openssl-passphrase-options(1) - NetBSD Manual Pages

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OPENSSL-PASSPHRASE-OPTIONS(1)       OpenSSL      OPENSSL-PASSPHRASE-OPTIONS(1)




NAME

       openssl-passphrase-options - Pass phrase options


SYNOPSIS

       openssl command [ options ... ] [ parameters ... ]


DESCRIPTION

       Several OpenSSL commands accept password arguments, typically using
       -passin and -passout for input and output passwords respectively. These
       allow the password to be obtained from a variety of sources. Both of
       these options take a single argument whose format is described below.
       If no password argument is given and a password is required then the
       user is prompted to enter one: this will typically be read from the
       current terminal with echoing turned off.

       Note that character encoding may be relevant, please see
       passphrase-encoding(7).


OPTIONS

   Pass Phrase Option Arguments
       Pass phrase arguments can be formatted as follows.

       pass:password
           The actual password is password. Since the password is visible to
           utilities (like 'ps' under Unix) this form should only be used
           where security is not important.

       env:var
           Obtain the password from the environment variable var. Since the
           environment of other processes is visible on certain platforms
           (e.g. ps under certain Unix OSes) this option should be used with
           caution.

       file:pathname
           Reads the password from the specified file pathname, which can be a
           regular file, device, or named pipe. Only the first line, up to the
           newline character, is read from the stream.

           If the same pathname argument is supplied to both -passin and
           -passout arguments, the first line will be used for the input
           password, and the next line will be used for the output password.

       fd:number
           Reads the password from the file descriptor number. This can be
           useful for sending data via a pipe, for example. The same line
           handling as described for file: applies to passwords read from file
           descriptors.

           fd: is not supported on Windows.

       stdin
           Reads the password from standard input. The same line handling as
           described for file: applies to passwords read from standard input.


COPYRIGHT

       Copyright 2000-2024 The OpenSSL Project Authors. All Rights Reserved.

       Licensed under the Apache License 2.0 (the "License").  You may not use
       this file except in compliance with the License.  You can obtain a copy
       in the file LICENSE in the source distribution or at
       <https://www.openssl.org/source/license.html>.



3.0.15                            2024-09-03     OPENSSL-PASSPHRASE-OPTIONS(1)