63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
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/* Copyright (c) 2005-2007 Apple Inc. All Rights Reserved. */
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/*
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* libDER.h - main header for libDER, a ROM-capable DER decoding library.
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*
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* Created Nov. 4 2005 by dmitch
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*/
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#ifndef _LIB_DER_H_
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#define _LIB_DER_H_
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#include <libDER/libDER_config.h>
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__BEGIN_DECLS
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/*
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* Error returns generated by this library.
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*/
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typedef enum {
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DR_Success = 0,
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DR_EndOfSequence, /* end of sequence or set */
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DR_UnexpectedTag, /* unexpected tag found while decoding */
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DR_DecodeError, /* misc. decoding error (badly formatted DER) */
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DR_Unimplemented, /* function not implemented in this configuration */
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DR_IncompleteSeq, /* incomplete sequence */
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DR_ParamErr, /* incoming parameter error */
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DR_BufOverflow /* buffer overflow */
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/* etc. */
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} DERReturn;
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/*
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* Primary representation of a block of memory.
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*/
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typedef struct {
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DERByte *data;
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DERSize length;
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} DERItem;
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/*
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* The structure of a sequence during decode or encode is expressed as
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* an array of DERItemSpecs. While decoding or encoding a sequence,
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* each item in the sequence corresponds to one DERItemSpec.
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*/
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typedef struct {
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DERSize offset; /* offset of destination DERItem */
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DERTag tag; /* DER tag */
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DERShort options; /* DER_DEC_xxx or DER_ENC_xxx */
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} DERItemSpec;
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/*
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* Macro to obtain offset of a DERDecodedInfo within a struct.
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* FIXME this is going to need reworking to avoid compiler warnings
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* on 64-bit compiles. It'll work OK as long as an offset can't be larger
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* than a DERSize, but the cast from a pointer to a DERSize may
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* provoke compiler warnings.
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*/
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#define DER_OFFSET(type, field) ((DERSize)(&((type *)0)->field))
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__END_DECLS
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#endif /* _LIB_DER_H_ */
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