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.\" ========================================================================
.\"
.IX Title "SSL_CTX_add_extra_chain_cert 3"
.TH SSL_CTX_add_extra_chain_cert 3 "2014-10-15" "1.0.1j" "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"
SSL_CTX_add_extra_chain_cert \- add certificate to chain
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/ssl.h>
\&
\& long SSL_CTX_add_extra_chain_cert(SSL_CTX ctx, X509 *x509)
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fISSL_CTX_add_extra_chain_cert()\fR adds the certificate \fBx509\fR to the certificate
chain presented together with the certificate. Several certificates
can be added one after the other.
.SH "NOTES"
.IX Header "NOTES"
When constructing the certificate chain, the chain will be formed from
these certificates explicitly specified. If no chain is specified,
the library will try to complete the chain from the available \s-1CA\s0
certificates in the trusted \s-1CA\s0 storage, see
\&\fISSL_CTX_load_verify_locations\fR\|(3).
.PP
The \fBx509\fR certificate provided to \fISSL_CTX_add_extra_chain_cert()\fR will be freed by the library when the \fB\s-1SSL_CTX\s0\fR is destroyed. An application \fBshould not\fR free the \fBx509\fR object.
.SH "RESTRICTIONS"
.IX Header "RESTRICTIONS"
Only one set of extra chain certificates can be specified per \s-1SSL_CTX\s0
structure. Different chains for different certificates (for example if both
\&\s-1RSA\s0 and \s-1DSA\s0 certificates are specified by the same server) or different \s-1SSL\s0
structures with the same parent \s-1SSL_CTX\s0 cannot be specified using this
function.
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
\&\fISSL_CTX_add_extra_chain_cert()\fR returns 1 on success. Check out the
error stack to find out the reason for failure otherwise.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fIssl\fR\|(3),
\&\fISSL_CTX_use_certificate\fR\|(3),
\&\fISSL_CTX_set_client_cert_cb\fR\|(3),
\&\fISSL_CTX_load_verify_locations\fR\|(3)
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