JezK
Edit File: bignum.py
# Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or # implied. # See the License for the specific language governing permissions and # limitations under the License. from __future__ import absolute_import, division, print_function INCLUDES = """ #include <openssl/bn.h> """ TYPES = """ typedef ... BN_CTX; typedef ... BIGNUM; /* * TODO: This typedef is wrong. * * This is due to limitations of cffi. * See https://bitbucket.org/cffi/cffi/issue/69 * * For another possible work-around (not used here because it involves more * complicated use of the cffi API which falls outside the general pattern used * by this package), see * http://paste.pound-python.org/show/iJcTUMkKeBeS6yXpZWUU/ * * The work-around used here is to just be sure to declare a type that is at * least as large as the real type. Maciej explains: * * <fijal> I think you want to declare your value too large (e.g. long) * <fijal> that way you'll never pass garbage */ typedef uintptr_t BN_ULONG; """ FUNCTIONS = """ BIGNUM *BN_new(void); void BN_free(BIGNUM *); BN_CTX *BN_CTX_new(void); void BN_CTX_free(BN_CTX *); void BN_CTX_start(BN_CTX *); BIGNUM *BN_CTX_get(BN_CTX *); void BN_CTX_end(BN_CTX *); BIGNUM *BN_copy(BIGNUM *, const BIGNUM *); BIGNUM *BN_dup(const BIGNUM *); int BN_set_word(BIGNUM *, BN_ULONG); BN_ULONG BN_get_word(const BIGNUM *); const BIGNUM *BN_value_one(void); char *BN_bn2hex(const BIGNUM *); int BN_hex2bn(BIGNUM **, const char *); int BN_dec2bn(BIGNUM **, const char *); int BN_bn2bin(const BIGNUM *, unsigned char *); BIGNUM *BN_bin2bn(const unsigned char *, int, BIGNUM *); int BN_num_bits(const BIGNUM *); int BN_cmp(const BIGNUM *, const BIGNUM *); int BN_add(BIGNUM *, const BIGNUM *, const BIGNUM *); int BN_sub(BIGNUM *, const BIGNUM *, const BIGNUM *); int BN_mul(BIGNUM *, const BIGNUM *, const BIGNUM *, BN_CTX *); int BN_sqr(BIGNUM *, const BIGNUM *, BN_CTX *); int BN_div(BIGNUM *, BIGNUM *, const BIGNUM *, const BIGNUM *, BN_CTX *); int BN_nnmod(BIGNUM *, const BIGNUM *, const BIGNUM *, BN_CTX *); int BN_mod_add(BIGNUM *, const BIGNUM *, const BIGNUM *, const BIGNUM *, BN_CTX *); int BN_mod_sub(BIGNUM *, const BIGNUM *, const BIGNUM *, const BIGNUM *, BN_CTX *); int BN_mod_mul(BIGNUM *, const BIGNUM *, const BIGNUM *, const BIGNUM *, BN_CTX *); int BN_mod_sqr(BIGNUM *, const BIGNUM *, const BIGNUM *, BN_CTX *); int BN_exp(BIGNUM *, const BIGNUM *, const BIGNUM *, BN_CTX *); int BN_mod_exp(BIGNUM *, const BIGNUM *, const BIGNUM *, const BIGNUM *, BN_CTX *); int BN_gcd(BIGNUM *, const BIGNUM *, const BIGNUM *, BN_CTX *); BIGNUM *BN_mod_inverse(BIGNUM *, const BIGNUM *, const BIGNUM *, BN_CTX *); int BN_set_bit(BIGNUM *, int); int BN_clear_bit(BIGNUM *, int); int BN_is_bit_set(const BIGNUM *, int); int BN_mask_bits(BIGNUM *, int); """ MACROS = """ int BN_zero(BIGNUM *); int BN_one(BIGNUM *); int BN_mod(BIGNUM *, const BIGNUM *, const BIGNUM *, BN_CTX *); int BN_lshift(BIGNUM *, const BIGNUM *, int); int BN_lshift1(BIGNUM *, BIGNUM *); int BN_rshift(BIGNUM *, BIGNUM *, int); int BN_rshift1(BIGNUM *, BIGNUM *); """ CUSTOMIZATIONS = """ """ CONDITIONAL_NAMES = {}