Automatically generated by Pod::Man 4.14 (Pod::Simple 3.40)

Standard preamble:
========================================================================
..

..

.. Set up some character translations and predefined strings. \*(-- will
give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
double quote, and \*(R" will give a right double quote. \*(C+ will
give a nicer C++. Capital omega is used to do unbreakable dashes and
therefore won't be available. \*(C` and \*(C' expand to `' in nroff,
nothing in troff, for use with C<>.
.tr \(*W- . ds -- \(*W- . ds PI pi . if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch . if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch . ds L" "" . ds R" "" . ds C` "" . ds C' "" 'br\} . ds -- \|\(em\| . ds PI \(*p . ds L" `` . ds R" '' . ds C` . ds C' 'br\}
Escape single quotes in literal strings from groff's Unicode transform.

If the F register is >0, we'll generate index entries on stderr for
titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
entries marked with X<> in POD. Of course, you'll have to process the
output yourself in some meaningful fashion.

Avoid warning from groff about undefined register 'F'.
.. .nr rF 0 . if \nF \{\ . de IX . tm Index:\\$1\t\\n%\t"\\$2" .. . if !\nF==2 \{\ . nr % 0 . nr F 2 . \} . \} .\} .rr rF
Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
Fear. Run. Save yourself. No user-serviceable parts.
. \" fudge factors for nroff and troff . ds #H 0 . ds #V .8m . ds #F .3m . ds #[ \f1 . ds #] .\} . ds #H ((1u-(\\\\n(.fu%2u))*.13m) . ds #V .6m . ds #F 0 . ds #[ \& . ds #] \& .\} . \" simple accents for nroff and troff . ds ' \& . ds ` \& . ds ^ \& . ds , \& . ds ~ ~ . ds / .\} . ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u" . ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u' . ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u' . ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u' . ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u' . ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u' .\} . \" troff and (daisy-wheel) nroff accents . \" corrections for vroff . \" for low resolution devices (crt and lpr) \{\ . ds : e . ds 8 ss . ds o a . ds d- d\h'-1'\(ga . ds D- D\h'-1'\(hy . ds th \o'bp' . ds Th \o'LP' . ds ae ae . ds Ae AE .\} ========================================================================

Title "OPENSSL-RSA 1" For nroff, turn off justification. Always turn off hyphenation; it makes
way too many mistakes in technical documents.
openssl-rsa - RSA key processing command Header "SYNOPSIS" \fBopenssl rsa [-help] [-inform \s-1DER\s0|\s-1PEM\s0|P12|\s-1ENGINE\s0] [-outform \s-1DER\s0|\s-1PEM\s0] [-in filename|uri] [-passin arg] [-out filename] [-passout arg] [-aes128] [-aes192] [-aes256] [-aria128] [-aria192] [-aria256] [-camellia128] [-camellia192] [-camellia256] [-des] [-des3] [-idea] [-text] [-noout] [-modulus] [-traditional] [-check] [-pubin] [-pubout] [-RSAPublicKey_in] [-RSAPublicKey_out] [-pvk-strong] [-pvk-weak] [-pvk-none] [-engine id] [-provider name] [-provider-path path] [-propquery propq] Header "DESCRIPTION" This command processes \s-1RSA\s0 keys. They can be converted between various forms and their components printed out. Header "OPTIONS" Item "-help" Print out a usage message. Item "-inform DER|PEM|P12|ENGINE" The key input format; unspecified by default. See openssl-format-options\|(1) for details. Item "-outform DER|PEM" The key output format; the default is \s-1PEM\s0. See openssl-format-options\|(1) for details. Item "-traditional" When writing a private key, use the traditional PKCS#1 format instead of the PKCS#8 format. Item "-in filename|uri" This specifies the input to read a key from or standard input if this option is not specified. If the key is encrypted a pass phrase will be prompted for. Item "-passin arg, -passout arg" The password source for the input and output file. For more information about the format of arg see openssl-passphrase-options\|(1). Item "-out filename" This specifies the output filename to write a key to or standard output if this option is not specified. If any encryption options are set then a pass phrase will be prompted for. The output filename should not be the same as the input filename. Item "-aes128, -aes192, -aes256, -aria128, -aria192, -aria256, -camellia128, -camellia192, -camellia256, -des, -des3, -idea" These options encrypt the private key with the specified cipher before outputting it. A pass phrase is prompted for. If none of these options is specified the key is written in plain text. This means that this command can be used to remove the pass phrase from a key by not giving any encryption option is given, or to add or change the pass phrase by setting them. These options can only be used with \s-1PEM\s0 format output files. Item "-text" Prints out the various public or private key components in plain text in addition to the encoded version. Item "-noout" This option prevents output of the encoded version of the key. Item "-modulus" This option prints out the value of the modulus of the key. Item "-check" This option checks the consistency of an \s-1RSA\s0 private key. Item "-pubin" By default a private key is read from the input file: with this option a public key is read instead. Item "-pubout" By default a private key is output: with this option a public key will be output instead. This option is automatically set if the input is a public key. Item "-RSAPublicKey_in, -RSAPublicKey_out" Like -pubin and -pubout except RSAPublicKey format is used instead. Item "-pvk-strong" Enable 'Strong' \s-1PVK\s0 encoding level (default). Item "-pvk-weak" Enable 'Weak' \s-1PVK\s0 encoding level. Item "-pvk-none" Don't enforce \s-1PVK\s0 encoding. Item "-engine id" See \*(L"Engine Options\*(R" in openssl\|(1). This option is deprecated. Item "-provider name"

0

Item "-provider-path path" Item "-propquery propq"

See \*(L"Provider Options\*(R" in openssl\|(1), provider\|(7), and property\|(7).

Header "NOTES" The openssl-pkey\|(1) command is capable of performing all the operations this command can, as well as supporting other public key types. Header "EXAMPLES" The documentation for the openssl-pkey\|(1) command contains examples equivalent to the ones listed here.

To remove the pass phrase on an \s-1RSA\s0 private key:

.Vb 1 openssl rsa -in key.pem -out keyout.pem .Ve

To encrypt a private key using triple \s-1DES:\s0

.Vb 1 openssl rsa -in key.pem -des3 -out keyout.pem .Ve

To convert a private key from \s-1PEM\s0 to \s-1DER\s0 format:

.Vb 1 openssl rsa -in key.pem -outform DER -out keyout.der .Ve

To print out the components of a private key to standard output:

.Vb 1 openssl rsa -in key.pem -text -noout .Ve

To just output the public part of a private key:

.Vb 1 openssl rsa -in key.pem -pubout -out pubkey.pem .Ve

Output the public part of a private key in RSAPublicKey format:

.Vb 1 openssl rsa -in key.pem -RSAPublicKey_out -out pubkey.pem .Ve

Header "BUGS" There should be an option that automatically handles .key files, without having to manually edit them. Header "SEE ALSO" \fBopenssl\|(1), \fBopenssl-pkey\|(1), \fBopenssl-pkcs8\|(1), \fBopenssl-dsa\|(1), \fBopenssl-genrsa\|(1), \fBopenssl-gendsa\|(1) Header "HISTORY" The -engine option was deprecated in OpenSSL 3.0. Header "COPYRIGHT" Copyright 2000-2021 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the Apache License 2.0 (the \*(L"License\*(R"). You may not use this file except in compliance with the License. You can obtain a copy in the file \s-1LICENSE\s0 in the source distribution or at <https://www.openssl.org/source/license.html>.