| ︙ | | |
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
-
-
+
+
|
int flags; /* Chan config flags */
int watchMask; /* Current WatchProc mask */
int mode; /* Current mode of parent channel */
int format; /* Digest format and operation */
Tcl_Interp *interp; /* Current interpreter */
EVP_MD_CTX *ctx; /* MD Context */
HMAC_CTX *hctx; /* HMAC Context */
CMAC_CTX *cctx; /* CMAC Context */
HMAC_CTX *hctx; /* HMAC context */
CMAC_CTX *cctx; /* CMAC context */
Tcl_Command token; /* Command token */
} DigestState;
/*
*-------------------------------------------------------------------
*
* DigestStateNew --
|
| ︙ | | |
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
|
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
|
-
-
+
+
+
+
-
+
+
-
+
+
+
-
-
+
+
+
+
-
+
+
-
+
+
+
|
*-------------------------------------------------------------------
*/
int DigestInitialize(Tcl_Interp *interp, DigestState *statePtr, const EVP_MD *md,
const EVP_CIPHER *cipher, Tcl_Obj *keyObj, EVP_MAC *mac) {
int key_len = 0, res = 0;
const unsigned char *key = NULL;
/* Create message digest context */
if (statePtr->format & TYPE_MD) {
/* Create contexts */
switch(statePtr->format & 0xFF0) {
case TYPE_MD:
statePtr->ctx = EVP_MD_CTX_new();
res = (statePtr->ctx != NULL);
break;
} else if (statePtr->format & TYPE_HMAC) {
case TYPE_HMAC:
statePtr->hctx = HMAC_CTX_new();
res = (statePtr->hctx != NULL);
break;
} else if (statePtr->format & TYPE_CMAC) {
case TYPE_CMAC:
statePtr->cctx = CMAC_CTX_new();
res = (statePtr->cctx != NULL);
break;
}
if (!res) {
Tcl_AppendResult(interp, "Create context failed: ", REASON(), NULL);
return TCL_ERROR;
}
/* Get key */
if (keyObj != NULL) {
key = Tcl_GetByteArrayFromObj(keyObj, &key_len);
}
/* Initialize hash function */
if (statePtr->format & TYPE_MD) {
/* Initialize cryptography function */
switch(statePtr->format & 0xFF0) {
case TYPE_MD:
res = EVP_DigestInit_ex(statePtr->ctx, md, NULL);
break;
} else if (statePtr->format & TYPE_HMAC) {
case TYPE_HMAC:
res = HMAC_Init_ex(statePtr->hctx, (const void *) key, key_len, md, NULL);
break;
} else if (statePtr->format & TYPE_CMAC) {
case TYPE_CMAC:
res = CMAC_Init(statePtr->cctx, (const void *) key, key_len, cipher, NULL);
break;
}
if (!res) {
Tcl_AppendResult(interp, "Initialize failed: ", REASON(), NULL);
return TCL_ERROR;
}
return TCL_OK;
}
|
| ︙ | | |
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
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
|
-
-
-
-
-
-
+
+
+
+
+
+
+
+
+
+
+
|
* Adds buf data to hash function or sets result to error message
*
*-------------------------------------------------------------------
*/
int DigestUpdate(DigestState *statePtr, char *buf, size_t read, int do_result) {
int res = 0;
if (statePtr->format & TYPE_MD) {
res = EVP_DigestUpdate(statePtr->ctx, buf, read);
} else if (statePtr->format & TYPE_HMAC) {
res = HMAC_Update(statePtr->hctx, buf, read);
} else if (statePtr->format & TYPE_CMAC) {
res = CMAC_Update(statePtr->cctx, buf, read);
switch(statePtr->format & 0xFF0) {
case TYPE_MD:
res = EVP_DigestUpdate(statePtr->ctx, buf, read);
break;
case TYPE_HMAC:
res = HMAC_Update(statePtr->hctx, buf, read);
break;
case TYPE_CMAC:
res = CMAC_Update(statePtr->cctx, buf, read);
break;
}
if (!res && do_result) {
Tcl_AppendResult(statePtr->interp, "Update failed: ", REASON(), NULL);
return TCL_ERROR;
}
return res;
}
|
| ︙ | | |
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
|
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
|
-
-
+
+
-
-
+
+
+
-
+
+
-
+
+
-
-
-
-
-
-
-
-
+
+
+
+
+
+
+
+
+
+
|
* Side effects:
* Sets result to message digest or an error message.
*
*-------------------------------------------------------------------
*/
int DigestFinalize(Tcl_Interp *interp, DigestState *statePtr, Tcl_Obj **resultObj) {
unsigned char md_buf[EVP_MAX_MD_SIZE];
unsigned int md_len;
int res = 0;
unsigned int ulen;
int res = 0, md_len = 0;
/* Finalize hash function and calculate message digest */
if (statePtr->format & TYPE_MD) {
/* Finalize cryptography function and get result */
switch(statePtr->format & 0xFF0) {
case TYPE_MD:
if (!(statePtr->format & IS_XOF)) {
res = EVP_DigestFinal_ex(statePtr->ctx, md_buf, &md_len);
res = EVP_DigestFinal_ex(statePtr->ctx, md_buf, &ulen);
md_len = (int) ulen;
} else {
res = EVP_DigestFinalXOF(statePtr->ctx, md_buf, EVP_MAX_MD_SIZE);
res = EVP_DigestFinalXOF(statePtr->ctx, md_buf, (size_t) EVP_MAX_MD_SIZE);
md_len = EVP_MAX_MD_SIZE;
}
} else if (statePtr->format & TYPE_HMAC) {
res = HMAC_Final(statePtr->hctx, md_buf, &md_len);
} else if (statePtr->format & TYPE_CMAC) {
size_t len;
res = CMAC_Final(statePtr->cctx, md_buf, &len);
md_len = (unsigned int) len;
break;
case TYPE_HMAC:
res = HMAC_Final(statePtr->hctx, md_buf, &ulen);
md_len = (int) ulen;
break;
case TYPE_CMAC:
size_t size;
res = CMAC_Final(statePtr->cctx, md_buf, &size);
md_len = (int) size;
break;
}
if (!res) {
if (resultObj == NULL) {
Tcl_AppendResult(interp, "Finalize failed: ", REASON(), NULL);
}
return TCL_ERROR;
|
| ︙ | | |
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
|
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
|
-
+
|
Tcl_IncrRefCount(*resultObj);
}
} else {
Tcl_Obj *newObj = Tcl_NewObj();
unsigned char *ptr = Tcl_SetByteArrayLength(newObj, md_len*2);
for (unsigned int i = 0; i < md_len; i++) {
for (int i = 0; i < md_len; i++) {
*ptr++ = hex[(md_buf[i] >> 4) & 0x0F];
*ptr++ = hex[md_buf[i] & 0x0F];
}
if (resultObj == NULL) {
Tcl_SetObjResult(interp, newObj);
} else {
|
| ︙ | | |