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extmod/moduhashlib: Add support for SHA1 (based on axTLS). 

SHA1 is used in a number of protocols and algorithm originated 5 years ago
or so, in other words, it's in "wide use", and only newer protocols use
SHA2.

The implementation depends on axTLS enabled. TODO: Make separate config
option specifically for sha1().
This commit is contained in:
Paul Sokolovsky 2016-01-24 20:52:54 +02:00
parent df4ce930e3
commit ee1656e148
2 changed files with 59 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
extmod/moduhashlib.c
View File

@ -33,6 +33,9 @@
#if MICROPY_PY_UHASHLIB
#include "crypto-algorithms/sha256.h"
#if MICROPY_PY_USSL
#include "lib/axtls/crypto/crypto.h"
#endif
typedef struct _mp_obj_hash_t {
mp_obj_base_t base;
@ -52,6 +55,21 @@ STATIC mp_obj_t hash_make_new(const mp_obj_type_t *type, size_t n_args, size_t n
return MP_OBJ_FROM_PTR(o);
}
#if MICROPY_PY_USSL
STATIC mp_obj_t sha1_update(mp_obj_t self_in, mp_obj_t arg);
STATIC mp_obj_t sha1_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
mp_arg_check_num(n_args, n_kw, 0, 1, false);
mp_obj_hash_t *o = m_new_obj_var(mp_obj_hash_t, char, sizeof(SHA1_CTX));
o->base.type = type;
SHA1_Init((SHA1_CTX*)o->state);
if (n_args == 1) {
sha1_update(MP_OBJ_FROM_PTR(o), args[0]);
}
return MP_OBJ_FROM_PTR(o);
}
#endif
STATIC mp_obj_t hash_update(mp_obj_t self_in, mp_obj_t arg) {
mp_obj_hash_t *self = MP_OBJ_TO_PTR(self_in);
mp_buffer_info_t bufinfo;
@ -61,6 +79,17 @@ STATIC mp_obj_t hash_update(mp_obj_t self_in, mp_obj_t arg) {
}
MP_DEFINE_CONST_FUN_OBJ_2(hash_update_obj, hash_update);
#if MICROPY_PY_USSL
STATIC mp_obj_t sha1_update(mp_obj_t self_in, mp_obj_t arg) {
mp_obj_hash_t *self = MP_OBJ_TO_PTR(self_in);
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(arg, &bufinfo, MP_BUFFER_READ);
SHA1_Update((SHA1_CTX*)self->state, bufinfo.buf, bufinfo.len);
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_2(sha1_update_obj, sha1_update);
#endif
STATIC mp_obj_t hash_digest(mp_obj_t self_in) {
mp_obj_hash_t *self = MP_OBJ_TO_PTR(self_in);
vstr_t vstr;
@ -70,6 +99,17 @@ STATIC mp_obj_t hash_digest(mp_obj_t self_in) {
}
MP_DEFINE_CONST_FUN_OBJ_1(hash_digest_obj, hash_digest);
#if MICROPY_PY_USSL
STATIC mp_obj_t sha1_digest(mp_obj_t self_in) {
mp_obj_hash_t *self = MP_OBJ_TO_PTR(self_in);
vstr_t vstr;
vstr_init_len(&vstr, SHA1_SIZE);
SHA1_Final((byte*)vstr.buf, (SHA1_CTX*)self->state);
return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr);
}
MP_DEFINE_CONST_FUN_OBJ_1(sha1_digest_obj, sha1_digest);
#endif
STATIC const mp_rom_map_elem_t hash_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_update), MP_ROM_PTR(&hash_update_obj) },
{ MP_ROM_QSTR(MP_QSTR_digest), MP_ROM_PTR(&hash_digest_obj) },
@ -84,9 +124,27 @@ STATIC const mp_obj_type_t sha256_type = {
.locals_dict = (void*)&hash_locals_dict,
};
#if MICROPY_PY_USSL
STATIC const mp_rom_map_elem_t sha1_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_update), MP_ROM_PTR(&sha1_update_obj) },
{ MP_ROM_QSTR(MP_QSTR_digest), MP_ROM_PTR(&sha1_digest_obj) },
};
STATIC MP_DEFINE_CONST_DICT(sha1_locals_dict, sha1_locals_dict_table);
STATIC const mp_obj_type_t sha1_type = {
{ &mp_type_type },
.name = MP_QSTR_sha1,
.make_new = sha1_make_new,
.locals_dict = (void*)&sha1_locals_dict,
};
#endif
STATIC const mp_rom_map_elem_t mp_module_hashlib_globals_table[] = {
{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_uhashlib) },
{ MP_ROM_QSTR(MP_QSTR_sha256), MP_ROM_PTR(&sha256_type) },
#if MICROPY_PY_USSL
{ MP_ROM_QSTR(MP_QSTR_sha1), MP_ROM_PTR(&sha1_type) },
#endif
};
STATIC MP_DEFINE_CONST_DICT(mp_module_hashlib_globals, mp_module_hashlib_globals_table);

1
py/qstrdefs.h
View File

@ -614,6 +614,7 @@ Q(uhashlib)
Q(update)
Q(digest)
Q(sha256)
Q(sha1)
#endif
#if MICROPY_PY_UBINASCII