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

2024-09-29 13:34:09 +03:00
parent fb15184848
commit d8671350a4
1 changed files with 4 additions and 0 deletions
--- a/src/base58.cpp
+++ b/src/base58.cpp
@ -69,6 +69,10 @@ namespace base58
    std::vector<uint8_t> decodeCheck(std::string_view 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> dhash(buff.end() - 4, buff.end());
        if (!std::equal(dhash.begin(), dhash.end(), hash::sha256(hash::sha256(data)).begin()))