49 lines
1.8 KiB
C
49 lines
1.8 KiB
C
#include "os_io_seproxyhal.h"
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#include "apdu_constants.h"
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#include "crypto_helpers.h"
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#include "common_ui.h"
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unsigned int io_seproxyhal_touch_signMessage_ok(void) {
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uint32_t tx = 0;
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unsigned int info = 0;
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if (bip32_derive_ecdsa_sign_rs_hash_256(CX_CURVE_256K1,
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tmpCtx.messageSigningContext.bip32.path,
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tmpCtx.messageSigningContext.bip32.length,
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CX_RND_RFC6979 | CX_LAST,
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CX_SHA256,
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tmpCtx.messageSigningContext.hash,
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sizeof(tmpCtx.messageSigningContext.hash),
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G_io_apdu_buffer + 1,
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G_io_apdu_buffer + 1 + 32,
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&info) != CX_OK) {
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THROW(APDU_RESPONSE_UNKNOWN);
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}
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G_io_apdu_buffer[0] = 27;
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if (info & CX_ECCINFO_PARITY_ODD) {
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G_io_apdu_buffer[0]++;
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}
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if (info & CX_ECCINFO_xGTn) {
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G_io_apdu_buffer[0] += 2;
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}
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tx = 65;
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G_io_apdu_buffer[tx++] = 0x90;
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G_io_apdu_buffer[tx++] = 0x00;
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reset_app_context();
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// Send back the response, do not restart the event loop
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io_exchange(CHANNEL_APDU | IO_RETURN_AFTER_TX, tx);
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// Display back the original UX
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ui_idle();
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return 0; // do not redraw the widget
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}
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unsigned int io_seproxyhal_touch_signMessage_cancel(void) {
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reset_app_context();
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G_io_apdu_buffer[0] = 0x69;
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G_io_apdu_buffer[1] = 0x85;
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// Send back the response, do not restart the event loop
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io_exchange(CHANNEL_APDU | IO_RETURN_AFTER_TX, 2);
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// Display back the original UX
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ui_idle();
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return 0; // do not redraw the widget
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}
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