Mini Shell
.\" Automatically generated by Pod::Man 4.14 (Pod::Simple 3.42)
.\"
.\" 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++. 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 C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
.ie n \{\
. 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\}
.el\{\
. 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.
.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
.\"
.\" 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
.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 "OSSL_PARAM_BLD 3ossl"
.TH OSSL_PARAM_BLD 3ossl "2024-09-03" "3.1.7+quic" "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"
OSSL_PARAM_BLD, OSSL_PARAM_BLD_new, OSSL_PARAM_BLD_to_param,
OSSL_PARAM_BLD_free, OSSL_PARAM_BLD_push_int,
OSSL_PARAM_BLD_push_uint, OSSL_PARAM_BLD_push_long,
OSSL_PARAM_BLD_push_ulong, OSSL_PARAM_BLD_push_int32,
OSSL_PARAM_BLD_push_uint32, OSSL_PARAM_BLD_push_int64,
OSSL_PARAM_BLD_push_uint64, OSSL_PARAM_BLD_push_size_t,
OSSL_PARAM_BLD_push_time_t, OSSL_PARAM_BLD_push_double,
OSSL_PARAM_BLD_push_BN, OSSL_PARAM_BLD_push_BN_pad,
OSSL_PARAM_BLD_push_utf8_string, OSSL_PARAM_BLD_push_utf8_ptr,
OSSL_PARAM_BLD_push_octet_string, OSSL_PARAM_BLD_push_octet_ptr
\&\- functions to assist in the creation of OSSL_PARAM arrays
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/param_build.h>
\&
\& typedef struct OSSL_PARAM_BLD;
\&
\& OSSL_PARAM_BLD *OSSL_PARAM_BLD_new(void);
\& OSSL_PARAM *OSSL_PARAM_BLD_to_param(OSSL_PARAM_BLD *bld);
\& void OSSL_PARAM_BLD_free(OSSL_PARAM_BLD *bld);
\&
\& int OSSL_PARAM_BLD_push_TYPE(OSSL_PARAM_BLD *bld, const char *key, TYPE val);
\&
\& int OSSL_PARAM_BLD_push_BN(OSSL_PARAM_BLD *bld, const char *key,
\& const BIGNUM *bn);
\& int OSSL_PARAM_BLD_push_BN_pad(OSSL_PARAM_BLD *bld, const char *key,
\& const BIGNUM *bn, size_t sz);
\&
\& int OSSL_PARAM_BLD_push_utf8_string(OSSL_PARAM_BLD *bld, const char *key,
\& const char *buf, size_t bsize);
\& int OSSL_PARAM_BLD_push_utf8_ptr(OSSL_PARAM_BLD *bld, const char *key,
\& char *buf, size_t bsize);
\& int OSSL_PARAM_BLD_push_octet_string(OSSL_PARAM_BLD *bld, const char *key,
\& const void *buf, size_t bsize);
\& int OSSL_PARAM_BLD_push_octet_ptr(OSSL_PARAM_BLD *bld, const char *key,
\& void *buf, size_t bsize);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
A collection of utility functions that simplify the creation of \s-1OSSL_PARAM\s0
arrays. The \fB\f(BI\s-1TYPE\s0\fB\fR names are as per \fBOSSL_PARAM_int\fR\|(3).
.PP
\&\fBOSSL_PARAM_BLD_new()\fR allocates and initialises a new \s-1OSSL_PARAM_BLD\s0 structure
so that values can be added.
Any existing values are cleared.
.PP
\&\fBOSSL_PARAM_BLD_free()\fR deallocates the memory allocates by \fBOSSL_PARAM_BLD_new()\fR.
If the argument is \s-1NULL,\s0 nothing is done.
.PP
\&\fBOSSL_PARAM_BLD_to_param()\fR converts a built up \s-1OSSL_PARAM_BLD\s0 structure
\&\fIbld\fR into an allocated \s-1OSSL_PARAM\s0 array.
The \s-1OSSL_PARAM\s0 array and all associated storage must be freed by calling
\&\fBOSSL_PARAM_free()\fR with the functions return value.
\&\fBOSSL_PARAM_BLD_free()\fR can safely be called any time after this function is.
.PP
\&\fBOSSL_PARAM_BLD_push_\f(BI\s-1TYPE\s0\fB\fR() are a series of functions which will create
\&\s-1OSSL_PARAM\s0 objects of the specified size and correct type for the \fIval\fR
argument.
\&\fIval\fR is stored by value and an expression or auto variable can be used.
.PP
\&\fBOSSL_PARAM_BLD_push_BN()\fR is a function that will create an \s-1OSSL_PARAM\s0 object
that holds the specified \s-1BIGNUM\s0 \fIbn\fR.
If \fIbn\fR is marked as being securely allocated, its \s-1OSSL_PARAM\s0 representation
will also be securely allocated.
The \fIbn\fR argument is stored by reference and the underlying \s-1BIGNUM\s0 object
must exist until after \fBOSSL_PARAM_BLD_to_param()\fR has been called.
.PP
\&\fBOSSL_PARAM_BLD_push_BN_pad()\fR is a function that will create an \s-1OSSL_PARAM\s0 object
that holds the specified \s-1BIGNUM\s0 \fIbn\fR.
The object will be padded to occupy exactly \fIsz\fR bytes, if insufficient space
is specified an error results.
If \fIbn\fR is marked as being securely allocated, its \s-1OSSL_PARAM\s0 representation
will also be securely allocated.
The \fIbn\fR argument is stored by reference and the underlying \s-1BIGNUM\s0 object
must exist until after \fBOSSL_PARAM_BLD_to_param()\fR has been called.
.PP
\&\fBOSSL_PARAM_BLD_push_utf8_string()\fR is a function that will create an \s-1OSSL_PARAM\s0
object that references the \s-1UTF8\s0 string specified by \fIbuf\fR.
The length of the string \fIbsize\fR should not include the terminating \s-1NUL\s0 byte.
If it is zero then it will be calculated.
The string that \fIbuf\fR points to is stored by reference and must remain in
scope until after \fBOSSL_PARAM_BLD_to_param()\fR has been called.
.PP
\&\fBOSSL_PARAM_BLD_push_octet_string()\fR is a function that will create an \s-1OSSL_PARAM\s0
object that references the octet string specified by \fIbuf\fR and <bsize>.
The memory that \fIbuf\fR points to is stored by reference and must remain in
scope until after \fBOSSL_PARAM_BLD_to_param()\fR has been called.
.PP
\&\fBOSSL_PARAM_BLD_push_utf8_ptr()\fR is a function that will create an \s-1OSSL_PARAM\s0
object that references the \s-1UTF8\s0 string specified by \fIbuf\fR.
The length of the string \fIbsize\fR should not include the terminating \s-1NUL\s0 byte.
If it is zero then it will be calculated.
The string \fIbuf\fR points to is stored by reference and must remain in
scope until the \s-1OSSL_PARAM\s0 array is freed.
.PP
\&\fBOSSL_PARAM_BLD_push_octet_ptr()\fR is a function that will create an \s-1OSSL_PARAM\s0
object that references the octet string specified by \fIbuf\fR.
The memory \fIbuf\fR points to is stored by reference and must remain in
scope until the \s-1OSSL_PARAM\s0 array is freed.
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
\&\fBOSSL_PARAM_BLD_new()\fR returns the allocated \s-1OSSL_PARAM_BLD\s0 structure, or \s-1NULL\s0
on error.
.PP
\&\fBOSSL_PARAM_BLD_to_param()\fR returns the allocated \s-1OSSL_PARAM\s0 array, or \s-1NULL\s0
on error.
.PP
All of the OSSL_PARAM_BLD_push_TYPE functions return 1 on success and 0
on error.
.SH "NOTES"
.IX Header "NOTES"
\&\fBOSSL_PARAM_BLD_push_BN()\fR and \fBOSSL_PARAM_BLD_push_BN_pad()\fR currently only
support nonnegative \fB\s-1BIGNUM\s0\fRs. They return an error on negative \fB\s-1BIGNUM\s0\fRs.
.SH "EXAMPLES"
.IX Header "EXAMPLES"
Both examples creating an \s-1OSSL_PARAM\s0 array that contains an \s-1RSA\s0 key.
For both, the predefined key variables are:
.PP
.Vb 6
\& BIGNUM *n; /* modulus */
\& unsigned int e; /* public exponent */
\& BIGNUM *d; /* private exponent */
\& BIGNUM *p, *q; /* first two prime factors */
\& BIGNUM *dmp1, *dmq1; /* first two CRT exponents */
\& BIGNUM *iqmp; /* first CRT coefficient */
.Ve
.SS "Example 1"
.IX Subsection "Example 1"
This example shows how to create an \s-1OSSL_PARAM\s0 array that contains an \s-1RSA\s0
private key.
.PP
.Vb 2
\& OSSL_PARAM_BLD *bld = OSSL_PARAM_BLD_new();
\& OSSL_PARAM *params = NULL;
\&
\& if (bld == NULL
\& || !OSSL_PARAM_BLD_push_BN(bld, "n", n)
\& || !OSSL_PARAM_BLD_push_uint(bld, "e", e)
\& || !OSSL_PARAM_BLD_push_BN(bld, "d", d)
\& || !OSSL_PARAM_BLD_push_BN(bld, "rsa\-factor1", p)
\& || !OSSL_PARAM_BLD_push_BN(bld, "rsa\-factor2", q)
\& || !OSSL_PARAM_BLD_push_BN(bld, "rsa\-exponent1", dmp1)
\& || !OSSL_PARAM_BLD_push_BN(bld, "rsa\-exponent2", dmq1)
\& || !OSSL_PARAM_BLD_push_BN(bld, "rsa\-coefficient1", iqmp)
\& || (params = OSSL_PARAM_BLD_to_param(bld)) == NULL)
\& goto err;
\& OSSL_PARAM_BLD_free(bld);
\& /* Use params */
\& ...
\& OSSL_PARAM_free(params);
.Ve
.SS "Example 2"
.IX Subsection "Example 2"
This example shows how to create an \s-1OSSL_PARAM\s0 array that contains an \s-1RSA\s0
public key.
.PP
.Vb 2
\& OSSL_PARAM_BLD *bld = OSSL_PARAM_BLD_new();
\& OSSL_PARAM *params = NULL;
\&
\& if (nld == NULL
\& || !OSSL_PARAM_BLD_push_BN(bld, "n", n)
\& || !OSSL_PARAM_BLD_push_uint(bld, "e", e)
\& || (params = OSSL_PARAM_BLD_to_param(bld)) == NULL)
\& goto err;
\& OSSL_PARAM_BLD_free(bld);
\& /* Use params */
\& ...
\& OSSL_PARAM_free(params);
.Ve
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBOSSL_PARAM_int\fR\|(3), \s-1\fBOSSL_PARAM\s0\fR\|(3), \fBOSSL_PARAM_free\fR\|(3)
.SH "HISTORY"
.IX Header "HISTORY"
The functions described here were all added in OpenSSL 3.0.
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2019\-2024 The OpenSSL Project Authors. All Rights Reserved.
.PP
Licensed under the Apache License 2.0 (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>.
Zerion Mini Shell 1.0