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IDEA CBC not supported by python cryptography #2

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marten-der-Eisbaer opened this issue Oct 24, 2023 · 1 comment
Closed

IDEA CBC not supported by python cryptography #2

marten-der-Eisbaer opened this issue Oct 24, 2023 · 1 comment

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@marten-der-Eisbaer
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marten-der-Eisbaer commented Oct 24, 2023

IDEA CBC is currently not supported enabled by openssl. Thus python cryptography does not support IDEA CBC, due to cryptography using openssl as a backend.
Error Message: cipher IDEA in CBC mode is not supported by this backend (Your version of OpenSSL may be too old.)

@marten-der-Eisbaer
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If you want to decrypt IDEA Ciphersuites the installed Python Cryptography Library has to be compiled with an Openssl Version which supports the IDEA Cipher.
You can compile Python Cryptography in an virtual environment with a custom Openssl which has IDEA enabled, for reference see https://cryptography.io/en/latest/installation/#building-cryptography-on-windows and https://cryptography.io/en/latest/installation/#building-cryptography-on-linux

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