Add support for 3DES for key-protected content

thecatkitty / lavender

Multiplatform slideshow application

https://celones.pl/lavender

MIT License

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Add support for 3DES for key-protected content #131

Open eldan-dex opened 11 months ago

eldan-dex commented 11 months ago

With 25-character keys, there is enough data to derive two 56-bit keys for 3DES in EDE mode - Encrypt_K1(Decrypt_K2(Encrypt_K1(data))), as described under "Keying option 2" in https://en.wikipedia.org/wiki/Triple_DES