.\"	$OpenBSD: PEM_read_SSL_SESSION.3,v 1.3 2018/03/27 17:35:50 schwarze Exp $
.\"	OpenSSL doc/man3/PEM_read_CMS.pod b97fdb57 Nov 11 09:33:09 2016 +0100
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.\" This file was written by Rich Salz <rsalz@openssl.org>.
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.Dd $Mdocdate: March 27 2018 $
.Dt PEM_READ_SSL_SESSION 3
.Os
.Sh NAME
.Nm PEM_read_SSL_SESSION ,
.Nm PEM_read_bio_SSL_SESSION ,
.Nm PEM_write_SSL_SESSION ,
.Nm PEM_write_bio_SSL_SESSION
.Nd encode and decode SSL session objects in PEM format
.Sh SYNOPSIS
.In openssl/ssl.h
.Ft SSL_SESSION *
.Fo PEM_read_SSL_SESSION
.Fa "FILE *fp"
.Fa "SSL_SESSION **a"
.Fa "pem_password_cb *cb"
.Fa "void *u"
.Fc
.Ft SSL_SESSION *
.Fo PEM_read_bio_SSL_SESSION
.Fa "BIO *bp"
.Fa "SSL_SESSION **a"
.Fa "pem_password_cb *cb"
.Fa "void *u"
.Fc
.Ft int
.Fo PEM_write_SSL_SESSION
.Fa "FILE *fp"
.Fa "const SSL_SESSION *a"
.Fc
.Ft int
.Fo PEM_write_bio_SSL_SESSION
.Fa "BIO *bp"
.Fa "const SSL_SESSION *a"
.Fc
.Sh DESCRIPTION
These routines convert between local instances of ASN.1
.Vt SSL_SESSION
objects and the PEM encoding.
.Pp
.Fn PEM_read_SSL_SESSION
reads a PEM-encoded
.Vt SSL_SESSION
object from the file
.Fa fp
and returns it.
The
.Fa cb
and
.Fa u
parameters are as described in
.Xr PEM_read_bio_PrivateKey 3 .
.Pp
.Fn PEM_read_bio_SSL_SESSION
is similar to
.Fn PEM_read_SSL_SESSION
but reads from the BIO
.Fa bp .
.Pp
.Fn PEM_write_SSL_SESSION
writes the PEM encoding of the object
.Fa a
to the file
.Fa fp .
.Pp
.Fn PEM_write_bio_SSL_SESSION
similarly writes to the BIO
.Fa bp .
.Sh RETURN VALUES
.Fn PEM_read_SSL_SESSION
and
.Fn PEM_read_bio_SSL_SESSION
return a pointer to an allocated object, which should be released by
calling
.Xr SSL_SESSION_free 3 ,
or
.Dv NULL
on error.
.Pp
.Fn PEM_write_SSL_SESSION
and
.Fn PEM_write_bio_SSL_SESSION
return the number of bytes written or 0 on error.
.Sh SEE ALSO
.Xr PEM_read 3
.Sh HISTORY
.Fn PEM_read_SSL_SESSION
and
.Fn PEM_write_SSL_SESSION
first appeared in SSLeay 0.5.2.
.Fn PEM_read_bio_SSL_SESSION
and
.Fn PEM_write_bio_SSL_SESSION
first appeared in SSLeay 0.6.0.
These functions have been available since
.Ox 2.4 .