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Rev: src/nettle/nettle-openssl.c:1.1

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+/* nettle-openssl.c
+ *
+ * Glue that's used only by the benchmark, and subject to change.
+ */
+
+/* nettle, low-level cryptographics library
+ *
+ * Copyright (C) 2002 Niels Möller
+ *  
+ * The nettle library is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or (at your
+ * option) any later version.
+ * 
+ * The nettle library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+ * License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with the nettle library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ */
+
+#if HAVE_CONFIG_H
+# include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+/* Openssl glue, for comparative benchmarking only */
+
+#if HAVE_LIBCRYPTO
+
+#include "nettle-internal.h"
+
+#include <openssl/blowfish.h>
+#include <openssl/des.h>
+#include <openssl/cast.h>
+
+#include <assert.h>
+
+
+/* Blowfish */
+static void
+openssl_bf_set_key(void *ctx, unsigned length, const uint8_t *key)
+{
+  BF_set_key(ctx, length, key);
+}
+
+
+static void
+openssl_bf_encrypt(void *ctx, unsigned length,
+                  uint8_t *dst, const uint8_t *src)
+{
+  assert (!(length % BF_BLOCK));
+  while (length)
+    {
+      BF_ecb_encrypt(src, dst, ctx, BF_ENCRYPT);
+      length -= BF_BLOCK;
+      dst += BF_BLOCK;
+      src += BF_BLOCK;
+    }
+}
+
+static void
+openssl_bf_decrypt(void *ctx, unsigned length,
+                  uint8_t *dst, const uint8_t *src)
+{
+  assert (!(length % BF_BLOCK));
+  while (length)
+    {
+      BF_ecb_encrypt(src, dst, ctx, BF_DECRYPT);
+      length -= BF_BLOCK;
+      dst += BF_BLOCK;
+      src += BF_BLOCK;
+    }
+}
+
+const struct nettle_cipher
+nettle_openssl_blowfish128 = {
+  "openssl bf128", sizeof(BF_KEY),
+  /* Claim no block size, so that the benchmark doesn't try CBC mode
+   * (as openssl cipher + nettle cbc is somewhat pointless to
+   * benchmark). */
+  0, 16,
+  openssl_bf_set_key, openssl_bf_set_key,
+  openssl_bf_encrypt, openssl_bf_decrypt
+};
+
+
+/* DES */
+static void
+openssl_des_set_key(void *ctx, unsigned length, const uint8_t *key)
+{
+  assert(length == 8);
+  des_key_sched((char *) key, ctx);
+}
+
+#define DES_BLOCK_SIZE 8
+
+static void
+openssl_des_encrypt(void *ctx, unsigned length,
+                   uint8_t *dst, const uint8_t *src)
+{
+  assert (!(length % DES_BLOCK_SIZE));
+  while (length)
+    {
+      des_ecb_encrypt((char *) src, (char *) dst, ctx, DES_ENCRYPT);
+      length -= DES_BLOCK_SIZE;
+      dst += DES_BLOCK_SIZE;
+      src += DES_BLOCK_SIZE;
+    }
+}
+
+static void
+openssl_des_decrypt(void *ctx, unsigned length,
+                   uint8_t *dst, const uint8_t *src)
+{
+  assert (!(length % DES_BLOCK_SIZE));
+  while (length)
+    {
+      des_ecb_encrypt((char *) src, (char *) dst, ctx, DES_DECRYPT);
+      length -= DES_BLOCK_SIZE;
+      dst += DES_BLOCK_SIZE;
+      src += DES_BLOCK_SIZE;
+    }
+}
+
+const struct nettle_cipher
+nettle_openssl_des = {
+  "openssl des", sizeof(des_key_schedule),
+  /* Claim no block size, so that the benchmark doesn't try CBC mode
+   * (as openssl cipher + nettle cbc is somewhat pointless to
+   * benchmark). */
+  0, 8,
+  openssl_des_set_key, openssl_des_set_key,
+  openssl_des_encrypt, openssl_des_decrypt
+};
+
+
+/* Cast128 */
+static void
+openssl_cast_set_key(void *ctx, unsigned length, const uint8_t *key)
+{
+  CAST_set_key(ctx, length, key);
+}
+
+static void
+openssl_cast_encrypt(void *ctx, unsigned length,
+                    uint8_t *dst, const uint8_t *src)
+{
+  assert (!(length % CAST_BLOCK));
+  while (length)
+    {
+      CAST_ecb_encrypt(src, dst, ctx, CAST_ENCRYPT);
+      length -= CAST_BLOCK;
+      dst += CAST_BLOCK;
+      src += CAST_BLOCK;
+    }
+}
+
+static void
+openssl_cast_decrypt(void *ctx, unsigned length,
+                    uint8_t *dst, const uint8_t *src)
+{
+  assert (!(length % CAST_BLOCK));
+  while (length)
+    {
+      CAST_ecb_encrypt(src, dst, ctx, CAST_DECRYPT);
+      length -= CAST_BLOCK;
+      dst += CAST_BLOCK;
+      src += CAST_BLOCK;
+    }
+}
+
+const struct nettle_cipher
+nettle_openssl_cast128 = {
+  "openssl cast128", sizeof(CAST_KEY),
+  /* Claim no block size, so that the benchmark doesn't try CBC mode
+   * (as openssl cipher + nettle cbc is somewhat pointless to
+   * benchmark). */
+  0, CAST_KEY_LENGTH,
+  openssl_cast_set_key, openssl_cast_set_key,
+  openssl_cast_encrypt, openssl_cast_decrypt
+};
+
+#endif /* HAVE_LIBCRYPTO */