Shorten copyright notice.

[paraslash.git] / gcrypt.c

diff --git a/gcrypt.c b/gcrypt.c
index 0ba8d526a3dd224135a73991e5b149c4a4eef1fb..d5cb49a45c2d6da4e6249b6810a298a0460c8b1f 100644 (file)
--- a/gcrypt.c
+++ b/gcrypt.c
@@ -1,8 +1,4 @@
-/*
- * Copyright (C) 2011 Andre Noll <maan@tuebingen.mpg.de>
- *
- * Licensed under the GPL v2. For licencing details see COPYING.
- */
+/* Copyright (C) 2011 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
 
 /** \file gcrypt.c Libgrcypt-based encryption/decryption routines. */
 
@@ -617,33 +613,20 @@ struct stream_cipher {
        gcry_cipher_hd_t handle;
 };
 
-struct stream_cipher *sc_new(const unsigned char *data, int len,
-               bool use_aes)
+struct stream_cipher *sc_new(const unsigned char *data, int len)
 {
        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) {
-               PARA_ERROR_LOG("%s\n", gcrypt_strerror(gret));
-               free(sc);
-               return NULL;
-       }
-       gret = gcry_cipher_setkey(sc->handle, data, (size_t)len);
+       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;
 }