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2c789c82
编写于
7月 21, 2003
作者:
B
Bodo Möller
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manpages for 'openssl ec' and 'openssl ecparam'
Submitted by: Nils Larsch
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=pod
=head1 NAME
ec - EC key processing
=head1 SYNOPSIS
B<openssl> B<ec>
[B<-inform PEM|DER>]
[B<-outform PEM|DER>]
[B<-in filename>]
[B<-passin arg>]
[B<-out filename>]
[B<-passout arg>]
[B<-des>]
[B<-des3>]
[B<-idea>]
[B<-text>]
[B<-noout>]
[B<-param_out>]
[B<-pubin>]
[B<-pubout>]
[B<-conv_form arg>]
[B<-param_enc arg>]
[B<-engine id>]
=head1 DESCRIPTION
The B<ec> command processes EC keys. They can be converted between various
forms and their components printed out. B<Note> OpenSSL uses the
private key format specified in 'SEC 1: Elliptic Curve Cryptography'
(http://www.secg.org/). To convert a OpenSSL EC private key into the
PKCS#8 private key format use the B<pkcs8> command.
=head1 COMMAND OPTIONS
=over 4
=item B<-inform DER|PEM>
This specifies the input format. The B<DER> option with a private key uses
an ASN.1 DER encoded SEC1 private key. When used with a public key it
uses the SubjectPublicKeyInfo structur as specified in RFC 3280.
The B<PEM> form is the default format: it consists of the B<DER> format base64
encoded with additional header and footer lines. In the case of a private key
PKCS#8 format is also accepted.
=item B<-outform DER|PEM>
This specifies the output format, the options have the same meaning as the
B<-inform> option.
=item B<-in filename>
This specifies the input filename 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 B<-passin arg>
the input file password source. For more information about the format of B<arg>
see the B<PASS PHRASE ARGUMENTS> section in L<openssl(1)|openssl(1)>.
=item B<-out filename>
This specifies the output filename to write a key to or standard output by
is not specified. If any encryption options are set then a pass phrase will be
prompted for. The output filename should B<not> be the same as the input
filename.
=item B<-passout arg>
the output file password source. For more information about the format of B<arg>
see the B<PASS PHRASE ARGUMENTS> section in L<openssl(1)|openssl(1)>.
=item B<-des|-des3|-idea>
These options encrypt the private key with the DES, triple DES, IDEA or
any other cipher supported by OpenSSL 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 using the B<ec> utility to read in an encrypted key with no
encryption option can be used to remove the pass phrase from a key, or by
setting the encryption options it can be use to add or change the pass phrase.
These options can only be used with PEM format output files.
=item B<-text>
prints out the public, private key components and parameters.
=item B<-noout>
this option prevents output of the encoded version of the key.
=item B<-modulus>
this option prints out the value of the public key component of the key.
=item B<-pubin>
by default a private key is read from the input file: with this option a
public key is read instead.
=item B<-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 B<-conv_form>
This specifies how the points on the elliptic curve are converted
into octet strings. Possible values are: B<compressed> (the default
value), B<uncompressed> and B<hybrid>. For more information regarding
the point conversion forms please read the X9.62 standard.
B<Note> Due to patent issues the B<compressed> option is disabled
by default for binary curves and can be enabled by defining
the preprocessor macro B<OPENSSL_EC_BIN_PT_COMP> at compile time.
=item B<-param_enc arg>
This specifies how the elliptic curve parameters are encoded.
Possible value are: B<named_curve>, i.e. the ec parameters are
specified by a OID, or B<explicit> where the ec parameters are
explicitly given (see RFC 3279 for the definition of the
EC parameters structures). The default value is B<named_curve>.
B<Note> the B<implicitlyCA> alternative ,as specified in RFC 3279,
is currently not implemented in OpenSSL.
=item B<-engine id>
specifying an engine (by it's unique B<id> string) will cause B<req>
to attempt to obtain a functional reference to the specified engine,
thus initialising it if needed. The engine will then be set as the default
for all available algorithms.
=back
=head1 NOTES
The PEM private key format uses the header and footer lines:
-----BEGIN EC PRIVATE KEY-----
-----END EC PRIVATE KEY-----
The PEM public key format uses the header and footer lines:
-----BEGIN PUBLIC KEY-----
-----END PUBLIC KEY-----
=head1 EXAMPLES
To encrypt a private key using triple DES:
openssl ec -in key.pem -des3 -out keyout.pem
To convert a private key from PEM to DER format:
openssl ec -in key.pem -outform DER -out keyout.der
To print out the components of a private key to standard output:
openssl ec -in key.pem -text -noout
To just output the public part of a private key:
openssl ec -in key.pem -pubout -out pubkey.pem
To change the parameters encoding to B<explicit>:
openssl ec -in key.pem -param_enc explicit -out keyout.pem
To change the point conversion form to B<compressed>:
openssl ec -in key.pem -conv_form compressed -out keyout.pem
=head1 SEE ALSO
L<ecparam(1)|ecparam(1)>, L<dsa(1)|dsa(1)>, L<rsa(1)|rsa(1)>
=head1 HISTORY
The ec command was first introduced in OpenSSL 0.9.8.
=head1 AUTHOR
Nils Larsch for the OpenSSL project (http://www.openssl.org).
=cut
doc/apps/ecparam.pod
0 → 100644
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2c789c82
=pod
=head1 NAME
ecparam - EC parameter manipulation and generation
=head1 SYNOPSIS
B<openssl ecparam>
[B<-inform DER|PEM>]
[B<-outform DER|PEM>]
[B<-in filename>]
[B<-out filename>]
[B<-noout>]
[B<-text>]
[B<-C>]
[B<-check>]
[B<-name arg>]
[B<-list_curve>]
[B<-conv_form arg>]
[B<-param_enc arg>]
[B<-no_seed>]
[B<-rand file(s)>]
[B<-genkey>]
[B<-engine id>]
=head1 DESCRIPTION
This command is used to manipulate or generate EC parameter files.
=head1 OPTIONS
=over 4
=item B<-inform DER|PEM>
This specifies the input format. The B<DER> option uses an ASN.1 DER encoded
form compatible with RFC 3279 EcpkParameters. The PEM form is the default
format: it consists of the B<DER> format base64 encoded with additional
header and footer lines.
=item B<-outform DER|PEM>
This specifies the output format, the options have the same meaning as the
B<-inform> option.
=item B<-in filename>
This specifies the input filename to read parameters from or standard input if
this option is not specified.
=item B<-out filename>
This specifies the output filename parameters to. Standard output is used
if this option is not present. The output filename should B<not> be the same
as the input filename.
=item B<-noout>
This option inhibits the output of the encoded version of the parameters.
=item B<-text>
This option prints out the EC parameters in human readable form.
=item B<-C>
This option converts the EC parameters into C code. The parameters can then
be loaded by calling the B<get_ec_group_XXX()> function.
=item B<-check>
Validate the elliptic curve parameters.
=item B<-name arg>
Use the EC parameters with the specified 'short' name. Use B<-list_curves>
to get a list of all currently implemented EC parameters.
=item B<-list_curves>
If this options is specified B<ecparam> will print out a list of all
currently implemented EC parameters names and exit.
=item B<-conv_form>
This specifies how the points on the elliptic curve are converted
into octet strings. Possible values are: B<compressed> (the default
value), B<uncompressed> and B<hybrid>. For more information regarding
the point conversion forms please read the X9.62 standard.
B<Note> Due to patent issues the B<compressed> option is disabled
by default for binary curves and can be enabled by defining
the preprocessor macro B<OPENSSL_EC_BIN_PT_COMP> at compile time.
=item B<-param_enc arg>
This specifies how the elliptic curve parameters are encoded.
Possible value are: B<named_curve>, i.e. the ec parameters are
specified by a OID, or B<explicit> where the ec parameters are
explicitly given (see RFC 3279 for the definition of the
EC parameters structures). The default value is B<named_curve>.
B<Note> the B<implicitlyCA> alternative ,as specified in RFC 3279,
is currently not implemented in OpenSSL.
=item B<-no_seed>
This option inhibits that the 'seed' for the parameter generation
is included in the ECParameters structure (see RFC 3279).
=item B<-genkey>
This option will generate a EC private key using the specified parameters.
=item B<-rand file(s)>
a file or files containing random data used to seed the random number
generator, or an EGD socket (see L<RAND_egd(3)|RAND_egd(3)>).
Multiple files can be specified separated by a OS-dependent character.
The separator is B<;> for MS-Windows, B<,> for OpenVMS, and B<:> for
all others.
=item B<-engine id>
specifying an engine (by it's unique B<id> string) will cause B<req>
to attempt to obtain a functional reference to the specified engine,
thus initialising it if needed. The engine will then be set as the default
for all available algorithms.
=back
=head1 NOTES
PEM format EC parameters use the header and footer lines:
-----BEGIN EC PARAMETERS-----
-----END EC PARAMETERS-----
OpenSSL is currently not able to generate new groups and therefore
B<ecparam> can only create EC parameters from known (named) curves.
=head1 EXAMPLES
To create EC parameters with the group 'prime192v1':
openssl ec -out ec_param.pem -name prime192v1
To create EC parameters with explicit parameters:
openssl ec -out ec_param.pem -name prime192v1 -param_enc explicit
To validate given EC parameters:
openssl ec -in ec_param.pem -check
To create EC parameters and a private key:
openssl ec -out ec_key.pem -name prime192v1 -genkey
To change the point encoding to 'compressed':
openssl ec -in ec_in.pem -out ec_out.pem -conv_form compressed
To print out the EC parameters to standard output:
openssl ec -in ec_param.pem -noout -text
=head1 SEE ALSO
L<ec(1)|ec(1)>, L<dsaparam(1)|dsaparam(1)>
=head1 HISTORY
The ecparam command was first introduced in OpenSSL 0.9.8.
=head1 AUTHOR
Nils Larsch for the OpenSSL project (http://www.openssl.org)
=cut
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