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enh(Foundation): add Poco::secureClear() for securely clearing a string by first overwriting it with zeroes.

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This commit is contained in:
Günter Obiltschnig
2024-06-11 10:42:49 +02:00
parent bc29f30e5c
commit 3092ba5455
1 changed files with 12 additions and 0 deletions
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12
Foundation/include/Poco/String.h
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@@ -763,6 +763,18 @@ struct CILess
}; };
template <typename T>
void secureClear(T& str)
/// Securely clears a string's contents by first overwriting
/// the entire buffer (up to capacity) with zeroes, then
/// clearing the string.
{
str.resize(str.capacity());
std::fill(str.begin(), str.end(), typename T::value_type());
str.clear();
}
} // namespace Poco } // namespace Poco
#if defined(__clang__) && ((__clang_major__ > 3) || (__clang_major__ == 3 && __clang_minor__ >= 6)) #if defined(__clang__) && ((__clang_major__ > 3) || (__clang_major__ == 3 && __clang_minor__ >= 6))