CRYPT(1) CRYPT(1)
NAME
crypt, aescbc - data encryption
SYNOPSIS
crypt [ -d ] [ -a alg[/alg] ] [ -f keyfile ] [ -k key ] [ -?
]
auth/aescbc [ -d ] [ -e ] [ -f keyfile ] [ -k key ]
DESCRIPTION
Crypt reads a data stream from its standard input and writes
it encrypted to standard output, preceded by a header that
gives details of the algorithm used. If the -d option is
given, crypt decrypts the standard input instead, writing
the clear text on standard output. The options are:
-a alg...
Specifies one or two algorithms, for encryption and/or
digests. The algorithms are those supported by ssl(3).
If two algorithms are given, they should be separated
by a slash (/) or space, following the conventions of
ssl(3).
-f keyfile
Read the encryption key from the given file, which
obviously should be carefully protected. Trailing new-
lines are ignored.
-k key
Use key as the encryption key.
-? Print a list of the available encryption and digest
algorithms.
If the secret key is not otherwise supplied, crypt prompts
for it on /dev/cons. There is no need to give algorithms
when decrypting, because they are taken from the header.
The default algorithm is md5/ideacbc. It might be necessary
to change that when using crypt for commercial purposes, as
noted in keyring-crypt(2).
Aescbc encrypts and decrypts using AES (Rijndael) in cypher
block chaining (CBC) mode. It uses input and output formats
compatible with Plan 9's aescbc command; it also accepts
input in the format used by keyfs(4) and Plan 9's secstore.
The -e option causes it to encrypt; the -d option to
decrypt. The other options are just as for crypt.
SOURCE
/appl/cmd/crypt.b
Page 1 Plan 9 (printed 4/19/24)
CRYPT(1) CRYPT(1)
/appl/cmd/auth/aescbc.b
SEE ALSO
ssl(3), keyfs(4)
Page 2 Plan 9 (printed 4/19/24)