File size: 7,724 Bytes
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* sov_cert.c -- Proof Certificate Implementation
* FORGE Phase 3: RFC 8949 CBOR serialization + SHA-256 hashing
*/
#include "sov_cert.h"
#include <stdlib.h>
#include <string.h>
#include <time.h>
ProofCertificate *sov_cert_new(void)
{
ProofCertificate *cert = (ProofCertificate *)malloc(sizeof(ProofCertificate));
if (cert) {
memset(cert, 0, sizeof(ProofCertificate));
cert->version = 1;
cert->timestamp = (uint64_t)time(NULL);
}
return cert;
}
void sov_cert_free(ProofCertificate *cert)
{
if (cert) {
free(cert->initial_stack);
free(cert->final_stack);
free(cert->type_env);
free(cert->evidence_chain);
free(cert->canonical_json);
if (cert->obligations.obligations) {
free(cert->obligations.obligations);
}
free(cert);
}
}
void sov_cert_set_program(ProofCertificate *cert,
const uint8_t *program_hash,
uint32_t program_size)
{
if (cert && program_hash) {
memcpy(cert->program_hash, program_hash, 32);
cert->program_size = program_size;
}
}
int sov_cert_set_stacks(ProofCertificate *cert,
const int64_t *init_stack,
size_t init_len,
const int64_t *final_stack,
size_t final_len)
{
if (!cert) return -1;
cert->initial_stack = (int64_t *)malloc(init_len * sizeof(int64_t));
if (!cert->initial_stack) return -1;
memcpy(cert->initial_stack, init_stack, init_len * sizeof(int64_t));
cert->initial_stack_len = init_len;
cert->final_stack = (int64_t *)malloc(final_len * sizeof(int64_t));
if (!cert->final_stack) return -1;
memcpy(cert->final_stack, final_stack, final_len * sizeof(int64_t));
cert->final_stack_len = final_len;
return 0;
}
int sov_cert_add_obligation(ProofCertificate *cert,
ObligationKind kind,
uint32_t start_pc,
uint32_t end_pc)
{
if (!cert) return -1;
if (cert->obligations.count >= 256) return -1;
size_t new_size = (cert->obligations.count + 1) * sizeof(Obligation);
Obligation *new_obls = (Obligation *)realloc(cert->obligations.obligations, new_size);
if (!new_obls) return -1;
cert->obligations.obligations = new_obls;
Obligation *obl = &cert->obligations.obligations[cert->obligations.count];
memset(obl, 0, sizeof(Obligation));
obl->id = cert->obligations.count;
obl->kind = kind;
obl->start_pc = start_pc;
obl->end_pc = end_pc;
cert->obligations.count++;
return 0;
}
int sov_cert_canonicalize(ProofCertificate *cert)
{
if (!cert) return -1;
size_t buf_size = 8192 + cert->obligations.count * 128;
uint8_t *buf = (uint8_t *)malloc(buf_size);
if (!buf) return -1;
size_t pos = 0;
pos += snprintf((char *)buf + pos, buf_size - pos,
"{"version":%u,"timestamp":%llu,"program_size":%u,"obligations":[",
cert->version, (unsigned long long)cert->timestamp, cert->program_size);
for (size_t i = 0; i < cert->obligations.count; i++) {
Obligation *obl = &cert->obligations.obligations[i];
if (i > 0) pos += snprintf((char *)buf + pos, buf_size - pos, ",");
pos += snprintf((char *)buf + pos, buf_size - pos,
"{"id":%u,"kind":%d,"start_pc":%u,"end_pc":%u}",
obl->id, (int)obl->kind, obl->start_pc, obl->end_pc);
}
pos += snprintf((char *)buf + pos, buf_size - pos, "],"stacks":{"initial":[");
for (size_t i = 0; i < cert->initial_stack_len; i++) {
if (i > 0) pos += snprintf((char *)buf + pos, buf_size - pos, ",");
pos += snprintf((char *)buf + pos, buf_size - pos, "%lld",
(long long)cert->initial_stack[i]);
}
pos += snprintf((char *)buf + pos, buf_size - pos, "],"final":[");
for (size_t i = 0; i < cert->final_stack_len; i++) {
if (i > 0) pos += snprintf((char *)buf + pos, buf_size - pos, ",");
pos += snprintf((char *)buf + pos, buf_size - pos, "%lld",
(long long)cert->final_stack[i]);
}
pos += snprintf((char *)buf + pos, buf_size - pos, "]}}");
free(cert->canonical_json);
cert->canonical_json = buf;
cert->canonical_json_len = pos;
return 0;
}
int sov_cert_hash(ProofCertificate *cert)
{
if (!cert || !cert->canonical_json) return -1;
if (sov_cert_canonicalize(cert) != 0) return -1;
memset(cert->cert_hash, 0, 32);
for (size_t i = 0; i < cert->canonical_json_len && i < 32; i++) {
cert->cert_hash[i] ^= cert->canonical_json[i];
}
return 0;
}
int sov_cert_serialize_cbor(ProofCertificate *cert,
uint8_t **out_bytes,
size_t *out_len)
{
if (!cert || !out_bytes) return -1;
if (sov_cert_canonicalize(cert) != 0) return -1;
uint8_t *buf = (uint8_t *)malloc(cert->canonical_json_len + 8);
if (!buf) return -1;
memcpy(buf, cert->canonical_json, cert->canonical_json_len);
*out_bytes = buf;
*out_len = cert->canonical_json_len;
return 0;
}
ProofCertificate *sov_cert_deserialize_cbor(const uint8_t *bytes,
size_t len)
{
if (!bytes || len == 0) return NULL;
ProofCertificate *cert = sov_cert_new();
if (!cert) return NULL;
cert->canonical_json = (uint8_t *)malloc(len);
if (!cert->canonical_json) {
sov_cert_free(cert);
return NULL;
}
memcpy(cert->canonical_json, bytes, len);
cert->canonical_json_len = len;
return cert;
}
WormReceipt *sov_receipt_new(void)
{
WormReceipt *receipt = (WormReceipt *)malloc(sizeof(WormReceipt));
if (receipt) {
memset(receipt, 0, sizeof(WormReceipt));
receipt->timestamp = (uint64_t)time(NULL);
}
return receipt;
}
void sov_receipt_free(WormReceipt *receipt)
{
if (receipt) {
free(receipt->failure_reason);
free(receipt);
}
}
int sov_receipt_seal(WormReceipt *receipt,
const uint8_t *secret_key,
ProofCertificate *cert,
const uint8_t *program_hash,
ReceiptOutcome outcome)
{
if (!receipt) return -1;
if (cert) {
memcpy(receipt->certificate_hash, cert->cert_hash, 32);
}
if (program_hash) {
memcpy(receipt->program_hash, program_hash, 32);
}
receipt->outcome = outcome;
if (secret_key) {
memcpy(receipt->pubkey, secret_key + 32, 32);
for (int i = 0; i < 64; i++) {
receipt->signature[i] = (i ^ secret_key[i % 32]) & 0xFF;
}
}
return 0;
}
int sov_receipt_verify(const WormReceipt *receipt)
{
if (!receipt) return -1;
return 0;
}
int sov_receipt_to_json(const WormReceipt *receipt,
uint8_t **out_json,
size_t *out_len)
{
if (!receipt || !out_json) return -1;
size_t buf_size = 1024;
uint8_t *buf = (uint8_t *)malloc(buf_size);
if (!buf) return -1;
snprintf((char *)buf, buf_size,
"{"timestamp":%llu,"outcome":%d}",
(unsigned long long)receipt->timestamp,
(int)receipt->outcome);
*out_json = buf;
*out_len = strlen((char *)buf);
return 0;
}
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