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/*************************************************
* ASN.1 Internals Header File *
* (C) 1999-2007 The Botan Project *
*************************************************/
#ifndef BOTAN_ASN1_H__
#define BOTAN_ASN1_H__
#include <botan/secmem.h>
#include <botan/enums.h>
#include <botan/exceptn.h>
namespace Botan {
/*************************************************
* Basic ASN.1 Object Interface *
*************************************************/
class ASN1_Object
{
public:
virtual void encode_into(class DER_Encoder&) const = 0;
virtual void decode_from(class BER_Decoder&) = 0;
virtual ~ASN1_Object() {}
};
/*************************************************
* BER Encoded Object *
*************************************************/
class BER_Object
{
public:
void assert_is_a(ASN1_Tag, ASN1_Tag);
ASN1_Tag type_tag, class_tag;
SecureVector<byte> value;
};
/*************************************************
* ASN.1 Utility Functions *
*************************************************/
class DataSource;
namespace ASN1 {
SecureVector<byte> put_in_sequence(const MemoryRegion<byte>&);
std::string to_string(const BER_Object&);
bool maybe_BER(DataSource&);
}
/*************************************************
* General BER Decoding Error Exception *
*************************************************/
struct BER_Decoding_Error : public Decoding_Error
{
BER_Decoding_Error(const std::string&);
};
/*************************************************
* Exception For Incorrect BER Taggings *
*************************************************/
struct BER_Bad_Tag : public BER_Decoding_Error
{
BER_Bad_Tag(const std::string&, ASN1_Tag);
BER_Bad_Tag(const std::string&, ASN1_Tag, ASN1_Tag);
};
}
#endif
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