mirror of
https://github.com/yuzu-emu/mbedtls.git
synced 2024-11-22 16:45:41 +01:00
Merge remote-tracking branch 'restricted/pr/553' into mbedtls-2.16
* restricted/pr/553: Fix mbedtls_ecdh_get_params with new ECDH context Add changelog entry for mbedtls_ecdh_get_params robustness Fix ecdh_get_params with mismatching group Add test case for ecdh_get_params with mismatching group Add test case for ecdh_calc_secret Fix typo in documentation
This commit is contained in:
Jaeden Amero
commit
186c2c054d
@ -2,6 +2,14 @@ mbed TLS ChangeLog (Sorted per branch, date)
|
||||
|
||||
= mbed TLS 2.x.x branch released xxxx-xx-xx
|
||||
|
||||
Security
|
||||
* Make mbedtls_ecdh_get_params return an error if the second key
|
||||
belongs to a different group from the first. Before, if an application
|
||||
passed keys that belonged to different group, the first key's data was
|
||||
interpreted according to the second group, which could lead to either
|
||||
an error or a meaningless output from mbedtls_ecdh_get_params. In the
|
||||
latter case, this could expose at most 5 bits of the private key.
|
||||
|
||||
Bugfix
|
||||
* Server's RSA certificate in certs.c was SHA-1 signed. In the default
|
||||
mbedTLS configuration only SHA-2 signed certificates are accepted.
|
||||
|
||||
@ -482,7 +482,7 @@ void mbedtls_ecp_point_init( mbedtls_ecp_point *pt );
|
||||
*
|
||||
* \note After this function is called, domain parameters
|
||||
* for various ECP groups can be loaded through the
|
||||
* mbedtls_ecp_load() or mbedtls_ecp_tls_read_group()
|
||||
* mbedtls_ecp_group_load() or mbedtls_ecp_tls_read_group()
|
||||
* functions.
|
||||
*/
|
||||
void mbedtls_ecp_group_init( mbedtls_ecp_group *grp );
|
||||
|
||||
@ -49,6 +49,16 @@
|
||||
typedef mbedtls_ecdh_context mbedtls_ecdh_context_mbed;
|
||||
#endif
|
||||
|
||||
static mbedtls_ecp_group_id mbedtls_ecdh_grp_id(
|
||||
const mbedtls_ecdh_context *ctx )
|
||||
{
|
||||
#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT)
|
||||
return( ctx->grp.id );
|
||||
#else
|
||||
return( ctx->grp_id );
|
||||
#endif
|
||||
}
|
||||
|
||||
#if !defined(MBEDTLS_ECDH_GEN_PUBLIC_ALT)
|
||||
/*
|
||||
* Generate public key (restartable version)
|
||||
@ -442,8 +452,21 @@ int mbedtls_ecdh_get_params( mbedtls_ecdh_context *ctx,
|
||||
ECDH_VALIDATE_RET( side == MBEDTLS_ECDH_OURS ||
|
||||
side == MBEDTLS_ECDH_THEIRS );
|
||||
|
||||
if( ( ret = mbedtls_ecdh_setup( ctx, key->grp.id ) ) != 0 )
|
||||
return( ret );
|
||||
if( mbedtls_ecdh_grp_id( ctx ) == MBEDTLS_ECP_DP_NONE )
|
||||
{
|
||||
/* This is the first call to get_params(). Set up the context
|
||||
* for use with the group. */
|
||||
if( ( ret = mbedtls_ecdh_setup( ctx, key->grp.id ) ) != 0 )
|
||||
return( ret );
|
||||
}
|
||||
else
|
||||
{
|
||||
/* This is not the first call to get_params(). Check that the
|
||||
* current key's group is the same as the context's, which was set
|
||||
* from the first key's group. */
|
||||
if( mbedtls_ecdh_grp_id( ctx ) != key->grp.id )
|
||||
return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
|
||||
}
|
||||
|
||||
#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT)
|
||||
return( ecdh_get_params_internal( ctx, key, side ) );
|
||||
|
||||
@ -79,3 +79,19 @@ ecdh_restart:MBEDTLS_ECP_DP_SECP256R1:"C88F01F510D9AC3F70A292DAA2316DE544E9AAB8A
|
||||
ECDH exchange legacy context
|
||||
depends_on:MBEDTLS_ECP_DP_SECP192R1_ENABLED
|
||||
ecdh_exchange_legacy:MBEDTLS_ECP_DP_SECP192R1
|
||||
|
||||
ECDH calc_secret: ours first, SECP256R1 (RFC 5903)
|
||||
depends_on:MBEDTLS_ECP_DP_SECP256R1_ENABLED
|
||||
ecdh_exchange_calc_secret:MBEDTLS_ECP_DP_SECP256R1:"c6ef9c5d78ae012a011164acb397ce2088685d8f06bf9be0b283ab46476bee53":"04dad0b65394221cf9b051e1feca5787d098dfe637fc90b9ef945d0c37725811805271a0461cdb8252d61f1c456fa3e59ab1f45b33accf5f58389e0577b8990bb3":0:"d6840f6b42f6edafd13116e0e12565202fef8e9ece7dce03812464d04b9442de"
|
||||
|
||||
ECDH calc_secret: theirs first, SECP256R1 (RFC 5903)
|
||||
depends_on:MBEDTLS_ECP_DP_SECP256R1_ENABLED
|
||||
ecdh_exchange_calc_secret:MBEDTLS_ECP_DP_SECP256R1:"c6ef9c5d78ae012a011164acb397ce2088685d8f06bf9be0b283ab46476bee53":"04dad0b65394221cf9b051e1feca5787d098dfe637fc90b9ef945d0c37725811805271a0461cdb8252d61f1c456fa3e59ab1f45b33accf5f58389e0577b8990bb3":1:"d6840f6b42f6edafd13116e0e12565202fef8e9ece7dce03812464d04b9442de"
|
||||
|
||||
ECDH get_params with mismatched groups: our BP256R1, their SECP256R1
|
||||
depends_on:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_ECP_DP_BP256R1_ENABLED
|
||||
ecdh_exchange_get_params_fail:MBEDTLS_ECP_DP_BP256R1:"1234567812345678123456781234567812345678123456781234567812345678":MBEDTLS_ECP_DP_SECP256R1:"04dad0b65394221cf9b051e1feca5787d098dfe637fc90b9ef945d0c37725811805271a0461cdb8252d61f1c456fa3e59ab1f45b33accf5f58389e0577b8990bb3":0:MBEDTLS_ERR_ECP_BAD_INPUT_DATA
|
||||
|
||||
ECDH get_params with mismatched groups: their SECP256R1, our BP256R1
|
||||
depends_on:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_ECP_DP_BP256R1_ENABLED
|
||||
ecdh_exchange_get_params_fail:MBEDTLS_ECP_DP_BP256R1:"1234567812345678123456781234567812345678123456781234567812345678":MBEDTLS_ECP_DP_SECP256R1:"04dad0b65394221cf9b051e1feca5787d098dfe637fc90b9ef945d0c37725811805271a0461cdb8252d61f1c456fa3e59ab1f45b33accf5f58389e0577b8990bb3":1:MBEDTLS_ERR_ECP_BAD_INPUT_DATA
|
||||
|
||||
@ -1,5 +1,41 @@
|
||||
/* BEGIN_HEADER */
|
||||
#include "mbedtls/ecdh.h"
|
||||
|
||||
static int load_public_key( int grp_id, data_t *point,
|
||||
mbedtls_ecp_keypair *ecp )
|
||||
{
|
||||
int ok = 0;
|
||||
TEST_ASSERT( mbedtls_ecp_group_load( &ecp->grp, grp_id ) == 0 );
|
||||
TEST_ASSERT( mbedtls_ecp_point_read_binary( &ecp->grp,
|
||||
&ecp->Q,
|
||||
point->x,
|
||||
point->len ) == 0 );
|
||||
TEST_ASSERT( mbedtls_ecp_check_pubkey( &ecp->grp,
|
||||
&ecp->Q ) == 0 );
|
||||
ok = 1;
|
||||
exit:
|
||||
return( ok );
|
||||
}
|
||||
|
||||
static int load_private_key( int grp_id, data_t *private_key,
|
||||
mbedtls_ecp_keypair *ecp,
|
||||
rnd_pseudo_info *rnd_info )
|
||||
{
|
||||
int ok = 0;
|
||||
TEST_ASSERT( mbedtls_ecp_group_load( &ecp->grp, grp_id ) == 0 );
|
||||
TEST_ASSERT( mbedtls_mpi_read_binary( &ecp->d,
|
||||
private_key->x,
|
||||
private_key->len ) == 0 );
|
||||
TEST_ASSERT( mbedtls_ecp_check_privkey( &ecp->grp, &ecp->d ) == 0 );
|
||||
/* Calculate the public key from the private key. */
|
||||
TEST_ASSERT( mbedtls_ecp_mul( &ecp->grp, &ecp->Q, &ecp->d,
|
||||
&ecp->grp.G,
|
||||
&rnd_pseudo_rand, rnd_info ) == 0 );
|
||||
ok = 1;
|
||||
exit:
|
||||
return( ok );
|
||||
}
|
||||
|
||||
/* END_HEADER */
|
||||
|
||||
/* BEGIN_DEPENDENCIES
|
||||
@ -464,3 +500,107 @@ exit:
|
||||
mbedtls_ecdh_free( &cli );
|
||||
}
|
||||
/* END_CASE */
|
||||
|
||||
/* BEGIN_CASE */
|
||||
void ecdh_exchange_calc_secret( int grp_id,
|
||||
data_t *our_private_key,
|
||||
data_t *their_point,
|
||||
int ours_first,
|
||||
data_t *expected )
|
||||
{
|
||||
rnd_pseudo_info rnd_info;
|
||||
mbedtls_ecp_keypair our_key;
|
||||
mbedtls_ecp_keypair their_key;
|
||||
mbedtls_ecdh_context ecdh;
|
||||
unsigned char shared_secret[MBEDTLS_ECP_MAX_BYTES];
|
||||
size_t shared_secret_length = 0;
|
||||
|
||||
memset( &rnd_info, 0x00, sizeof( rnd_pseudo_info ) );
|
||||
mbedtls_ecdh_init( &ecdh );
|
||||
mbedtls_ecp_keypair_init( &our_key );
|
||||
mbedtls_ecp_keypair_init( &their_key );
|
||||
|
||||
if( ! load_private_key( grp_id, our_private_key, &our_key, &rnd_info ) )
|
||||
goto exit;
|
||||
if( ! load_public_key( grp_id, their_point, &their_key ) )
|
||||
goto exit;
|
||||
|
||||
/* Import the keys to the ECDH calculation. */
|
||||
if( ours_first )
|
||||
{
|
||||
TEST_ASSERT( mbedtls_ecdh_get_params(
|
||||
&ecdh, &our_key, MBEDTLS_ECDH_OURS ) == 0 );
|
||||
TEST_ASSERT( mbedtls_ecdh_get_params(
|
||||
&ecdh, &their_key, MBEDTLS_ECDH_THEIRS ) == 0 );
|
||||
}
|
||||
else
|
||||
{
|
||||
TEST_ASSERT( mbedtls_ecdh_get_params(
|
||||
&ecdh, &their_key, MBEDTLS_ECDH_THEIRS ) == 0 );
|
||||
TEST_ASSERT( mbedtls_ecdh_get_params(
|
||||
&ecdh, &our_key, MBEDTLS_ECDH_OURS ) == 0 );
|
||||
}
|
||||
|
||||
/* Perform the ECDH calculation. */
|
||||
TEST_ASSERT( mbedtls_ecdh_calc_secret(
|
||||
&ecdh,
|
||||
&shared_secret_length,
|
||||
shared_secret, sizeof( shared_secret ),
|
||||
&rnd_pseudo_rand, &rnd_info ) == 0 );
|
||||
TEST_ASSERT( shared_secret_length == expected->len );
|
||||
TEST_ASSERT( memcmp( expected->x, shared_secret,
|
||||
shared_secret_length ) == 0 );
|
||||
|
||||
exit:
|
||||
mbedtls_ecdh_free( &ecdh );
|
||||
mbedtls_ecp_keypair_free( &our_key );
|
||||
mbedtls_ecp_keypair_free( &their_key );
|
||||
}
|
||||
/* END_CASE */
|
||||
|
||||
/* BEGIN_CASE */
|
||||
void ecdh_exchange_get_params_fail( int our_grp_id,
|
||||
data_t *our_private_key,
|
||||
int their_grp_id,
|
||||
data_t *their_point,
|
||||
int ours_first,
|
||||
int expected_ret )
|
||||
{
|
||||
rnd_pseudo_info rnd_info;
|
||||
mbedtls_ecp_keypair our_key;
|
||||
mbedtls_ecp_keypair their_key;
|
||||
mbedtls_ecdh_context ecdh;
|
||||
|
||||
memset( &rnd_info, 0x00, sizeof( rnd_pseudo_info ) );
|
||||
mbedtls_ecdh_init( &ecdh );
|
||||
mbedtls_ecp_keypair_init( &our_key );
|
||||
mbedtls_ecp_keypair_init( &their_key );
|
||||
|
||||
if( ! load_private_key( our_grp_id, our_private_key, &our_key, &rnd_info ) )
|
||||
goto exit;
|
||||
if( ! load_public_key( their_grp_id, their_point, &their_key ) )
|
||||
goto exit;
|
||||
|
||||
if( ours_first )
|
||||
{
|
||||
TEST_ASSERT( mbedtls_ecdh_get_params(
|
||||
&ecdh, &our_key, MBEDTLS_ECDH_OURS ) == 0 );
|
||||
TEST_ASSERT( mbedtls_ecdh_get_params(
|
||||
&ecdh, &their_key, MBEDTLS_ECDH_THEIRS ) ==
|
||||
expected_ret );
|
||||
}
|
||||
else
|
||||
{
|
||||
TEST_ASSERT( mbedtls_ecdh_get_params(
|
||||
&ecdh, &their_key, MBEDTLS_ECDH_THEIRS ) == 0 );
|
||||
TEST_ASSERT( mbedtls_ecdh_get_params(
|
||||
&ecdh, &our_key, MBEDTLS_ECDH_OURS ) ==
|
||||
expected_ret );
|
||||
}
|
||||
|
||||
exit:
|
||||
mbedtls_ecdh_free( &ecdh );
|
||||
mbedtls_ecp_keypair_free( &our_key );
|
||||
mbedtls_ecp_keypair_free( &their_key );
|
||||
}
|
||||
/* END_CASE */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user