
reset()372 void WebCryptoAlgorithm::reset()
373 {
374 m_private.reset();
375 }
376
377 } // namespace blink
378