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Built-in lms driver:Check return values of Merkle node creation

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Signed-off-by: Minos Galanakis <minos.galanakis@arm.com>
This commit is contained in:
Minos Galanakis 2025-06-02 14:33:47 +01:00
parent caaffc1e7e
commit ae449bfca5
1 changed files with 10 additions and 4 deletions
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12
library/lms.c
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@ -374,12 +374,16 @@ int mbedtls_lms_verify(const mbedtls_lms_public_t *ctx,
return MBEDTLS_ERR_LMS_VERIFY_FAILED; return MBEDTLS_ERR_LMS_VERIFY_FAILED;
} }
create_merkle_leaf_value( ret = create_merkle_leaf_value(
&ctx->params, &ctx->params,
Kc_candidate_ots_pub_key, Kc_candidate_ots_pub_key,
MERKLE_TREE_INTERNAL_NODE_AM(ctx->params.type) + q_leaf_identifier, MERKLE_TREE_INTERNAL_NODE_AM(ctx->params.type) + q_leaf_identifier,
Tc_candidate_root_node); Tc_candidate_root_node);
if (ret != 0) {
return MBEDTLS_ERR_LMS_VERIFY_FAILED;
}
curr_node_id = MERKLE_TREE_INTERNAL_NODE_AM(ctx->params.type) + curr_node_id = MERKLE_TREE_INTERNAL_NODE_AM(ctx->params.type) +
q_leaf_identifier; q_leaf_identifier;
@ -398,9 +402,11 @@ int mbedtls_lms_verify(const mbedtls_lms_public_t *ctx,
height * MBEDTLS_LMS_M_NODE_BYTES(ctx->params.type); height * MBEDTLS_LMS_M_NODE_BYTES(ctx->params.type);
} }
create_merkle_internal_value(&ctx->params, left_node, right_node, ret = create_merkle_internal_value(&ctx->params, left_node, right_node,
parent_node_id, Tc_candidate_root_node); parent_node_id, Tc_candidate_root_node);
if (ret != 0) {
return MBEDTLS_ERR_LMS_VERIFY_FAILED;
}
curr_node_id /= 2; curr_node_id /= 2;
} }