OpenGrok

$NetBSD: d2i_ECPrivateKey.3,v 1.1.1.1 2018/02/03 22:43:39 christos Exp $

Automatically generated by Pod::Man 4.07 (Pod::Simple 3.32)

Standard preamble:
========================================================================
..

..

.. 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++. Capital omega is used to do unbreakable dashes and
therefore won't be available. \*(C` and \*(C' expand to `' in nroff,
nothing in troff, for use with C<>.
.tr \(*W- . ds -- \(*W- . ds PI pi . if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch . if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch . ds L" "" . ds R" "" . ds C` "" . ds C' "" 'br\} . ds -- \|\(em\| . ds PI \(*p . ds L" `` . ds R" '' . ds C` . ds C' 'br\}
Escape single quotes in literal strings from groff's Unicode transform.

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 . tm Index:\\$1\t\\n%\t"\\$2" .. . if !\nF==2 \{\ . nr % 0 . nr F 2 . \} .\}
Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
Fear. Run. Save yourself. No user-serviceable parts.
. \" fudge factors for nroff and troff . ds #H 0 . ds #V .8m . ds #F .3m . ds #[ \f1 . ds #] .\} . ds #H ((1u-(\\\\n(.fu%2u))*.13m) . ds #V .6m . ds #F 0 . ds #[ \& . ds #] \& .\} . \" simple accents for nroff and troff . ds ' \& . ds ` \& . ds ^ \& . ds , \& . ds ~ ~ . ds / .\} . 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 . \" corrections for vroff . \" for low resolution devices (crt and lpr) \{\ . 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 .\} ========================================================================

Title "d2i_ECPrivateKey 3" For nroff, turn off justification. Always turn off hyphenation; it makes
way too many mistakes in technical documents.
.nh i2d_ECPrivateKey, d2i_ECPrivate_key - Encode and decode functions for saving and reading EC_KEY structures libcrypto, -lcrypto Header "SYNOPSIS" .Vb 1 #include <openssl/ec.h> \& EC_KEY *d2i_ECPrivateKey(EC_KEY **key, const unsigned char **in, long len); int i2d_ECPrivateKey(EC_KEY *key, unsigned char **out); \& unsigned int EC_KEY_get_enc_flags(const EC_KEY *key); void EC_KEY_set_enc_flags(EC_KEY *eckey, unsigned int flags); .Ve Header "DESCRIPTION" The ECPrivateKey encode and decode routines encode and parse an \fB\s-1EC_KEY\s0 structure into a binary format (\s-1ASN.1 DER\s0) and back again.

These functions are similar to the d2i_X509() functions, and you should refer to that page for a detailed description (see d2i_X509\|(3)).

The format of the external representation of the public key written by i2d_ECPrivateKey (such as whether it is stored in a compressed form or not) is described by the point_conversion_form. See EC_GROUP_copy\|(3) for a description of point_conversion_form.

When reading a private key encoded without an associated public key (e.g. if \s-1EC_PKEY_NO_PUBKEY\s0 has been used - see below), then d2i_ECPrivateKey generates the missing public key automatically. Private keys encoded without parameters (e.g. if \s-1EC_PKEY_NO_PARAMETERS\s0 has been used - see below) cannot be loaded using d2i_ECPrivateKey.

The functions EC_KEY_get_enc_flags and EC_KEY_set_enc_flags get and set the value of the encoding flags for the key. There are two encoding flags currently defined - \s-1EC_PKEY_NO_PARAMETERS\s0 and \s-1EC_PKEY_NO_PUBKEY. \s0 These flags define the behaviour of how the key is converted into \s-1ASN1\s0 in a call to i2d_ECPrivateKey. If \s-1EC_PKEY_NO_PARAMETERS\s0 is set then the public parameters for the curve are not encoded along with the private key. If \s-1EC_PKEY_NO_PUBKEY\s0 is set then the public key is not encoded along with the private key.

Header "RETURN VALUES" \fId2i_ECPrivateKey() returns a valid \s-1EC_KEY\s0 structure or \s-1NULL\s0 if an error occurs. The error code that can be obtained by \fIERR_get_error\|(3).

\fIi2d_ECPrivateKey() returns the number of bytes successfully encoded or a negative value if an error occurs. The error code can be obtained by \fIERR_get_error\|(3).

EC_KEY_get_enc_flags returns the value of the current encoding flags for the \s-1EC_KEY.\s0

Header "SEE ALSO" \fIcrypto\|(3), ec\|(3), EC_GROUP_new\|(3), \fIEC_GROUP_copy\|(3), EC_POINT_new\|(3), \fIEC_POINT_add\|(3), \fIEC_GFp_simple_method\|(3), \fId2i_ECPKParameters\|(3), \fId2i_ECPrivateKey\|(3)

Indexes created Wed Apr 22 00:22:44 UTC 2026