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securisec / chepy

Chepy is a python lib/cli equivalent of the awesome CyberChef tool.
GNU General Public License v3.0
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How to use chepy to implement the cfb encryption mode of aes? #25

Closed shengchenyang closed 2 years ago

shengchenyang commented 2 years ago

when I use CyberChef to implement the cfb encryption of aes, the corresponding encryption mode is not found in chepy.

An example of CyberChef is shown in the figure： image

But there is no cfb mode for aes in chepy: image

securisec commented 2 years ago

Thank you for opening the issue @shengchenyang . I have implemented CFB mode for AES. Do keep in mind that pythons default behavior uses CFB8 mode while CyberChef uses CFB128. Chepy implements CFB128 to stay inline with CyberChef.