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Diffstat (limited to 'ssh-rand-helper.0')
-rw-r--r-- | ssh-rand-helper.0 | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/ssh-rand-helper.0 b/ssh-rand-helper.0 new file mode 100644 index 000000000000..429582b78c0a --- /dev/null +++ b/ssh-rand-helper.0 @@ -0,0 +1,51 @@ +SSH-RAND-HELPER(8) OpenBSD System Manager's Manual SSH-RAND-HELPER(8) + +NAME + ssh-rand-helper - random number gatherer for OpenSSH + +SYNOPSIS + ssh-rand-hlper [-vxXh] [-b bytes] + +DESCRIPTION + ssh-rand-helper is a small helper program used by ssh(1), ssh-add(1), + ssh-agent(1), ssh-keygen(1), ssh-keyscan(1) and sshd(8) to gather random + numbers of cryptographic quality if the openssl(4) library has not been + configured to provide them itself. + + Normally ssh-rand-helper will generate a strong random seed and provide + it to the calling program via standard output. If standard output is a + tty, ssh-rand-helper will instead print the seed in hexidecimal format + unless told otherwise. + + ssh-rand-helper will by default gather random numbers from the system + commands listed in /etc/ssh/ssh_prng_cmds. The output of each of the + commands listed will be hashed and used to generate a random seed for the + calling program. ssh-rand-helper will also store seed files in + ~/.ssh/prng_seed between executions. + + Alternately, ssh-rand-helper may be configured at build time to collect + random numbers from a EGD/PRNGd server via a unix domain or localhost tcp + socket. + + This program is not intended to be run by the end-user, so the few com- + mandline options are for debugging purposes only. + + -b bytes + Specify the number of random bytes to include in the output. + + -x Output a hexidecimal instead of a binary seed. + + -X Force output of a binary seed, even if standard output is a tty + + -v Turn on debugging message. Multiple -v options will increase the + debugging level. + + -h Display a summary of options. + +AUTHORS + Damien Miller <djm@mindrot.org> + +SEE ALSO + ssh(1), ssh-add(1), ssh-keygen(1), sshd(8) + +OpenBSD 4.1 April 14, 2002 1 |