Move almost all of the ASN.1, BER, and DER codec related code into new

module asn1

Move hex and base64 codecs into new codecs directory. Also move zlib and
bzip2 to codecs from compress.

1 files changed, 106 insertions, 0 deletions

diff --git a/src/asn1/asn1_int.h b/src/asn1/asn1_int.h
new file mode 100644
index 000000000..3e0562b9c
--- /dev/null
+++ b/src/asn1/asn1_int.h
@@ -0,0 +1,106 @@
+/*************************************************
+* 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