mirror of
https://github.com/python/cpython.git
synced 2024-12-01 11:15:56 +01:00
417 lines
11 KiB
C
417 lines
11 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 blake2s_impl.c.
|
|
*/
|
|
|
|
#ifndef Py_BUILD_CORE_BUILTIN
|
|
# define Py_BUILD_CORE_MODULE 1
|
|
#endif
|
|
|
|
#include "Python.h"
|
|
#include "pycore_strhex.h" // _Py_strhex()
|
|
|
|
#include "../hashlib.h"
|
|
#include "blake2module.h"
|
|
|
|
#ifndef HAVE_LIBB2
|
|
/* 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/blake2s.c"
|
|
#else
|
|
#include "impl/blake2s-ref.c"
|
|
#endif
|
|
#endif // !HAVE_LIBB2
|
|
|
|
#define HAVE_BLAKE2S 1
|
|
|
|
extern PyType_Spec blake2s_type_spec;
|
|
|
|
|
|
typedef struct {
|
|
PyObject_HEAD
|
|
blake2s_param param;
|
|
blake2s_state state;
|
|
PyThread_type_lock lock;
|
|
} BLAKE2sObject;
|
|
|
|
#include "clinic/blake2s_impl.c.h"
|
|
|
|
/*[clinic input]
|
|
module _blake2
|
|
class _blake2.blake2s "BLAKE2sObject *" "&PyBlake2_BLAKE2sType"
|
|
[clinic start generated code]*/
|
|
/*[clinic end generated code: output=da39a3ee5e6b4b0d input=4b79d7ffe07286ce]*/
|
|
|
|
|
|
static BLAKE2sObject *
|
|
new_BLAKE2sObject(PyTypeObject *type)
|
|
{
|
|
BLAKE2sObject *self;
|
|
self = (BLAKE2sObject *)type->tp_alloc(type, 0);
|
|
if (self != NULL) {
|
|
self->lock = NULL;
|
|
}
|
|
return self;
|
|
}
|
|
|
|
/*[clinic input]
|
|
@classmethod
|
|
_blake2.blake2s.__new__ as py_blake2s_new
|
|
data: object(c_default="NULL") = b''
|
|
/
|
|
*
|
|
digest_size: int(c_default="BLAKE2S_OUTBYTES") = _blake2.blake2s.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
|
|
usedforsecurity: bool = True
|
|
|
|
Return a new BLAKE2s hash object.
|
|
[clinic start generated code]*/
|
|
|
|
static PyObject *
|
|
py_blake2s_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, int usedforsecurity)
|
|
/*[clinic end generated code: output=556181f73905c686 input=4dda87723f23abb0]*/
|
|
{
|
|
BLAKE2sObject *self = NULL;
|
|
Py_buffer buf;
|
|
|
|
self = new_BLAKE2sObject(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 > BLAKE2S_OUTBYTES) {
|
|
PyErr_Format(PyExc_ValueError,
|
|
"digest_size must be between 1 and %d bytes",
|
|
BLAKE2S_OUTBYTES);
|
|
goto error;
|
|
}
|
|
self->param.digest_length = digest_size;
|
|
|
|
/* Set salt parameter. */
|
|
if ((salt->obj != NULL) && salt->len) {
|
|
if (salt->len > BLAKE2S_SALTBYTES) {
|
|
PyErr_Format(PyExc_ValueError,
|
|
"maximum salt length is %d bytes",
|
|
BLAKE2S_SALTBYTES);
|
|
goto error;
|
|
}
|
|
memcpy(self->param.salt, salt->buf, salt->len);
|
|
}
|
|
|
|
/* Set personalization parameter. */
|
|
if ((person->obj != NULL) && person->len) {
|
|
if (person->len > BLAKE2S_PERSONALBYTES) {
|
|
PyErr_Format(PyExc_ValueError,
|
|
"maximum person length is %d bytes",
|
|
BLAKE2S_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 > BLAKE2S_OUTBYTES) {
|
|
PyErr_Format(PyExc_ValueError,
|
|
"inner_size must be between 0 and is %d",
|
|
BLAKE2S_OUTBYTES);
|
|
goto error;
|
|
}
|
|
self->param.inner_length = inner_size;
|
|
|
|
/* Set key length. */
|
|
if ((key->obj != NULL) && key->len) {
|
|
if (key->len > BLAKE2S_KEYBYTES) {
|
|
PyErr_Format(PyExc_ValueError,
|
|
"maximum key length is %d bytes",
|
|
BLAKE2S_KEYBYTES);
|
|
goto error;
|
|
}
|
|
self->param.key_length = (uint8_t)key->len;
|
|
}
|
|
|
|
/* Initialize hash state. */
|
|
if (blake2s_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[BLAKE2S_BLOCKBYTES];
|
|
memset(block, 0, sizeof(block));
|
|
memcpy(block, key->buf, key->len);
|
|
blake2s_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
|
|
blake2s_update(&self->state, buf.buf, buf.len);
|
|
Py_END_ALLOW_THREADS
|
|
} else {
|
|
blake2s_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.blake2s.copy
|
|
|
|
Return a copy of the hash object.
|
|
[clinic start generated code]*/
|
|
|
|
static PyObject *
|
|
_blake2_blake2s_copy_impl(BLAKE2sObject *self)
|
|
/*[clinic end generated code: output=5b90131c4eae275e input=0b9d44942f0fe4b2]*/
|
|
{
|
|
BLAKE2sObject *cpy;
|
|
|
|
if ((cpy = new_BLAKE2sObject(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.blake2s.update
|
|
|
|
data: object
|
|
/
|
|
|
|
Update this hash object's state with the provided bytes-like object.
|
|
[clinic start generated code]*/
|
|
|
|
static PyObject *
|
|
_blake2_blake2s_update(BLAKE2sObject *self, PyObject *data)
|
|
/*[clinic end generated code: output=757dc087fec37815 input=97500db2f9de4aaa]*/
|
|
{
|
|
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);
|
|
blake2s_update(&self->state, buf.buf, buf.len);
|
|
PyThread_release_lock(self->lock);
|
|
Py_END_ALLOW_THREADS
|
|
} else {
|
|
blake2s_update(&self->state, buf.buf, buf.len);
|
|
}
|
|
PyBuffer_Release(&buf);
|
|
|
|
Py_RETURN_NONE;
|
|
}
|
|
|
|
/*[clinic input]
|
|
_blake2.blake2s.digest
|
|
|
|
Return the digest value as a bytes object.
|
|
[clinic start generated code]*/
|
|
|
|
static PyObject *
|
|
_blake2_blake2s_digest_impl(BLAKE2sObject *self)
|
|
/*[clinic end generated code: output=40c566ca4bc6bc51 input=f41e0b8d6d937454]*/
|
|
{
|
|
uint8_t digest[BLAKE2S_OUTBYTES];
|
|
blake2s_state state_cpy;
|
|
|
|
ENTER_HASHLIB(self);
|
|
state_cpy = self->state;
|
|
blake2s_final(&state_cpy, digest, self->param.digest_length);
|
|
LEAVE_HASHLIB(self);
|
|
return PyBytes_FromStringAndSize((const char *)digest,
|
|
self->param.digest_length);
|
|
}
|
|
|
|
/*[clinic input]
|
|
_blake2.blake2s.hexdigest
|
|
|
|
Return the digest value as a string of hexadecimal digits.
|
|
[clinic start generated code]*/
|
|
|
|
static PyObject *
|
|
_blake2_blake2s_hexdigest_impl(BLAKE2sObject *self)
|
|
/*[clinic end generated code: output=15153eb5e59c52eb input=c77a1321567e8952]*/
|
|
{
|
|
uint8_t digest[BLAKE2S_OUTBYTES];
|
|
blake2s_state state_cpy;
|
|
|
|
ENTER_HASHLIB(self);
|
|
state_cpy = self->state;
|
|
blake2s_final(&state_cpy, digest, self->param.digest_length);
|
|
LEAVE_HASHLIB(self);
|
|
return _Py_strhex((const char *)digest, self->param.digest_length);
|
|
}
|
|
|
|
|
|
static PyMethodDef py_blake2s_methods[] = {
|
|
_BLAKE2_BLAKE2S_COPY_METHODDEF
|
|
_BLAKE2_BLAKE2S_DIGEST_METHODDEF
|
|
_BLAKE2_BLAKE2S_HEXDIGEST_METHODDEF
|
|
_BLAKE2_BLAKE2S_UPDATE_METHODDEF
|
|
{NULL, NULL}
|
|
};
|
|
|
|
|
|
|
|
static PyObject *
|
|
py_blake2s_get_name(BLAKE2sObject *self, void *closure)
|
|
{
|
|
return PyUnicode_FromString("blake2s");
|
|
}
|
|
|
|
|
|
|
|
static PyObject *
|
|
py_blake2s_get_block_size(BLAKE2sObject *self, void *closure)
|
|
{
|
|
return PyLong_FromLong(BLAKE2S_BLOCKBYTES);
|
|
}
|
|
|
|
|
|
|
|
static PyObject *
|
|
py_blake2s_get_digest_size(BLAKE2sObject *self, void *closure)
|
|
{
|
|
return PyLong_FromLong(self->param.digest_length);
|
|
}
|
|
|
|
|
|
static PyGetSetDef py_blake2s_getsetters[] = {
|
|
{"name", (getter)py_blake2s_get_name,
|
|
NULL, NULL, NULL},
|
|
{"block_size", (getter)py_blake2s_get_block_size,
|
|
NULL, NULL, NULL},
|
|
{"digest_size", (getter)py_blake2s_get_digest_size,
|
|
NULL, NULL, NULL},
|
|
{NULL}
|
|
};
|
|
|
|
|
|
static void
|
|
py_blake2s_dealloc(PyObject *self)
|
|
{
|
|
BLAKE2sObject *obj = (BLAKE2sObject *)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;
|
|
}
|
|
|
|
PyTypeObject *type = Py_TYPE(self);
|
|
PyObject_Free(self);
|
|
Py_DECREF(type);
|
|
}
|
|
|
|
static PyType_Slot blake2s_type_slots[] = {
|
|
{Py_tp_dealloc, py_blake2s_dealloc},
|
|
{Py_tp_doc, (char *)py_blake2s_new__doc__},
|
|
{Py_tp_methods, py_blake2s_methods},
|
|
{Py_tp_getset, py_blake2s_getsetters},
|
|
{Py_tp_new, py_blake2s_new},
|
|
{0,0}
|
|
};
|
|
|
|
PyType_Spec blake2s_type_spec = {
|
|
.name = "_blake2.blake2s",
|
|
.basicsize = sizeof(BLAKE2sObject),
|
|
.flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_IMMUTABLETYPE,
|
|
.slots = blake2s_type_slots
|
|
};
|