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135 lines
3.2 KiB
135 lines
3.2 KiB
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=pod |
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=head1 NAME |
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pkey - public or private key processing tool |
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=head1 SYNOPSIS |
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B<openssl> B<pkey> |
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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<-cipher>] |
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[B<-text>] |
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[B<-text_pub>] |
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[B<-noout>] |
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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<pkey> command processes public or private keys. They can be converted |
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between various forms and their components printed out. |
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=head1 COMMAND OPTIONS |
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=over 4 |
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=item B<-inform DER|PEM> |
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This specifies the input format DER or PEM. |
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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)|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 if this |
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option is not specified. If any encryption options are set then a pass phrase |
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will be 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 password> |
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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)|openssl(1)>. |
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=item B<-cipher> |
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These options encrypt the private key with the supplied cipher. Any algorithm |
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name accepted by EVP_get_cipherbyname() is acceptable such as B<des3>. |
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=item B<-text> |
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prints out the various public or private key components in |
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plain text in addition to the encoded version. |
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=item B<-text_pub> |
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print out only public key components even if a private key is being processed. |
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=item B<-noout> |
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do not output the encoded version 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 |
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option a 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 |
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the input is 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<pkey> |
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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 EXAMPLES |
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To remove the pass phrase on an RSA private key: |
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openssl pkey -in key.pem -out keyout.pem |
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To encrypt a private key using triple DES: |
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openssl pkey -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 pkey -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 pkey -in key.pem -text -noout |
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To print out the public components of a private key to standard output: |
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openssl pkey -in key.pem -text_pub -noout |
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To just output the public part of a private key: |
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openssl pkey -in key.pem -pubout -out pubkey.pem |
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=head1 SEE ALSO |
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L<genpkey(1)|genpkey(1)>, L<rsa(1)|rsa(1)>, L<pkcs8(1)|pkcs8(1)>, |
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L<dsa(1)|dsa(1)>, L<genrsa(1)|genrsa(1)>, L<gendsa(1)|gendsa(1)> |
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=cut
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