Decrypt Des file - then encrypt


 
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Operating Systems Solaris Decrypt Des file - then encrypt
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Old 09-07-2006
Decrypt Des file - then encrypt

Help..
I need to decrypt a file that was encrypted using DES 56 Bit.
I have the encryption key and the block size used but no idea what utility to use..

I then need to encrypt the file using pgp and another key I have.. againt I dont know what utility to use.

I am running solaris 9 ....

Any help would be appreciated. I understand how encryption works etc but dont know what utilities or commands to use on solaris to do this...
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CRYPT(3)						     Library Functions Manual							  CRYPT(3)

NAME
crypt, setkey, encrypt - DES encryption SYNOPSIS
char *crypt(key, salt) char *key, *salt; setkey(key) char *key; encrypt(block, edflag) char *block; DESCRIPTION
Crypt is the password encryption routine. It is based on the NBS Data Encryption Standard, with variations intended (among other things) to frustrate use of hardware implementations of the DES for key search. The first argument to crypt is normally a user's typed password. The second is a 2-character string chosen from the set [a-zA-Z0-9./]. The salt string is used to perturb the DES algorithm in one of 4096 different ways, after which the password is used as the key to encrypt repeatedly a constant string. The returned value points to the encrypted password, in the same alphabet as the salt. The first two char- acters are the salt itself. The other entries provide (rather primitive) access to the actual DES algorithm. The argument of setkey is a character array of length 64 containing only the characters with numerical value 0 and 1. If this string is divided into groups of 8, the low-order bit in each group is ignored, leading to a 56-bit key which is set into the machine. The argument to the encrypt entry is likewise a character array of length 64 containing 0's and 1's. The argument array is modified in place to a similar array representing the bits of the argument after having been subjected to the DES algorithm using the key set by setkey. The edflag flag is ignored; the argument can only be encrypted. SEE ALSO
passwd(1), passwd(5), login(1), getpass(3) BUGS
The return value points to static data whose content is overwritten by each call. 7th Edition August 12, 1986 CRYPT(3)

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