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#	README.md
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Zhi Guan
2017-02-14 16:12:29 +08:00
parent d2254170b8
commit 43fed1108d
3503 changed files with 320546 additions and 408546 deletions
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doc/apps/ecparam.pod
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@@ -6,7 +6,8 @@ ecparam - EC parameter manipulation and generation
=head1 SYNOPSIS
B<gmssl ecparam>
B<openssl ecparam>
[B<-help>]
[B<-inform DER|PEM>]
[B<-outform DER|PEM>]
[B<-in filename>]
@@ -32,16 +33,20 @@ This command is used to manipulate or generate EC parameter files.
=over 4
=item B<-help>
Print out a usage message.
=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
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
This specifies the output format, the options have the same meaning as the
B<-inform> option.
=item B<-in filename>
@@ -66,7 +71,7 @@ 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.
be loaded by calling the get_ec_group_XXX() function.
=item B<-check>
@@ -96,11 +101,11 @@ the preprocessor macro B<OPENSSL_EC_BIN_PT_COMP> at compile time.
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
specified by an 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 GmSSL.
B<Note> the B<implicitlyCA> alternative, as specified in RFC 3279,
is currently not implemented in OpenSSL.
=item B<-no_seed>
@@ -109,13 +114,13 @@ is included in the ECParameters structure (see RFC 3279).
=item B<-genkey>
This option will generate a EC private key using the specified parameters.
This option will generate an 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.
generator, or an EGD socket (see L<RAND_egd(3)>).
Multiple files can be specified separated by an OS-dependent character.
The separator is B<;> for MS-Windows, B<,> for OpenVMS, and B<:> for
all others.
@@ -135,45 +140,46 @@ PEM format EC parameters use the header and footer lines:
-----BEGIN EC PARAMETERS-----
-----END EC PARAMETERS-----
GmSSL is currently not able to generate new groups and therefore
B<ecparam> can only create EC parameters from known (named) curves.
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':
gmssl ecparam -out ec_param.pem -name prime192v1
openssl ecparam -out ec_param.pem -name prime192v1
To create EC parameters with explicit parameters:
gmssl ecparam -out ec_param.pem -name prime192v1 -param_enc explicit
openssl ecparam -out ec_param.pem -name prime192v1 -param_enc explicit
To validate given EC parameters:
gmssl ecparam -in ec_param.pem -check
openssl ecparam -in ec_param.pem -check
To create EC parameters and a private key:
gmssl ecparam -out ec_key.pem -name prime192v1 -genkey
openssl ecparam -out ec_key.pem -name prime192v1 -genkey
To change the point encoding to 'compressed':
gmssl ecparam -in ec_in.pem -out ec_out.pem -conv_form compressed
openssl ecparam -in ec_in.pem -out ec_out.pem -conv_form compressed
To print out the EC parameters to standard output:
gmssl ecparam -in ec_param.pem -noout -text
openssl ecparam -in ec_param.pem -noout -text
=head1 SEE ALSO
L<ec(1)|ec(1)>, L<dsaparam(1)|dsaparam(1)>
L<ec(1)>, L<dsaparam(1)>
=head1 HISTORY
=head1 COPYRIGHT
The ecparam command was first introduced in GmSSL 0.9.8.
Copyright 2003-2016 The OpenSSL Project Authors. All Rights Reserved.
=head1 AUTHOR
Nils Larsch for the GmSSL project (http://www.openssl.org)
Licensed under the OpenSSL license (the "License"). You may not use
this file except in compliance with the License. You can obtain a copy
in the file LICENSE in the source distribution or at
L<https://www.openssl.org/source/license.html>.
=cut