lib/mbedtls
1
0
Fork 0
mirror of https://github.com/Mbed-TLS/mbedtls.git synced 2025-07-28 00:21:48 +03:00
Code Activity

bignum_mod_raw: Renamed m -> N in mbedtls_mpi_mod_raw_neg()

Browse Source 
Signed-off-by: Mihir Raj Singh <mihirrajsingh123@gmail.com>
This commit is contained in:
Mihir Raj Singh
2023-01-11 21:12:46 +05:30
parent b0354c5b71
commit 432cacf5c2
4 changed files with 105 additions and 110 deletions
Download Patch File Download Diff File Expand all files Collapse all files

65
library/bignum_mod_raw.c
View File

@ -49,22 +49,22 @@ void mbedtls_mpi_mod_raw_cond_swap(mbedtls_mpi_uint *X,
mbedtls_mpi_core_cond_swap(X, Y, N->limbs, swap);
}
int mbedtls_mpi_mod_raw_read( mbedtls_mpi_uint *X,
const mbedtls_mpi_mod_modulus *N,
const unsigned char *input,
size_t input_length,
mbedtls_mpi_mod_ext_rep ext_rep )
int mbedtls_mpi_mod_raw_read(mbedtls_mpi_uint *X,
const mbedtls_mpi_mod_modulus *N,
const unsigned char *input,
size_t input_length,
mbedtls_mpi_mod_ext_rep ext_rep)
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
switch (ext_rep) {
case MBEDTLS_MPI_MOD_EXT_REP_LE:
ret = mbedtls_mpi_core_read_le( X, N->limbs,
input, input_length );
ret = mbedtls_mpi_core_read_le(X, N->limbs,
input, input_length);
break;
case MBEDTLS_MPI_MOD_EXT_REP_BE:
ret = mbedtls_mpi_core_read_be( X, N->limbs,
input, input_length );
ret = mbedtls_mpi_core_read_be(X, N->limbs,
input, input_length);
break;
default:
return MBEDTLS_ERR_MPI_BAD_INPUT_DATA;
@ -74,8 +74,7 @@ int mbedtls_mpi_mod_raw_read( mbedtls_mpi_uint *X,
goto cleanup;
}
if( !mbedtls_mpi_core_lt_ct( X, N->p, N->limbs ) )
{
if (!mbedtls_mpi_core_lt_ct(X, N->p, N->limbs)) {
ret = MBEDTLS_ERR_MPI_BAD_INPUT_DATA;
goto cleanup;
}
@ -85,19 +84,19 @@ cleanup:
return ret;
}
int mbedtls_mpi_mod_raw_write( const mbedtls_mpi_uint *A,
const mbedtls_mpi_mod_modulus *N,
unsigned char *output,
size_t output_length,
mbedtls_mpi_mod_ext_rep ext_rep )
int mbedtls_mpi_mod_raw_write(const mbedtls_mpi_uint *A,
const mbedtls_mpi_mod_modulus *N,
unsigned char *output,
size_t output_length,
mbedtls_mpi_mod_ext_rep ext_rep)
{
switch (ext_rep) {
case MBEDTLS_MPI_MOD_EXT_REP_LE:
return( mbedtls_mpi_core_write_le( A, N->limbs,
output, output_length ) );
return mbedtls_mpi_core_write_le(A, N->limbs,
output, output_length);
case MBEDTLS_MPI_MOD_EXT_REP_BE:
return( mbedtls_mpi_core_write_be( A, N->limbs,
output, output_length ) );
return mbedtls_mpi_core_write_be(A, N->limbs,
output, output_length);
default:
return MBEDTLS_ERR_MPI_BAD_INPUT_DATA;
}
@ -229,35 +228,35 @@ int mbedtls_mpi_mod_raw_random(mbedtls_mpi_uint *X,
/* END MERGE SLOT 6 */
/* BEGIN MERGE SLOT 7 */
int mbedtls_mpi_mod_raw_to_mont_rep( mbedtls_mpi_uint *X,
const mbedtls_mpi_mod_modulus *N )
int mbedtls_mpi_mod_raw_to_mont_rep(mbedtls_mpi_uint *X,
const mbedtls_mpi_mod_modulus *N)
{
mbedtls_mpi_uint *T;
const size_t t_limbs = mbedtls_mpi_core_montmul_working_limbs( N->limbs );
const size_t t_limbs = mbedtls_mpi_core_montmul_working_limbs(N->limbs);
if ((T = (mbedtls_mpi_uint *) mbedtls_calloc(t_limbs, ciL)) == NULL) {
return MBEDTLS_ERR_MPI_ALLOC_FAILED;
}
mbedtls_mpi_core_to_mont_rep( X, X, N->p, N->limbs,
N->rep.mont.mm, N->rep.mont.rr, T );
mbedtls_mpi_core_to_mont_rep(X, X, N->p, N->limbs,
N->rep.mont.mm, N->rep.mont.rr, T);
mbedtls_platform_zeroize(T, t_limbs * ciL);
mbedtls_free(T);
return 0;
}
int mbedtls_mpi_mod_raw_from_mont_rep( mbedtls_mpi_uint *X,
const mbedtls_mpi_mod_modulus *N )
int mbedtls_mpi_mod_raw_from_mont_rep(mbedtls_mpi_uint *X,
const mbedtls_mpi_mod_modulus *N)
{
const size_t t_limbs = mbedtls_mpi_core_montmul_working_limbs( N->limbs );
const size_t t_limbs = mbedtls_mpi_core_montmul_working_limbs(N->limbs);
mbedtls_mpi_uint *T;
if ((T = (mbedtls_mpi_uint *) mbedtls_calloc(t_limbs, ciL)) == NULL) {
return MBEDTLS_ERR_MPI_ALLOC_FAILED;
}
mbedtls_mpi_core_from_mont_rep( X, X, N->p, N->limbs, N->rep.mont.mm, T );
mbedtls_mpi_core_from_mont_rep(X, X, N->p, N->limbs, N->rep.mont.mm, T);
mbedtls_platform_zeroize(T, t_limbs * ciL);
mbedtls_free(T);
@ -266,14 +265,14 @@ int mbedtls_mpi_mod_raw_from_mont_rep( mbedtls_mpi_uint *X,
void mbedtls_mpi_mod_raw_neg(mbedtls_mpi_uint *X,
const mbedtls_mpi_uint *A,
const mbedtls_mpi_mod_modulus *m)
const mbedtls_mpi_mod_modulus *N)
{
mbedtls_mpi_core_sub(X, m->p, A, m->limbs);
mbedtls_mpi_core_sub(X, N->p, A, N->limbs);
/* If A=0 initially, then X=N now. Detect this by
* subtracting N and catching the carry. */
mbedtls_mpi_uint borrow = mbedtls_mpi_core_sub(X, X, m->p, m->limbs);
(void) mbedtls_mpi_core_add_if(X, m->p, m->limbs, (unsigned) borrow);
mbedtls_mpi_uint borrow = mbedtls_mpi_core_sub(X, X, N->p, N->limbs);
(void) mbedtls_mpi_core_add_if(X, N->p, N->limbs, (unsigned) borrow);
}
/* END MERGE SLOT 7 */