98 lines
2.8 KiB
Groff
98 lines
2.8 KiB
Groff
.\" $OpenBSD: d2i_ASN1_SEQUENCE_ANY.3,v 1.3 2021/12/09 19:05:09 schwarze Exp $
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.\"
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.\" Copyright (c) 2017, 2021 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: December 9 2021 $
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.Dt D2I_ASN1_SEQUENCE_ANY 3
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.Os
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.Sh NAME
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.Nm d2i_ASN1_SEQUENCE_ANY ,
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.Nm i2d_ASN1_SEQUENCE_ANY ,
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.Nm d2i_ASN1_SET_ANY ,
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.Nm i2d_ASN1_SET_ANY
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.Nd decode and encode ASN.1 sequences and sets
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.Sh SYNOPSIS
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.In openssl/asn1.h
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.Ft ASN1_SEQUENCE_ANY *
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.Fo d2i_ASN1_SEQUENCE_ANY
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.Fa "ASN1_SEQUENCE_ANY **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_ASN1_SEQUENCE_ANY
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.Fa "const ASN1_SEQUENCE_ANY *val_in"
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.Fa "unsigned char **der_out"
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.Fc
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.Ft ASN1_SEQUENCE_ANY *
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.Fo d2i_ASN1_SET_ANY
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.Fa "ASN1_SEQUENCE_ANY **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_ASN1_SET_ANY
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.Fa "const ASN1_SEQUENCE_ANY *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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These functions decode and encode ASN.1 sequences and sets,
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which are also represented by the
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.Dv V_ASN1_SEQUENCE
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and
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.Dv V_ASN1_SET
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type identifier constants, respectively.
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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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.Pp
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The type
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.Vt ASN1_SEQUENCE_ANY
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is defined as
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.Vt STACK_OF(ASN1_TYPE) .
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Whether such an object represents a sequence or a set is not stored
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in the object itself but needs to be remembered separately.
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.Pp
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Like for
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.Xr d2i_ASN1_TYPE 3
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and
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.Xr i2d_ASN1_TYPE 3 ,
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the type of the individual values contained in the sequence or set
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is not specified when calling the functions.
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It might vary among the members, and it is stored together with
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each value in each
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.Vt ASN1_TYPE
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object contained in the sequence or set.
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.Sh RETURN VALUES
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.Fn d2i_ASN1_SEQUENCE_ANY
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returns an
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.Vt ASN1_SEQUENCE_ANY
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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_ASN1_SEQUENCE_ANY
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returns the number of bytes written or a negative value if an error
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occurs.
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.Sh SEE ALSO
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.Xr ASN1_item_d2i 3 ,
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.Xr ASN1_TYPE_new 3
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.Sh HISTORY
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.Fn d2i_ASN1_SEQUENCE_ANY ,
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.Fn i2d_ASN1_SEQUENCE_ANY ,
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.Fn d2i_ASN1_SET_ANY ,
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and
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.Fn i2d_ASN1_SET_ANY
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first appeared in OpenSSL 1.0.0 and have been available since
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.Ox 4.9 .
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