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Add ECDSA support to PSA crypto configuration

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Initial changes to PSA crypto core to support configuration
of ECDSA algorithm using PSA crypto configuration mechanism.
Guards using MBEDTLS_ECDSA_C and MBEDTLS_ECDSA_DETERMINISTIC have
been changed to be based off PSA_WANT_ALG_ECDSA and
PSA_WANT_ALG_ECDSA_DETERMINISTIC. Added new tests to all.sh to
confirm new settings are working properly. Current code does not
pass the tests since built in signature verification is not in place.

Signed-off-by: John Durkop <john.durkop@fermatsoftware.com>
This commit is contained in:
John Durkop 2020-09-20 23:09:17 -07:00
parent 7758c858ae
commit d8959390c5
3 changed files with 61 additions and 10 deletions
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17
include/mbedtls/config_psa.h
View File

@ -32,6 +32,23 @@
extern "C" {
#endif
//#define PSA_WANT_ALG_ECDSA
//#define MBEDTLS_PSA_ACCEL_ALG_ECDSA
//#define PSA_WANT_ALG_ECDSA_DETERMINISTIC
//#define MBEDTLS_PSA_ACCEL_ALG_ECDSA_DETERMINISTIC
#if defined(PSA_WANT_ALG_ECDSA) && !defined(MBEDTLS_PSA_ACCEL_ALG_ECDSA)
#define MBEDTLS_PSA_BUILTIN_ALG_ECDSA
#else /* defined(PSA_WANT_ALG_ECDSA) && !defined(MBEDTLS_PSA_ACCEL_ALG_ECDSA)*/
#define MBEDTLS_ECDSA_C
#endif /* defined(PSA_WANT_ALG_ECDSA) && !defined(MBEDTLS_PSA_ACCEL_ALG_ECDSA)*/
#if defined(PSA_WANT_ALG_DETERMINISTIC_ECDSA) && !defined(MBEDTLS_PSA_ACCEL_ALG_ECDSA_DETERMINISTIC)
#define MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA
#else /* defined(PSA_WANT_ALG_DETERMINISTIC_ECDSA) && !defined(MBEDTLS_PSA_ACCEL_ALG_ECDSA_DETERMINISTIC) */
#define MBEDTLS_ECDSA_DETERMINISTIC
#endif /* defined(PSA_WANT_ALG_DETERMINISTIC_ECDSA) && !defined(MBEDTLS_PSA_ACCEL_ALG_ECDSA_DETERMINISTIC) */
#ifdef __cplusplus
}
#endif

20
library/psa_crypto.c
View File

@ -2256,7 +2256,7 @@ exit:
/* Message digests */
/****************************************************************/
#if defined(MBEDTLS_RSA_C) || defined(MBEDTLS_ECDSA_DETERMINISTIC)
#if defined(MBEDTLS_RSA_C) || defined(PSA_WANT_ALG_ECDSA_DETERMINISTIC)
static const mbedtls_md_info_t *mbedtls_md_info_from_psa( psa_algorithm_t alg )
{
switch( alg )
@ -3530,7 +3530,7 @@ static psa_status_t psa_rsa_verify( mbedtls_rsa_context *rsa,
}
#endif /* MBEDTLS_RSA_C */
#if defined(MBEDTLS_ECDSA_C)
#if defined(PSA_WANT_ALG_ECDSA)
/* `ecp` cannot be const because `ecp->grp` needs to be non-const
* for mbedtls_ecdsa_sign() and mbedtls_ecdsa_sign_det()
* (even though these functions don't modify it). */
@ -3554,7 +3554,7 @@ static psa_status_t psa_ecdsa_sign( mbedtls_ecp_keypair *ecp,
goto cleanup;
}
#if defined(MBEDTLS_ECDSA_DETERMINISTIC)
#if defined(PSA_WANT_ALG_ECDSA_DETERMINISTIC)
if( PSA_ALG_DSA_IS_DETERMINISTIC( alg ) )
{
psa_algorithm_t hash_alg = PSA_ALG_SIGN_GET_HASH( alg );
@ -3567,7 +3567,7 @@ static psa_status_t psa_ecdsa_sign( mbedtls_ecp_keypair *ecp,
&global_data.ctr_drbg ) );
}
else
#endif /* MBEDTLS_ECDSA_DETERMINISTIC */
#endif /* PSA_WANT_ALG_ECDSA_DETERMINISTIC */
{
(void) alg;
MBEDTLS_MPI_CHK( mbedtls_ecdsa_sign( &ecp->grp, &r, &s, &ecp->d,
@ -3629,7 +3629,7 @@ cleanup:
mbedtls_mpi_free( &s );
return( mbedtls_to_psa_error( ret ) );
}
#endif /* MBEDTLS_ECDSA_C */
#endif /* PSA_WANT_ALG_ECDSA */
psa_status_t psa_sign_hash( psa_key_handle_t handle,
psa_algorithm_t alg,
@ -3698,9 +3698,9 @@ psa_status_t psa_sign_hash( psa_key_handle_t handle,
#if defined(MBEDTLS_ECP_C)
if( PSA_KEY_TYPE_IS_ECC( slot->attr.type ) )
{
#if defined(MBEDTLS_ECDSA_C)
#if defined(PSA_WANT_ALG_ECDSA)
if(
#if defined(MBEDTLS_ECDSA_DETERMINISTIC)
#if defined(PSA_WANT_ALG_ECDSA_DETERMINISTIC)
PSA_ALG_IS_ECDSA( alg )
#else
PSA_ALG_IS_RANDOMIZED_ECDSA( alg )
@ -3723,7 +3723,7 @@ psa_status_t psa_sign_hash( psa_key_handle_t handle,
mbedtls_free( ecp );
}
else
#endif /* defined(MBEDTLS_ECDSA_C) */
#endif /* defined(PSA_WANT_ALG_ECDSA) */
{
status = PSA_ERROR_INVALID_ARGUMENT;
}
@ -3799,7 +3799,7 @@ psa_status_t psa_verify_hash( psa_key_handle_t handle,
#if defined(MBEDTLS_ECP_C)
if( PSA_KEY_TYPE_IS_ECC( slot->attr.type ) )
{
#if defined(MBEDTLS_ECDSA_C)
#if defined(PSA_WANT_ALG_ECDSA)
if( PSA_ALG_IS_ECDSA( alg ) )
{
mbedtls_ecp_keypair *ecp = NULL;
@ -3817,7 +3817,7 @@ psa_status_t psa_verify_hash( psa_key_handle_t handle,
return( status );
}
else
#endif /* defined(MBEDTLS_ECDSA_C) */
#endif /* defined(PSA_WANT_ALG_ECDSA) */
{
return( PSA_ERROR_INVALID_ARGUMENT );
}

34
tests/scripts/all.sh
View File

@ -1290,6 +1290,40 @@ component_test_no_use_psa_crypto_full_cmake_asan() {
if_build_succeeded env OPENSSL_CMD="$OPENSSL_NEXT" tests/compat.sh -e '^$' -f 'ARIA\|CHACHA'
}
component_test_psa_crypto_config_basic() {
# full plus MBEDTLS_PSA_CRYPTO_CONFIG, MBEDTLS_PSA_CRYPTO_DRIVERS,
# and PSA_CRYPTO_DRIVER_TEST minus MBEDTLS_USE_PSA_CRYPTO
msg "build: full config plus MBEDTLS_PSA_CRYPTO_CONFIG MBEDTLS_PSA_CRYPTO_DRIVERS"
msg "build: minus MBEDTLS_USE_PSA_CRYPTO"
scripts/config.py full
scripts/config.py set MBEDTLS_PSA_CRYPTO_CONFIG
scripts/config.py set MBEDTLS_PSA_CRYPTO_DRIVERS
scripts/config.py unset MBEDTLS_USE_PSA_CRYPTO
# Need to define the correct symbol and include the test driver header path in order to build with the test driver
make CC=gcc CFLAGS="$ASAN_CFLAGS -DPSA_CRYPTO_DRIVER_TEST -I../tests/include -O2" LDFLAGS="$ASAN_CFLAGS"
msg "test: psa crypto config basic"
make test
}
component_test_psa_crypto_config_want_ecdsa() {
# full plus MBEDTLS_PSA_CRYPTO_CONFIG, MBEDTLS_PSA_CRYPTO_DRIVERS,
# and PSA_CRYPTO_DRIVER_TEST minus MBEDTLS_USE_PSA_CRYPTO
msg "build: full config plus MBEDTLS_PSA_CRYPTO_CONFIG, MBEDTLS_PSA_CRYPTO_DRIVERS,"
msg "build: PSA_CRYPTO_DRIVER_TEST, MBEDTLS_PSA_ACCEL_ALG_ECDSA,"
msg "build: PSA_WANT_ALG_ECDSA minus MBEDTLS_USE_PSA_CRYPTO"
scripts/config.py full
scripts/config.py set MBEDTLS_PSA_CRYPTO_CONFIG
scripts/config.py set MBEDTLS_PSA_CRYPTO_DRIVERS
scripts/config.py unset MBEDTLS_USE_PSA_CRYPTO
scripts/config.py unset MBEDTLS_ECDSA_C
# Need to define the correct symbol and include the test driver header path in order to build with the test driver
make CC=gcc CFLAGS="$ASAN_CFLAGS -DMBEDTLS_PSA_ACCEL_ALG_ECDSA -DPSA_WANT_ALG_ECDSA -DPSA_CRYPTO_DRIVER_TEST -I../tests/include -O2" LDFLAGS="$ASAN_CFLAGS"
msg "test: psa crypto config want ECDSA"
make test
}
component_test_check_params_functionality () {
msg "build+test: MBEDTLS_CHECK_PARAMS functionality"
scripts/config.py full # includes CHECK_PARAMS