Repository navigation
Expand file tree
/
Copy pathblake2b_impl.c
More file actions
440 lines (366 loc) · 12.8 KB
/
Copy pathblake2b_impl.c
File metadata and controls
440 lines (366 loc) · 12.8 KB
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
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
/*
* Written in 2013 by Dmitry Chestnykh <[email protected]>
* Modified for CPython by Christian Heimes <[email protected]>
*
* To the extent possible under law, the author have dedicated all
* copyright and related and neighboring rights to this software to
* the public domain worldwide. This software is distributed without
* any warranty. http://creativecommons.org/publicdomain/zero/1.0/
*/
/* WARNING: autogenerated file!
*
* The blake2s_impl.c is autogenerated from blake2b_impl.c.
*/
#include "Python.h"
#include "pystrhex.h"
#include "pythread.h"
#include "../hashlib.h"
#include "blake2ns.h"
#define HAVE_BLAKE2B 1
#define BLAKE2_LOCAL_INLINE(type) Py_LOCAL_INLINE(type)
#include "impl/blake2.h"
#include "impl/blake2-impl.h" /* for secure_zero_memory() and store48() */
/* pure SSE2 implementation is very slow, so only use the more optimized SSSE3+
* https://bugs.python.org/issue31834 */
#if defined(__SSSE3__) || defined(__SSE4_1__) || defined(__AVX__) || defined(__XOP__)
#include "impl/blake2b.c"
#else
#include "impl/blake2b-ref.c"
#endif
extern PyTypeObject PyBlake2_BLAKE2bType;
typedef struct {
PyObject_HEAD
blake2b_param param;
blake2b_state state;
PyThread_type_lock lock;
} BLAKE2bObject;
#include "clinic/blake2b_impl.c.h"
/*[clinic input]
module _blake2
class _blake2.blake2b "BLAKE2bObject *" "&PyBlake2_BLAKE2bType"
[clinic start generated code]*/
/*[clinic end generated code: output=da39a3ee5e6b4b0d input=d47b0527b39c673f]*/
static BLAKE2bObject *
new_BLAKE2bObject(PyTypeObject *type)
{
BLAKE2bObject *self;
self = (BLAKE2bObject *)type->tp_alloc(type, 0);
if (self != NULL) {
self->lock = NULL;
}
return self;
}
/*[clinic input]
@classmethod
_blake2.blake2b.__new__ as py_blake2b_new
data: object(c_default="NULL") = b''
/
*
digest_size: int(c_default="BLAKE2B_OUTBYTES") = _blake2.blake2b.MAX_DIGEST_SIZE
key: Py_buffer(c_default="NULL", py_default="b''") = None
salt: Py_buffer(c_default="NULL", py_default="b''") = None
person: Py_buffer(c_default="NULL", py_default="b''") = None
fanout: int = 1
depth: int = 1
leaf_size: unsigned_long = 0
node_offset: unsigned_long_long = 0
node_depth: int = 0
inner_size: int = 0
last_node: bool = False
Return a new BLAKE2b hash object.
[clinic start generated code]*/
static PyObject *
py_blake2b_new_impl(PyTypeObject *type, PyObject *data, int digest_size,
Py_buffer *key, Py_buffer *salt, Py_buffer *person,
int fanout, int depth, unsigned long leaf_size,
unsigned long long node_offset, int node_depth,
int inner_size, int last_node)
/*[clinic end generated code: output=65e732c66c2297a0 input=82be35a4e6a9daa2]*/
{
BLAKE2bObject *self = NULL;
Py_buffer buf;
self = new_BLAKE2bObject(type);
if (self == NULL) {
goto error;
}
/* Zero parameter block. */
memset(&self->param, 0, sizeof(self->param));
/* Set digest size. */
if (digest_size <= 0 || digest_size > BLAKE2B_OUTBYTES) {
PyErr_Format(PyExc_ValueError,
"digest_size must be between 1 and %d bytes",
BLAKE2B_OUTBYTES);
goto error;
}
self->param.digest_length = digest_size;
/* Set salt parameter. */
if ((salt->obj != NULL) && salt->len) {
if (salt->len > BLAKE2B_SALTBYTES) {
PyErr_Format(PyExc_ValueError,
"maximum salt length is %d bytes",
BLAKE2B_SALTBYTES);
goto error;
}
memcpy(self->param.salt, salt->buf, salt->len);
}
/* Set personalization parameter. */
if ((person->obj != NULL) && person->len) {
if (person->len > BLAKE2B_PERSONALBYTES) {
PyErr_Format(PyExc_ValueError,
"maximum person length is %d bytes",
BLAKE2B_PERSONALBYTES);
goto error;
}
memcpy(self->param.personal, person->buf, person->len);
}
/* Set tree parameters. */
if (fanout < 0 || fanout > 255) {
PyErr_SetString(PyExc_ValueError,
"fanout must be between 0 and 255");
goto error;
}
self->param.fanout = (uint8_t)fanout;
if (depth <= 0 || depth > 255) {
PyErr_SetString(PyExc_ValueError,
"depth must be between 1 and 255");
goto error;
}
self->param.depth = (uint8_t)depth;
if (leaf_size > 0xFFFFFFFFU) {
PyErr_SetString(PyExc_OverflowError, "leaf_size is too large");
goto error;
}
// NB: Simple assignment here would be incorrect on big endian platforms.
store32(&(self->param.leaf_length), leaf_size);
#ifdef HAVE_BLAKE2S
if (node_offset > 0xFFFFFFFFFFFFULL) {
/* maximum 2**48 - 1 */
PyErr_SetString(PyExc_OverflowError, "node_offset is too large");
goto error;
}
store48(&(self->param.node_offset), node_offset);
#else
// NB: Simple assignment here would be incorrect on big endian platforms.
store64(&(self->param.node_offset), node_offset);
#endif
if (node_depth < 0 || node_depth > 255) {
PyErr_SetString(PyExc_ValueError,
"node_depth must be between 0 and 255");
goto error;
}
self->param.node_depth = node_depth;
if (inner_size < 0 || inner_size > BLAKE2B_OUTBYTES) {
PyErr_Format(PyExc_ValueError,
"inner_size must be between 0 and is %d",
BLAKE2B_OUTBYTES);
goto error;
}
self->param.inner_length = inner_size;
/* Set key length. */
if ((key->obj != NULL) && key->len) {
if (key->len > BLAKE2B_KEYBYTES) {
PyErr_Format(PyExc_ValueError,
"maximum key length is %d bytes",
BLAKE2B_KEYBYTES);
goto error;
}
self->param.key_length = (uint8_t)key->len;
}
/* Initialize hash state. */
if (blake2b_init_param(&self->state, &self->param) < 0) {
PyErr_SetString(PyExc_RuntimeError,
"error initializing hash state");
goto error;
}
/* Set last node flag (must come after initialization). */
self->state.last_node = last_node;
/* Process key block if any. */
if (self->param.key_length) {
uint8_t block[BLAKE2B_BLOCKBYTES];
memset(block, 0, sizeof(block));
memcpy(block, key->buf, key->len);
blake2b_update(&self->state, block, sizeof(block));
secure_zero_memory(block, sizeof(block));
}
/* Process initial data if any. */
if (data != NULL) {
GET_BUFFER_VIEW_OR_ERROR(data, &buf, goto error);
if (buf.len >= HASHLIB_GIL_MINSIZE) {
Py_BEGIN_ALLOW_THREADS
blake2b_update(&self->state, buf.buf, buf.len);
Py_END_ALLOW_THREADS
} else {
blake2b_update(&self->state, buf.buf, buf.len);
}
PyBuffer_Release(&buf);
}
return (PyObject *)self;
error:
if (self != NULL) {
Py_DECREF(self);
}
return NULL;
}
/*[clinic input]
_blake2.blake2b.copy
Return a copy of the hash object.
[clinic start generated code]*/
static PyObject *
_blake2_blake2b_copy_impl(BLAKE2bObject *self)
/*[clinic end generated code: output=ff6acee5f93656ae input=e383c2d199fd8a2e]*/
{
BLAKE2bObject *cpy;
PyTypeObject *type = Py_GetType(self);
cpy = new_BLAKE2bObject(type);
Py_DECREF(type);
if (cpy == NULL)
return NULL;
ENTER_HASHLIB(self);
cpy->param = self->param;
cpy->state = self->state;
LEAVE_HASHLIB(self);
return (PyObject *)cpy;
}
/*[clinic input]
_blake2.blake2b.update
data: object
/
Update this hash object's state with the provided bytes-like object.
[clinic start generated code]*/
static PyObject *
_blake2_blake2b_update(BLAKE2bObject *self, PyObject *data)
/*[clinic end generated code: output=010dfcbe22654359 input=ffc4aa6a6a225d31]*/
{
Py_buffer buf;
GET_BUFFER_VIEW_OR_ERROUT(data, &buf);
if (self->lock == NULL && buf.len >= HASHLIB_GIL_MINSIZE)
self->lock = PyThread_allocate_lock();
if (self->lock != NULL) {
Py_BEGIN_ALLOW_THREADS
PyThread_acquire_lock(self->lock, 1);
blake2b_update(&self->state, buf.buf, buf.len);
PyThread_release_lock(self->lock);
Py_END_ALLOW_THREADS
} else {
blake2b_update(&self->state, buf.buf, buf.len);
}
PyBuffer_Release(&buf);
Py_RETURN_NONE;
}
/*[clinic input]
_blake2.blake2b.digest
Return the digest value as a bytes object.
[clinic start generated code]*/
static PyObject *
_blake2_blake2b_digest_impl(BLAKE2bObject *self)
/*[clinic end generated code: output=a5864660f4bfc61a input=7d21659e9c5fff02]*/
{
uint8_t digest[BLAKE2B_OUTBYTES];
blake2b_state state_cpy;
ENTER_HASHLIB(self);
state_cpy = self->state;
blake2b_final(&state_cpy, digest, self->param.digest_length);
LEAVE_HASHLIB(self);
return PyBytes_FromStringAndSize((const char *)digest,
self->param.digest_length);
}
/*[clinic input]
_blake2.blake2b.hexdigest
Return the digest value as a string of hexadecimal digits.
[clinic start generated code]*/
static PyObject *
_blake2_blake2b_hexdigest_impl(BLAKE2bObject *self)
/*[clinic end generated code: output=b5598a87d8794a60 input=76930f6946351f56]*/
{
uint8_t digest[BLAKE2B_OUTBYTES];
blake2b_state state_cpy;
ENTER_HASHLIB(self);
state_cpy = self->state;
blake2b_final(&state_cpy, digest, self->param.digest_length);
LEAVE_HASHLIB(self);
return _Py_strhex((const char *)digest, self->param.digest_length);
}
static PyMethodDef py_blake2b_methods[] = {
_BLAKE2_BLAKE2B_COPY_METHODDEF
_BLAKE2_BLAKE2B_DIGEST_METHODDEF
_BLAKE2_BLAKE2B_HEXDIGEST_METHODDEF
_BLAKE2_BLAKE2B_UPDATE_METHODDEF
{NULL, NULL}
};
static PyObject *
py_blake2b_get_name(BLAKE2bObject *self, void *closure)
{
return PyUnicode_FromString("blake2b");
}
static PyObject *
py_blake2b_get_block_size(BLAKE2bObject *self, void *closure)
{
return PyLong_FromLong(BLAKE2B_BLOCKBYTES);
}
static PyObject *
py_blake2b_get_digest_size(BLAKE2bObject *self, void *closure)
{
return PyLong_FromLong(self->param.digest_length);
}
static PyGetSetDef py_blake2b_getsetters[] = {
{"name", (getter)py_blake2b_get_name,
NULL, NULL, NULL},
{"block_size", (getter)py_blake2b_get_block_size,
NULL, NULL, NULL},
{"digest_size", (getter)py_blake2b_get_digest_size,
NULL, NULL, NULL},
{NULL}
};
static void
py_blake2b_dealloc(PyObject *self)
{
BLAKE2bObject *obj = (BLAKE2bObject *)self;
/* Try not to leave state in memory. */
secure_zero_memory(&obj->param, sizeof(obj->param));
secure_zero_memory(&obj->state, sizeof(obj->state));
if (obj->lock) {
PyThread_free_lock(obj->lock);
obj->lock = NULL;
}
PyObject_Del(self);
}
PyTypeObject PyBlake2_BLAKE2bType = {
PyVarObject_HEAD_INIT(NULL, 0)
"_blake2.blake2b", /* tp_name */
sizeof(BLAKE2bObject), /* tp_size */
0, /* tp_itemsize */
py_blake2b_dealloc, /* tp_dealloc */
0, /* tp_print */
0, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_compare */
0, /* tp_repr */
0, /* tp_as_number */
0, /* tp_as_sequence */
0, /* tp_as_mapping */
0, /* tp_hash */
0, /* tp_call */
0, /* tp_str */
0, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT, /* tp_flags */
py_blake2b_new__doc__, /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
py_blake2b_methods, /* tp_methods */
0, /* tp_members */
py_blake2b_getsetters, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
0, /* tp_init */
0, /* tp_alloc */
py_blake2b_new, /* tp_new */
};