Import AES-OCB3 implementation and driver code

encrypt.cpp

@@ -0,0 +1,74 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <assert.h>
+#include <string.h>
+#include <unistd.h>
+#include <iostream>
+
+#include "crypto.hpp"
+
+long int myatoi( char *str )
+{
+  char *end;
+
+  errno = 0;
+  long int ret = strtol( str, &end, 10 );
+
+  if ( ( errno != 0 )
+       || ( end != str + strlen( str ) ) ) {
+    throw CryptoException( "Bad integer." );
+  }
+
+  return ret;
+}
+
+int main( int argc, char *argv[] )
+{
+  if ( argc != 2 ) {
+    fprintf( stderr, "Usage: %s NONCE\n", argv[ 0 ] );
+    return 1;
+  }
+
+  try {
+    Base64Key key;
+    Session session( key );
+    Nonce nonce( myatoi( argv[ 1 ] ) );
+
+    /* Read input */
+    char *input = NULL;
+    int total_size = 0;
+
+    while ( 1 ) {
+      unsigned char buf[ 16384 ];
+      ssize_t bytes_read = read( STDIN_FILENO, buf, 16384 );
+      if ( bytes_read == 0 ) { /* EOF */
+	break;
+      } else if ( bytes_read < 0 ) {
+	perror( "read" );
+	exit( 1 );
+      } else {
+	input = (char *)realloc( input, total_size + bytes_read );
+	assert( input );
+	memcpy( input + total_size, buf, bytes_read );
+	total_size += bytes_read;
+      }
+    }
+
+    string plaintext( input, total_size );
+    free( input );
+
+    /* Encrypt message */
+
+    string ciphertext = session.encrypt( Message( nonce, plaintext ) );
+
+    cerr << "Key: " << key.printable_key() << endl;
+
+    cout << ciphertext;
+  } catch ( CryptoException e ) {
+    cerr << e.text << endl;
+    exit( 1 );
+  }
+
+  return 0;
+}