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Diffstat (limited to 'secure/lib/libcrypto/man/man3/EC_GFp_simple_method.3')
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diff --git a/secure/lib/libcrypto/man/man3/EC_GFp_simple_method.3 b/secure/lib/libcrypto/man/man3/EC_GFp_simple_method.3 new file mode 100644 index 000000000000..382802203951 --- /dev/null +++ b/secure/lib/libcrypto/man/man3/EC_GFp_simple_method.3 @@ -0,0 +1,137 @@ +.\" -*- mode: troff; coding: utf-8 -*- +.\" Automatically generated by Pod::Man 5.0102 (Pod::Simple 3.45) +.\" +.\" Standard preamble: +.\" ======================================================================== +.de Sp \" Vertical space (when we can't use .PP) +.if t .sp .5v +.if n .sp +.. +.de Vb \" Begin verbatim text +.ft CW +.nf +.ne \\$1 +.. +.de Ve \" End verbatim text +.ft R +.fi +.. +.\" \*(C` and \*(C' are quotes in nroff, nothing in troff, for use with C<>. +.ie n \{\ +. ds C` "" +. ds C' "" +'br\} +.el\{\ +. ds C` +. ds C' +'br\} +.\" +.\" Escape single quotes in literal strings from groff's Unicode transform. +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" +.\" If the F register is >0, we'll generate index entries on stderr for +.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index +.\" entries marked with X<> in POD. Of course, you'll have to process the +.\" output yourself in some meaningful fashion. +.\" +.\" Avoid warning from groff about undefined register 'F'. +.de IX +.. +.nr rF 0 +.if \n(.g .if rF .nr rF 1 +.if (\n(rF:(\n(.g==0)) \{\ +. if \nF \{\ +. de IX +. tm Index:\\$1\t\\n%\t"\\$2" +.. +. if !\nF==2 \{\ +. nr % 0 +. nr F 2 +. \} +. \} +.\} +.rr rF +.\" ======================================================================== +.\" +.IX Title "EC_GFP_SIMPLE_METHOD 3ossl" +.TH EC_GFP_SIMPLE_METHOD 3ossl 2025-09-16 3.5.3 OpenSSL +.\" For nroff, turn off justification. Always turn off hyphenation; it makes +.\" way too many mistakes in technical documents. +.if n .ad l +.nh +.SH NAME +EC_GFp_simple_method, EC_GFp_mont_method, EC_GFp_nist_method, EC_GFp_nistp224_method, EC_GFp_nistp256_method, EC_GFp_nistp521_method, EC_GF2m_simple_method, EC_METHOD_get_field_type \- Functions for obtaining EC_METHOD objects +.SH SYNOPSIS +.IX Header "SYNOPSIS" +.Vb 1 +\& #include <openssl/ec.h> +.Ve +.PP +The following functions have been deprecated since OpenSSL 3.0, and can be +hidden entirely by defining \fBOPENSSL_API_COMPAT\fR with a suitable version value, +see \fBopenssl_user_macros\fR\|(7): +.PP +.Vb 6 +\& const EC_METHOD *EC_GFp_simple_method(void); +\& const EC_METHOD *EC_GFp_mont_method(void); +\& const EC_METHOD *EC_GFp_nist_method(void); +\& const EC_METHOD *EC_GFp_nistp224_method(void); +\& const EC_METHOD *EC_GFp_nistp256_method(void); +\& const EC_METHOD *EC_GFp_nistp521_method(void); +\& +\& const EC_METHOD *EC_GF2m_simple_method(void); +\& +\& int EC_METHOD_get_field_type(const EC_METHOD *meth); +.Ve +.SH DESCRIPTION +.IX Header "DESCRIPTION" +All const EC_METHOD *EC_GF* functions were deprecated in OpenSSL 3.0, since +EC_METHOD is no longer a public concept. +.PP +The Elliptic Curve library provides a number of different implementations through a single common interface. +When constructing a curve using EC_GROUP_new (see \fBEC_GROUP_new\fR\|(3)) an +implementation method must be provided. The functions described here all return a const pointer to an +\&\fBEC_METHOD\fR structure that can be passed to EC_GROUP_NEW. It is important that the correct implementation +type for the form of curve selected is used. +.PP +For F2^m curves there is only one implementation choice, i.e. EC_GF2_simple_method. +.PP +For Fp curves the lowest common denominator implementation is the EC_GFp_simple_method implementation. All +other implementations are based on this one. EC_GFp_mont_method builds on EC_GFp_simple_method but adds the +use of montgomery multiplication (see \fBBN_mod_mul_montgomery\fR\|(3)). EC_GFp_nist_method +offers an implementation optimised for use with NIST recommended curves (NIST curves are available through +EC_GROUP_new_by_curve_name as described in \fBEC_GROUP_new\fR\|(3)). +.PP +The functions EC_GFp_nistp224_method, EC_GFp_nistp256_method and EC_GFp_nistp521_method offer 64 bit +optimised implementations for the NIST P224, P256 and P521 curves respectively. Note, however, that these +implementations are not available on all platforms. +.PP +\&\fBEC_METHOD_get_field_type()\fR was deprecated in OpenSSL 3.0. +Applications should use \fBEC_GROUP_get_field_type()\fR as a replacement (see \fBEC_GROUP_copy\fR\|(3)). +.SH "RETURN VALUES" +.IX Header "RETURN VALUES" +All EC_GFp* functions and EC_GF2m_simple_method always return a const pointer to an EC_METHOD structure. +.PP +EC_METHOD_get_field_type returns an integer that identifies the type of field the EC_METHOD structure supports. +.SH "SEE ALSO" +.IX Header "SEE ALSO" +\&\fBcrypto\fR\|(7), \fBEC_GROUP_new\fR\|(3), \fBEC_GROUP_copy\fR\|(3), +\&\fBEC_POINT_new\fR\|(3), \fBEC_POINT_add\fR\|(3), \fBEC_KEY_new\fR\|(3), +\&\fBd2i_ECPKParameters\fR\|(3), +\&\fBBN_mod_mul_montgomery\fR\|(3) +.SH HISTORY +.IX Header "HISTORY" +\&\fBEC_GFp_simple_method()\fR, EC_GFp_mont_method(void), +\&\fBEC_GFp_nist_method()\fR, \fBEC_GFp_nistp224_method()\fR, +\&\fBEC_GFp_nistp256_method()\fR, \fBEC_GFp_nistp521_method()\fR, +\&\fBEC_GF2m_simple_method()\fR, and \fBEC_METHOD_get_field_type()\fR +were deprecated in OpenSSL 3.0. +.SH COPYRIGHT +.IX Header "COPYRIGHT" +Copyright 2013\-2020 The OpenSSL Project Authors. All Rights Reserved. +.PP +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 +<https://www.openssl.org/source/license.html>. |