1 files changed, 89 insertions, 0 deletions
diff --git a/src/asn1/der_enc.h b/src/asn1/der_enc.h
new file mode 100644
index 000000000..5b3c11489
--- /dev/null
+++ b/src/asn1/der_enc.h
@@ -0,0 +1,89 @@
+/*************************************************
+* DER Encoder Header File                        *
+* (C) 1999-2007 Jack Lloyd                       *
+*************************************************/
+
+#ifndef BOTAN_DER_ENCODER_H__
+#define BOTAN_DER_ENCODER_H__
+
+#include <botan/asn1_int.h>
+#include <vector>
+
+namespace Botan {
+
+/*************************************************
+* 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[], u32bit);
+      DER_Encoder& raw_bytes(const MemoryRegion<byte>&);
+
+      DER_Encoder& encode_null();
+      DER_Encoder& encode(bool);
+      DER_Encoder& encode(u32bit);
+      DER_Encoder& encode(const class BigInt&);
+      DER_Encoder& encode(const MemoryRegion<byte>&, ASN1_Tag);
+      DER_Encoder& encode(const byte[], u32bit, 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 class 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[], u32bit, 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(u32bit j = 0; j != values.size(); ++j)
+            encode(values[j]);
+         return (*this);
+         }
+
+      DER_Encoder& encode(const class ASN1_Object&);
+      DER_Encoder& encode_if(bool, DER_Encoder&);
+
+      DER_Encoder& add_object(ASN1_Tag, ASN1_Tag, const byte[], u32bit);
+      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[], u32bit);
+            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