Convert build system to automake per Anders Kaseorg Makefile.am

examples/decrypt.cpp

@@ -0,0 +1,60 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <assert.h>
+#include <string.h>
+#include <unistd.h>
+#include <iostream>
+
+#include "crypto.hpp"
+
+using namespace Crypto;
+
+int main( int argc, char *argv[] )
+{
+  if ( argc != 2 ) {
+    fprintf( stderr, "Usage: %s KEY\n", argv[ 0 ] );
+    return 1;
+  }
+
+  try {
+    Base64Key key( argv[ 1 ] );
+    Session session( key );
+
+    /* 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 ciphertext( input, total_size );
+    free( input );
+
+    /* Decrypt message */
+
+    Message message = session.decrypt( ciphertext );
+
+    fprintf( stderr, "Nonce = %ld\n",
+	     (long)message.nonce.val() );
+    cout << message.text;
+  } catch ( CryptoException e ) {
+    cerr << e.text << endl;
+    exit( 1 );
+  }
+
+  return 0;
+}