=head1 SYNOPSIS
B<openssl> B<ec>
+[B<-help>]
[B<-inform PEM|DER>]
[B<-outform PEM|DER>]
[B<-in filename>]
[B<-pubout>]
[B<-conv_form arg>]
[B<-param_enc arg>]
+[B<-no_public>]
+[B<-check>]
[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
+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
+(http://www.secg.org/). To convert an OpenSSL EC private key into the
PKCS#8 private key format use the B<pkcs8> command.
=head1 COMMAND OPTIONS
=over 4
+=item B<-help>
+
+Print out a usage message.
+
=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.
+uses the SubjectPublicKeyInfo structure 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
+This specifies the output format, the options have the same meaning as the
B<-inform> option.
=item B<-in filename>
=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)>.
+see the B<PASS PHRASE ARGUMENTS> section in L<openssl(1)>.
=item B<-out 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)>.
+see the B<PASS PHRASE ARGUMENTS> section in L<openssl(1)>.
=item B<-des|-des3|-idea>
-These options encrypt the private key with the DES, triple DES, IDEA or
+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
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,
+B<Note> the B<implicitlyCA> alternative, as specified in RFC 3279,
is currently not implemented in OpenSSL.
+=item B<-no_public>
+
+This option omits the public key components from the private key output.
+
+=item B<-check>
+
+this option checks the consistency of an EC private or public key.
+
=item B<-engine id>
specifying an engine (by its unique B<id> string) will cause B<ec>
openssl ec -in key.pem -des3 -out keyout.pem
-To convert a private key from PEM to DER format:
+To convert a private key from PEM to DER format:
openssl ec -in key.pem -outform DER -out keyout.der
=head1 SEE ALSO
-L<ecparam(1)|ecparam(1)>, L<dsa(1)|dsa(1)>, L<rsa(1)|rsa(1)>
-
-=head1 HISTORY
+L<ecparam(1)>, L<dsa(1)>, L<rsa(1)>
-The ec command was first introduced in OpenSSL 0.9.8.
+=head1 COPYRIGHT
-=head1 AUTHOR
+Copyright 2003-2016 The OpenSSL Project Authors. All Rights Reserved.
-Nils Larsch for the OpenSSL 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
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