mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-24 23:38:09 +00:00
feat(crypto): update segwit_addr to support Bech32m
This commit is contained in:
parent
ac4cb88184
commit
60bd59fbad
@ -1,4 +1,4 @@
|
|||||||
/* Copyright (c) 2017 Pieter Wuille
|
/* Copyright (c) 2017, 2021 Pieter Wuille
|
||||||
*
|
*
|
||||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||||
* of this software and associated documentation files (the "Software"), to deal
|
* of this software and associated documentation files (the "Software"), to deal
|
||||||
@ -24,7 +24,7 @@
|
|||||||
|
|
||||||
#include "segwit_addr.h"
|
#include "segwit_addr.h"
|
||||||
|
|
||||||
uint32_t bech32_polymod_step(uint32_t pre) {
|
static uint32_t bech32_polymod_step(uint32_t pre) {
|
||||||
uint8_t b = pre >> 25;
|
uint8_t b = pre >> 25;
|
||||||
return ((pre & 0x1FFFFFF) << 5) ^
|
return ((pre & 0x1FFFFFF) << 5) ^
|
||||||
(-((b >> 0) & 1) & 0x3b6a57b2UL) ^
|
(-((b >> 0) & 1) & 0x3b6a57b2UL) ^
|
||||||
@ -34,6 +34,12 @@ uint32_t bech32_polymod_step(uint32_t pre) {
|
|||||||
(-((b >> 4) & 1) & 0x2a1462b3UL);
|
(-((b >> 4) & 1) & 0x2a1462b3UL);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
static uint32_t bech32_final_constant(bech32_encoding enc) {
|
||||||
|
if (enc == BECH32_ENCODING_BECH32) return 1;
|
||||||
|
if (enc == BECH32_ENCODING_BECH32M) return 0x2bc830a3;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
static const char* charset = "qpzry9x8gf2tvdw0s3jn54khce6mua7l";
|
static const char* charset = "qpzry9x8gf2tvdw0s3jn54khce6mua7l";
|
||||||
|
|
||||||
static const int8_t charset_rev[128] = {
|
static const int8_t charset_rev[128] = {
|
||||||
@ -47,7 +53,7 @@ static const int8_t charset_rev[128] = {
|
|||||||
1, 0, 3, 16, 11, 28, 12, 14, 6, 4, 2, -1, -1, -1, -1, -1
|
1, 0, 3, 16, 11, 28, 12, 14, 6, 4, 2, -1, -1, -1, -1, -1
|
||||||
};
|
};
|
||||||
|
|
||||||
int bech32_encode(char *output, const char *hrp, const uint8_t *data, size_t data_len) {
|
int bech32_encode(char *output, const char *hrp, const uint8_t *data, size_t data_len, bech32_encoding enc) {
|
||||||
uint32_t chk = 1;
|
uint32_t chk = 1;
|
||||||
size_t i = 0;
|
size_t i = 0;
|
||||||
while (hrp[i] != 0) {
|
while (hrp[i] != 0) {
|
||||||
@ -75,7 +81,7 @@ int bech32_encode(char *output, const char *hrp, const uint8_t *data, size_t dat
|
|||||||
for (i = 0; i < 6; ++i) {
|
for (i = 0; i < 6; ++i) {
|
||||||
chk = bech32_polymod_step(chk);
|
chk = bech32_polymod_step(chk);
|
||||||
}
|
}
|
||||||
chk ^= 1;
|
chk ^= bech32_final_constant(enc);
|
||||||
for (i = 0; i < 6; ++i) {
|
for (i = 0; i < 6; ++i) {
|
||||||
*(output++) = charset[(chk >> ((5 - i) * 5)) & 0x1f];
|
*(output++) = charset[(chk >> ((5 - i) * 5)) & 0x1f];
|
||||||
}
|
}
|
||||||
@ -83,14 +89,14 @@ int bech32_encode(char *output, const char *hrp, const uint8_t *data, size_t dat
|
|||||||
return 1;
|
return 1;
|
||||||
}
|
}
|
||||||
|
|
||||||
int bech32_decode(char* hrp, uint8_t *data, size_t *data_len, const char *input) {
|
bech32_encoding bech32_decode(char* hrp, uint8_t *data, size_t *data_len, const char *input) {
|
||||||
uint32_t chk = 1;
|
uint32_t chk = 1;
|
||||||
size_t i = 0;
|
size_t i = 0;
|
||||||
size_t input_len = strlen(input);
|
size_t input_len = strlen(input);
|
||||||
size_t hrp_len = 0;
|
size_t hrp_len = 0;
|
||||||
int have_lower = 0, have_upper = 0;
|
int have_lower = 0, have_upper = 0;
|
||||||
if (input_len < 8 || input_len > 90) {
|
if (input_len < 8 || input_len > 90) {
|
||||||
return 0;
|
return BECH32_ENCODING_NONE;
|
||||||
}
|
}
|
||||||
*data_len = 0;
|
*data_len = 0;
|
||||||
while (*data_len < input_len && input[(input_len - 1) - *data_len] != '1') {
|
while (*data_len < input_len && input[(input_len - 1) - *data_len] != '1') {
|
||||||
@ -98,13 +104,13 @@ int bech32_decode(char* hrp, uint8_t *data, size_t *data_len, const char *input)
|
|||||||
}
|
}
|
||||||
hrp_len = input_len - (1 + *data_len);
|
hrp_len = input_len - (1 + *data_len);
|
||||||
if (1 + *data_len >= input_len || *data_len < 6) {
|
if (1 + *data_len >= input_len || *data_len < 6) {
|
||||||
return 0;
|
return BECH32_ENCODING_NONE;
|
||||||
}
|
}
|
||||||
*(data_len) -= 6;
|
*(data_len) -= 6;
|
||||||
for (i = 0; i < hrp_len; ++i) {
|
for (i = 0; i < hrp_len; ++i) {
|
||||||
int ch = input[i];
|
int ch = input[i];
|
||||||
if (ch < 33 || ch > 126) {
|
if (ch < 33 || ch > 126) {
|
||||||
return 0;
|
return BECH32_ENCODING_NONE;
|
||||||
}
|
}
|
||||||
if (ch >= 'a' && ch <= 'z') {
|
if (ch >= 'a' && ch <= 'z') {
|
||||||
have_lower = 1;
|
have_lower = 1;
|
||||||
@ -126,7 +132,7 @@ int bech32_decode(char* hrp, uint8_t *data, size_t *data_len, const char *input)
|
|||||||
if (input[i] >= 'a' && input[i] <= 'z') have_lower = 1;
|
if (input[i] >= 'a' && input[i] <= 'z') have_lower = 1;
|
||||||
if (input[i] >= 'A' && input[i] <= 'Z') have_upper = 1;
|
if (input[i] >= 'A' && input[i] <= 'Z') have_upper = 1;
|
||||||
if (v == -1) {
|
if (v == -1) {
|
||||||
return 0;
|
return BECH32_ENCODING_NONE;
|
||||||
}
|
}
|
||||||
chk = bech32_polymod_step(chk) ^ v;
|
chk = bech32_polymod_step(chk) ^ v;
|
||||||
if (i + 6 < input_len) {
|
if (i + 6 < input_len) {
|
||||||
@ -135,9 +141,15 @@ int bech32_decode(char* hrp, uint8_t *data, size_t *data_len, const char *input)
|
|||||||
++i;
|
++i;
|
||||||
}
|
}
|
||||||
if (have_lower && have_upper) {
|
if (have_lower && have_upper) {
|
||||||
return 0;
|
return BECH32_ENCODING_NONE;
|
||||||
|
}
|
||||||
|
if (chk == bech32_final_constant(BECH32_ENCODING_BECH32)) {
|
||||||
|
return BECH32_ENCODING_BECH32;
|
||||||
|
} else if (chk == bech32_final_constant(BECH32_ENCODING_BECH32M)) {
|
||||||
|
return BECH32_ENCODING_BECH32M;
|
||||||
|
} else {
|
||||||
|
return BECH32_ENCODING_NONE;
|
||||||
}
|
}
|
||||||
return chk == 1;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
static int convert_bits(uint8_t* out, size_t* outlen, int outbits, const uint8_t* in, size_t inlen, int inbits, int pad) {
|
static int convert_bits(uint8_t* out, size_t* outlen, int outbits, const uint8_t* in, size_t inlen, int inbits, int pad) {
|
||||||
@ -165,23 +177,28 @@ static int convert_bits(uint8_t* out, size_t* outlen, int outbits, const uint8_t
|
|||||||
int segwit_addr_encode(char *output, const char *hrp, int witver, const uint8_t *witprog, size_t witprog_len) {
|
int segwit_addr_encode(char *output, const char *hrp, int witver, const uint8_t *witprog, size_t witprog_len) {
|
||||||
uint8_t data[65] = {0};
|
uint8_t data[65] = {0};
|
||||||
size_t datalen = 0;
|
size_t datalen = 0;
|
||||||
|
bech32_encoding enc = BECH32_ENCODING_BECH32;
|
||||||
if (witver > 16) return 0;
|
if (witver > 16) return 0;
|
||||||
if (witver == 0 && witprog_len != 20 && witprog_len != 32) return 0;
|
if (witver == 0 && witprog_len != 20 && witprog_len != 32) return 0;
|
||||||
if (witprog_len < 2 || witprog_len > 40) return 0;
|
if (witprog_len < 2 || witprog_len > 40) return 0;
|
||||||
|
if (witver > 0) enc = BECH32_ENCODING_BECH32M;
|
||||||
data[0] = witver;
|
data[0] = witver;
|
||||||
convert_bits(data + 1, &datalen, 5, witprog, witprog_len, 8, 1);
|
convert_bits(data + 1, &datalen, 5, witprog, witprog_len, 8, 1);
|
||||||
++datalen;
|
++datalen;
|
||||||
return bech32_encode(output, hrp, data, datalen);
|
return bech32_encode(output, hrp, data, datalen, enc);
|
||||||
}
|
}
|
||||||
|
|
||||||
int segwit_addr_decode(int* witver, uint8_t* witdata, size_t* witdata_len, const char* hrp, const char* addr) {
|
int segwit_addr_decode(int* witver, uint8_t* witdata, size_t* witdata_len, const char* hrp, const char* addr) {
|
||||||
uint8_t data[84] = {0};
|
uint8_t data[84] = {0};
|
||||||
char hrp_actual[84] = {0};
|
char hrp_actual[84] = {0};
|
||||||
size_t data_len = 0;
|
size_t data_len = 0;
|
||||||
if (!bech32_decode(hrp_actual, data, &data_len, addr)) return 0;
|
bech32_encoding enc = bech32_decode(hrp_actual, data, &data_len, addr);
|
||||||
|
if (enc == BECH32_ENCODING_NONE) return 0;
|
||||||
if (data_len == 0 || data_len > 65) return 0;
|
if (data_len == 0 || data_len > 65) return 0;
|
||||||
if (strncmp(hrp, hrp_actual, 84) != 0) return 0;
|
if (strncmp(hrp, hrp_actual, 84) != 0) return 0;
|
||||||
if (data[0] > 16) return 0;
|
if (data[0] > 16) return 0;
|
||||||
|
if (data[0] == 0 && enc != BECH32_ENCODING_BECH32) return 0;
|
||||||
|
if (data[0] > 0 && enc != BECH32_ENCODING_BECH32M) return 0;
|
||||||
*witdata_len = 0;
|
*witdata_len = 0;
|
||||||
if (!convert_bits(witdata, witdata_len, 8, data + 1, data_len - 1, 5, 0)) return 0;
|
if (!convert_bits(witdata, witdata_len, 8, data + 1, data_len - 1, 5, 0)) return 0;
|
||||||
if (*witdata_len < 2 || *witdata_len > 40) return 0;
|
if (*witdata_len < 2 || *witdata_len > 40) return 0;
|
||||||
|
@ -1,4 +1,4 @@
|
|||||||
/* Copyright (c) 2017 Pieter Wuille
|
/* Copyright (c) 2017, 2021 Pieter Wuille
|
||||||
*
|
*
|
||||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||||
* of this software and associated documentation files (the "Software"), to deal
|
* of this software and associated documentation files (the "Software"), to deal
|
||||||
@ -24,6 +24,7 @@
|
|||||||
|
|
||||||
#include <stdint.h>
|
#include <stdint.h>
|
||||||
|
|
||||||
|
|
||||||
/** Encode a SegWit address
|
/** Encode a SegWit address
|
||||||
*
|
*
|
||||||
* Out: output: Pointer to a buffer of size 73 + strlen(hrp) that will be
|
* Out: output: Pointer to a buffer of size 73 + strlen(hrp) that will be
|
||||||
@ -35,8 +36,13 @@
|
|||||||
* prog_len: Number of data bytes in prog.
|
* prog_len: Number of data bytes in prog.
|
||||||
* Returns 1 if successful.
|
* Returns 1 if successful.
|
||||||
*/
|
*/
|
||||||
int segwit_addr_encode(char *output, const char *hrp, int ver,
|
int segwit_addr_encode(
|
||||||
const uint8_t *prog, size_t prog_len);
|
char *output,
|
||||||
|
const char *hrp,
|
||||||
|
int ver,
|
||||||
|
const uint8_t *prog,
|
||||||
|
size_t prog_len
|
||||||
|
);
|
||||||
|
|
||||||
/** Decode a SegWit address
|
/** Decode a SegWit address
|
||||||
*
|
*
|
||||||
@ -44,27 +50,47 @@ int segwit_addr_encode(char *output, const char *hrp, int ver,
|
|||||||
* program version (between 0 and 16 inclusive).
|
* program version (between 0 and 16 inclusive).
|
||||||
* prog: Pointer to a buffer of size 40 that will be updated to
|
* prog: Pointer to a buffer of size 40 that will be updated to
|
||||||
* contain the witness program bytes.
|
* contain the witness program bytes.
|
||||||
* prog_len: Pointer to a size_t that will be updated to contain the
|
* prog_len: Pointer to a size_t that will be updated to contain the length
|
||||||
* length of bytes in prog. hrp: Pointer to the null-terminated human
|
* of bytes in prog.
|
||||||
* readable part that is expected (chain/network specific). addr: Pointer to
|
* hrp: Pointer to the null-terminated human readable part that is
|
||||||
* the null-terminated address. Returns 1 if successful.
|
* expected (chain/network specific).
|
||||||
|
* addr: Pointer to the null-terminated address.
|
||||||
|
* Returns 1 if successful.
|
||||||
*/
|
*/
|
||||||
int segwit_addr_decode(int *ver, uint8_t *prog, size_t *prog_len,
|
int segwit_addr_decode(
|
||||||
const char *hrp, const char *addr);
|
int* ver,
|
||||||
|
uint8_t* prog,
|
||||||
|
size_t* prog_len,
|
||||||
|
const char* hrp,
|
||||||
|
const char* addr
|
||||||
|
);
|
||||||
|
|
||||||
/** Encode a Bech32 string
|
/** Supported encodings. */
|
||||||
|
typedef enum {
|
||||||
|
BECH32_ENCODING_NONE,
|
||||||
|
BECH32_ENCODING_BECH32,
|
||||||
|
BECH32_ENCODING_BECH32M
|
||||||
|
} bech32_encoding;
|
||||||
|
|
||||||
|
/** Encode a Bech32 or Bech32m string
|
||||||
*
|
*
|
||||||
* Out: output: Pointer to a buffer of size strlen(hrp) + data_len + 8 that
|
* Out: output: Pointer to a buffer of size strlen(hrp) + data_len + 8 that
|
||||||
* will be updated to contain the null-terminated Bech32 string.
|
* will be updated to contain the null-terminated Bech32 string.
|
||||||
* In: hrp : Pointer to the null-terminated human readable part.
|
* In: hrp : Pointer to the null-terminated human readable part.
|
||||||
* data : Pointer to an array of 5-bit values.
|
* data : Pointer to an array of 5-bit values.
|
||||||
* data_len: Length of the data array.
|
* data_len: Length of the data array.
|
||||||
|
* enc: Which encoding to use (BECH32_ENCODING_BECH32{,M}).
|
||||||
* Returns 1 if successful.
|
* Returns 1 if successful.
|
||||||
*/
|
*/
|
||||||
int bech32_encode(char *output, const char *hrp, const uint8_t *data,
|
int bech32_encode(
|
||||||
size_t data_len);
|
char *output,
|
||||||
|
const char *hrp,
|
||||||
|
const uint8_t *data,
|
||||||
|
size_t data_len,
|
||||||
|
bech32_encoding enc
|
||||||
|
);
|
||||||
|
|
||||||
/** Decode a Bech32 string
|
/** Decode a Bech32 or Bech32m string
|
||||||
*
|
*
|
||||||
* Out: hrp: Pointer to a buffer of size strlen(input) - 6. Will be
|
* Out: hrp: Pointer to a buffer of size strlen(input) - 6. Will be
|
||||||
* updated to contain the null-terminated human readable part.
|
* updated to contain the null-terminated human readable part.
|
||||||
@ -73,9 +99,15 @@ int bech32_encode(char *output, const char *hrp, const uint8_t *data,
|
|||||||
* data_len: Pointer to a size_t that will be updated to be the number
|
* data_len: Pointer to a size_t that will be updated to be the number
|
||||||
* of entries in data.
|
* of entries in data.
|
||||||
* In: input: Pointer to a null-terminated Bech32 string.
|
* In: input: Pointer to a null-terminated Bech32 string.
|
||||||
* Returns 1 if succesful.
|
* Returns BECH32_ENCODING_BECH32{,M} to indicate decoding was successful
|
||||||
|
* with the specified encoding standard. BECH32_ENCODING_NONE is returned if
|
||||||
|
* decoding failed.
|
||||||
*/
|
*/
|
||||||
int bech32_decode(char *hrp, uint8_t *data, size_t *data_len,
|
bech32_encoding bech32_decode(
|
||||||
const char *input);
|
char *hrp,
|
||||||
|
uint8_t *data,
|
||||||
|
size_t *data_len,
|
||||||
|
const char *input
|
||||||
|
);
|
||||||
|
|
||||||
#endif
|
#endif
|
||||||
|
@ -106,7 +106,7 @@ START_TEST(test_segwit) {
|
|||||||
size_t data_len;
|
size_t data_len;
|
||||||
int res = bech32_decode(hrp, data, &data_len, valid_checksum[i]);
|
int res = bech32_decode(hrp, data, &data_len, valid_checksum[i]);
|
||||||
ck_assert_int_eq(res, 1);
|
ck_assert_int_eq(res, 1);
|
||||||
res = bech32_encode(rebuild, hrp, data, data_len);
|
res = bech32_encode(rebuild, hrp, data, data_len, BECH32_ENCODING_BECH32);
|
||||||
ck_assert_int_eq(res, 1);
|
ck_assert_int_eq(res, 1);
|
||||||
ck_assert_int_eq(my_strncasecmp(rebuild, valid_checksum[i], 92), 0);
|
ck_assert_int_eq(my_strncasecmp(rebuild, valid_checksum[i], 92), 0);
|
||||||
}
|
}
|
||||||
|
1
legacy/firmware/.changelog.d/1656.added
Normal file
1
legacy/firmware/.changelog.d/1656.added
Normal file
@ -0,0 +1 @@
|
|||||||
|
Support sending to Taproot addresses.
|
Loading…
Reference in New Issue
Block a user