espressif/mbedtls
1
0
Fork 0
mirror of https://github.com/espressif/mbedtls.git synced 2025-05-09 11:21:21 +08:00
Code Issues Packages Projects Releases Wiki Activity

mbedtls: Re-apply MBEDTLS_BIGNUM_ALT & related macros for custom bignum functions

Browse Source 
(IDF-specific patch.)

(cherry picked from commit f859b9bc7579246703446c158270ae038442351c)
This commit is contained in:
Angus Gratton 2017-09-06 15:06:57 +10:00 committed by nilesh.kale
parent 71c569d44b
commit 1c2c205089
2 changed files with 17 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
include/mbedtls/bignum.h
View File

@ -99,6 +99,8 @@
MBEDTLS_LN_2_DIV_LN_10_SCALE100 - 1) / \
MBEDTLS_LN_2_DIV_LN_10_SCALE100) + 10 + 6)
#if !defined(MBEDTLS_BIGNUM_ALT)
/*
* Define the base integer type, architecture-wise.
*
@ -1065,6 +1067,9 @@ typedef enum {
int mbedtls_mpi_gen_prime(mbedtls_mpi *X, size_t nbits, int flags,
int (*f_rng)(void *, unsigned char *, size_t),
void *p_rng);
#else /* MBEDTLS_BIGNUM_ALT */
#include "bignum_alt.h"
#endif /* MBEDTLS_BIGNUM_ALT */
#if defined(MBEDTLS_SELF_TEST)

14
library/bignum.c
View File

@ -38,7 +38,7 @@
#include "mbedtls/platform.h"
#if !defined(MBEDTLS_BIGNUM_ALT)
/*
* Conditionally select an MPI sign in constant time.
@ -1187,6 +1187,7 @@ int mbedtls_mpi_sub_int(mbedtls_mpi *X, const mbedtls_mpi *A, mbedtls_mpi_sint b
return mbedtls_mpi_sub_mpi(X, A, &B);
}
#if !defined(MBEDTLS_MPI_MUL_MPI_ALT)
/*
* Baseline multiplication: X = A * B (HAC 14.12)
*/
@ -1282,6 +1283,7 @@ int mbedtls_mpi_mul_int(mbedtls_mpi *X, const mbedtls_mpi *A, mbedtls_mpi_uint b
cleanup:
return ret;
}
#endif
/*
* Unsigned integer divide - double mbedtls_mpi_uint dividend, u1/u0, and
@ -1728,13 +1730,19 @@ cleanup:
return ret;
}
#if !defined(MBEDTLS_MPI_EXP_MOD_ALT)
/*
* Sliding-window exponentiation: X = A^E mod N (HAC 14.85)
*/
int mbedtls_mpi_exp_mod(mbedtls_mpi *X, const mbedtls_mpi *A,
const mbedtls_mpi *E, const mbedtls_mpi *N,
mbedtls_mpi *prec_RR)
{
return mbedtls_mpi_exp_mod_optionally_safe(X, A, E, MBEDTLS_MPI_IS_SECRET, N, prec_RR);
}
#endif
int mbedtls_mpi_exp_mod_unsafe(mbedtls_mpi *X, const mbedtls_mpi *A,
const mbedtls_mpi *E, const mbedtls_mpi *N,
@ -1742,6 +1750,7 @@ int mbedtls_mpi_exp_mod_unsafe(mbedtls_mpi *X, const mbedtls_mpi *A,
{
return mbedtls_mpi_exp_mod_optionally_safe(X, A, E, MBEDTLS_MPI_IS_PUBLIC, N, prec_RR);
}
/*
* Greatest common divisor: G = gcd(A, B) (HAC 14.54)
@ -2298,6 +2307,7 @@ cleanup:
}
#endif /* MBEDTLS_GENPRIME */
#endif /* MBEDTLS_BIGNUM_ALT */
#if defined(MBEDTLS_SELF_TEST)