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by Noah Meyerhans
Import upstream version 3.8.1p1 |
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SSH-RAND-HELPER(8) OpenBSD System Manager's Manual SSH-RAND-HELPER(8) |
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NAME
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1.13.1
by Colin Watson
Import upstream version 4.6p1 |
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ssh-rand-helper - random number gatherer for OpenSSH |
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1
by Noah Meyerhans
Import upstream version 3.8.1p1 |
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SYNOPSIS
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ssh-rand-hlper [-vxXh] [-b bytes] |
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DESCRIPTION
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ssh-rand-helper is a small helper program used by ssh(1), ssh-add(1), |
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ssh-agent(1), ssh-keygen(1), ssh-keyscan(1) and sshd(8) to gather random |
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numbers of cryptographic quality if the openssl(4) library has not been |
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configured to provide them itself. |
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Normally ssh-rand-helper will generate a strong random seed and provide |
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it to the calling program via standard output. If standard output is a |
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tty, ssh-rand-helper will instead print the seed in hexidecimal format |
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unless told otherwise. |
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ssh-rand-helper will by default gather random numbers from the system |
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commands listed in /etc/ssh/ssh_prng_cmds. The output of each of the |
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commands listed will be hashed and used to generate a random seed for the |
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calling program. ssh-rand-helper will also store seed files in |
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~/.ssh/prng_seed between executions. |
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Alternately, ssh-rand-helper may be configured at build time to collect |
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random numbers from a EGD/PRNGd server via a unix domain or localhost tcp |
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socket. |
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This program is not intended to be run by the end-user, so the few com- |
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mandline options are for debugging purposes only. |
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-b bytes |
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Specify the number of random bytes to include in the output. |
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-x Output a hexidecimal instead of a binary seed. |
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-X Force output of a binary seed, even if standard output is a tty |
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-v Turn on debugging message. Multiple -v options will increase the |
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1.13.1
by Colin Watson
Import upstream version 4.6p1 |
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debugging level. |
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-h Display a summary of options. |
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1
by Noah Meyerhans
Import upstream version 3.8.1p1 |
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AUTHORS
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Damien Miller <djm@mindrot.org> |
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SEE ALSO |
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ssh(1), ssh-add(1), ssh-keygen(1), sshd(8) |
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1.13.5
by Colin Watson
Import upstream version 5.3p1 |
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OpenBSD 4.6 April 14, 2002 1 |