d42d0a4dc7
This implementation is written in endian agnostic C code. No attempt at providing machine specific assembly code has been made. This implementation expands the evptests by including the test cases from RFC 5794 and ARIA official site rather than providing an individual test case. Support for ARIA has been integrated into the command line applications, but not TLS. Implemented modes are CBC, CFB1, CFB8, CFB128, CTR, ECB and OFB128. Reviewed-by: Andy Polyakov <appro@openssl.org> Reviewed-by: Rich Salz <rsalz@openssl.org> (Merged from https://github.com/openssl/openssl/pull/2337)
181 lines
4.8 KiB
Text
181 lines
4.8 KiB
Text
=pod
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=head1 NAME
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dsa - DSA key processing
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=head1 SYNOPSIS
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B<openssl> B<dsa>
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[B<-help>]
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[B<-inform PEM|DER>]
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[B<-outform PEM|DER>]
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[B<-in filename>]
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[B<-passin arg>]
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[B<-out filename>]
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[B<-passout arg>]
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[B<-aes128>]
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[B<-aes192>]
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[B<-aes256>]
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[B<-aria128>]
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[B<-aria192>]
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[B<-aria256>]
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[B<-camellia128>]
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[B<-camellia192>]
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[B<-camellia256>]
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[B<-des>]
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[B<-des3>]
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[B<-idea>]
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[B<-text>]
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[B<-noout>]
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[B<-modulus>]
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[B<-pubin>]
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[B<-pubout>]
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[B<-engine id>]
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=head1 DESCRIPTION
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The B<dsa> command processes DSA keys. They can be converted between various
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forms and their components printed out. B<Note> This command uses the
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traditional SSLeay compatible format for private key encryption: newer
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applications should use the more secure PKCS#8 format using the B<pkcs8>
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=head1 OPTIONS
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=over 4
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=item B<-help>
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Print out a usage message.
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=item B<-inform DER|PEM>
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This specifies the input format. The B<DER> option with a private key uses
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an ASN1 DER encoded form of an ASN.1 SEQUENCE consisting of the values of
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version (currently zero), p, q, g, the public and private key components
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respectively as ASN.1 INTEGERs. When used with a public key it uses a
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SubjectPublicKeyInfo structure: it is an error if the key is not DSA.
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The B<PEM> form is the default format: it consists of the B<DER> format base64
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encoded with additional header and footer lines. In the case of a private key
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PKCS#8 format is also accepted.
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=item B<-outform DER|PEM>
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This specifies the output format, the options have the same meaning as the
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B<-inform> option.
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=item B<-in filename>
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This specifies the input filename to read a key from or standard input if this
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option is not specified. If the key is encrypted a pass phrase will be
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prompted for.
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=item B<-passin arg>
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the input file password source. For more information about the format of B<arg>
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see the B<PASS PHRASE ARGUMENTS> section in L<openssl(1)>.
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=item B<-out filename>
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This specifies the output filename to write a key to or standard output by
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is not specified. If any encryption options are set then a pass phrase will be
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prompted for. The output filename should B<not> be the same as the input
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filename.
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=item B<-passout arg>
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the output file password source. For more information about the format of B<arg>
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see the B<PASS PHRASE ARGUMENTS> section in L<openssl(1)>.
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=item B<-aes128|-aes192|-aes256|-aria128|-aria192|-aria256|-camellia128|-camellia192|-camellia256|-des|-des3|-idea>
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These options encrypt the private key with the specified
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cipher before outputting it. A pass phrase is prompted for.
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If none of these options is specified the key is written in plain text. This
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means that using the B<dsa> utility to read in an encrypted key with no
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encryption option can be used to remove the pass phrase from a key, or by
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setting the encryption options it can be use to add or change the pass phrase.
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These options can only be used with PEM format output files.
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=item B<-text>
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prints out the public, private key components and parameters.
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=item B<-noout>
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this option prevents output of the encoded version of the key.
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=item B<-modulus>
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this option prints out the value of the public key component of the key.
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=item B<-pubin>
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by default a private key is read from the input file: with this option a
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public key is read instead.
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=item B<-pubout>
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by default a private key is output. With this option a public
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key will be output instead. This option is automatically set if the input is
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a public key.
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=item B<-engine id>
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specifying an engine (by its unique B<id> string) will cause B<dsa>
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to attempt to obtain a functional reference to the specified engine,
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thus initialising it if needed. The engine will then be set as the default
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for all available algorithms.
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=back
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=head1 NOTES
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The PEM private key format uses the header and footer lines:
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-----BEGIN DSA PRIVATE KEY-----
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-----END DSA PRIVATE KEY-----
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The PEM public key format uses the header and footer lines:
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-----BEGIN PUBLIC KEY-----
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-----END PUBLIC KEY-----
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=head1 EXAMPLES
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To remove the pass phrase on a DSA private key:
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openssl dsa -in key.pem -out keyout.pem
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To encrypt a private key using triple DES:
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openssl dsa -in key.pem -des3 -out keyout.pem
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To convert a private key from PEM to DER format:
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openssl dsa -in key.pem -outform DER -out keyout.der
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To print out the components of a private key to standard output:
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openssl dsa -in key.pem -text -noout
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To just output the public part of a private key:
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openssl dsa -in key.pem -pubout -out pubkey.pem
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=head1 SEE ALSO
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L<dsaparam(1)>, L<gendsa(1)>, L<rsa(1)>,
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L<genrsa(1)>
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=head1 COPYRIGHT
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Copyright 2000-2017 The OpenSSL Project Authors. All Rights Reserved.
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Licensed under the OpenSSL license (the "License"). 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 LICENSE in the source distribution or at
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L<https://www.openssl.org/source/license.html>.
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=cut
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