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EIP 155 support. Free up some RAM for U2F buffers

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This commit is contained in:
BTChip
2016-11-25 09:10:04 +01:00
parent 050f482fe5
commit 54ea8ac82e
4 changed files with 59 additions and 7 deletions
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21
src_genericwallet/main.c
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@@ -30,8 +30,6 @@
#include "u2f_service.h"
#include "u2f_transport.h"
volatile unsigned char u2fInputBuffer[64];
volatile unsigned char u2fOutputBuffer[64];
volatile unsigned char u2fMessageBuffer[U2F_MAX_MESSAGE_SIZE];
extern void USB_power_U2F(unsigned char enabled, unsigned char fido);
@@ -1377,7 +1375,19 @@ unsigned int io_seproxyhal_touch_tx_ok(const bagl_element_t *e) {
sizeof(tmpCtx.transactionContext.hash), signature);
os_memset(&privateKey, 0, sizeof(privateKey));
// Parity is present in the sequence tag in the legacy API
G_io_apdu_buffer[0] = 27 + (signature[0] & 0x01);
if (txContent.vLength == 0) {
// Legacy API
G_io_apdu_buffer[0] = 27 + (signature[0] & 0x01);
} else {
// New API
uint8_t v;
if (txContent.vLength == 1) {
v = txContent.v[0];
} else {
v = txContent.v[1];
}
G_io_apdu_buffer[0] = (v * 2) + 35 + (signature[0] & 0x01);
}
rLength = signature[3];
sLength = signature[4 + rLength + 1];
rOffset = (rLength == 33 ? 1 : 0);
@@ -1748,7 +1758,6 @@ void handleApdu(volatile unsigned int *flags, volatile unsigned int *tx) {
G_io_apdu_buffer[OFFSET_LC], flags, tx);
break;
default:
THROW(0x6D00);
break;
@@ -1942,8 +1951,8 @@ __attribute__((section(".boot"))) int main(void) {
#ifdef HAVE_U2F
os_memset((unsigned char *)&u2fService, 0, sizeof(u2fService));
u2fService.inputBuffer = (uint8_t *)u2fInputBuffer;
u2fService.outputBuffer = (uint8_t *)u2fOutputBuffer;
u2fService.inputBuffer = G_io_apdu_buffer;
u2fService.outputBuffer = G_io_apdu_buffer;
u2fService.messageBuffer = (uint8_t *)u2fMessageBuffer;
u2fService.messageBufferSize = U2F_MAX_MESSAGE_SIZE;
u2f_initialize_service((u2f_service_t *)&u2fService);