On Sat, 22 Aug 2020 15:43:56 -0500 Greg Marks <gtma...@gmail.com> wrote:
> One cross-platform encryption method would be to use OpenSSL > (https://www.openssl.org/). The Linux user might use the following > commands. > > Encryption: > openssl aes-256-cbc -pbkdf2 -iter 1000000 -in plaintext.txt -out > ciphertext.txt Decryption: > openssl aes-256-cbc -pbkdf2 -iter 1000000 -d -in ciphertext.txt > -out plaintext.txt > > I think the two commands will be the same on a Windows machine. > Assuming both sides have agreed on a decent password, this should be > very secure. The main difficulty for a non-technical Windows user > would probably be installing OpenSSL; the easiest way might be via a > trusted third-party binary distribution. > > I'm assuming the OP is content with a symmetric cipher (he or she > didn't say). > I think the whole thread hinges on the OP not telling us what threats the encryption should protect against: is he trying to hide something from the FBI/MI5/Mossad or from his nosy big sister? If the latter, a passworded zip file is probably sufficient, and all currently supported versions of Windows do zip natively. -- Joe
