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diff --git a/secure/lib/libcrypto/man/man3/EC_POINT_new.3 b/secure/lib/libcrypto/man/man3/EC_POINT_new.3 new file mode 100644 index 000000000000..fd5139878a17 --- /dev/null +++ b/secure/lib/libcrypto/man/man3/EC_POINT_new.3 @@ -0,0 +1,339 @@ +.\" Automatically generated by Pod::Man 4.11 (Pod::Simple 3.39) +.\" +.\" 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 +.. +.\" Set up some character translations and predefined strings. \*(-- will +.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left +.\" double quote, and \*(R" will give a right double quote. \*(C+ will +.\" give a nicer C++. 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No user-serviceable parts. +. \" fudge factors for nroff and troff +.if n \{\ +. ds #H 0 +. ds #V .8m +. ds #F .3m +. ds #[ \f1 +. ds #] \fP +.\} +.if t \{\ +. ds #H ((1u-(\\\\n(.fu%2u))*.13m) +. ds #V .6m +. ds #F 0 +. ds #[ \& +. ds #] \& +.\} +. \" simple accents for nroff and troff +.if n \{\ +. ds ' \& +. ds ` \& +. ds ^ \& +. ds , \& +. ds ~ ~ +. ds / +.\} +.if t \{\ +. ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u" +. ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u' +. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u' +. ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u' +. ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u' +. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u' +.\} +. \" troff and (daisy-wheel) nroff accents +.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V' +.ds 8 \h'\*(#H'\(*b\h'-\*(#H' +.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#] +.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H' +.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u' +.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#] +.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#] +.ds ae a\h'-(\w'a'u*4/10)'e +.ds Ae A\h'-(\w'A'u*4/10)'E +. \" corrections for vroff +.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u' +.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u' +. \" for low resolution devices (crt and lpr) +.if \n(.H>23 .if \n(.V>19 \ +\{\ +. ds : e +. ds 8 ss +. ds o a +. ds d- d\h'-1'\(ga +. ds D- D\h'-1'\(hy +. ds th \o'bp' +. ds Th \o'LP' +. ds ae ae +. ds Ae AE +.\} +.rm #[ #] #H #V #F C +.\" ======================================================================== +.\" +.IX Title "EC_POINT_NEW 3" +.TH EC_POINT_NEW 3 "2019-09-10" "1.1.1d" "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_POINT_set_Jprojective_coordinates_GFp, EC_POINT_point2buf, EC_POINT_new, EC_POINT_free, EC_POINT_clear_free, EC_POINT_copy, EC_POINT_dup, EC_POINT_method_of, EC_POINT_set_to_infinity, EC_POINT_get_Jprojective_coordinates_GFp, EC_POINT_set_affine_coordinates, EC_POINT_get_affine_coordinates, EC_POINT_set_compressed_coordinates, EC_POINT_set_affine_coordinates_GFp, EC_POINT_get_affine_coordinates_GFp, EC_POINT_set_compressed_coordinates_GFp, EC_POINT_set_affine_coordinates_GF2m, EC_POINT_get_affine_coordinates_GF2m, EC_POINT_set_compressed_coordinates_GF2m, EC_POINT_point2oct, EC_POINT_oct2point, EC_POINT_point2bn, EC_POINT_bn2point, EC_POINT_point2hex, EC_POINT_hex2point \&\- Functions for creating, destroying and manipulating EC_POINT objects +.SH "SYNOPSIS" +.IX Header "SYNOPSIS" +.Vb 1 +\& #include <openssl/ec.h> +\& +\& EC_POINT *EC_POINT_new(const EC_GROUP *group); +\& void EC_POINT_free(EC_POINT *point); +\& void EC_POINT_clear_free(EC_POINT *point); +\& int EC_POINT_copy(EC_POINT *dst, const EC_POINT *src); +\& EC_POINT *EC_POINT_dup(const EC_POINT *src, const EC_GROUP *group); +\& const EC_METHOD *EC_POINT_method_of(const EC_POINT *point); +\& int EC_POINT_set_to_infinity(const EC_GROUP *group, EC_POINT *point); +\& int EC_POINT_set_Jprojective_coordinates_GFp(const EC_GROUP *group, +\& EC_POINT *p, +\& const BIGNUM *x, const BIGNUM *y, +\& const BIGNUM *z, BN_CTX *ctx); +\& int EC_POINT_get_Jprojective_coordinates_GFp(const EC_GROUP *group, +\& const EC_POINT *p, +\& BIGNUM *x, BIGNUM *y, BIGNUM *z, +\& BN_CTX *ctx); +\& int EC_POINT_set_affine_coordinates(const EC_GROUP *group, EC_POINT *p, +\& const BIGNUM *x, const BIGNUM *y, +\& BN_CTX *ctx); +\& int EC_POINT_get_affine_coordinates(const EC_GROUP *group, const EC_POINT *p, +\& BIGNUM *x, BIGNUM *y, BN_CTX *ctx); +\& int EC_POINT_set_compressed_coordinates(const EC_GROUP *group, EC_POINT *p, +\& const BIGNUM *x, int y_bit, +\& BN_CTX *ctx); +\& int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *group, EC_POINT *p, +\& const BIGNUM *x, const BIGNUM *y, +\& BN_CTX *ctx); +\& int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *group, +\& const EC_POINT *p, +\& BIGNUM *x, BIGNUM *y, BN_CTX *ctx); +\& int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *group, +\& EC_POINT *p, +\& const BIGNUM *x, int y_bit, +\& BN_CTX *ctx); +\& int EC_POINT_set_affine_coordinates_GF2m(const EC_GROUP *group, EC_POINT *p, +\& const BIGNUM *x, const BIGNUM *y, +\& BN_CTX *ctx); +\& int EC_POINT_get_affine_coordinates_GF2m(const EC_GROUP *group, +\& const EC_POINT *p, +\& BIGNUM *x, BIGNUM *y, BN_CTX *ctx); +\& int EC_POINT_set_compressed_coordinates_GF2m(const EC_GROUP *group, +\& EC_POINT *p, +\& const BIGNUM *x, int y_bit, +\& BN_CTX *ctx); +\& size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *p, +\& point_conversion_form_t form, +\& unsigned char *buf, size_t len, BN_CTX *ctx); +\& size_t EC_POINT_point2buf(const EC_GROUP *group, const EC_POINT *point, +\& point_conversion_form_t form, +\& unsigned char **pbuf, BN_CTX *ctx); +\& int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *p, +\& const unsigned char *buf, size_t len, BN_CTX *ctx); +\& BIGNUM *EC_POINT_point2bn(const EC_GROUP *group, const EC_POINT *p, +\& point_conversion_form_t form, BIGNUM *bn, +\& BN_CTX *ctx); +\& EC_POINT *EC_POINT_bn2point(const EC_GROUP *group, const BIGNUM *bn, +\& EC_POINT *p, BN_CTX *ctx); +\& char *EC_POINT_point2hex(const EC_GROUP *group, const EC_POINT *p, +\& point_conversion_form_t form, BN_CTX *ctx); +\& EC_POINT *EC_POINT_hex2point(const EC_GROUP *group, const char *hex, +\& EC_POINT *p, BN_CTX *ctx); +.Ve +.SH "DESCRIPTION" +.IX Header "DESCRIPTION" +An \fB\s-1EC_POINT\s0\fR structure represents a point on a curve. A new point is +constructed by calling the function \fBEC_POINT_new()\fR and providing the +\&\fBgroup\fR object that the point relates to. +.PP +\&\fBEC_POINT_free()\fR frees the memory associated with the \fB\s-1EC_POINT\s0\fR. +if \fBpoint\fR is \s-1NULL\s0 nothing is done. +.PP +\&\fBEC_POINT_clear_free()\fR destroys any sensitive data held within the \s-1EC_POINT\s0 and +then frees its memory. If \fBpoint\fR is \s-1NULL\s0 nothing is done. +.PP +\&\fBEC_POINT_copy()\fR copies the point \fBsrc\fR into \fBdst\fR. Both \fBsrc\fR and \fBdst\fR +must use the same \fB\s-1EC_METHOD\s0\fR. +.PP +\&\fBEC_POINT_dup()\fR creates a new \fB\s-1EC_POINT\s0\fR object and copies the content from +\&\fBsrc\fR to the newly created \fB\s-1EC_POINT\s0\fR object. +.PP +\&\fBEC_POINT_method_of()\fR obtains the \fB\s-1EC_METHOD\s0\fR associated with \fBpoint\fR. +.PP +A valid point on a curve is the special point at infinity. A point is set to +be at infinity by calling \fBEC_POINT_set_to_infinity()\fR. +.PP +The affine co-ordinates for a point describe a point in terms of its x and y +position. The function \fBEC_POINT_set_affine_coordinates()\fR sets the \fBx\fR and \fBy\fR +co-ordinates for the point \fBp\fR defined over the curve given in \fBgroup\fR. The +function \fBEC_POINT_get_affine_coordinates()\fR sets \fBx\fR and \fBy\fR, either of which +may be \s-1NULL,\s0 to the corresponding coordinates of \fBp\fR. +.PP +The functions \fBEC_POINT_set_affine_coordinates_GFp()\fR and +\&\fBEC_POINT_set_affine_coordinates_GF2m()\fR are synonyms for +\&\fBEC_POINT_set_affine_coordinates()\fR. They are defined for backwards compatibility +only and should not be used. +.PP +The functions \fBEC_POINT_get_affine_coordinates_GFp()\fR and +\&\fBEC_POINT_get_affine_coordinates_GF2m()\fR are synonyms for +\&\fBEC_POINT_get_affine_coordinates()\fR. They are defined for backwards compatibility +only and should not be used. +.PP +As well as the affine co-ordinates, a point can alternatively be described in +terms of its Jacobian projective co-ordinates (for Fp curves only). Jacobian +projective co-ordinates are expressed as three values x, y and z. Working in +this co-ordinate system provides more efficient point multiplication +operations. A mapping exists between Jacobian projective co-ordinates and +affine co-ordinates. A Jacobian projective co-ordinate (x, y, z) can be written +as an affine co-ordinate as (x/(z^2), y/(z^3)). Conversion to Jacobian +projective from affine co-ordinates is simple. The co-ordinate (x, y) is mapped +to (x, y, 1). To set or get the projective co-ordinates use +\&\fBEC_POINT_set_Jprojective_coordinates_GFp()\fR and +\&\fBEC_POINT_get_Jprojective_coordinates_GFp()\fR respectively. +.PP +Points can also be described in terms of their compressed co-ordinates. For a +point (x, y), for any given value for x such that the point is on the curve +there will only ever be two possible values for y. Therefore a point can be set +using the \fBEC_POINT_set_compressed_coordinates()\fR function where \fBx\fR is the x +co-ordinate and \fBy_bit\fR is a value 0 or 1 to identify which of the two +possible values for y should be used. +.PP +The functions \fBEC_POINT_set_compressed_coordinates_GFp()\fR and +\&\fBEC_POINT_set_compressed_coordinates_GF2m()\fR are synonyms for +\&\fBEC_POINT_set_compressed_coordinates()\fR. They are defined for backwards +compatibility only and should not be used. +.PP +In addition \fB\s-1EC_POINT\s0\fR can be converted to and from various external +representations. The octet form is the binary encoding of the \fBECPoint\fR +structure (as defined in \s-1RFC5480\s0 and used in certificates and \s-1TLS\s0 records): +only the content octets are present, the \fB\s-1OCTET STRING\s0\fR tag and length are +not included. \fB\s-1BIGNUM\s0\fR form is the octet form interpreted as a big endian +integer converted to a \fB\s-1BIGNUM\s0\fR structure. Hexadecimal form is the octet +form converted to a \s-1NULL\s0 terminated character string where each character +is one of the printable values 0\-9 or A\-F (or a\-f). +.PP +The functions \fBEC_POINT_point2oct()\fR, \fBEC_POINT_oct2point()\fR, \fBEC_POINT_point2bn()\fR, +\&\fBEC_POINT_bn2point()\fR, \fBEC_POINT_point2hex()\fR and \fBEC_POINT_hex2point()\fR convert from +and to EC_POINTs for the formats: octet, \s-1BIGNUM\s0 and hexadecimal respectively. +.PP +The function \fBEC_POINT_point2oct()\fR must be supplied with a buffer long enough to +store the octet form. The return value provides the number of octets stored. +Calling the function with a \s-1NULL\s0 buffer will not perform the conversion but +will still return the required buffer length. +.PP +The function \fBEC_POINT_point2buf()\fR allocates a buffer of suitable length and +writes an \s-1EC_POINT\s0 to it in octet format. The allocated buffer is written to +\&\fB*pbuf\fR and its length is returned. The caller must free up the allocated +buffer with a call to \fBOPENSSL_free()\fR. Since the allocated buffer value is +written to \fB*pbuf\fR the \fBpbuf\fR parameter \fB\s-1MUST NOT\s0\fR be \fB\s-1NULL\s0\fR. +.PP +The function \fBEC_POINT_point2hex()\fR will allocate sufficient memory to store the +hexadecimal string. It is the caller's responsibility to free this memory with +a subsequent call to \fBOPENSSL_free()\fR. +.SH "RETURN VALUES" +.IX Header "RETURN VALUES" +\&\fBEC_POINT_new()\fR and \fBEC_POINT_dup()\fR return the newly allocated \s-1EC_POINT\s0 or \s-1NULL\s0 +on error. +.PP +The following functions return 1 on success or 0 on error: \fBEC_POINT_copy()\fR, +\&\fBEC_POINT_set_to_infinity()\fR, \fBEC_POINT_set_Jprojective_coordinates_GFp()\fR, +\&\fBEC_POINT_get_Jprojective_coordinates_GFp()\fR, +\&\fBEC_POINT_set_affine_coordinates_GFp()\fR, \fBEC_POINT_get_affine_coordinates_GFp()\fR, +\&\fBEC_POINT_set_compressed_coordinates_GFp()\fR, +\&\fBEC_POINT_set_affine_coordinates_GF2m()\fR, \fBEC_POINT_get_affine_coordinates_GF2m()\fR, +\&\fBEC_POINT_set_compressed_coordinates_GF2m()\fR and \fBEC_POINT_oct2point()\fR. +.PP +EC_POINT_method_of returns the \s-1EC_METHOD\s0 associated with the supplied \s-1EC_POINT.\s0 +.PP +\&\fBEC_POINT_point2oct()\fR and \fBEC_POINT_point2buf()\fR return the length of the required +buffer or 0 on error. +.PP +\&\fBEC_POINT_point2bn()\fR returns the pointer to the \s-1BIGNUM\s0 supplied, or \s-1NULL\s0 on +error. +.PP +\&\fBEC_POINT_bn2point()\fR returns the pointer to the \s-1EC_POINT\s0 supplied, or \s-1NULL\s0 on +error. +.PP +\&\fBEC_POINT_point2hex()\fR returns a pointer to the hex string, or \s-1NULL\s0 on error. +.PP +\&\fBEC_POINT_hex2point()\fR returns the pointer to the \s-1EC_POINT\s0 supplied, or \s-1NULL\s0 on +error. +.SH "SEE ALSO" +.IX Header "SEE ALSO" +\&\fBcrypto\fR\|(7), \fBEC_GROUP_new\fR\|(3), \fBEC_GROUP_copy\fR\|(3), +\&\fBEC_POINT_add\fR\|(3), \fBEC_KEY_new\fR\|(3), +\&\fBEC_GFp_simple_method\fR\|(3), \fBd2i_ECPKParameters\fR\|(3) +.SH "COPYRIGHT" +.IX Header "COPYRIGHT" +Copyright 2013\-2018 The OpenSSL Project Authors. All Rights Reserved. +.PP +Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use +this file except in compliance with the License. You can obtain a copy +in the file \s-1LICENSE\s0 in the source distribution or at +<https://www.openssl.org/source/license.html>. |