mirror of
https://github.com/python/cpython.git
synced 2025-10-25 10:44:55 +00:00
0e0bc4e221
Many type object initializations labeled a field "tp_size" in the comment, but the name of that field is tp_basicsize.
437 lines
13 KiB
C
437 lines
13 KiB
C
/*
|
|
* Written in 2013 by Dmitry Chestnykh <dmitry@codingrobots.com>
|
|
* Modified for CPython by Christian Heimes <christian@python.org>
|
|
*
|
|
* 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;
|
|
|
|
if ((cpy = new_BLAKE2bObject(Py_TYPE(self))) == 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_basicsize */
|
|
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 */
|
|
};
|