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How to decrypt a file in UNIX?


 
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Top Forums UNIX for Advanced & Expert Users How to decrypt a file in UNIX?
# 15  
Old 08-28-2013
Quote:
Originally Posted by hergp
If you look closely, you'll find, that the working string S will never be longer than the longest line of the input file plus 63.
You are right. There is a kernel constant called "MAX_LIN" in "/usr/sys/include/limits.h". If the file has lines longer than this "awk"s read will fail because this limitation is built into all line oriented utilities, including "awk" (and "sed", "fmt", "sort", "vi", ...).

I mentioned it because many people are not even aware of this intrinsic limitation, which might have different values across platforms, but is everywhere in place.

I hope this helps.

bakunin
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yhsm-decrypt-aead(1)					      General Commands Manual					      yhsm-decrypt-aead(1)

NAME
yhsm-decrypt-aead - Decrypt AEADs (with secrets for YubiKeys) SYNOPSIS
yhsm-decrypt-aead [options] --aes-key KEY file-or-dir [...] DESCRIPTION
Decrypt AEADs generated using a YubiHSM. NOTE that this requires knowledge of the AES key used in the YubiHSM. After a number of YubiKey secrets have been generated using yhsm-generate-keys(1) , this tool can decrypt them and produce a CSV file usable to personalize corresponding YubiKeys. OPTIONS
-v, --verbose Enable verbose operation. --debug Enable debug printout. --format str Select output format (raw or yubikey-csv). --print-filename Prefix any output with the input filename. --key-handle kh Key handle used when generated AEADs, if not stored in the AEAD file (AEAD generated with python-pyhsm 1.0.3 or lower). --aes-key hexstr AES key used to generate the AEADs. EXIT STATUS
0 OK 1 Fail BUGS
Report python-pyhsm/yhsm-decrypt-aead bugs in the issue tracker <https://github.com/Yubico/python-pyhsm/issues/> SEE ALSO
The python-pyhsm home page <https://github.com/Yubico/python-pyhsm/> YubiHSMs and YubiKeys can be obtained from Yubico <http://www.yubico.com/>. python-pyhsm June 2012 yhsm-decrypt-aead(1)

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