90 lines
2.2 KiB
C
90 lines
2.2 KiB
C
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/* Copyright (c) 2005-2007 Apple Inc. All Rights Reserved. */
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/*
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* libDER_config.h - platform dependent #defines and typedefs for libDER
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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_CONFIG_H_
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#define _LIB_DER_CONFIG_H_
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#include <stdint.h>
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#include <string.h>
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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/*
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* Basic data types: unsigned 8-bit integer, unsigned 32-bit integer
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*/
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typedef uint8_t DERByte;
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typedef uint16_t DERShort;
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typedef uint32_t DERSize;
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/*
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* Use these #defines of you have memset, memmove, and memcmp; else
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* write your own equivalents.
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*/
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#define DERMemset(ptr, c, len) memset(ptr, c, len)
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#define DERMemmove(dst, src, len) memmove(dst, src, len)
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#define DERMemcmp(b1, b2, len) memcmp(b1, b2, len)
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/***
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*** Compile time options to trim size of the library.
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***/
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/* enable general DER encode */
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#define DER_ENCODE_ENABLE 1
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/* enable general DER decode */
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#define DER_DECODE_ENABLE 1
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#ifndef DER_MULTIBYTE_TAGS
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/* enable multibyte tag support. */
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#define DER_MULTIBYTE_TAGS 1
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#endif
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#ifndef DER_TAG_SIZE
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/* Iff DER_MULTIBYTE_TAGS is 1 this is the sizeof(DERTag) in bytes. Note that
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tags are still encoded and decoded from a minimally encoded DER
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represantation. This value determines how big each DERItemSpecs is, we
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choose 2 since that makes DERItemSpecs 8 bytes wide. */
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#define DER_TAG_SIZE 8
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#endif
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/* ---------------------- Do not edit below this line ---------------------- */
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/*
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* Logical representation of a tag (the encoded representation is always in
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* the minimal number of bytes). The top 3 bits encode class and method
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* The remaining bits encode the tag value. To obtain smaller DERItemSpecs
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* sizes, choose the smallest type that fits your needs. Most standard ASN.1
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* usage only needs single byte tags, but ocasionally custom applications
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* require a larger tag namespace.
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*/
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#if DER_MULTIBYTE_TAGS
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#if DER_TAG_SIZE == 1
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typedef uint8_t DERTag;
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#elif DER_TAG_SIZE == 2
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typedef uint16_t DERTag;
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#elif DER_TAG_SIZE == 4
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typedef uint32_t DERTag;
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#elif DER_TAG_SIZE == 8
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typedef uint64_t DERTag;
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#else
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#error DER_TAG_SIZE invalid
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#endif
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#else /* DER_MULTIBYTE_TAGS */
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typedef DERByte DERTag;
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#endif /* !DER_MULTIBYTE_TAGS */
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__END_DECLS
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#endif /* _LIB_DER_CONFIG_H_ */
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