Benchmarking of chacha.

diff --git a/ChangeLog b/ChangeLog
index cee70a0a3772ae9078699012b0459f12dc2fc0e6..6c675955386bc8956f31177ea8d4b3aabcb05b3d 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2014-01-27  Niels Möller  <nisse@lysator.liu.se>
 
+       * examples/nettle-benchmark.c (main): Add benchmarking of chacha.
+       * nettle-internal.c (nettle_chacha): New const struct, for the
+       benchmark.
+
        Chacha implementation, based on contribution by Joachim
        Strömbergson.
        * chacha.h: New file.

diff --git a/examples/nettle-benchmark.c b/examples/nettle-benchmark.c
index 6de7dbcf70b8cd45914bf035b05392466e240b4c..9bb19e4af430fcdd648c96e414943ac3cb3c8629 100644 (file)
--- a/examples/nettle-benchmark.c
+++ b/examples/nettle-benchmark.c
@@ -680,7 +680,7 @@ main(int argc, char **argv)
       &nettle_des3,
       &nettle_serpent256,
       &nettle_twofish128, &nettle_twofish192, &nettle_twofish256,
-      &nettle_salsa20, &nettle_salsa20r12,
+      &nettle_salsa20, &nettle_salsa20r12, &nettle_chacha,
       NULL
     };
 

diff --git a/nettle-internal.c b/nettle-internal.c
index 40f2dd453c026460fcf0e9fefac92fb692ca5a33..bdc9ef82c79aeadc66db5cc2054049a2361e502a 100644 (file)
--- a/nettle-internal.c
+++ b/nettle-internal.c
@@ -36,6 +36,7 @@
 #include "des.h"
 #include "eax.h"
 #include "gcm.h"
+#include "chacha.h"
 #include "salsa20.h"
 
 /* DES uses a different signature for the key set function. We ignore
@@ -79,6 +80,25 @@ nettle_des3 = {
 const struct nettle_cipher
 nettle_blowfish128 = _NETTLE_CIPHER(blowfish, BLOWFISH, 128);
 
+/* Sets a fix zero iv. For benchmarking only. */
+static void
+chacha_set_key_hack(void *ctx, size_t length, const uint8_t *key)
+{
+  static const uint8_t iv[CHACHA_IV_SIZE];
+  chacha_set_key (ctx, length, key);
+  chacha_set_iv (ctx, iv);
+}
+
+/* Claim zero block size, to classify as a stream cipher. */
+const struct nettle_cipher
+nettle_chacha = {
+  "chacha", sizeof(struct chacha_ctx),
+  0, CHACHA_KEY_SIZE,
+  chacha_set_key_hack, chacha_set_key_hack,
+  (nettle_crypt_func *) chacha_crypt,
+  (nettle_crypt_func *) chacha_crypt
+};
+
 /* Sets a fix zero iv. For benchmarking only. */
 static void
 salsa20_set_key_hack(void *ctx, size_t length, const uint8_t *key)

diff --git a/nettle-internal.h b/nettle-internal.h
index b5a168e579c0ebbbdcf957e2a13578cb2d54dda9..3528b24462d0f9e01f66777ebf93874c901d8a1a 100644 (file)
--- a/nettle-internal.h
+++ b/nettle-internal.h
@@ -61,6 +61,7 @@ extern const struct nettle_cipher nettle_des3;
 extern const struct nettle_cipher nettle_blowfish128;
 
 /* For benchmarking only, sets no iv and lies about the block size. */
+extern const struct nettle_cipher nettle_chacha;
 extern const struct nettle_cipher nettle_salsa20;
 extern const struct nettle_cipher nettle_salsa20r12;