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makekey(8) [netbsd man page]

MAKEKEY(8)						    BSD System Manager's Manual 						MAKEKEY(8)

NAME
makekey -- make encrypted keys or passwords SYNOPSIS
makekey DESCRIPTION
makekey encrypts a key and salt which it reads from the standard input and writes the result to the standard output. The key is expected to be eight bytes; the salt is expected to be two bytes. See crypt(3) for more information on what characters the key and salt can contain and how the encrypted value is calculated. SEE ALSO
login(1), crypt(3) HISTORY
A makekey command appeared in Version 7 AT&T UNIX. BSD
December 11, 1993 BSD

Check Out this Related Man Page

MAKEKEY(8)						      System Manager's Manual							MAKEKEY(8)

NAME
makekey - generate encryption key SYNOPSIS
/usr/lib/makekey DESCRIPTION
Makekey improves the usefulness of encryption schemes depending on a key by increasing the amount of time required to search the key space. It reads 10 bytes from its standard input, and writes 13 bytes on its standard output. The output depends on the input in a way intended to be difficult to compute (i.e. to require a substantial fraction of a second). The first eight input bytes (the input key) can be arbitrary ASCII characters. The last two (the salt) are best chosen from the set of digits, upper- and lower-case letters, and `.' and `/'. The salt characters are repeated as the first two characters of the output. The remaining 11 output characters are chosen from the same set as the salt and constitute the output key. The transformation performed is essentially the following: the salt is used to select one of 4096 cryptographic machines all based on the National Bureau of Standards DES algorithm, but modified in 4096 different ways. Using the input key as key, a constant string is fed into the machine and recirculated a number of times. The 64 bits that come out are distributed into the 66 useful key bits in the result. Makekey is intended for programs that perform encryption (e.g. ed and crypt(1)). Usually its input and output will be pipes. SEE ALSO
crypt(1), ed(1) MAKEKEY(8)
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