gcrypt: Fix format string in debug output.

[paraslash.git] / gcrypt.c

diff --git a/gcrypt.c b/gcrypt.c
index 1cfd10964c20e9ab30d77cff432405106cdb6836..f4d4cc6f9d20678ef5a6fa5b41672db108ea2345 100644 (file)
--- a/gcrypt.c
+++ b/gcrypt.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2014 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2011-2014 Andre Noll <maan@tuebingen.mpg.de>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
@@ -26,7 +26,7 @@ static void dump_buffer(const char *msg, unsigned char *buf, int len)
 {
        int i;
 
-       fprintf(stderr, "%s (%u bytes): ", msg, len);
+       fprintf(stderr, "%s (%d bytes): ", msg, len);
        for (i = 0; i < len; i++)
                fprintf(stderr, "%02x ", buf[i]);
        fprintf(stderr, "\n");
@@ -912,11 +912,25 @@ struct stream_cipher {
        gcry_cipher_hd_t handle;
 };
 
-struct stream_cipher *sc_new(const unsigned char *data, int len)
+struct stream_cipher *sc_new(const unsigned char *data, int len,
+               bool use_aes)
 {
        gcry_error_t gret;
-
        struct stream_cipher *sc = para_malloc(sizeof(*sc));
+
+       if (use_aes) {
+               assert(len >= 2 * AES_CRT128_BLOCK_SIZE);
+               gret = gcry_cipher_open(&sc->handle, GCRY_CIPHER_AES128,
+                       GCRY_CIPHER_MODE_CTR, 0);
+               assert(gret == 0);
+               gret = gcry_cipher_setkey(sc->handle, data,
+                       AES_CRT128_BLOCK_SIZE);
+               assert(gret == 0);
+               gret = gcry_cipher_setctr(sc->handle,
+                       data + AES_CRT128_BLOCK_SIZE, AES_CRT128_BLOCK_SIZE);
+               assert(gret == 0);
+               return sc;
+       }
        gret = gcry_cipher_open(&sc->handle, GCRY_CIPHER_ARCFOUR,
                GCRY_CIPHER_MODE_STREAM, 0);
        if (gret) {