84 lines
2.6 KiB
C
84 lines
2.6 KiB
C
#include "shared_context.h"
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#include "apdu_constants.h"
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#include "common_utils.h"
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#include "feature_getPublicKey.h"
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#include "common_ui.h"
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#include "os_io_seproxyhal.h"
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#include "lib_standard_app/crypto_helpers.h"
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void handleGetPublicKey(uint8_t p1,
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uint8_t p2,
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const uint8_t *dataBuffer,
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uint8_t dataLength,
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unsigned int *flags,
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unsigned int *tx) {
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bip32_path_t bip32;
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if (!G_called_from_swap) {
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reset_app_context();
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}
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if ((p1 != P1_CONFIRM) && (p1 != P1_NON_CONFIRM)) {
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PRINTF("Error: Unexpected P1 (%u)!\n", p1);
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THROW(APDU_RESPONSE_INVALID_P1_P2);
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}
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if ((p2 != P2_CHAINCODE) && (p2 != P2_NO_CHAINCODE)) {
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PRINTF("Error: Unexpected P2 (%u)!\n", p2);
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THROW(APDU_RESPONSE_INVALID_P1_P2);
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}
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dataBuffer = parseBip32(dataBuffer, &dataLength, &bip32);
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if (dataBuffer == NULL) {
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THROW(APDU_RESPONSE_INVALID_DATA);
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}
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tmpCtx.publicKeyContext.getChaincode = (p2 == P2_CHAINCODE);
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if (bip32_derive_get_pubkey_256(
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CX_CURVE_256K1,
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bip32.path,
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bip32.length,
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tmpCtx.publicKeyContext.publicKey.W,
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(tmpCtx.publicKeyContext.getChaincode ? tmpCtx.publicKeyContext.chainCode : NULL),
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CX_SHA512) != CX_OK) {
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THROW(APDU_RESPONSE_UNKNOWN);
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}
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getEthAddressStringFromRawKey(tmpCtx.publicKeyContext.publicKey.W,
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tmpCtx.publicKeyContext.address,
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chainConfig->chainId);
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uint64_t chain_id = chainConfig->chainId;
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if (dataLength >= sizeof(chain_id)) {
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chain_id = u64_from_BE(dataBuffer, sizeof(chain_id));
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dataLength -= sizeof(chain_id);
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dataBuffer += sizeof(chain_id);
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}
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(void) dataBuffer; // to prevent dead increment warning
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if (dataLength > 0) {
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PRINTF("Error: Leftover unwanted data (%u bytes long)!\n", dataLength);
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THROW(APDU_RESPONSE_INVALID_DATA);
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}
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#ifndef NO_CONSENT
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if (p1 == P1_NON_CONFIRM)
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#endif // NO_CONSENT
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{
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*tx = set_result_get_publicKey();
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THROW(APDU_RESPONSE_OK);
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}
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#ifndef NO_CONSENT
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else {
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snprintf(strings.common.fullAddress,
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sizeof(strings.common.fullAddress),
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"0x%.*s",
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40,
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tmpCtx.publicKeyContext.address);
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// don't unnecessarily pass the current app's chain ID
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ui_display_public_key(chainConfig->chainId == chain_id ? NULL : &chain_id);
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*flags |= IO_ASYNCH_REPLY;
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}
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#endif // NO_CONSENT
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}
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