From dc2227ac29e5fe56c445dd4499dadd1af0441750 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Niels=20M=C3=B6ller?= <nisse@lysator.liu.se>
Date: Tue, 25 Jun 2013 22:19:36 +0200
Subject: [PATCH] New interface for AES-192.
---
ChangeLog | 2 ++
Makefile.in | 2 ++
aes-decrypt.c | 10 +++++++
aes-encrypt.c | 10 +++++++
aes-meta.c | 3 ---
aes.h | 28 +++++++++++++++++++-
aes192-meta.c | 57 ++++++++++++++++++++++++++++++++++++++++
aes192-set-decrypt-key.c | 46 ++++++++++++++++++++++++++++++++
aes192-set-encrypt-key.c | 38 +++++++++++++++++++++++++++
nettle-internal.c | 2 ++
nettle-internal.h | 1 +
testsuite/aes-test.c | 34 +++++++++++-------------
12 files changed, 211 insertions(+), 22 deletions(-)
create mode 100644 aes192-meta.c
create mode 100644 aes192-set-decrypt-key.c
create mode 100644 aes192-set-encrypt-key.c
diff --git a/ChangeLog b/ChangeLog
index 1306b308..31a3dd4f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -16,6 +16,8 @@
* testsuite/aes-test.c (test_cipher2): New function.
(test_main): Test both nettle_aes128 and nettle_unified_aes128.
+ Analogous changes för aes192.
+
2013-05-22 Niels Möller <nisse@lysator.liu.se>
* Makefile.in (nettle_SOURCES): Added aes-invert-internal.c and
diff --git a/Makefile.in b/Makefile.in
index 99eb564f..e803c328 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -67,6 +67,8 @@ nettle_SOURCES = aes-decrypt-internal.c aes-decrypt.c \
aes-set-encrypt-key.c aes-set-decrypt-key.c aes-meta.c \
aes128-set-encrypt-key.c aes128-set-decrypt-key.c \
aes128-meta.c \
+ aes192-set-encrypt-key.c aes192-set-decrypt-key.c \
+ aes192-meta.c \
arcfour.c arcfour-crypt.c arcfour-meta.c \
arctwo.c arctwo-meta.c gosthash94-meta.c \
base16-encode.c base16-decode.c base16-meta.c \
diff --git a/aes-decrypt.c b/aes-decrypt.c
index e8696bf5..9ea0e238 100644
--- a/aes-decrypt.c
+++ b/aes-decrypt.c
@@ -355,3 +355,13 @@ aes128_decrypt(const struct aes128_ctx *ctx,
_aes_decrypt(_AES128_ROUNDS, ctx->keys, &_aes_decrypt_table,
length, dst, src);
}
+
+void
+aes192_decrypt(const struct aes192_ctx *ctx,
+ size_t length, uint8_t *dst,
+ const uint8_t *src)
+{
+ assert(!(length % AES_BLOCK_SIZE) );
+ _aes_decrypt(_AES192_ROUNDS, ctx->keys, &_aes_decrypt_table,
+ length, dst, src);
+}
diff --git a/aes-encrypt.c b/aes-encrypt.c
index 643276af..c4e3713e 100644
--- a/aes-encrypt.c
+++ b/aes-encrypt.c
@@ -53,3 +53,13 @@ aes128_encrypt(const struct aes128_ctx *ctx,
_aes_encrypt(_AES128_ROUNDS, ctx->keys, &_aes_encrypt_table,
length, dst, src);
}
+
+void
+aes192_encrypt(const struct aes192_ctx *ctx,
+ size_t length, uint8_t *dst,
+ const uint8_t *src)
+{
+ assert(!(length % AES_BLOCK_SIZE) );
+ _aes_encrypt(_AES192_ROUNDS, ctx->keys, &_aes_encrypt_table,
+ length, dst, src);
+}
diff --git a/aes-meta.c b/aes-meta.c
index 3db85f67..6bce5a42 100644
--- a/aes-meta.c
+++ b/aes-meta.c
@@ -28,8 +28,5 @@
#include "aes.h"
-const struct nettle_cipher nettle_aes192
-= _NETTLE_CIPHER_SEP(aes, AES, 192);
-
const struct nettle_cipher nettle_aes256
= _NETTLE_CIPHER_SEP(aes, AES, 256);
diff --git a/aes.h b/aes.h
index 74b3fd67..ca9976e5 100644
--- a/aes.h
+++ b/aes.h
@@ -5,7 +5,7 @@
/* nettle, low-level cryptographics library
*
- * Copyright (C) 2001 Niels Möller
+ * Copyright (C) 2001, 2013 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
@@ -43,6 +43,11 @@ extern "C" {
#define aes128_invert_key nettle_aes128invert_key
#define aes128_encrypt nettle_aes128encrypt
#define aes128_decrypt nettle_aes128decrypt
+#define aes192_set_encrypt_key nettle_aes192set_encrypt_key
+#define aes192_set_decrypt_key nettle_aes192set_decrypt_key
+#define aes192_invert_key nettle_aes192invert_key
+#define aes192_encrypt nettle_aes192encrypt
+#define aes192_decrypt nettle_aes192decrypt
#define AES_BLOCK_SIZE 16
@@ -110,6 +115,27 @@ aes128_decrypt(const struct aes128_ctx *ctx,
size_t length, uint8_t *dst,
const uint8_t *src);
+struct aes192_ctx
+{
+ uint32_t keys[4 * (_AES192_ROUNDS + 1)];
+};
+
+void
+aes192_set_encrypt_key(struct aes192_ctx *ctx, const uint8_t *key);
+void
+aes192_set_decrypt_key(struct aes192_ctx *ctx, const uint8_t *key);
+void
+aes192_invert_key(struct aes192_ctx *dst,
+ const struct aes192_ctx *src);
+void
+aes192_encrypt(const struct aes192_ctx *ctx,
+ size_t length, uint8_t *dst,
+ const uint8_t *src);
+void
+aes192_decrypt(const struct aes192_ctx *ctx,
+ size_t length, uint8_t *dst,
+ const uint8_t *src);
+
#ifdef __cplusplus
}
#endif
diff --git a/aes192-meta.c b/aes192-meta.c
new file mode 100644
index 00000000..0ee0c1aa
--- /dev/null
+++ b/aes192-meta.c
@@ -0,0 +1,57 @@
+/* aes192-meta.c */
+
+/* nettle, low-level cryptographics library
+ *
+ * Copyright (C) 2013 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., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02111-1301, USA.
+ */
+
+#if HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <assert.h>
+
+#include "nettle-meta.h"
+
+#include "aes.h"
+
+static nettle_set_key_func aes192_set_encrypt_key_wrapper;
+static nettle_set_key_func aes192_set_decrypt_key_wrapper;
+
+static void
+aes192_set_encrypt_key_wrapper (void *ctx, size_t length, const uint8_t *key)
+{
+ assert (length == AES192_KEY_SIZE);
+ aes192_set_encrypt_key (ctx, key);
+}
+
+static void
+aes192_set_decrypt_key_wrapper (void *ctx, size_t length, const uint8_t *key)
+{
+ assert (length == AES192_KEY_SIZE);
+ aes192_set_decrypt_key (ctx, key);
+}
+
+const struct nettle_cipher nettle_aes192 =
+ { "aes192", sizeof(struct aes192_ctx),
+ AES_BLOCK_SIZE, AES192_KEY_SIZE,
+ aes192_set_encrypt_key_wrapper,
+ aes192_set_decrypt_key_wrapper,
+ (nettle_crypt_func *) aes192_encrypt,
+ (nettle_crypt_func *) aes192_decrypt
+ };
diff --git a/aes192-set-decrypt-key.c b/aes192-set-decrypt-key.c
new file mode 100644
index 00000000..496bee69
--- /dev/null
+++ b/aes192-set-decrypt-key.c
@@ -0,0 +1,46 @@
+/* aes192-set-decrypt-key.c
+ *
+ * Key setup for the aes/rijndael block cipher.
+ */
+
+/* nettle, low-level cryptographics library
+ *
+ * Copyright (C) 2013, 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., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02111-1301, USA.
+ */
+
+#if HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <assert.h>
+
+#include "aes-internal.h"
+#include "macros.h"
+
+void
+aes192_invert_key (struct aes192_ctx *dst, const struct aes192_ctx *src)
+{
+ _aes_invert (_AES192_ROUNDS, dst->keys, src->keys);
+}
+
+void
+aes192_set_decrypt_key(struct aes192_ctx *ctx, const uint8_t *key)
+{
+ aes192_set_encrypt_key (ctx, key);
+ aes192_invert_key (ctx, ctx);
+}
diff --git a/aes192-set-encrypt-key.c b/aes192-set-encrypt-key.c
new file mode 100644
index 00000000..53bf3678
--- /dev/null
+++ b/aes192-set-encrypt-key.c
@@ -0,0 +1,38 @@
+/* aes192-set-encrypt-key.c
+ *
+ * Key setup for the aes/rijndael block cipher.
+ */
+
+/* nettle, low-level cryptographics library
+ *
+ * Copyright (C) 2013, 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., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02111-1301, USA.
+ */
+
+#if HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <assert.h>
+
+#include "aes-internal.h"
+
+void
+aes192_set_encrypt_key(struct aes192_ctx *ctx, const uint8_t *key)
+{
+ _aes_set_key (_AES192_ROUNDS, AES192_KEY_SIZE / 4, ctx->keys, key);
+}
diff --git a/nettle-internal.c b/nettle-internal.c
index e5a7271d..e258eb44 100644
--- a/nettle-internal.c
+++ b/nettle-internal.c
@@ -117,3 +117,5 @@ nettle_gcm_aes256 = _NETTLE_AEAD(gcm, GCM, aes, 256);
const struct nettle_cipher nettle_unified_aes128
= _NETTLE_CIPHER_SEP(aes, AES, 128);
+const struct nettle_cipher nettle_unified_aes192
+= _NETTLE_CIPHER_SEP(aes, AES, 192);
diff --git a/nettle-internal.h b/nettle-internal.h
index ec26fe3c..651ff4c0 100644
--- a/nettle-internal.h
+++ b/nettle-internal.h
@@ -65,6 +65,7 @@ extern const struct nettle_cipher nettle_salsa20;
extern const struct nettle_cipher nettle_salsa20r12;
extern const struct nettle_cipher nettle_unified_aes128;
+extern const struct nettle_cipher nettle_unified_aes192;
/* Glue to openssl, for comparative benchmarking. Code in
* examples/nettle-openssl.c. */
diff --git a/testsuite/aes-test.c b/testsuite/aes-test.c
index 1304e8b0..14e20e4e 100644
--- a/testsuite/aes-test.c
+++ b/testsuite/aes-test.c
@@ -84,15 +84,13 @@ test_main(void)
SHEX("CE52AF650D088CA5 59425223F4D32694"));
/* 192 bit keys */
-
- test_cipher(&nettle_aes192,
- SHEX("0001020305060708 0A0B0C0D0F101112"
- "14151617191A1B1C"),
- SHEX("2D33EEF2C0430A8A 9EBF45E809C40BB6"),
- SHEX("DFF4945E0336DF4C 1C56BC700EFF837F"));
+ test_cipher2(&nettle_aes192, &nettle_unified_aes192,
+ SHEX("0001020305060708 0A0B0C0D0F101112"
+ "14151617191A1B1C"),
+ SHEX("2D33EEF2C0430A8A 9EBF45E809C40BB6"),
+ SHEX("DFF4945E0336DF4C 1C56BC700EFF837F"));
- /* 256 bit keys */
-
+ /* 256 bit keys */
test_cipher(&nettle_aes256,
SHEX("0001020305060708 0A0B0C0D0F101112"
"14151617191A1B1C 1E1F202123242526"),
@@ -131,16 +129,16 @@ test_main(void)
/* F.1.3 ECB-AES192-Encrypt */
- test_cipher(&nettle_aes192,
- SHEX("8e73b0f7da0e6452c810f32b809079e5 62f8ead2522c6b7b"),
- SHEX("6bc1bee22e409f96e93d7e117393172a"
- "ae2d8a571e03ac9c9eb76fac45af8e51"
- "30c81c46a35ce411e5fbc1191a0a52ef"
- "f69f2445df4f9b17ad2b417be66c3710"),
- SHEX("bd334f1d6e45f25ff712a214571fa5cc"
- "974104846d0ad3ad7734ecb3ecee4eef"
- "ef7afd2270e2e60adce0ba2face6444e"
- "9a4b41ba738d6c72fb16691603c18e0e"));
+ test_cipher2(&nettle_aes192, &nettle_unified_aes192,
+ SHEX("8e73b0f7da0e6452c810f32b809079e5 62f8ead2522c6b7b"),
+ SHEX("6bc1bee22e409f96e93d7e117393172a"
+ "ae2d8a571e03ac9c9eb76fac45af8e51"
+ "30c81c46a35ce411e5fbc1191a0a52ef"
+ "f69f2445df4f9b17ad2b417be66c3710"),
+ SHEX("bd334f1d6e45f25ff712a214571fa5cc"
+ "974104846d0ad3ad7734ecb3ecee4eef"
+ "ef7afd2270e2e60adce0ba2face6444e"
+ "9a4b41ba738d6c72fb16691603c18e0e"));
/* F.1.5 ECB-AES256-Encrypt */
test_cipher(&nettle_aes256,
--
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