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doc/man7/EVP_PKEY-EC.pod

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+=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