sek1ro/libbasen
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

fix(base58): decodeCheck: exception if buff.size() < 4

Browse Source
This commit is contained in:
SEK1RO
2024-09-29 13:34:09 +03:00
parent fb15184848
commit d8671350a4
1 changed files with 4 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/base58.cpp
View File

@ -69,6 +69,10 @@ namespace base58
std::vector<uint8_t> decodeCheck(std::string_view str) std::vector<uint8_t> decodeCheck(std::string_view str)
{ {
std::vector<uint8_t> buff(base58::decode(str)); std::vector<uint8_t> buff(base58::decode(str));
if (buff.size() < 4)
{
throw std::logic_error("base58::decodeCheck: incorrect padding");
}
std::span<uint8_t> data(buff.begin(), buff.end() - 4); std::span<uint8_t> data(buff.begin(), buff.end() - 4);
std::span<uint8_t> dhash(buff.end() - 4, buff.end()); std::span<uint8_t> dhash(buff.end() - 4, buff.end());
if (!std::equal(dhash.begin(), dhash.end(), hash::sha256(hash::sha256(data)).begin())) if (!std::equal(dhash.begin(), dhash.end(), hash::sha256(hash::sha256(data)).begin()))