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DCIPs/assets/eip-6404/tests/normalized/verify_proofs.c

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// Only one proof is verified at a time - create with `create_proofs.py`
// TRANSACTION, AMOUNT, SENDER, INFO
#define PROOF_TYPE INFO
// 0, 1, 2, 3, 4
#define PROOF_INDEX 4
/*******************************************************************************
prj.conf:
CONFIG_NRF_OBERON=y
CONFIG_TIMING_FUNCTIONS=y
CMakeLists.txt:
target_link_libraries(app PRIVATE nrfxlib_crypto)
*******************************************************************************/
#include <stdint.h>
#include <string.h>
#include <zephyr/kernel.h>
#include <zephyr/timing/timing.h>
#include <ocrypto_sha256.h>
#if DEBUG
#define debug(...) printk(__VA_ARGS__)
#else
#define debug(...) (void) 0
#endif
#define array_count(array) ((size_t)(sizeof(array) / sizeof((array)[0])))
#define TX_DEPTH (20)
#define MAX_TRANSACTIONS_PER_PAYLOAD ((uint32_t) 1 << TX_DEPTH)
typedef uint8_t Bytes20[20];
typedef uint8_t Bytes32[32];
typedef Bytes20 ExecutionAddress;
typedef Bytes32 Hash32;
typedef Bytes32 Root;
typedef enum __attribute__((packed)) {
DESTINATION_TYPE_REGULAR = 0x00,
DESTINATION_TYPE_CREATE = 0x01
} DestinationType;
typedef struct {
DestinationType destination_type;
ExecutionAddress address;
} DestinationAddress;
typedef struct {
Bytes32 max_priority_fee_per_gas;
Bytes32 max_fee_per_gas;
uint64_t gas;
} TransactionLimits;
typedef struct {
uint32_t tx_index;
Hash32 tx_hash;
ExecutionAddress tx_from;
uint64_t nonce;
DestinationAddress tx_to;
Bytes32 tx_value;
TransactionLimits limits;
} TransactionInfo;
static const Root zero_hash[] = {
{0}
};
typedef struct {
Bytes32 chain_id;
} ExecutionConfig;
static void hash_combine(Root *root, const Root *a, const Root *b)
{
ocrypto_sha256_ctx ctx;
ocrypto_sha256_init(&ctx);
ocrypto_sha256_update(&ctx, &(*a)[0], sizeof *a);
ocrypto_sha256_update(&ctx, &(*b)[0], sizeof *b);
ocrypto_sha256_final(&ctx, &(*root)[0]);
}
#define consume(n) \
do { \
proof = (const uint8_t *) proof + (n); \
num_proof_bytes -= (n); \
} while (0)
__attribute__((warn_unused_result))
static int verify_transaction_proof(
const void *proof,
size_t num_proof_bytes,
const ExecutionConfig *cfg __attribute__((unused)),
const Root *transactions_root,
const Root *expected_tx_hash)
{
Root root;
// payload_root
const Root *payload_root = proof;
if (num_proof_bytes < sizeof *payload_root) return 1;
if (memcmp(payload_root, expected_tx_hash, sizeof *payload_root)) return 1;
consume(sizeof *payload_root);
// tx_hash
const Root *tx_hash = proof;
if (num_proof_bytes < sizeof *tx_hash) return 1;
consume(sizeof *tx_hash);
// transaction_root
hash_combine(&root, payload_root, tx_hash);
// tx_index
const uint32_t *tx_index = proof;
if (num_proof_bytes < sizeof *tx_index) return 1;
if (*tx_index >= MAX_TRANSACTIONS_PER_PAYLOAD) return 1;
consume(sizeof *tx_index);
// transactions_root
const Root *tx_branch = proof;
if (num_proof_bytes < (1 + TX_DEPTH) * sizeof *tx_branch) return 1;
for (int i = 0; i < TX_DEPTH; i++) {
if (*tx_index & ((uint32_t) 1 << i))
hash_combine(&root, tx_branch, &root);
else
hash_combine(&root, &root, tx_branch);
tx_branch++;
}
hash_combine(&root, &root, tx_branch);
if (memcmp(&root, transactions_root, sizeof root)) return 1;
consume((1 + TX_DEPTH) * sizeof *tx_branch);
if (num_proof_bytes) return 1;
return 0;
}
__attribute__((warn_unused_result))
static int verify_amount_proof(
const void *proof,
size_t num_proof_bytes,
const ExecutionConfig *cfg __attribute__((unused)),
const Root *transactions_root,
const ExecutionAddress *expected_tx_to,
const Bytes32 *expected_tx_value_min)
{
Root root, scratch[2];
// tx_from
const ExecutionAddress *tx_from = proof;
if (num_proof_bytes < sizeof *tx_from) return 1;
consume(sizeof *tx_from);
// nonce
const uint64_t *nonce = proof;
if (num_proof_bytes < sizeof *nonce) return 1;
consume(sizeof *nonce);
// tx_to.destination_type
const uint8_t *destination_type = proof;
if (num_proof_bytes < sizeof *destination_type) return 1;
if (*destination_type != DESTINATION_TYPE_REGULAR) return 1;
consume(sizeof *destination_type);
// tx_to.address
const ExecutionAddress *addr = proof;
if (num_proof_bytes < sizeof *addr) return 1;
if (memcmp(addr, expected_tx_to, sizeof *addr)) return 1;
consume(sizeof *addr);
// tx_value
const Bytes32 *tx_value = proof;
if (num_proof_bytes < sizeof *tx_value) return 1;
for (int i = sizeof *tx_value - 1; i >= 0; i--) {
if ((*tx_value)[i] > (*expected_tx_value_min)[i]) break;
if ((*tx_value)[i] < (*expected_tx_value_min)[i]) return 1;
}
consume(sizeof *tx_value);
// multi_branch
const Root *multi_branch = proof;
if (num_proof_bytes < 2 * sizeof *multi_branch) return 1;
consume(2 * sizeof *multi_branch);
// payload_root
/* 16 */ memcpy(&root[0], tx_from, 20); memset(&root[20], 0, 12);
/* 17 */ memcpy(&scratch[0][0], nonce, 8); memset(&scratch[0][8], 0, 24);
/* 8 */ hash_combine(&root, &root, &scratch[0]);
/* 36 */ scratch[0][0] = DESTINATION_TYPE_REGULAR;
/* */ memset(&scratch[0][1], 0, 31);
/* 37 */ memcpy(&scratch[1][0], addr, 20); memset(&scratch[1][20], 0, 12);
/* 18 */ hash_combine(&scratch[0], &scratch[0], &scratch[1]);
/* 9 */ hash_combine(&scratch[0], &scratch[0], tx_value);
/* 4 */ hash_combine(&root, &root, &scratch[0]);
/* 2 */ hash_combine(&root, &root, &multi_branch[0]);
/* 1 */ hash_combine(&root, &root, &multi_branch[1]);
// tx_hash
const Root *tx_hash = proof;
if (num_proof_bytes < sizeof *tx_hash) return 1;
consume(sizeof *tx_hash);
// transaction_root
hash_combine(&root, &root, tx_hash);
// tx_index
const uint32_t *tx_index = proof;
if (num_proof_bytes < sizeof *tx_index) return 1;
if (*tx_index >= MAX_TRANSACTIONS_PER_PAYLOAD) return 1;
consume(sizeof *tx_index);
// transactions_root
const Root *tx_branch = proof;
if (num_proof_bytes < (1 + TX_DEPTH) * sizeof *tx_branch) return 1;
for (int i = 0; i < TX_DEPTH; i++) {
if (*tx_index & ((uint32_t) 1 << i))
hash_combine(&root, tx_branch, &root);
else
hash_combine(&root, &root, tx_branch);
tx_branch++;
}
hash_combine(&root, &root, tx_branch);
if (memcmp(&root, transactions_root, sizeof root)) return 1;
consume((1 + TX_DEPTH) * sizeof *tx_branch);
if (num_proof_bytes) return 1;
return 0;
}
__attribute__((warn_unused_result))
static int verify_sender_proof(
const void *proof,
size_t num_proof_bytes,
const ExecutionConfig *cfg __attribute__((unused)),
const Root *transactions_root,
const ExecutionAddress *expected_tx_to,
const Bytes32 *expected_tx_value_min,
ExecutionAddress *tx_from)
{
Root root, scratch[2];
// tx_from
const ExecutionAddress *tx_from_ = proof;
if (num_proof_bytes < sizeof *tx_from_) return 1;
memcpy(tx_from, tx_from_, sizeof *tx_from_);
consume(sizeof *tx_from_);
// nonce
const uint64_t *nonce = proof;
if (num_proof_bytes < sizeof *nonce) return 1;
consume(sizeof *nonce);
// tx_to.destination_type
const uint8_t *destination_type = proof;
if (num_proof_bytes < sizeof *destination_type) return 1;
if (*destination_type != DESTINATION_TYPE_REGULAR) return 1;
consume(sizeof *destination_type);
// tx_to.address
const ExecutionAddress *addr = proof;
if (num_proof_bytes < sizeof *addr) return 1;
if (memcmp(addr, expected_tx_to, sizeof *addr)) return 1;
consume(sizeof *addr);
// tx_value
const Bytes32 *tx_value = proof;
if (num_proof_bytes < sizeof *tx_value) return 1;
for (int i = sizeof *tx_value - 1; i >= 0; i--) {
if ((*tx_value)[i] > (*expected_tx_value_min)[i]) break;
if ((*tx_value)[i] < (*expected_tx_value_min)[i]) return 1;
}
consume(sizeof *tx_value);
// multi_branch
const Root *multi_branch = proof;
if (num_proof_bytes < 2 * sizeof *multi_branch) return 1;
consume(2 * sizeof *multi_branch);
// payload_root
/* 16 */ memcpy(&root[0], tx_from, 20); memset(&root[20], 0, 12);
/* 17 */ memcpy(&scratch[0][0], nonce, 8); memset(&scratch[0][8], 0, 24);
/* 8 */ hash_combine(&root, &root, &scratch[0]);
/* 36 */ scratch[0][0] = DESTINATION_TYPE_REGULAR;
/* */ memset(&scratch[0][1], 0, 31);
/* 37 */ memcpy(&scratch[1][0], addr, 20); memset(&scratch[1][20], 0, 12);
/* 18 */ hash_combine(&scratch[0], &scratch[0], &scratch[1]);
/* 9 */ hash_combine(&scratch[0], &scratch[0], tx_value);
/* 4 */ hash_combine(&root, &root, &scratch[0]);
/* 2 */ hash_combine(&root, &root, &multi_branch[0]);
/* 1 */ hash_combine(&root, &root, &multi_branch[1]);
// tx_hash
const Root *tx_hash = proof;
if (num_proof_bytes < sizeof *tx_hash) return 1;
consume(sizeof *tx_hash);
// transaction_root
hash_combine(&root, &root, tx_hash);
// tx_index
const uint32_t *tx_index = proof;
if (num_proof_bytes < sizeof *tx_index) return 1;
if (*tx_index >= MAX_TRANSACTIONS_PER_PAYLOAD) return 1;
consume(sizeof *tx_index);
// transactions_root
const Root *tx_branch = proof;
if (num_proof_bytes < (1 + TX_DEPTH) * sizeof *tx_branch) return 1;
for (int i = 0; i < TX_DEPTH; i++) {
if (*tx_index & ((uint32_t) 1 << i))
hash_combine(&root, tx_branch, &root);
else
hash_combine(&root, &root, tx_branch);
tx_branch++;
}
hash_combine(&root, &root, tx_branch);
if (memcmp(&root, transactions_root, sizeof root)) return 1;
consume((1 + TX_DEPTH) * sizeof *tx_branch);
if (num_proof_bytes) return 1;
return 0;
}
__attribute__((warn_unused_result))
static int verify_info_proof(
const void *proof,
size_t num_proof_bytes,
const ExecutionConfig *cfg __attribute__((unused)),
const Root *transactions_root,
TransactionInfo *info)
{
memset(info, 0, sizeof *info);
Root root, scratch[2];
// tx_from
const ExecutionAddress *tx_from = proof;
if (num_proof_bytes < sizeof *tx_from) return 1;
memcpy(info->tx_from, tx_from, sizeof *tx_from);
consume(sizeof *tx_from);
// nonce
const uint64_t *nonce = proof;
if (num_proof_bytes < sizeof *nonce) return 1;
info->nonce = *nonce;
consume(sizeof *nonce);
// tx_to.destination_type
const uint8_t *destination_type = proof;
if (num_proof_bytes < sizeof *destination_type) return 1;
if (*destination_type > 1) return 1;
info->tx_to.destination_type = *destination_type;
consume(sizeof *destination_type);
// tx_to.address
const ExecutionAddress *addr = proof;
if (num_proof_bytes < sizeof *addr) return 1;
memcpy(info->tx_to.address, addr, sizeof *addr);
consume(sizeof *addr);
// tx_value
const Bytes32 *tx_value = proof;
if (num_proof_bytes < sizeof *tx_value) return 1;
memcpy(info->tx_value, tx_value, sizeof *tx_value);
consume(sizeof *tx_value);
// limits.max_priority_fee_per_gas
const Bytes32 *max_prio = proof;
if (num_proof_bytes < sizeof *max_prio) return 1;
memcpy(info->limits.max_priority_fee_per_gas, max_prio, sizeof *max_prio);
consume(sizeof *max_prio);
// limits.max_fee_per_gas
const Bytes32 *max_fee = proof;
if (num_proof_bytes < sizeof *max_fee) return 1;
memcpy(info->limits.max_fee_per_gas, max_fee, sizeof *max_fee);
consume(sizeof *max_fee);
// limits.gas
const uint64_t *gas = proof;
if (num_proof_bytes < sizeof *gas) return 1;
info->limits.gas = *gas;
consume(sizeof *gas);
// multi_branch
const Root *multi_branch = proof;
if (num_proof_bytes < 3 * sizeof *multi_branch) return 1;
consume(3 * sizeof *multi_branch);
// payload_root
/* 16 */ memcpy(&root[0], tx_from, 20); memset(&root[20], 0, 12);
/* 17 */ memcpy(&scratch[0][0], nonce, 8); memset(&scratch[0][8], 0, 24);
/* 8 */ hash_combine(&root, &root, &scratch[0]);
/* 36 */ scratch[0][0] = *destination_type;
/* */ memset(&scratch[0][1], 0, 31);
/* 37 */ memcpy(&scratch[1][0], addr, 20); memset(&scratch[1][20], 0, 12);
/* 18 */ hash_combine(&scratch[0], &scratch[0], &scratch[1]);
/* 9 */ hash_combine(&scratch[0], &scratch[0], tx_value);
/* 4 */ hash_combine(&root, &root, &scratch[0]);
/* 42 */ hash_combine(&scratch[0], max_prio, max_fee);
/* 86 */ memcpy(&scratch[1][0], gas, 8); memset(&scratch[1][8], 0, 24);
/* 43 */ hash_combine(&scratch[1], &scratch[1], &zero_hash[0]);
/* 21 */ hash_combine(&scratch[0], &scratch[0], &scratch[1]);
/* 10 */ hash_combine(&scratch[0], &multi_branch[0], &scratch[0]);
/* 5 */ hash_combine(&scratch[0], &scratch[0], &multi_branch[1]);
/* 2 */ hash_combine(&root, &root, &scratch[0]);
/* 1 */ hash_combine(&root, &root, &multi_branch[2]);
// tx_hash
const Root *tx_hash = proof;
if (num_proof_bytes < sizeof *tx_hash) return 1;
memcpy(info->tx_hash, tx_hash, sizeof *tx_hash);
consume(sizeof *tx_hash);
// transaction_root
hash_combine(&root, &root, &info->tx_hash);
// tx_index
const uint32_t *tx_index = proof;
if (num_proof_bytes < sizeof *tx_index) return 1;
if (*tx_index >= MAX_TRANSACTIONS_PER_PAYLOAD) return 1;
info->tx_index = *tx_index;
consume(sizeof *tx_index);
// transactions_root
const Root *tx_branch = proof;
if (num_proof_bytes < (1 + TX_DEPTH) * sizeof *tx_branch) return 1;
for (int i = 0; i < TX_DEPTH; i++) {
if (*tx_index & ((uint32_t) 1 << i))
hash_combine(&root, tx_branch, &root);
else
hash_combine(&root, &root, tx_branch);
tx_branch++;
}
hash_combine(&root, &root, tx_branch);
if (memcmp(&root, transactions_root, sizeof root)) return 1;
consume((1 + TX_DEPTH) * sizeof *tx_branch);
if (num_proof_bytes) return 1;
return 0;
}
////////////////////////////////////////////////////////////////////////////////
#define STR(x) #x
#define QUOTE(x) STR(x)
__asm__ (
".section .rodata\n"
".global transactions_root\n"
"transactions_root:\n"
".incbin \"proofs/transactions_root.ssz\"\n"
".global proof\n"
"proof:\n"
".incbin \"proofs/" QUOTE(PROOF_TYPE) "_" QUOTE(PROOF_INDEX) ".ssz\"\n"
".global num_proof_bytes\n"
".set num_proof_bytes, . - proof\n"
".section .text\n"
);
extern const uint8_t transactions_root[];
extern const uint8_t proof[];
extern const uint8_t num_proof_bytes[];
const ExecutionConfig cfg = {
.chain_id = {
0x39, 0x05
}
};
typedef enum {
NIL,
TRANSACTION,
AMOUNT,
SENDER,
INFO
} proof_type;
void main(void)
{
k_msleep(1000);
printk("Normalized %s_%s (%zu bytes)\n",
QUOTE(PROOF_TYPE), QUOTE(PROOF_INDEX), (size_t) num_proof_bytes);
timing_init();
timing_start();
timing_t start_time, end_time;
switch (PROOF_TYPE) {
case NIL: {
} break;
case TRANSACTION: {
const Root *expected_tx_hash = (const Root *) &proof[0];
start_time = timing_counter_get();
if (verify_transaction_proof(
proof, (size_t) num_proof_bytes,
&cfg, (const Root *) transactions_root,
expected_tx_hash))
{
printk("ERROR\n");
break;
}
end_time = timing_counter_get();
printk("tx_index = %u\n", proof[64]);
} break;
case AMOUNT: {
const ExecutionAddress expected_tx_to = {
0xd8, 0xda, 0x6b, 0xf2, 0x69, 0x64, 0xaf, 0x9d, 0x7e, 0xed,
0x9e, 0x03, 0xe5, 0x34, 0x15, 0xd3, 0x7a, 0xa9, 0x60, 0x45,
};
const Bytes32 expected_tx_value_min = {
0x00, 0xca, 0x9a, 0x3b
};
start_time = timing_counter_get();
if (verify_amount_proof(
proof, (size_t) num_proof_bytes,
&cfg, (const Root *) transactions_root,
&expected_tx_to, &expected_tx_value_min))
{
printk("ERROR\n");
break;
}
end_time = timing_counter_get();
printk("OK\n");
} break;
case SENDER: {
const ExecutionAddress expected_tx_to = {
0xd8, 0xda, 0x6b, 0xf2, 0x69, 0x64, 0xaf, 0x9d, 0x7e, 0xed,
0x9e, 0x03, 0xe5, 0x34, 0x15, 0xd3, 0x7a, 0xa9, 0x60, 0x45,
};
const Bytes32 expected_tx_value_min = {
0x00, 0xca, 0x9a, 0x3b
};
ExecutionAddress tx_from;
start_time = timing_counter_get();
if (verify_sender_proof(
proof, (size_t) num_proof_bytes,
&cfg, (const Root *) transactions_root,
&expected_tx_to, &expected_tx_value_min,
&tx_from))
{
printk("ERROR\n");
break;
}
end_time = timing_counter_get();
printk("tx_from = 0x");
for (size_t i = 0; i < sizeof tx_from; i++)
printk("%02x", tx_from[i]);
printk("\n");
} break;
case INFO: {
TransactionInfo info;
start_time = timing_counter_get();
if (verify_info_proof(
proof, (size_t) num_proof_bytes,
&cfg, (const Root *) transactions_root,
&info))
{
printk("ERROR\n");
break;
}
end_time = timing_counter_get();
printk("info = {\n");
printk(" tx_index = %lu\n", (unsigned long) info.tx_index);
printk(" tx_hash = 0x");
for (size_t i = 0; i < sizeof info.tx_hash; i++)
printk("%02x", info.tx_hash[i]);
printk("\n");
printk(" tx_from = 0x");
for (size_t i = 0; i < sizeof info.tx_from; i++)
printk("%02x", info.tx_from[i]);
printk("\n");
printk(" nonce = %llu\n", (unsigned long long) info.nonce);
printk(" tx_to = {\n");
printk(" destination_type = %u\n", info.tx_to.destination_type);
printk(" address = 0x");
for (size_t i = 0; i < sizeof info.tx_to.address; i++)
printk("%02x", info.tx_to.address[i]);
printk("\n");
printk(" }\n");
printk(" tx_value = 0x");
for (int i = sizeof info.tx_value - 1; i >= 0; i--)
printk("%02x", info.tx_value[i]);
printk("\n");
printk(" limits = {\n");
printk(" max_priority_fee_per_gas = 0x");
for (int i = sizeof (Bytes32) - 1; i >= 0; i--)
printk("%02x", info.limits.max_priority_fee_per_gas[i]);
printk("\n");
printk(" max_fee_per_gas = 0x");
for (int i = sizeof (Bytes32) - 1; i >= 0; i--)
printk("%02x", info.limits.max_fee_per_gas[i]);
printk("\n");
printk(" gas = %llu\n", (unsigned long long) info.limits.gas);
printk(" }\n");
printk("}\n");
} break;
}
uint64_t total_cycles = timing_cycles_get(&start_time, &end_time);
uint64_t total_ns = timing_cycles_to_ns(total_cycles);
printk("cycles = %llu (%llu.%06llu ms)\n",
(unsigned long long) total_cycles,
(unsigned long long) (total_ns / 1000000),
(unsigned long long) (total_ns % 1000000));
timing_stop();
}
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