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Add support for EdDSA with Ed448 curve.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
This commit is contained in:
Pol Henarejos
2025-05-12 16:06:37 +02:00
parent c39b87019e
commit bc9681e7b0
3 changed files with 23 additions and 17 deletions
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9
src/openpgp/openpgp.c
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@@ -574,7 +574,7 @@ int load_private_key_ecdsa(mbedtls_ecp_keypair *ctx, file_t *fkey, bool use_dek)
}
mbedtls_platform_zeroize(kdata, sizeof(kdata));
#ifdef MBEDTLS_EDDSA_C
if (ctx->grp.id == MBEDTLS_ECP_DP_ED25519) {
if (ctx->grp.id == MBEDTLS_ECP_DP_ED25519 || ctx->grp.id == MBEDTLS_ECP_DP_ED448) {
r = mbedtls_ecp_point_edwards(&ctx->grp, &ctx->Q, &ctx->d, random_gen, NULL);
}
else
@@ -630,6 +630,9 @@ mbedtls_ecp_group_id get_ec_group_id_from_attr(const uint8_t *algo, size_t algo_
else if (memcmp(algorithm_attr_ed25519 + 2, algo, algo_len) == 0) {
return MBEDTLS_ECP_DP_ED25519;
}
else if (memcmp(algorithm_attr_ed448 + 2, algo, algo_len) == 0) {
return MBEDTLS_ECP_DP_ED448;
}
#endif
return MBEDTLS_ECP_DP_NONE;
}
@@ -750,8 +753,8 @@ int ecdsa_sign(mbedtls_ecp_keypair *ctx,
int r = 0;
#ifdef MBEDTLS_EDDSA_C
if (ctx->grp.id == MBEDTLS_ECP_DP_ED25519) {
r = mbedtls_eddsa_write_signature(ctx, data, data_len, out, 64, out_len, MBEDTLS_EDDSA_PURE, NULL, 0, random_gen, NULL);
if (ctx->grp.id == MBEDTLS_ECP_DP_ED25519 || ctx->grp.id == MBEDTLS_ECP_DP_ED448) {
r = mbedtls_eddsa_write_signature(ctx, data, data_len, out, 114, out_len, MBEDTLS_EDDSA_PURE, NULL, 0, random_gen, NULL);
}
else
#endif