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Add support for Edwards key generation.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
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Pol Henarejos 2023-08-24 16:04:45 +02:00
parent 5e801fbae7
commit e67a7091ff
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GPG key ID: C0095B7870A4CCD3
1 changed files with 14 additions and 1 deletions
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15
src/hsm/cmd_keypair_gen.c
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@ -86,10 +86,23 @@ int cmd_keypair_gen() {
return SW_WRONG_DATA();
}
mbedtls_ecp_group_id ec_id = ec_get_curve_from_prime(prime, prime_len);
printf("KEYPAIR ECC %d\r\n", ec_id);
if (ec_id == MBEDTLS_ECP_DP_NONE) {
return SW_FUNC_NOT_SUPPORTED();
}
if (ec_id == MBEDTLS_ECP_DP_CURVE25519 || ec_id == MBEDTLS_ECP_DP_CURVE448) {
size_t g_len = 0;
uint8_t *g = NULL;
if (asn1_find_tag(p, tout, 0x83, &g_len, &g) != true) {
return SW_WRONG_DATA();
}
if (ec_id == MBEDTLS_ECP_DP_CURVE25519 && (g[0] != 9)) {
ec_id = MBEDTLS_ECP_DP_ED25519;
}
else if (ec_id == MBEDTLS_ECP_DP_CURVE448 && (g_len != 56 || g[0] != 5)) {
ec_id = MBEDTLS_ECP_DP_ED448;
}
}
printf("KEYPAIR ECC %d\r\n", ec_id);
mbedtls_ecdsa_context ecdsa;
mbedtls_ecdsa_init(&ecdsa);
uint8_t index = 0;