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Rework mbedtls_ecp_write_key to remove unnecessary output parameter

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Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
This commit is contained in:
Steven Cooreman
2020-06-11 17:00:36 +02:00
parent e3fd39289e
commit c9b7f78647
5 changed files with 14 additions and 32 deletions
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5
library/ecp.c
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@ -3000,13 +3000,12 @@ cleanup:
* Write a private key.
*/
int mbedtls_ecp_write_key( mbedtls_ecp_group_id grp_id, mbedtls_ecp_keypair *key,
size_t *olen, unsigned char *buf, size_t buflen )
unsigned char *buf, size_t buflen )
{
int ret = 0;
ECP_VALIDATE_RET( key != NULL );
ECP_VALIDATE_RET( buf != NULL );
ECP_VALIDATE_RET( olen != NULL );
if( ( ret = mbedtls_ecp_group_load( &key->grp, grp_id ) ) != 0 )
return( ret );
@ -3022,7 +3021,6 @@ int mbedtls_ecp_write_key( mbedtls_ecp_group_id grp_id, mbedtls_ecp_keypair *key
return MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL;
MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary_le( &key->d, buf, buflen ) );
*olen = ECP_CURVE25519_KEY_SIZE;
}
else
ret = MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE;
@ -3033,7 +3031,6 @@ int mbedtls_ecp_write_key( mbedtls_ecp_group_id grp_id, mbedtls_ecp_keypair *key
if( mbedtls_ecp_get_type( &key->grp ) == MBEDTLS_ECP_TYPE_SHORT_WEIERSTRASS )
{
MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary( &key->d, buf, buflen ) );
*olen = mbedtls_mpi_size( &key->d );
}
#endif