59 lines
2.0 KiB
C
59 lines
2.0 KiB
C
#ifdef HAVE_STARKWARE
|
|
|
|
#include "shared_context.h"
|
|
#include "apdu_constants.h"
|
|
#include "stark_utils.h"
|
|
#include "ui_flow.h"
|
|
#include "ui_callbacks.h"
|
|
|
|
void handleStarkwareUnsafeSign(uint8_t p1,
|
|
uint8_t p2,
|
|
uint8_t *dataBuffer,
|
|
uint16_t dataLength,
|
|
unsigned int *flags,
|
|
unsigned int *tx) {
|
|
uint32_t i;
|
|
uint8_t privateKeyData[32];
|
|
cx_ecfp_public_key_t publicKey;
|
|
cx_ecfp_private_key_t privateKey;
|
|
uint8_t bip32PathLength = *(dataBuffer);
|
|
uint8_t offset = 1;
|
|
// Initial checks
|
|
if (appState != APP_STATE_IDLE) {
|
|
reset_app_context();
|
|
}
|
|
if ((bip32PathLength < 0x01) || (bip32PathLength > MAX_BIP32_PATH)) {
|
|
PRINTF("Invalid path\n");
|
|
THROW(0x6a80);
|
|
}
|
|
if ((p1 != 0) || (p2 != 0)) {
|
|
THROW(0x6B00);
|
|
}
|
|
|
|
if (dataLength != 32 + 4 * bip32PathLength + 1) {
|
|
THROW(0x6700);
|
|
}
|
|
|
|
tmpCtx.transactionContext.pathLength = bip32PathLength;
|
|
for (i = 0; i < bip32PathLength; i++) {
|
|
tmpCtx.transactionContext.bip32Path[i] = U4BE(dataBuffer, offset);
|
|
PRINTF("Storing path %d %d\n", i, tmpCtx.transactionContext.bip32Path[i]);
|
|
offset += 4;
|
|
}
|
|
memmove(dataContext.starkContext.w2, dataBuffer + offset, 32);
|
|
io_seproxyhal_io_heartbeat();
|
|
starkDerivePrivateKey(tmpCtx.transactionContext.bip32Path, bip32PathLength, privateKeyData);
|
|
cx_ecfp_init_private_key(CX_CURVE_Stark256, privateKeyData, 32, &privateKey);
|
|
io_seproxyhal_io_heartbeat();
|
|
cx_ecfp_generate_pair(CX_CURVE_Stark256, &publicKey, &privateKey, 1);
|
|
explicit_bzero(&privateKey, sizeof(privateKey));
|
|
explicit_bzero(privateKeyData, sizeof(privateKeyData));
|
|
io_seproxyhal_io_heartbeat();
|
|
memmove(dataContext.starkContext.w1, publicKey.W + 1, 32);
|
|
ux_flow_init(0, ux_stark_unsafe_sign_flow, NULL);
|
|
|
|
*flags |= IO_ASYNCH_REPLY;
|
|
}
|
|
|
|
#endif
|