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Add EdDSA support as a conditional build.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
This commit is contained in:
Pol Henarejos
2025-02-21 20:20:43 +01:00
parent ef71ec6a29 26f9e0dd54
commit 21b6a7782a
18 changed files with 176 additions and 70 deletions
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19
src/hsm/sc_hsm.c
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@@ -661,7 +661,7 @@ int load_private_key_rsa(mbedtls_rsa_context *ctx, file_t *fkey) {
return PICOKEY_OK;
}
int load_private_key_ecdsa(mbedtls_ecdsa_context *ctx, file_t *fkey) {
int load_private_key_ec(mbedtls_ecp_keypair *ctx, file_t *fkey) {
if (wait_button_pressed() == true) { // timeout
return PICOKEY_VERIFICATION_FAILED;
}
@@ -676,17 +676,28 @@ int load_private_key_ecdsa(mbedtls_ecdsa_context *ctx, file_t *fkey) {
int r = mbedtls_ecp_read_key(gid, ctx, kdata + 1, key_size - 1);
if (r != 0) {
mbedtls_platform_zeroize(kdata, sizeof(kdata));
mbedtls_ecdsa_free(ctx);
mbedtls_ecp_keypair_free(ctx);
return PICOKEY_EXEC_ERROR;
}
mbedtls_platform_zeroize(kdata, sizeof(kdata));
r = mbedtls_ecp_mul(&ctx->grp, &ctx->Q, &ctx->d, &ctx->grp.G, random_gen, NULL);
#ifdef MBEDTLS_EDDSA_C
if (gid == MBEDTLS_ECP_DP_ED25519 || gid == MBEDTLS_ECP_DP_ED448) {
r = mbedtls_ecp_point_edwards(&ctx->grp, &ctx->Q, &ctx->d, random_gen, NULL);
}
else
#endif
{
r = mbedtls_ecp_mul(&ctx->grp, &ctx->Q, &ctx->d, &ctx->grp.G, random_gen, NULL);
}
if (r != 0) {
mbedtls_ecdsa_free(ctx);
mbedtls_ecp_keypair_free(ctx);
return PICOKEY_EXEC_ERROR;
}
return PICOKEY_OK;
}
int load_private_key_ecdh(mbedtls_ecp_keypair *ctx, file_t *fkey) {
return load_private_key_ec(ctx, fkey);
}
#define INS_VERIFY 0x20
#define INS_MSE 0x22