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bignum_mod: Renamed m -> N in mbedtls_mpi_mod_write()

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Signed-off-by: Mihir Raj Singh <mihirrajsingh123@gmail.com>
This commit is contained in:
Mihir Raj Singh 2023-01-11 20:46:18 +05:30
parent fdc314b6fe
commit a43290d556
2 changed files with 24 additions and 23 deletions
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21
library/bignum_mod.c
View File

@ -380,37 +380,38 @@ cleanup:
return ret;
}
int mbedtls_mpi_mod_write(const mbedtls_mpi_mod_residue *r,
const mbedtls_mpi_mod_modulus *m,
int mbedtls_mpi_mod_write( const mbedtls_mpi_mod_residue *r,
const mbedtls_mpi_mod_modulus *N,
unsigned char *buf,
size_t buflen,
mbedtls_mpi_mod_ext_rep ext_rep)
mbedtls_mpi_mod_ext_rep ext_rep )
{
int ret = MBEDTLS_ERR_MPI_BAD_INPUT_DATA;
/* Do our best to check if r and m have been set up */
if (r->limbs == 0 || m->limbs == 0) {
if (r->limbs == 0 || N->limbs == 0) {
goto cleanup;
}
if (r->limbs != m->limbs) {
if (r->limbs != N->limbs) {
goto cleanup;
}
if (m->int_rep == MBEDTLS_MPI_MOD_REP_MONTGOMERY) {
ret = mbedtls_mpi_mod_raw_from_mont_rep(r->p, m);
if (N->int_rep == MBEDTLS_MPI_MOD_REP_MONTGOMERY) {
ret = mbedtls_mpi_mod_raw_from_mont_rep(r->p, N);
if (ret != 0) {
goto cleanup;
}
}
ret = mbedtls_mpi_mod_raw_write(r->p, m, buf, buflen, ext_rep);
ret = mbedtls_mpi_mod_raw_write( r->p, N, buf, buflen, ext_rep );
if (m->int_rep == MBEDTLS_MPI_MOD_REP_MONTGOMERY) {
if( N->int_rep == MBEDTLS_MPI_MOD_REP_MONTGOMERY )
{
/* If this fails, the value of r is corrupted and we want to return
* this error (as opposed to the error code from the write above) to
* let the caller know. If it succeeds, we want to return the error
* code from write above. */
int conv_ret = mbedtls_mpi_mod_raw_to_mont_rep(r->p, m);
int conv_ret = mbedtls_mpi_mod_raw_to_mont_rep(r->p, N);
if (ret == 0) {
ret = conv_ret;
}

18
library/bignum_mod.h
View File

@ -429,22 +429,22 @@ int mbedtls_mpi_mod_read( mbedtls_mpi_mod_residue *r,
/** Write a residue into a byte buffer.
*
* The modulus \p m must be the modulus associated with \p r (see
* The modulus \p N must be the modulus associated with \p r (see
* mbedtls_mpi_mod_residue_setup() and mbedtls_mpi_mod_read()).
*
* The residue will be automatically converted from the internal representation
* based on the value of `m->int_rep` field.
* based on the value of `N->int_rep` field.
*
* \warning If the buffer is smaller than `m->bits`, the number of
* \warning If the buffer is smaller than `N->bits`, the number of
* leading zeroes is leaked through timing. If \p r is
* secret, the caller must ensure that \p buflen is at least
* (`m->bits`+7)/8.
* (`N->bits`+7)/8.
*
* \param[in] r The address of the residue. It must have the same number of
* limbs as the modulus \p m. (\p r is an input parameter, but
* limbs as the modulus \p N. (\p r is an input parameter, but
* its value will be modified during execution and restored
* before the function returns.)
* \param[in] m The address of the modulus associated with \r.
* \param[in] N The address of the modulus associated with \r.
* \param[out] buf The output buffer to export to.
* \param buflen The length in bytes of \p buf.
* \param ext_rep The endianness in which the number should be written into
@ -459,11 +459,11 @@ int mbedtls_mpi_mod_read( mbedtls_mpi_mod_residue *r,
* memory for conversion. Can occur only for moduli with
* MBEDTLS_MPI_MOD_REP_MONTGOMERY.
*/
int mbedtls_mpi_mod_write(const mbedtls_mpi_mod_residue *r,
const mbedtls_mpi_mod_modulus *m,
int mbedtls_mpi_mod_write( const mbedtls_mpi_mod_residue *r,
const mbedtls_mpi_mod_modulus *N,
unsigned char *buf,
size_t buflen,
mbedtls_mpi_mod_ext_rep ext_rep);
mbedtls_mpi_mod_ext_rep ext_rep );
/* END MERGE SLOT 7 */
/* BEGIN MERGE SLOT 8 */