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Only Weierstrass curves supported

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Signed-off-by: Przemyslaw Stekiel <przemyslaw.stekiel@mobica.com>
This commit is contained in:
Przemyslaw Stekiel 2021-11-24 08:47:29 +01:00
parent ab80c0cd6c
commit 705fb0f918
1 changed files with 5 additions and 2 deletions
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7
library/psa_crypto.c
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@ -27,6 +27,7 @@
#endif
#include "psa/crypto.h"
#include "psa/crypto_values.h"
#include "psa_crypto_cipher.h"
#include "psa_crypto_core.h"
@ -4825,7 +4826,8 @@ static void psa_des_set_key_parity( uint8_t *data, size_t data_size )
#endif /* MBEDTLS_PSA_BUILTIN_KEY_TYPE_DES */
/*
* ECC key types require the generation of a private key which is an integer
* ECC keys on a Weierstrass elliptic curve require the generation
* of a private key which is an integer
* in the range [1, N - 1], where N is the boundary of the private key domain:
* N is the prime p for Diffie-Hellman, or the order of the
* curve’s base point for ECC.
@ -4961,7 +4963,8 @@ static psa_status_t psa_generate_derived_key_internal(
defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_PUBLIC_KEY) || \
defined(MBEDTLS_PSA_ACCEL_KEY_TYPE_ECC_KEY_PAIR) || \
defined(MBEDTLS_PSA_ACCEL_KEY_TYPE_ECC_PUBLIC_KEY)
if ( PSA_KEY_TYPE_IS_ECC( slot->attr.type ) )
if ( PSA_KEY_TYPE_IS_ECC( slot->attr.type ) &&
PSA_KEY_TYPE_ECC_GET_FAMILY( slot->attr.type ) != PSA_ECC_FAMILY_MONTGOMERY )
{
unsigned key_err = 0;
gen_ecc_key: