Change Details

PR description: ``` As far as I can tell this AES-128 code has never been in use in the project (outside of testing/benchmarking). The AES-256 code is used in CCrypter::Encrypt/CCrypter::Decrypt (src/wallet/crypter.cpp). Trivia: 0.15% of the project's C++ LOC count (excluding dependencies) is trimmed off ``` Backport of Core PR15663

PR description: ``` As far as I can tell this AES-128 code has never been in use in the project (outside of testing/benchmarking). The AES-256 code is used in CCrypter::Encrypt/CCrypter::Decrypt (src/wallet/crypter.cpp). Trivia: 0.15% of the project's C++ LOC count (excluding dependencies) is trimmed off ``` Backport of Core [[https://github.com/bitcoin/bitcoin/pull/15663 | PR15663]]

PR description: ``` As far as I can tell this AES-128 code has never been in use in the project (outside of testing/benchmarking). The AES-256 code is used in CCrypter::Encrypt/CCrypter::Decrypt (src/wallet/crypter.cpp). Trivia: 0.15% of the project's C++ LOC count (excluding dependencies) is trimmed off ``` Backport of Core [[https://github.com/bitcoin/bitcoin/pull/15663 | PR15663]]