[ https://issues.apache.org/jira/browse/ARROW-16202 ]
Antoine Pitrou deleted comment on ARROW-16202:
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was (Author: pitrou):
Also, {{~AesEncryptor()}} and {{~AesDecryptor()}} should both call
{{Wipeout()}}.
> [C++][Parquet] WipeOutDecryptionKeys doesn't securely wipe out keys
> -------------------------------------------------------------------
>
> Key: ARROW-16202
> URL: https://issues.apache.org/jira/browse/ARROW-16202
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++, Parquet
> Affects Versions: 7.0.0
> Reporter: Antoine Pitrou
> Priority: Critical
> Fix For: 8.0.0
>
>
> {{InternalFileDecryptor::WipeOutDecryptionKeys()}} merely call
> {{std::string::clear}} to dispose of the decryption key contents, but that
> method is not guaranteed to clear memory (it probably doesn't, actually).
> We should probably devise a portable wrapper function for the various
> OS-specific memory clearing utilities.
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