cuberite/polarssl
1
0
Fork 0
mirror of https://github.com/cuberite/polarssl.git synced 2025-11-04 04:32:24 -05:00
Code Issues Packages Projects Releases Wiki Activity

Fix mpi_bigendian_to_host() on bigendian systems

Browse Source 
The previous implementation of mpi_bigendian_to_host() did
a byte-swapping regardless of the endianness of the system.

Fixes #2622.
This commit is contained in:
Hanno Becker 2019-05-01 17:09:11 +01:00
parent 1cd7bea2b1
commit 031d6335b7
1 changed files with 8 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
library/bignum.c
View File

@ -742,10 +742,15 @@ cleanup:
static mbedtls_mpi_uint mpi_uint_bigendian_to_host_c( mbedtls_mpi_uint x ) static mbedtls_mpi_uint mpi_uint_bigendian_to_host_c( mbedtls_mpi_uint x )
{ {
uint8_t i; uint8_t i;
unsigned char *x_ptr;
mbedtls_mpi_uint tmp = 0; mbedtls_mpi_uint tmp = 0;
/* This works regardless of the endianness. */
for( i = 0; i < ciL; i++, x >>= 8 ) for( i = 0, x_ptr = (unsigned char*) &x; i < ciL; i++, x_ptr++ )
tmp |= ( x & 0xFF ) << ( ( ciL - 1 - i ) << 3 ); {
tmp <<= CHAR_BIT;
tmp |= (mbedtls_mpi_uint) *x_ptr;
}
return( tmp ); return( tmp );
} }