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

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(IDF-specific patch.)

(cherry picked from commit f859b9bc75)
This commit is contained in:
Angus Gratton
2017-09-06 15:06:57 +10:00
committed by Mahavir Jain
parent 0bebf8b8c7
commit e8f1d22d65
2 changed files with 17 additions and 2 deletions
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include/mbedtls/bignum.h
+5
View File
@@ -100,6 +100,8 @@
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.
*
@@ -1069,6 +1071,9 @@ typedef enum {
int mbedtls_mpi_gen_prime(mbedtls_mpi *X, size_t nbits, int flags,
mbedtls_f_rng_t *f_rng,
void *p_rng);
#else /* MBEDTLS_BIGNUM_ALT */
#include "bignum_alt.h"
#endif /* MBEDTLS_BIGNUM_ALT */
#if defined(MBEDTLS_SELF_TEST)
library/bignum.c
+12 -2
View File
@@ -38,7 +38,7 @@
#include "mbedtls/platform.h"
#if !defined(MBEDTLS_BIGNUM_ALT)
/*
* Conditionally select an MPI sign in constant time.
@@ -1192,6 +1192,7 @@ 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)
*/
@@ -1287,6 +1288,7 @@ 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
@@ -1733,13 +1735,19 @@ 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,
@@ -1747,6 +1755,7 @@ 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);
}
/* Constant-time GCD and/or modinv with odd modulus and A <= N */
int mbedtls_mpi_gcd_modinv_odd(mbedtls_mpi *G,
@@ -2369,6 +2378,7 @@ cleanup:
}
#endif /* MBEDTLS_GENPRIME */
#endif /* MBEDTLS_BIGNUM_ALT */
#if defined(MBEDTLS_SELF_TEST)