The public key in OpenPGP format stores lists of preferred symmetric, hash, and compression algorithms. The lists are in preference order, and any algorithm in the list isn't supported by the client.

I don't see any easy way to get this information fron Crypt::OpenPGP interface. The module really should use these lists if available to choose the algorithms it uses when encrypting messages.

In reply to Re: Crypt::OpenPGP - determining which cipher to use by iburrell
in thread Crypt::OpenPGP - determining which cipher to use by hv

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