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/*************************************************
* ASN.1 Internals Header File *
* (C) 1999-2007 Jack Lloyd *
*************************************************/
#ifndef BOTAN_ASN1_H__
#define BOTAN_ASN1_H__
#include <botan/secmem.h>
#include <botan/exceptn.h>
namespace Botan {
/*************************************************
* ASN.1 Type and Class Tags *
*************************************************/
enum ASN1_Tag {
UNIVERSAL = 0x00,
APPLICATION = 0x40,
CONTEXT_SPECIFIC = 0x80,
PRIVATE = 0xC0,
CONSTRUCTED = 0x20,
EOC = 0x00,
BOOLEAN = 0x01,
INTEGER = 0x02,
BIT_STRING = 0x03,
OCTET_STRING = 0x04,
NULL_TAG = 0x05,
OBJECT_ID = 0x06,
ENUMERATED = 0x0A,
SEQUENCE = 0x10,
SET = 0x11,
UTF8_STRING = 0x0C,
NUMERIC_STRING = 0x12,
PRINTABLE_STRING = 0x13,
T61_STRING = 0x14,
IA5_STRING = 0x16,
VISIBLE_STRING = 0x1A,
BMP_STRING = 0x1E,
UTC_TIME = 0x17,
GENERALIZED_TIME = 0x18,
NO_OBJECT = 0xFF00,
DIRECTORY_STRING = 0xFF01
};
/*************************************************
* Basic ASN.1 Object Interface *
*************************************************/
class BOTAN_DLL 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 BOTAN_DLL 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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