mirror of
https://github.com/openssl/openssl.git
synced 2024-12-09 05:51:54 +08:00
65 lines
1.6 KiB
Plaintext
65 lines
1.6 KiB
Plaintext
|
=pod
|
||
|
|
|
||
|
|
=head1 NAME
|
||
|
|
|
||
|
|
EVP_PKEY-EC - EVP_PKEY EC keytype and algorithm support
|
||
|
|
|
||
|
|
=head1 DESCRIPTION
|
||
|
|
|
||
|
|
The B<EC> keytype is implemented in OpenSSL's default provider.
|
||
|
|
|
||
|
|
=head2 Common EC parameters
|
||
|
|
|
||
|
|
The following Import/Export types are available for the built-in EC algorithm:
|
||
|
|
|
||
|
|
=over 4
|
||
|
|
|
||
|
|
=item "curve-name" (B<OSSL_PKEY_PARAM_EC_NAME>) <utf8 string>
|
||
|
|
|
||
|
|
The EC curve name.
|
||
|
|
|
||
|
|
=item "use-cofactor-flag" (B<OSSL_PKEY_PARAM_USE_COFACTOR_ECDH>) <integer>
|
||
|
|
|
||
|
|
Enable Cofactor DH (ECC CDH) if this value is 1, otherwise it uses normal EC DH
|
||
|
|
if the value is zero. The cofactor variant multiplies the shared secret by the
|
||
|
|
EC curve's cofactor (note for some curves the cofactor is 1).
|
||
|
|
|
||
|
|
=for comment The following link should become L<EVP_KEYEXCH-ECDH(7)>
|
||
|
|
|
||
|
|
See also L<provider-keyexch(7)> for the related
|
||
|
|
B<OSSL_EXCHANGE_PARAM_EC_ECDH_COFACTOR_MODE> parameter that can be set on a
|
||
|
|
per-operation basis.
|
||
|
|
|
||
|
|
=item "pub" (B<OSSL_PKEY_PARAM_PUB_KEY>) <octet string>
|
||
|
|
|
||
|
|
The public key value in EC point format.
|
||
|
|
|
||
|
|
=item "priv" (B<OSSL_PKEY_PARAM_PRIV_KEY>) <unsigned integer>
|
||
|
|
|
||
|
|
The private key value.
|
||
|
|
|
||
|
|
=back
|
||
|
|
|
||
|
|
=head1 EXAMPLES
|
||
|
|
|
||
|
|
An B<EVP_PKEY> context can be obtained by calling:
|
||
|
|
|
||
|
|
EVP_PKEY_CTX *pctx =
|
||
|
|
EVP_PKEY_CTX_new_from_name(NULL, "EC", NULL);
|
||
|
|
|
||
|
|
=head1 SEE ALSO
|
||
|
|
|
||
|
|
L<EVP_KEYMGMT(3)>, L<EVP_PKEY(3)>, L<provider-keymgmt(7)>,
|
||
|
|
L<EVP_SIGNATURE-ECDSA(7)>, L<EVP_KEYEXCH-ECDH(7)>
|
||
|
|
|
||
|
|
=head1 COPYRIGHT
|
||
|
|
|
||
|
|
Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
|
||
|
|
|
||
|
|
Licensed under the Apache License 2.0 (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
|