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/*
* DER Encoder
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_DER_ENCODER_H__
#define BOTAN_DER_ENCODER_H__
#include <botan/asn1_int.h>
#include <vector>
namespace Botan {
class BigInt;
class ASN1_Object;
/**
* General DER Encoding Object
*/
class BOTAN_DLL DER_Encoder
{
public:
SecureVector<byte> get_contents();
DER_Encoder& start_cons(ASN1_Tag, ASN1_Tag = UNIVERSAL);
DER_Encoder& end_cons();
DER_Encoder& start_explicit(u16bit);
DER_Encoder& end_explicit();
DER_Encoder& raw_bytes(const byte[], size_t);
DER_Encoder& raw_bytes(const MemoryRegion<byte>&);
DER_Encoder& encode_null();
DER_Encoder& encode(bool);
DER_Encoder& encode(u32bit);
DER_Encoder& encode(const BigInt&);
DER_Encoder& encode(const MemoryRegion<byte>&, ASN1_Tag);
DER_Encoder& encode(const byte[], size_t, ASN1_Tag);
DER_Encoder& encode(bool, ASN1_Tag, ASN1_Tag = CONTEXT_SPECIFIC);
DER_Encoder& encode(u32bit, ASN1_Tag, ASN1_Tag = CONTEXT_SPECIFIC);
DER_Encoder& encode(const BigInt&, ASN1_Tag,
ASN1_Tag = CONTEXT_SPECIFIC);
DER_Encoder& encode(const MemoryRegion<byte>&, ASN1_Tag,
ASN1_Tag, ASN1_Tag = CONTEXT_SPECIFIC);
DER_Encoder& encode(const byte[], size_t, ASN1_Tag,
ASN1_Tag, ASN1_Tag = CONTEXT_SPECIFIC);
template<typename T>
DER_Encoder& encode_optional(const T& value, const T& default_value)
{
if(value != default_value)
encode(value);
return (*this);
}
template<typename T>
DER_Encoder& encode_list(const std::vector<T>& values)
{
for(size_t i = 0; i != values.size(); ++i)
encode(values[i]);
return (*this);
}
DER_Encoder& encode(const ASN1_Object&);
DER_Encoder& encode_if(bool, DER_Encoder&);
DER_Encoder& add_object(ASN1_Tag, ASN1_Tag, const byte[], size_t);
DER_Encoder& add_object(ASN1_Tag, ASN1_Tag, const MemoryRegion<byte>&);
DER_Encoder& add_object(ASN1_Tag, ASN1_Tag, const std::string&);
DER_Encoder& add_object(ASN1_Tag, ASN1_Tag, byte);
private:
class DER_Sequence
{
public:
ASN1_Tag tag_of() const;
SecureVector<byte> get_contents();
void add_bytes(const byte[], size_t);
DER_Sequence(ASN1_Tag, ASN1_Tag);
private:
ASN1_Tag type_tag, class_tag;
SecureVector<byte> contents;
std::vector< SecureVector<byte> > set_contents;
};
SecureVector<byte> contents;
std::vector<DER_Sequence> subsequences;
};
}
#endif
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