Linux 2.4.21,2.4.22 and CryptoAPI

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Hi all,
I am a little confused about
cryptoapi implementation on kernel 2.4.21 and 2.4.22.

I can see a new submenu named 'Cryptographic options'
wich contains various digest algorithms, aes and other.

Does anyone can explain me what is happening?

The patch-int from ftp://ftp.kernel.org/pub/linux/kernel/people/hvr/testing
will no longer be required?

Does the current kernel version contain a stable (and usable) implementation 
of cipher algorithm like aes, twofish, blowfish and serpent ?

New kernel versions will ship with a full implemention of cryptoapi and will 
not need patch?

Actually I'm running a 2.4.20 with patch-int-2.4.20-1,
and I have about 120gb of encrypted data with aes-twofish since a year ago.
I had some problems applying the patch-int-2.4.21.0 to the kernel 2.4.21.
but now with 2.4.22 and patch-cryptoloop-hvr-2.4.22.0 I can see that the 
cryptoloop support is now located under block devices and all seems ok.

Does anyone can tell me if I can upgrade to kernel 2.4.22 with the last 
cryptoloop-hvr patch without losing my data and if the new cryptographic api
is backward compatible with my 2.4.19?


Thank you

- -- 
Alessandro Avagliano - GnuPG keyid 2460969F
[Key fingerprint: 41BB B286 82DD 6D74 EF43  9CF3 AC03 9586 2460 969F]

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-
Linux-crypto:  cryptography in and on the Linux system
Archive:       http://mail.nl.linux.org/linux-crypto/


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