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(1) User Commands makekey(1)NAME
makekey - generate encryption key
SYNOPSIS
/usr/lib/makekey
DESCRIPTION
makekey improves the usefulness of encryption schemes that depend on a key by increasing the amount of time required to search the key
space. It attempts to read 8 bytes for its key (the first eight input bytes), then it attempts to read 2 bytes for its salt (the last two
input bytes). The output depends on the input in a way intended to be difficult to compute (that is, 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 dig-
its, ., /, upper- and lower-case letters. The salt characters are repeated as the first two characters of the output. The remaining 11 out-
put 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 4,096 cryptographic machines all based on the
National Bureau of Standards DES algorithm, but broken in 4,096 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 output key bits in the result.
makekey is intended for programs that perform encryption. Usually, its input and output will be pipes.
SEE ALSO ed(1), vi(1), passwd(4)NOTES
makekey can produce different results depending upon whether the input is typed at the terminal or redirected from a file.
SunOS 5.11 3 Mar 2008 makekey(1)
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