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authorMatthias Schiffer <mschiffer@universe-factory.net>2013-11-02 04:32:18 +0100
committerMatthias Schiffer <mschiffer@universe-factory.net>2013-11-02 04:32:18 +0100
commit20ee3b5a4f110f53a73746e18fc0eb0cbbb7845c (patch)
treebbf62cb65ba716e7cefcfc41904bb3460c3ddb58 /src/crypto/cipher/aes128_ctr/nacl
parentde66ca829d22f939900635968d1b3fd7a7d598da (diff)
downloadfastd-20ee3b5a4f110f53a73746e18fc0eb0cbbb7845c.tar
fastd-20ee3b5a4f110f53a73746e18fc0eb0cbbb7845c.zip
Implement the first step towards a more flexible way to support crypto methods
Diffstat (limited to 'src/crypto/cipher/aes128_ctr/nacl')
-rw-r--r--src/crypto/cipher/aes128_ctr/nacl/CMakeLists.txt6
-rw-r--r--src/crypto/cipher/aes128_ctr/nacl/cipher_aes128_ctr_nacl.c76
2 files changed, 82 insertions, 0 deletions
diff --git a/src/crypto/cipher/aes128_ctr/nacl/CMakeLists.txt b/src/crypto/cipher/aes128_ctr/nacl/CMakeLists.txt
new file mode 100644
index 0000000..50e4b4c
--- /dev/null
+++ b/src/crypto/cipher/aes128_ctr/nacl/CMakeLists.txt
@@ -0,0 +1,6 @@
+include_directories(${FASTD_SOURCE_DIR}/src ${FASTD_BINARY_DIR} ${NACL_INCLUDE_DIRS})
+
+add_library(cipher_aes128_ctr_nacl OBJECT
+ cipher_aes128_ctr_nacl.c
+)
+set_property(TARGET method_xsalsa20_poly1305 PROPERTY COMPILE_FLAGS "${FASTD_CFLAGS}")
diff --git a/src/crypto/cipher/aes128_ctr/nacl/cipher_aes128_ctr_nacl.c b/src/crypto/cipher/aes128_ctr/nacl/cipher_aes128_ctr_nacl.c
new file mode 100644
index 0000000..f63e46f
--- /dev/null
+++ b/src/crypto/cipher/aes128_ctr/nacl/cipher_aes128_ctr_nacl.c
@@ -0,0 +1,76 @@
+/*
+ Copyright (c) 2012-2013, Matthias Schiffer <mschiffer@universe-factory.net>
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+ 1. Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation
+ and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+
+#include "../../../../fastd.h"
+#include <crypto_stream_aes128ctr.h>
+
+
+struct fastd_cipher_state {
+ fastd_buffer_t d;
+};
+
+
+static fastd_cipher_context_t* aes128_ctr_initialize(fastd_context_t *ctx UNUSED) {
+ return NULL;
+}
+
+static fastd_cipher_state_t* aes128_ctr_init_state(fastd_context_t *ctx, const fastd_cipher_context_t *cctx UNUSED, const uint8_t *key) {
+ fastd_block128_t k;
+ memcpy(k.b, key, sizeof(fastd_block128_t));
+
+ fastd_cipher_state_t *state = malloc(sizeof(fastd_cipher_state_t));
+
+ state->d = fastd_buffer_alloc(ctx, crypto_stream_aes128ctr_BEFORENMBYTES, 0, 0);
+ crypto_stream_aes128ctr_beforenm(state->d.data, k.b);
+
+ return state;
+}
+
+static bool aes128_ctr_crypt(fastd_context_t *ctx UNUSED, const fastd_cipher_state_t *state, fastd_block128_t *out, const fastd_block128_t *in, size_t len, const fastd_block128_t *iv) {
+ crypto_stream_aes128ctr_xor_afternm(out->b, in->b, len, iv->b, state->d.data);
+ return true;
+}
+
+static void aes128_ctr_free_state(fastd_context_t *ctx UNUSED, fastd_cipher_state_t *state) {
+ if (state) {
+ fastd_buffer_free(state->d);
+ free(state);
+ }
+}
+
+static void aes128_ctr_free(fastd_context_t *ctx UNUSED, fastd_cipher_context_t *cctx UNUSED) {
+}
+
+const fastd_cipher_t fastd_cipher_aes128_ctr_nacl = {
+ .name = "nacl",
+
+ .initialize = aes128_ctr_initialize,
+ .init_state = aes128_ctr_init_state,
+ .crypt = aes128_ctr_crypt,
+
+ .free_state = aes128_ctr_free_state,
+ .free = aes128_ctr_free,
+};