1 files changed, 56 insertions, 0 deletions
diff --git a/rdd.c b/rdd.c
new file mode 100644
index 0000000..321ad89
--- /dev/null
+++ b/rdd.c
@@ -0,0 +1,56 @@
+/* rdd - random data dump */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "sosemanuk.h"
+
+#define fail(i,s) write(2, s, (sizeof s)-1), exit(i);
+
+int
+main(int argc, char *argv[])
+{
+  unsigned char key[32], iv[16], buf[120*512];
+  sosemanuk_key_context kc;
+  sosemanuk_run_context rc;
+
+  int fd, c, i, v=0, r=4;
+  char *src = "/dev/urandom";
+  
+  while ((c = getopt(argc, argv, "i:r:v")) != -1)
+    switch(c) {
+    case 'i': src = optarg; break;
+    case 'r': r = atoi(optarg); break;
+    case 'v': v = 1; break;
+    default:
+    usage:
+      fail(1, "Usage: rdd [-i RANDOMSOURCE] [-r REKEYMB] [-v]\n");
+    }
+
+  if (argc > optind)
+    goto usage;
+
+  if ((fd = open(src, O_RDONLY)) < 0)
+    fail(2, "failed to open random source\n");
+  
+  if (read(fd, key, sizeof key) != sizeof key)
+    fail(3, "failed to read key from random source\n");
+  sosemanuk_schedule(&kc, key, sizeof key);
+
+  while (1) {
+    if (read(fd, iv, sizeof iv) != sizeof iv)
+      fail(3, "failed to read iv from random source\n");
+    sosemanuk_init(&rc, &kc, iv, sizeof iv);
+    if (v)
+      write(2, ".", 1);
+
+    for (i = 0; r<0 || i<r*1024*1024; i+=sizeof buf) {
+      sosemanuk_prng(&rc, buf, sizeof buf);
+      while (write(1, buf, sizeof buf) != sizeof buf)
+        if (errno && errno != EINTR)
+          fail(4, "write error\n");
+    }
+  }  
+}