yuzu/mbedtls
1
0
Fork 0
mirror of https://github.com/yuzu-emu/mbedtls.git synced 2024-12-24 12:55:41 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add check for presence of relevant parameters in mbedtls_rsa_private

Browse source 
If CRT is used, check for the presence N, P, Q, D, E, DP, DQ and QP. If CRT is
not used, check for N, P, Q, D, E only.
This commit is contained in:
Hanno Becker 2017-08-25 11:03:34 +01:00
parent 603b8c62c4
commit 45037ceac5
1 changed files with 17 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
library/rsa.c
View file

@ -1202,14 +1202,28 @@ int mbedtls_rsa_private( mbedtls_rsa_context *ctx,
mbedtls_mpi *DQ = &ctx->DQ; mbedtls_mpi *DQ = &ctx->DQ;
#endif #endif
/* Make sure we have private key info, prevent possible misuse */ /* Sanity-check that all relevant fields are at least set,
if( ctx->P.p == NULL || ctx->Q.p == NULL || ctx->D.p == NULL ) * but don't perform a full keycheck. */
if( mbedtls_mpi_cmp_int( &ctx->N, 0 ) == 0 ||
mbedtls_mpi_cmp_int( &ctx->P, 0 ) == 0 ||
mbedtls_mpi_cmp_int( &ctx->Q, 0 ) == 0 ||
mbedtls_mpi_cmp_int( &ctx->D, 0 ) == 0 ||
mbedtls_mpi_cmp_int( &ctx->E, 0 ) == 0 )
{
return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
}
#if !defined(MBEDTLS_RSA_NO_CRT)
if( mbedtls_mpi_cmp_int( &ctx->DP, 0 ) == 0 ||
mbedtls_mpi_cmp_int( &ctx->DQ, 0 ) == 0 ||
mbedtls_mpi_cmp_int( &ctx->QP, 0 ) == 0 )
{
return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
}
#endif /* MBEDTLS_RSA_NO_CRT */
mbedtls_mpi_init( &T ); mbedtls_mpi_init( &T1 ); mbedtls_mpi_init( &T2 ); mbedtls_mpi_init( &T ); mbedtls_mpi_init( &T1 ); mbedtls_mpi_init( &T2 );
mbedtls_mpi_init( &P1 ); mbedtls_mpi_init( &Q1 ); mbedtls_mpi_init( &R ); mbedtls_mpi_init( &P1 ); mbedtls_mpi_init( &Q1 ); mbedtls_mpi_init( &R );
if( f_rng != NULL ) if( f_rng != NULL )
{ {
#if defined(MBEDTLS_RSA_NO_CRT) #if defined(MBEDTLS_RSA_NO_CRT)