.\" 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 "BIO_GET_EX_NEW_INDEX 3ossl"
.TH BIO_GET_EX_NEW_INDEX 3ossl "2026-01-27" "3.5.5" "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"
BIO_get_ex_new_index, BIO_set_ex_data, BIO_get_ex_data,
BIO_set_app_data, BIO_get_app_data,
DH_get_ex_new_index, DH_set_ex_data, DH_get_ex_data,
DSA_get_ex_new_index, DSA_set_ex_data, DSA_get_ex_data,
EC_KEY_get_ex_new_index, EC_KEY_set_ex_data, EC_KEY_get_ex_data,
ENGINE_get_ex_new_index, ENGINE_set_ex_data, ENGINE_get_ex_data,
EVP_PKEY_get_ex_new_index, EVP_PKEY_set_ex_data, EVP_PKEY_get_ex_data,
RSA_get_ex_new_index, RSA_set_ex_data, RSA_get_ex_data,
RSA_set_app_data, RSA_get_app_data,
SSL_get_ex_new_index, SSL_set_ex_data, SSL_get_ex_data,
SSL_set_app_data, SSL_get_app_data,
SSL_CTX_get_ex_new_index, SSL_CTX_set_ex_data, SSL_CTX_get_ex_data,
SSL_CTX_set_app_data, SSL_CTX_get_app_data,
SSL_SESSION_get_ex_new_index, SSL_SESSION_set_ex_data, SSL_SESSION_get_ex_data,
SSL_SESSION_set_app_data, SSL_SESSION_get_app_data,
UI_get_ex_new_index, UI_set_ex_data, UI_get_ex_data,
UI_set_app_data, UI_get_app_data,
X509_STORE_CTX_get_ex_new_index, X509_STORE_CTX_set_ex_data, X509_STORE_CTX_get_ex_data,
X509_STORE_CTX_set_app_data, X509_STORE_CTX_get_app_data,
X509_STORE_get_ex_new_index, X509_STORE_set_ex_data, X509_STORE_get_ex_data,
X509_get_ex_new_index, X509_set_ex_data, X509_get_ex_data
\&\- application\-specific data
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/x509.h>
\&
\& int TYPE_get_ex_new_index(long argl, void *argp,
\&                           CRYPTO_EX_new *new_func,
\&                           CRYPTO_EX_dup *dup_func,
\&                           CRYPTO_EX_free *free_func);
\&
\& int TYPE_set_ex_data(TYPE *d, int idx, void *arg);
\&
\& void *TYPE_get_ex_data(const TYPE *d, int idx);
\&
\& #define TYPE_set_app_data(TYPE *d, void *arg)
\& #define TYPE_get_app_data(TYPE *d)
.Ve
.PP
The following functions have been deprecated since OpenSSL 3.0, and can be
hidden entirely by defining \fB\s-1OPENSSL_API_COMPAT\s0\fR with a suitable version value,
see \fBopenssl_user_macros\fR\|(7):
.PP
.Vb 10
\& int DH_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
\&                         CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
\& int DH_set_ex_data(DH *type, int idx, void *arg);
\& void *DH_get_ex_data(DH *type, int idx);
\& int DSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
\&                          CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
\& int DSA_set_ex_data(DSA *type, int idx, void *arg);
\& void *DSA_get_ex_data(DSA *type, int idx);
\& int EC_KEY_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
\&                             CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
\& int EC_KEY_set_ex_data(EC_KEY *type, int idx, void *arg);
\& void *EC_KEY_get_ex_data(EC_KEY *type, int idx);
\& int RSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
\&                          CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
\& int RSA_set_ex_data(RSA *type, int idx, void *arg);
\& void *RSA_get_ex_data(RSA *type, int idx);
\& int RSA_set_app_data(RSA *type, void *arg);
\& void *RSA_get_app_data(RSA *type);
\& int ENGINE_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
\&                             CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
\& int ENGINE_set_ex_data(ENGINE *type, int idx, void *arg);
\& void *ENGINE_get_ex_data(ENGINE *type, int idx);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
In the description here, \fI\s-1TYPE\s0\fR is used a placeholder
for any of the OpenSSL datatypes listed in \fBCRYPTO_get_ex_new_index\fR\|(3).
.PP
All functions with a \fI\s-1TYPE\s0\fR of \fB\s-1DH\s0\fR, \fB\s-1DSA\s0\fR, \fB\s-1RSA\s0\fR and \fB\s-1EC_KEY\s0\fR are deprecated.
Applications should instead use \fBEVP_PKEY_set_ex_data()\fR,
\&\fBEVP_PKEY_get_ex_data()\fR and \fBEVP_PKEY_get_ex_new_index()\fR.
.PP
All functions with a \fI\s-1TYPE\s0\fR of \fB\s-1ENGINE\s0\fR are deprecated.
Applications using engines should be replaced by providers.
.PP
These functions handle application-specific data for OpenSSL data
structures.
.PP
\&\fBTYPE_get_ex_new_index()\fR is a macro that calls \fBCRYPTO_get_ex_new_index()\fR
with the correct \fBindex\fR value.
.PP
\&\fBTYPE_set_ex_data()\fR is a function that calls \fBCRYPTO_set_ex_data()\fR with
an offset into the opaque exdata part of the \s-1TYPE\s0 object. \fId\fR \fB\s-1MUST NOT\s0\fR be \s-1NULL.\s0
.PP
\&\fBTYPE_get_ex_data()\fR is a function that calls \fBCRYPTO_get_ex_data()\fR with
an offset into the opaque exdata part of the \s-1TYPE\s0 object. \fId\fR \fB\s-1MUST NOT\s0\fR be \s-1NULL.\s0
.PP
For compatibility with previous releases, the exdata index of zero is
reserved for \*(L"application data.\*(R" There are two convenience functions for
this.
\&\fBTYPE_set_app_data()\fR is a macro that invokes \fBTYPE_set_ex_data()\fR with
\&\fBidx\fR set to zero.
\&\fBTYPE_get_app_data()\fR is a macro that invokes \fBTYPE_get_ex_data()\fR with
\&\fBidx\fR set to zero.
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
\&\fBTYPE_get_ex_new_index()\fR returns a new index on success or \-1 on error.
.PP
\&\fBTYPE_set_ex_data()\fR returns 1 on success or 0 on error.
.PP
\&\fBTYPE_get_ex_data()\fR returns the application data or \s-1NULL\s0 if an error occurred.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBCRYPTO_get_ex_new_index\fR\|(3).
.SH "HISTORY"
.IX Header "HISTORY"
The functions \fBDH_get_ex_new_index()\fR, \fBDH_set_ex_data()\fR, \fBDH_get_ex_data()\fR,
\&\fBDSA_get_ex_new_index()\fR, \fBDSA_set_ex_data()\fR, \fBDSA_get_ex_data()\fR,
\&\fBEC_KEY_get_ex_new_index()\fR, \fBEC_KEY_set_ex_data()\fR, \fBEC_KEY_get_ex_data()\fR,
\&\fBENGINE_get_ex_new_index()\fR, \fBENGINE_set_ex_data()\fR, \fBENGINE_get_ex_data()\fR,
\&\fBRSA_get_ex_new_index()\fR, \fBRSA_set_ex_data()\fR, \fBRSA_get_ex_data()\fR,
\&\fBRSA_set_app_data()\fR and \fBRSA_get_app_data()\fR were deprecated in OpenSSL 3.0.
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2015\-2021 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>.
