204 lines
6.6 KiB
Plaintext
204 lines
6.6 KiB
Plaintext
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.\" ========================================================================
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.\"
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.IX Title "OPENSSL-PASSPHRASE-OPTIONS 1ossl"
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.TH OPENSSL-PASSPHRASE-OPTIONS 1ossl "2024-10-22" "3.4.0" "OpenSSL"
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.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.\" way too many mistakes in technical documents.
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.if n .ad l
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.nh
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.SH "NAME"
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openssl\-passphrase\-options \- Pass phrase options
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.SH "SYNOPSIS"
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.IX Header "SYNOPSIS"
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\&\fBopenssl\fR
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\&\fIcommand\fR
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[ \fIoptions\fR ... ]
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[ \fIparameters\fR ... ]
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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Several OpenSSL commands accept password arguments, typically using \fB\-passin\fR
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and \fB\-passout\fR for input and output passwords respectively. These allow
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the password to be obtained from a variety of sources. Both of these
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options take a single argument whose format is described below. If no
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password argument is given and a password is required then the user is
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prompted to enter one: this will typically be read from the current
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terminal with echoing turned off.
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.PP
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Note that character encoding may be relevant, please see
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\&\fBpassphrase\-encoding\fR\|(7).
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.SH "OPTIONS"
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.IX Header "OPTIONS"
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.SS "Pass Phrase Option Arguments"
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.IX Subsection "Pass Phrase Option Arguments"
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Pass phrase arguments can be formatted as follows.
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.IP "\fBpass:\fR\fIpassword\fR" 4
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.IX Item "pass:password"
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The actual password is \fIpassword\fR. Since the password is visible
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to utilities (like 'ps' under Unix) this form should only be used
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where security is not important.
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.IP "\fBenv:\fR\fIvar\fR" 4
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.IX Item "env:var"
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Obtain the password from the environment variable \fIvar\fR. Since
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the environment of other processes is visible on certain platforms
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(e.g. ps under certain Unix OSes) this option should be used with caution.
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.IP "\fBfile:\fR\fIpathname\fR" 4
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.IX Item "file:pathname"
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Reads the password from the specified file \fIpathname\fR, which can be a regular
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file, device, or named pipe. Only the first line, up to the newline character,
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is read from the stream.
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.Sp
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If the same \fIpathname\fR argument is supplied to both \fB\-passin\fR and \fB\-passout\fR
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arguments, the first line will be used for the input password, and the next
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line will be used for the output password.
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.IP "\fBfd:\fR\fInumber\fR" 4
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.IX Item "fd:number"
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Reads the password from the file descriptor \fInumber\fR. This can be useful for
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sending data via a pipe, for example. The same line handling as described for
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\&\fBfile:\fR applies to passwords read from file descriptors.
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.Sp
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\&\fBfd:\fR is not supported on Windows.
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.IP "\fBstdin\fR" 4
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.IX Item "stdin"
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Reads the password from standard input. The same line handling as described for
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\&\fBfile:\fR applies to passwords read from standard input.
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.SH "COPYRIGHT"
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.IX Header "COPYRIGHT"
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Copyright 2000\-2024 The OpenSSL Project Authors. All Rights Reserved.
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.PP
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Licensed under the Apache License 2.0 (the \*(L"License\*(R"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file \s-1LICENSE\s0 in the source distribution or at
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<https://www.openssl.org/source/license.html>.
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