76 lines
2.4 KiB
Groff
76 lines
2.4 KiB
Groff
.\" $OpenBSD: d2i_X509_ATTRIBUTE.3,v 1.3 2018/03/27 17:35:50 schwarze Exp $
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.\"
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.\" Copyright (c) 2016 Ingo Schwarze <schwarze@openbsd.org>
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.\"
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.\" Permission to use, copy, modify, and distribute this software for any
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.\" purpose with or without fee is hereby granted, provided that the above
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.\" copyright notice and this permission notice appear in all copies.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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.\"
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.Dd $Mdocdate: March 27 2018 $
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.Dt D2I_X509_ATTRIBUTE 3
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.Os
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.Sh NAME
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.Nm d2i_X509_ATTRIBUTE ,
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.Nm i2d_X509_ATTRIBUTE
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.\" In the following line, "X.501" and "Attribute" are not typos.
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.\" The "Attribute" type is defined in X.501, not in X.509.
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.\" The type in called "Attribute" with capital "A", not "attribute".
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.Nd decode and encode generic X.501 Attribute
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.Sh SYNOPSIS
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.In openssl/x509.h
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.Ft X509_ATTRIBUTE *
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.Fo d2i_X509_ATTRIBUTE
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.Fa "X509_ATTRIBUTE **val_out"
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.Fa "const unsigned char **der_in"
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.Fa "long length"
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.Fc
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.Ft int
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.Fo i2d_X509_ATTRIBUTE
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.Fa "X509_ATTRIBUTE *val_in"
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.Fa "unsigned char **der_out"
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.Fc
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.Sh DESCRIPTION
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.Fn d2i_X509_ATTRIBUTE
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and
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.Fn i2d_X509_ATTRIBUTE
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decode and encode a generic ASN.1
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.Vt Attribute
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structure defined in X.501 section 8.2.
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For details about the semantics, examples, caveats, and bugs, see
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.Xr ASN1_item_d2i 3 .
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.Sh RETURN VALUES
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.Fn d2i_X509_ATTRIBUTE
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returns an
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.Vt X509_ATTRIBUTE
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object or
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.Dv NULL
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if an error occurs.
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.Pp
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.Fn i2d_X509_ATTRIBUTE
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returns the number of bytes successfully encoded or a negative value
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if an error occurs.
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.Sh SEE ALSO
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.Xr ASN1_item_d2i 3 ,
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.Xr d2i_PKCS12 3 ,
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.Xr d2i_PKCS8_PRIV_KEY_INFO 3 ,
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.Xr d2i_X509_EXTENSION 3 ,
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.Xr d2i_X509_REQ 3 ,
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.Xr X509_ATTRIBUTE_new 3
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.Sh STANDARDS
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ITU-T Recommendation X.501, also known as ISO/IEC 9594-2: Information
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Technology Open Systems Interconnection The Directory: Models,
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section 8.2: Overall structure
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.Sh HISTORY
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.Fn d2i_X509_ATTRIBUTE
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and
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.Fn i2d_X509_ATTRIBUTE
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first appeared in SSLeay 0.5.1 and have been available since
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.Ox 2.4 .
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