Separate modules by subdirectory

src/crypto/crypto.h

@@ -0,0 +1,70 @@
+#ifndef CRYPTO_HPP
+#define CRYPTO_HPP
+
+#include "ae.h"
+#include <string>
+#include <string.h>
+
+using namespace std;
+
+long int myatoi( char *str );
+
+namespace Crypto {
+  class CryptoException {
+  public:
+    string text;
+    CryptoException( string s_text ) : text( s_text ) {};
+  };
+
+  class Base64Key {
+  private:
+    unsigned char key[ 16 ];
+
+  public:
+    Base64Key(); /* random key */
+    Base64Key( string printable_key );
+    string printable_key( void ) const;
+    unsigned char *data( void ) { return key; }
+  };
+
+  class Nonce {
+  private:
+    char bytes[ 12 ];
+
+  public:
+    Nonce( uint64_t val );
+    Nonce( char *s_bytes, size_t len );
+    
+    string cc_str( void ) { return string( (char *)( bytes + 4 ), 8 ); }
+    char *data( void ) { return bytes; }
+    uint64_t val( void );
+  };
+  
+  class Message {
+  public:
+    Nonce nonce;
+    string text;
+    
+    Message( char *nonce_bytes, size_t nonce_len,
+	     char *text_bytes, size_t text_len );
+    Message( Nonce s_nonce, string s_text );
+  };
+  
+  class Session {
+  private:
+    Base64Key key;
+    ae_ctx *ctx;
+    
+  public:
+    Session( Base64Key s_key );
+    ~Session();
+    
+    string encrypt( Message plaintext );
+    Message decrypt( string ciphertext );
+    
+    Session( const Session & );
+    Session & operator=( const Session & );
+  };
+}
+
+#endif