mirror of
https://github.com/trezor/trezor-firmware.git
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692 lines
24 KiB
C
692 lines
24 KiB
C
/*
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* This file is part of the Trezor project, https://trezor.io/
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*
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* Copyright (C) 2014 Pavol Rusnak <stick@satoshilabs.com>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "crypto.h"
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#include <string.h>
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#include "address.h"
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#include "aes/aes.h"
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#include "base58.h"
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#include "bip32.h"
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#include "cash_addr.h"
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#include "coins.h"
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#include "curves.h"
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#include "hmac.h"
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#include "layout.h"
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#include "pbkdf2.h"
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#include "secp256k1.h"
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#include "segwit_addr.h"
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#include "sha2.h"
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#define PATH_MAX_ACCOUNT 100
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#define PATH_MAX_CHANGE 1
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#define PATH_MAX_ADDRESS_INDEX 1000000
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uint32_t ser_length(uint32_t len, uint8_t *out) {
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if (len < 253) {
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out[0] = len & 0xFF;
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return 1;
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}
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if (len < 0x10000) {
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out[0] = 253;
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out[1] = len & 0xFF;
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out[2] = (len >> 8) & 0xFF;
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return 3;
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}
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out[0] = 254;
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out[1] = len & 0xFF;
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out[2] = (len >> 8) & 0xFF;
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out[3] = (len >> 16) & 0xFF;
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out[4] = (len >> 24) & 0xFF;
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return 5;
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}
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uint32_t ser_length_hash(Hasher *hasher, uint32_t len) {
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if (len < 253) {
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hasher_Update(hasher, (const uint8_t *)&len, 1);
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return 1;
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}
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if (len < 0x10000) {
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uint8_t d = 253;
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hasher_Update(hasher, &d, 1);
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hasher_Update(hasher, (const uint8_t *)&len, 2);
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return 3;
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}
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uint8_t d = 254;
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hasher_Update(hasher, &d, 1);
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hasher_Update(hasher, (const uint8_t *)&len, 4);
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return 5;
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}
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uint32_t deser_length(const uint8_t *in, uint32_t *out) {
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if (in[0] < 253) {
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*out = in[0];
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return 1;
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}
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if (in[0] == 253) {
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*out = in[1] + (in[2] << 8);
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return 1 + 2;
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}
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if (in[0] == 254) {
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*out = in[1] + (in[2] << 8) + (in[3] << 16) + ((uint32_t)in[4] << 24);
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return 1 + 4;
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}
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*out = 0; // ignore 64 bit
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return 1 + 8;
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}
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int sshMessageSign(HDNode *node, const uint8_t *message, size_t message_len,
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uint8_t *signature) {
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signature[0] = 0; // prefix: pad with zero, so all signatures are 65 bytes
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return hdnode_sign(node, message, message_len, HASHER_SHA2, signature + 1,
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NULL, NULL);
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}
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int gpgMessageSign(HDNode *node, const uint8_t *message, size_t message_len,
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uint8_t *signature) {
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signature[0] = 0; // prefix: pad with zero, so all signatures are 65 bytes
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const curve_info *ed25519_curve_info = get_curve_by_name(ED25519_NAME);
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if (ed25519_curve_info && node->curve == ed25519_curve_info) {
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// GPG supports variable size digest for Ed25519 signatures
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return hdnode_sign(node, message, message_len, 0, signature + 1, NULL,
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NULL);
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} else {
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// Ensure 256-bit digest before proceeding
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if (message_len != 32) {
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return 1;
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}
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return hdnode_sign_digest(node, message, signature + 1, NULL, NULL);
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}
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}
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int signifyMessageSign(HDNode *node, const uint8_t *message, size_t message_len,
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uint8_t *signature) {
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signature[0] = 0; // prefix: pad with zero, so all signatures are 65 bytes
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const curve_info *ed25519_curve_info = get_curve_by_name(ED25519_NAME);
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// only ed25519 is supported
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if (!ed25519_curve_info || node->curve != ed25519_curve_info) {
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return 1;
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}
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return hdnode_sign(node, message, message_len, 0, signature + 1, NULL, NULL);
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}
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static void cryptoMessageHash(const CoinInfo *coin, const uint8_t *message,
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size_t message_len,
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uint8_t hash[HASHER_DIGEST_LENGTH]) {
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Hasher hasher = {0};
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hasher_Init(&hasher, coin->curve->hasher_sign);
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hasher_Update(&hasher, (const uint8_t *)coin->signed_message_header,
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strlen(coin->signed_message_header));
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uint8_t varint[5] = {0};
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uint32_t l = ser_length(message_len, varint);
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hasher_Update(&hasher, varint, l);
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hasher_Update(&hasher, message, message_len);
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hasher_Final(&hasher, hash);
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}
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int cryptoMessageSign(const CoinInfo *coin, HDNode *node,
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InputScriptType script_type, bool no_script_type,
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const uint8_t *message, size_t message_len,
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uint8_t *signature) {
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uint8_t script_type_info = 0;
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switch (script_type) {
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case InputScriptType_SPENDADDRESS:
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// p2pkh
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script_type_info = 0;
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break;
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case InputScriptType_SPENDP2SHWITNESS:
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// segwit-in-p2sh
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script_type_info = 4;
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break;
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case InputScriptType_SPENDWITNESS:
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// segwit
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script_type_info = 8;
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break;
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default:
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// unsupported script type
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return 1;
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}
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if (no_script_type) {
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script_type_info = 0;
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}
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uint8_t hash[HASHER_DIGEST_LENGTH] = {0};
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cryptoMessageHash(coin, message, message_len, hash);
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uint8_t pby = 0;
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int result = hdnode_sign_digest(node, hash, signature + 1, &pby, NULL);
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if (result == 0) {
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signature[0] = 31 + pby + script_type_info;
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}
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return result;
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}
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int cryptoMessageVerify(const CoinInfo *coin, const uint8_t *message,
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size_t message_len, const char *address,
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const uint8_t *signature) {
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// check for invalid signature prefix
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if (signature[0] < 27 || signature[0] > 43) {
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return 1;
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}
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uint8_t hash[HASHER_DIGEST_LENGTH] = {0};
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cryptoMessageHash(coin, message, message_len, hash);
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uint8_t recid = (signature[0] - 27) % 4;
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bool compressed = signature[0] >= 31;
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// check if signature verifies the digest and recover the public key
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uint8_t pubkey[65] = {0};
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if (ecdsa_recover_pub_from_sig(coin->curve->params, pubkey, signature + 1,
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hash, recid) != 0) {
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return 3;
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}
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// convert public key to compressed pubkey if necessary
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if (compressed) {
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pubkey[0] = 0x02 | (pubkey[64] & 1);
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}
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// check if the address is correct
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uint8_t addr_raw[MAX_ADDR_RAW_SIZE] = {0};
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uint8_t recovered_raw[MAX_ADDR_RAW_SIZE] = {0};
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// p2pkh
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if (signature[0] >= 27 && signature[0] <= 34) {
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size_t len = 0;
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if (coin->cashaddr_prefix) {
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if (!cash_addr_decode(addr_raw, &len, coin->cashaddr_prefix, address)) {
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return 2;
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}
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} else {
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len = base58_decode_check(address, coin->curve->hasher_base58, addr_raw,
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MAX_ADDR_RAW_SIZE);
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}
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ecdsa_get_address_raw(pubkey, coin->address_type,
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coin->curve->hasher_pubkey, recovered_raw);
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if (memcmp(recovered_raw, addr_raw, len) != 0 ||
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len != address_prefix_bytes_len(coin->address_type) + 20) {
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return 2;
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}
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} else if (signature[0] >= 35 && signature[0] <= 38) {
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// segwit-in-p2sh
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size_t len = base58_decode_check(address, coin->curve->hasher_base58,
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addr_raw, MAX_ADDR_RAW_SIZE);
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ecdsa_get_address_segwit_p2sh_raw(pubkey, coin->address_type_p2sh,
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coin->curve->hasher_pubkey,
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recovered_raw);
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if (memcmp(recovered_raw, addr_raw, len) != 0 ||
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len != address_prefix_bytes_len(coin->address_type_p2sh) + 20) {
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return 2;
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}
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} else if (signature[0] >= 39 && signature[0] <= 42) {
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// segwit
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int witver = 0;
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size_t len = 0;
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if (!coin->bech32_prefix ||
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!segwit_addr_decode(&witver, recovered_raw, &len, coin->bech32_prefix,
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address)) {
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return 4;
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}
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ecdsa_get_pubkeyhash(pubkey, coin->curve->hasher_pubkey, addr_raw);
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if (memcmp(recovered_raw, addr_raw, len) != 0 || witver != 0 || len != 20) {
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return 2;
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}
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} else {
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return 4;
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}
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return 0;
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}
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const HDNode *cryptoMultisigPubkey(const CoinInfo *coin,
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const MultisigRedeemScriptType *multisig,
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uint32_t index) {
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const HDNodeType *node_ptr = NULL;
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const uint32_t *address_n = NULL;
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uint32_t address_n_count = 0;
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if (multisig->nodes_count) { // use multisig->nodes
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if (index >= multisig->nodes_count) {
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return 0;
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}
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node_ptr = &(multisig->nodes[index]);
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address_n = multisig->address_n;
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address_n_count = multisig->address_n_count;
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} else if (multisig->pubkeys_count) { // use multisig->pubkeys
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if (index >= multisig->pubkeys_count) {
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return 0;
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}
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node_ptr = &(multisig->pubkeys[index].node);
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address_n = multisig->pubkeys[index].address_n;
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address_n_count = multisig->pubkeys[index].address_n_count;
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} else {
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return 0;
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}
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if (node_ptr->chain_code.size != 32) return 0;
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if (node_ptr->public_key.size != 33) return 0;
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static HDNode node;
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if (!hdnode_from_xpub(node_ptr->depth, node_ptr->child_num,
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node_ptr->chain_code.bytes, node_ptr->public_key.bytes,
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coin->curve_name, &node)) {
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return 0;
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}
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layoutProgressUpdate(true);
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for (uint32_t i = 0; i < address_n_count; i++) {
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if (!hdnode_public_ckd(&node, address_n[i])) {
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return 0;
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}
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layoutProgressUpdate(true);
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}
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return &node;
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}
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uint32_t cryptoMultisigPubkeyCount(const MultisigRedeemScriptType *multisig) {
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return multisig->nodes_count ? multisig->nodes_count
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: multisig->pubkeys_count;
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}
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int cryptoMultisigPubkeyIndex(const CoinInfo *coin,
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const MultisigRedeemScriptType *multisig,
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const uint8_t *pubkey) {
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for (size_t i = 0; i < cryptoMultisigPubkeyCount(multisig); i++) {
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const HDNode *pubnode = cryptoMultisigPubkey(coin, multisig, i);
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if (pubnode && memcmp(pubnode->public_key, pubkey, 33) == 0) {
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return i;
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}
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}
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return -1;
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}
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int cryptoMultisigFingerprint(const MultisigRedeemScriptType *multisig,
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uint8_t *hash) {
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static const HDNodeType *pubnodes[15], *swap;
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const uint32_t n = cryptoMultisigPubkeyCount(multisig);
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if (n < 1 || n > 15) {
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return 0;
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}
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if (multisig->m < 1 || multisig->m > 15) {
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return 0;
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}
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for (uint32_t i = 0; i < n; i++) {
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if (multisig->nodes_count) { // use multisig->nodes
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pubnodes[i] = &(multisig->nodes[i]);
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} else if (multisig->pubkeys_count) { // use multisig->pubkeys
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pubnodes[i] = &(multisig->pubkeys[i].node);
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} else {
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return 0;
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}
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}
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for (uint32_t i = 0; i < n; i++) {
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if (pubnodes[i]->public_key.size != 33) return 0;
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if (pubnodes[i]->chain_code.size != 32) return 0;
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}
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// minsort according to pubkey
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for (uint32_t i = 0; i < n - 1; i++) {
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for (uint32_t j = n - 1; j > i; j--) {
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if (memcmp(pubnodes[i]->public_key.bytes, pubnodes[j]->public_key.bytes,
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33) > 0) {
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swap = pubnodes[i];
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pubnodes[i] = pubnodes[j];
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pubnodes[j] = swap;
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}
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}
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}
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// hash sorted nodes
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SHA256_CTX ctx = {0};
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sha256_Init(&ctx);
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sha256_Update(&ctx, (const uint8_t *)&(multisig->m), sizeof(uint32_t));
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for (uint32_t i = 0; i < n; i++) {
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sha256_Update(&ctx, (const uint8_t *)&(pubnodes[i]->depth),
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sizeof(uint32_t));
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sha256_Update(&ctx, (const uint8_t *)&(pubnodes[i]->fingerprint),
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sizeof(uint32_t));
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sha256_Update(&ctx, (const uint8_t *)&(pubnodes[i]->child_num),
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sizeof(uint32_t));
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sha256_Update(&ctx, pubnodes[i]->chain_code.bytes, 32);
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sha256_Update(&ctx, pubnodes[i]->public_key.bytes, 33);
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}
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sha256_Update(&ctx, (const uint8_t *)&n, sizeof(uint32_t));
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sha256_Final(&ctx, hash);
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layoutProgressUpdate(true);
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return 1;
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}
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int cryptoIdentityFingerprint(const IdentityType *identity, uint8_t *hash) {
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SHA256_CTX ctx = {0};
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sha256_Init(&ctx);
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sha256_Update(&ctx, (const uint8_t *)&(identity->index), sizeof(uint32_t));
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if (identity->has_proto && identity->proto[0]) {
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sha256_Update(&ctx, (const uint8_t *)(identity->proto),
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strlen(identity->proto));
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sha256_Update(&ctx, (const uint8_t *)"://", 3);
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}
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if (identity->has_user && identity->user[0]) {
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sha256_Update(&ctx, (const uint8_t *)(identity->user),
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strlen(identity->user));
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sha256_Update(&ctx, (const uint8_t *)"@", 1);
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}
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if (identity->has_host && identity->host[0]) {
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sha256_Update(&ctx, (const uint8_t *)(identity->host),
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strlen(identity->host));
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}
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if (identity->has_port && identity->port[0]) {
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sha256_Update(&ctx, (const uint8_t *)":", 1);
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sha256_Update(&ctx, (const uint8_t *)(identity->port),
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strlen(identity->port));
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}
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if (identity->has_path && identity->path[0]) {
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sha256_Update(&ctx, (const uint8_t *)(identity->path),
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strlen(identity->path));
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}
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sha256_Final(&ctx, hash);
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return 1;
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}
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static bool check_cointype(const CoinInfo *coin, uint32_t slip44, bool full) {
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#if BITCOIN_ONLY
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(void)full;
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#else
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if (!full) {
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// Some wallets such as Electron-Cash (BCH) store coins on Bitcoin paths.
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// We can allow spending these coins from Bitcoin paths if the coin has
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// implemented strong replay protection via SIGHASH_FORKID. However, we
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// cannot allow spending any testnet coins from Bitcoin paths, because
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// otherwise an attacker could trick the user into spending BCH on a Bitcoin
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// path by signing a seemingly harmless BCH Testnet transaction.
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if (slip44 == SLIP44_BITCOIN && coin->has_fork_id &&
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coin->coin_type != SLIP44_TESTNET) {
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return true;
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}
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}
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#endif
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return coin->coin_type == slip44;
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}
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bool coin_path_check(const CoinInfo *coin, InputScriptType script_type,
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uint32_t address_n_count, const uint32_t *address_n,
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bool has_multisig, CoinPathCheckLevel level) {
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// For level BASIC this function checks that a coin without strong replay
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// protection doesn't access paths that are known to be used by another coin.
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// Used by SignTx to ensure that a user cannot be coerced into signing a
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// testnet transaction or a Litecoin transaction which in fact spends Bitcoin.
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// For level KNOWN this function checks that the path is a recognized path for
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// the given coin. Used by GetAddress to prevent ransom attacks where a user
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// could be coerced to use an address with an unenumerable path.
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// For level SCRIPT_TYPE this function makes the same checks as in level
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// KNOWN, but includes script type checks.
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const bool check_known = (level >= CoinPathCheckLevel_KNOWN);
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const bool check_script_type = (level >= CoinPathCheckLevel_SCRIPT_TYPE);
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bool valid = true;
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// m/44' : BIP44 Legacy
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// m / purpose' / coin_type' / account' / change / address_index
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if (address_n_count > 0 && address_n[0] == (0x80000000 + 44)) {
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if (check_known) {
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valid = valid && (address_n_count == 5);
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} else {
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valid = valid && (address_n_count >= 2);
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}
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valid = valid && check_cointype(coin, address_n[1], check_known);
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if (check_script_type) {
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valid = valid && (script_type == InputScriptType_SPENDADDRESS);
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valid = valid && (!has_multisig);
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}
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if (check_known) {
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valid = valid && ((address_n[2] & 0x80000000) == 0x80000000);
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valid = valid && ((address_n[2] & 0x7fffffff) <= PATH_MAX_ACCOUNT);
|
|
valid = valid && (address_n[3] <= PATH_MAX_CHANGE);
|
|
valid = valid && (address_n[4] <= PATH_MAX_ADDRESS_INDEX);
|
|
}
|
|
return valid;
|
|
}
|
|
|
|
if (address_n_count > 0 && address_n[0] == (0x80000000 + 45)) {
|
|
if (check_script_type) {
|
|
valid = valid && has_multisig;
|
|
}
|
|
|
|
if (address_n_count == 4) {
|
|
// m/45' - BIP45 Copay Abandoned Multisig P2SH
|
|
// m / purpose' / cosigner_index / change / address_index
|
|
// Patterns without a coin_type field must be treated as Bitcoin paths.
|
|
valid = valid && check_cointype(coin, SLIP44_BITCOIN, check_known);
|
|
if (check_script_type) {
|
|
valid = valid && (script_type == InputScriptType_SPENDMULTISIG);
|
|
}
|
|
if (check_known) {
|
|
valid = valid && (address_n[1] <= 100);
|
|
valid = valid && (address_n[2] <= PATH_MAX_CHANGE);
|
|
valid = valid && (address_n[3] <= PATH_MAX_ADDRESS_INDEX);
|
|
}
|
|
} else if (address_n_count == 5) {
|
|
// Unchained Capital compatibility pattern. Will be removed in the
|
|
// future.
|
|
// m / 45' / coin_type' / account' / [0-1000000] / address_index
|
|
valid = valid && check_cointype(coin, address_n[1], check_known);
|
|
if (check_script_type) {
|
|
valid = valid && (script_type == InputScriptType_SPENDADDRESS ||
|
|
script_type == InputScriptType_SPENDMULTISIG);
|
|
}
|
|
if (check_known) {
|
|
valid = valid && ((address_n[2] & 0x80000000) == 0x80000000);
|
|
valid = valid && ((address_n[2] & 0x7fffffff) <= PATH_MAX_ACCOUNT);
|
|
valid = valid && (address_n[3] <= 1000000);
|
|
valid = valid && (address_n[4] <= PATH_MAX_ADDRESS_INDEX);
|
|
}
|
|
} else if (address_n_count == 6) {
|
|
// Unchained Capital compatibility pattern. Will be removed in the
|
|
// future.
|
|
// m/45'/coin_type'/account'/[0-1000000]/change/address_index
|
|
// m/45'/coin_type/account/[0-1000000]/change/address_index
|
|
valid =
|
|
valid && check_cointype(coin, 0x80000000 | address_n[1], check_known);
|
|
if (check_script_type) {
|
|
valid = valid && (script_type == InputScriptType_SPENDADDRESS ||
|
|
script_type == InputScriptType_SPENDMULTISIG);
|
|
}
|
|
if (check_known) {
|
|
valid = valid &&
|
|
((address_n[1] & 0x80000000) == (address_n[2] & 0x80000000));
|
|
valid = valid && ((address_n[2] & 0x7fffffff) <= PATH_MAX_ACCOUNT);
|
|
valid = valid && (address_n[3] <= 1000000);
|
|
valid = valid && (address_n[4] <= PATH_MAX_CHANGE);
|
|
valid = valid && (address_n[5] <= PATH_MAX_ADDRESS_INDEX);
|
|
}
|
|
} else {
|
|
if (check_known) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return valid;
|
|
}
|
|
|
|
// m/48' - BIP48 Copay Multisig P2SH
|
|
// m / purpose' / coin_type' / account' / change / address_index
|
|
// Electrum:
|
|
// m / purpose' / coin_type' / account' / type' / change / address_index
|
|
if (address_n_count > 0 && address_n[0] == (0x80000000 + 48)) {
|
|
if (check_known) {
|
|
valid = valid && (address_n_count == 5 || address_n_count == 6);
|
|
} else {
|
|
valid = valid && (address_n_count >= 2);
|
|
}
|
|
valid = valid && check_cointype(coin, address_n[1], check_known);
|
|
if (check_script_type) {
|
|
valid = valid && has_multisig;
|
|
// we do not support Multisig with Taproot yet
|
|
valid = valid && (script_type == InputScriptType_SPENDMULTISIG ||
|
|
script_type == InputScriptType_SPENDP2SHWITNESS ||
|
|
script_type == InputScriptType_SPENDWITNESS);
|
|
}
|
|
if (check_known) {
|
|
valid = valid && ((address_n[2] & 0x80000000) == 0x80000000);
|
|
valid = valid && ((address_n[2] & 0x7fffffff) <= PATH_MAX_ACCOUNT);
|
|
if (address_n_count == 5) {
|
|
valid = valid && (address_n[3] <= PATH_MAX_CHANGE);
|
|
valid = valid && (address_n[4] <= PATH_MAX_ADDRESS_INDEX);
|
|
} else if (address_n_count == 6) {
|
|
valid = valid && ((address_n[3] & 0x80000000) == 0x80000000);
|
|
valid = valid && ((address_n[3] & 0x7fffffff) <= 3);
|
|
valid = valid && (address_n[4] <= PATH_MAX_CHANGE);
|
|
valid = valid && (address_n[5] <= PATH_MAX_ADDRESS_INDEX);
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
return valid;
|
|
}
|
|
|
|
// m/49' : BIP49 SegWit
|
|
// m / purpose' / coin_type' / account' / change / address_index
|
|
if (address_n_count > 0 && address_n[0] == (0x80000000 + 49)) {
|
|
valid = valid && coin->has_segwit;
|
|
if (check_known) {
|
|
valid = valid && (address_n_count == 5);
|
|
} else {
|
|
valid = valid && (address_n_count >= 2);
|
|
}
|
|
valid = valid && check_cointype(coin, address_n[1], check_known);
|
|
if (check_script_type) {
|
|
valid = valid && (script_type == InputScriptType_SPENDP2SHWITNESS);
|
|
}
|
|
if (check_known) {
|
|
valid = valid && ((address_n[2] & 0x80000000) == 0x80000000);
|
|
valid = valid && ((address_n[2] & 0x7fffffff) <= PATH_MAX_ACCOUNT);
|
|
valid = valid && (address_n[3] <= PATH_MAX_CHANGE);
|
|
valid = valid && (address_n[4] <= PATH_MAX_ADDRESS_INDEX);
|
|
}
|
|
return valid;
|
|
}
|
|
|
|
// m/84' : BIP84 Native SegWit
|
|
// m / purpose' / coin_type' / account' / change / address_index
|
|
if (address_n_count > 0 && address_n[0] == (0x80000000 + 84)) {
|
|
valid = valid && coin->has_segwit;
|
|
valid = valid && (coin->bech32_prefix != NULL);
|
|
if (check_known) {
|
|
valid = valid && (address_n_count == 5);
|
|
} else {
|
|
valid = valid && (address_n_count >= 2);
|
|
}
|
|
valid = valid && check_cointype(coin, address_n[1], check_known);
|
|
if (check_script_type) {
|
|
valid = valid && (script_type == InputScriptType_SPENDWITNESS);
|
|
}
|
|
if (check_known) {
|
|
valid = valid && ((address_n[2] & 0x80000000) == 0x80000000);
|
|
valid = valid && ((address_n[2] & 0x7fffffff) <= PATH_MAX_ACCOUNT);
|
|
valid = valid && (address_n[3] <= PATH_MAX_CHANGE);
|
|
valid = valid && (address_n[4] <= PATH_MAX_ADDRESS_INDEX);
|
|
}
|
|
return valid;
|
|
}
|
|
|
|
// m/86' : BIP86 Taproot
|
|
// m / purpose' / coin_type' / account' / change / address_index
|
|
if (address_n_count > 0 && address_n[0] == (0x80000000 + 86)) {
|
|
valid = valid && coin->has_taproot;
|
|
valid = valid && (coin->bech32_prefix != NULL);
|
|
if (check_known) {
|
|
valid = valid && (address_n_count == 5);
|
|
} else {
|
|
valid = valid && (address_n_count >= 2);
|
|
}
|
|
valid = valid && check_cointype(coin, address_n[1], check_known);
|
|
if (check_script_type) {
|
|
// we do not support Multisig with Taproot yet
|
|
valid = valid && !has_multisig;
|
|
valid = valid && (script_type == InputScriptType_SPENDTAPROOT);
|
|
}
|
|
if (check_known) {
|
|
valid = valid && ((address_n[2] & 0x80000000) == 0x80000000);
|
|
valid = valid && ((address_n[2] & 0x7fffffff) <= PATH_MAX_ACCOUNT);
|
|
valid = valid && (address_n[3] <= PATH_MAX_CHANGE);
|
|
valid = valid && (address_n[4] <= PATH_MAX_ADDRESS_INDEX);
|
|
}
|
|
return valid;
|
|
}
|
|
|
|
// Green Address compatibility pattern. Will be removed in the future.
|
|
// m / [1,4] / address_index
|
|
if (address_n_count > 0 && (address_n[0] == 1 || address_n[0] == 4)) {
|
|
valid = valid && (coin->coin_type == SLIP44_BITCOIN);
|
|
if (check_known) {
|
|
valid = valid && (address_n_count == 2);
|
|
valid = valid && (address_n[1] <= PATH_MAX_ADDRESS_INDEX);
|
|
}
|
|
return valid;
|
|
}
|
|
|
|
// Green Address compatibility pattern. Will be removed in the future.
|
|
// m / 3' / [1-100]' / [1,4] / address_index
|
|
if (address_n_count > 0 && address_n[0] == (0x80000000 + 3)) {
|
|
valid = valid && (coin->coin_type == SLIP44_BITCOIN);
|
|
if (check_known) {
|
|
valid = valid && (address_n_count == 4);
|
|
valid = valid && ((address_n[1] & 0x80000000) == 0x80000000);
|
|
valid = valid && ((address_n[1] & 0x7fffffff) <= 100);
|
|
valid = valid && (address_n[2] == 1 || address_n[2] == 4);
|
|
valid = valid && (address_n[3] <= PATH_MAX_ADDRESS_INDEX);
|
|
}
|
|
return valid;
|
|
}
|
|
|
|
// Green Address compatibility patterns. Will be removed in the future.
|
|
// m / 1195487518
|
|
// m / 1195487518 / 6 / address_index
|
|
if (address_n_count > 0 && address_n[0] == 1195487518) {
|
|
valid = valid && (coin->coin_type == SLIP44_BITCOIN);
|
|
if (check_known) {
|
|
if (address_n_count == 3) {
|
|
valid = valid && (address_n[1] == 6);
|
|
valid = valid && (address_n[2] <= PATH_MAX_ADDRESS_INDEX);
|
|
} else if (address_n_count != 1) {
|
|
return false;
|
|
}
|
|
}
|
|
return valid;
|
|
}
|
|
|
|
// Casa compatibility pattern. Will be removed in the future.
|
|
// m / 49 / coin_type / account / change / address_index
|
|
if (address_n_count > 0 && address_n[0] == 49) {
|
|
if (check_known) {
|
|
valid = valid && (address_n_count == 5);
|
|
} else {
|
|
valid = valid && (address_n_count >= 2);
|
|
}
|
|
valid =
|
|
valid && check_cointype(coin, 0x80000000 | address_n[1], check_known);
|
|
if (check_script_type) {
|
|
valid = valid && (script_type == InputScriptType_SPENDP2SHWITNESS);
|
|
}
|
|
if (check_known) {
|
|
valid = valid && ((address_n[1] & 0x80000000) == 0);
|
|
valid = valid && (address_n[2] <= PATH_MAX_ACCOUNT);
|
|
valid = valid && (address_n[3] <= PATH_MAX_CHANGE);
|
|
valid = valid && (address_n[4] <= PATH_MAX_ADDRESS_INDEX);
|
|
}
|
|
return valid;
|
|
}
|
|
|
|
// we allow unknown paths only when a full check is not required
|
|
return level == CoinPathCheckLevel_BASIC;
|
|
}
|