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

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(IDF-specific patch.)
This commit is contained in:
Angus Gratton 2017-09-06 15:06:57 +10:00 committed by Angus Gratton
parent ae382b3bfa
commit 736db688a8
2 changed files with 18 additions and 0 deletions
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5
components/mbedtls/include/mbedtls/bignum.h
View file

@ -100,6 +100,8 @@
#define MBEDTLS_LN_2_DIV_LN_10_SCALE100 332
#define MBEDTLS_MPI_RW_BUFFER_SIZE ( ((MBEDTLS_MPI_MAX_BITS_SCALE100 + 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.
*
@ -746,6 +748,9 @@ int mbedtls_mpi_is_prime( const mbedtls_mpi *X,
int mbedtls_mpi_gen_prime( mbedtls_mpi *X, size_t nbits, int dh_flag,
int (*f_rng)(void *, unsigned char *, size_t),
void *p_rng );
#else /* MBEDTLS_BIGNUM_ALT */
#include "bignum_alt.h"
#endif /* MBEDTLS_BIGNUM_ALT */
/**
* \brief Checkup routine

13
components/mbedtls/library/bignum.c
View file

@ -58,6 +58,8 @@
#define mbedtls_free free
#endif
#if !defined(MBEDTLS_BIGNUM_ALT)
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_mpi_zeroize( mbedtls_mpi_uint *v, size_t n ) {
volatile mbedtls_mpi_uint *p = v; while( n-- ) *p++ = 0;
@ -1095,6 +1097,8 @@ int mbedtls_mpi_sub_int( mbedtls_mpi *X, const mbedtls_mpi *A, mbedtls_mpi_sint
return( mbedtls_mpi_sub_mpi( X, A, &_B ) );
}
#if !defined(MBEDTLS_MPI_MUL_MPI_ALT) || !defined(MBEDTLS_MPI_EXP_MOD_ALT)
/*
* Helper for mbedtls_mpi multiplication
*/
@ -1106,6 +1110,7 @@ static
*/
__attribute__ ((noinline))
#endif
void mpi_mul_hlp( size_t i, mbedtls_mpi_uint *s, mbedtls_mpi_uint *d, mbedtls_mpi_uint b )
{
mbedtls_mpi_uint c = 0, t = 0;
@ -1167,6 +1172,9 @@ void mpi_mul_hlp( size_t i, mbedtls_mpi_uint *s, mbedtls_mpi_uint *d, mbedtls_mp
while( c != 0 );
}
#endif
#if !defined(MBEDTLS_MPI_MUL_MPI_ALT)
/*
* Baseline multiplication: X = A * B (HAC 14.12)
*/
@ -1203,6 +1211,7 @@ cleanup:
return( ret );
}
#endif
/*
* Baseline multiplication: X = A * b
@ -1527,6 +1536,8 @@ int mbedtls_mpi_mod_int( mbedtls_mpi_uint *r, const mbedtls_mpi *A, mbedtls_mpi_
return( 0 );
}
#if !defined(MBEDTLS_MPI_EXP_MOD_ALT)
/*
* Fast Montgomery initialization (thanks to Tom St Denis)
*/
@ -1808,6 +1819,7 @@ cleanup:
return( ret );
}
#endif
/*
* Greatest common divisor: G = gcd(A, B) (HAC 14.54)
@ -2269,6 +2281,7 @@ cleanup:
}
#endif /* MBEDTLS_GENPRIME */
#endif /* MBEDTLS_BIGNUM_ALT */
#if defined(MBEDTLS_SELF_TEST)