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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
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')
-rw-r--r--src/crypto/CMakeLists.txt3
-rw-r--r--src/crypto/cipher/CMakeLists.txt34
-rw-r--r--src/crypto/cipher/aes128_ctr/CMakeLists.txt18
-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
-rw-r--r--src/crypto/cipher/ciphers.c.in103
6 files changed, 240 insertions, 0 deletions
diff --git a/src/crypto/CMakeLists.txt b/src/crypto/CMakeLists.txt
new file mode 100644
index 0000000..1c78e03
--- /dev/null
+++ b/src/crypto/CMakeLists.txt
@@ -0,0 +1,3 @@
+add_subdirectory(cipher)
+
+set(CRYPTO_SOURCES "${CIPHER_SOURCES}" PARENT_SCOPE)
diff --git a/src/crypto/cipher/CMakeLists.txt b/src/crypto/cipher/CMakeLists.txt
new file mode 100644
index 0000000..00b8560
--- /dev/null
+++ b/src/crypto/cipher/CMakeLists.txt
@@ -0,0 +1,34 @@
+set(CIPHERS "")
+
+if(WITH_CIPHER_AES128_CTR)
+ list(APPEND CIPHERS aes128_ctr)
+endif(WITH_CIPHER_AES128_CTR)
+
+set(CIPHER_SOURCES "${CMAKE_CURRENT_BINARY_DIR}/ciphers.c")
+
+set(CIPHER_DEFINITIONS "")
+set(CIPHER_IMPLS "")
+set(CIPHER_LIST "")
+
+foreach(cipher ${CIPHERS})
+ add_subdirectory(${cipher})
+
+ list(APPEND CIPHER_SOURCES ${IMPL_SOURCES})
+
+ set(CIPHER_LIST "${CIPHER_LIST}\n{\"${CIPHER_NAME}\", cipher_${cipher}_impls},")
+ set(CIPHER_IMPLS "${CIPHER_IMPLS}\nstatic const fastd_cipher_t *const cipher_${cipher}_impls[] = {")
+
+ foreach(impl ${IMPLS})
+ set(CIPHER_DEFINITIONS "${CIPHER_DEFINITIONS}\nextern const fastd_cipher_t fastd_cipher_${cipher}_${impl};")
+ set(CIPHER_IMPLS "${CIPHER_IMPLS}&fastd_cipher_${cipher}_${impl}, ")
+ endforeach(impl)
+
+ set(CIPHER_IMPLS "${CIPHER_IMPLS}NULL};")
+
+endforeach(cipher)
+
+
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/ciphers.c.in ${CMAKE_CURRENT_BINARY_DIR}/ciphers.c)
+
+
+set(CIPHER_SOURCES "${CIPHER_SOURCES}" PARENT_SCOPE)
diff --git a/src/crypto/cipher/aes128_ctr/CMakeLists.txt b/src/crypto/cipher/aes128_ctr/CMakeLists.txt
new file mode 100644
index 0000000..6237a7c
--- /dev/null
+++ b/src/crypto/cipher/aes128_ctr/CMakeLists.txt
@@ -0,0 +1,18 @@
+set(IMPLS "")
+
+if(WITH_CIPHER_AES128_CTR_NACL)
+ list(APPEND IMPLS nacl)
+endif(WITH_CIPHER_AES128_CTR_NACL)
+
+set(IMPL_SOURCES "")
+
+foreach(impl ${IMPLS})
+ add_subdirectory(${impl})
+
+ list(APPEND IMPL_SOURCES $<TARGET_OBJECTS:cipher_aes128_ctr_${impl}>)
+endforeach(impl)
+
+
+set(CIPHER_NAME "aes128-ctr" PARENT_SCOPE)
+set(IMPLS "${IMPLS}" PARENT_SCOPE)
+set(IMPL_SOURCES "${IMPL_SOURCES}" PARENT_SCOPE)
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,
+};
diff --git a/src/crypto/cipher/ciphers.c.in b/src/crypto/cipher/ciphers.c.in
new file mode 100644
index 0000000..ee710f8
--- /dev/null
+++ b/src/crypto/cipher/ciphers.c.in
@@ -0,0 +1,103 @@
+/*
+ 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>
+
+
+@CIPHER_DEFINITIONS@
+
+typedef struct cipher_impl_list {
+ const char *name;
+ const fastd_cipher_t *const *impls;
+} cipher_impl_list_t;
+
+@CIPHER_IMPLS@
+
+static const cipher_impl_list_t ciphers[] = { @CIPHER_LIST@
+};
+
+
+const fastd_cipher_t** fastd_cipher_config_alloc(void) {
+ const fastd_cipher_t **cipher_conf = calloc(array_size(ciphers), sizeof(const fastd_cipher_t*));
+
+ size_t i;
+ for (i = 0; i < array_size(ciphers); i++)
+ cipher_conf[i] = ciphers[i].impls[0];
+
+ return cipher_conf;
+}
+
+void fastd_cipher_config_free(const fastd_cipher_t **cipher_conf) {
+ free(cipher_conf);
+}
+
+bool fastd_cipher_config(const fastd_cipher_t **cipher_conf, const char *name, const char *impl) {
+ size_t i;
+ for (i = 0; i < array_size(ciphers); i++) {
+ if (!strcmp(ciphers[i].name, name)) {
+ size_t j;
+ for (j = 0; ciphers[i].impls[j]; j++) {
+ if (!strcmp(ciphers[i].impls[j]->name, impl)) {
+ cipher_conf[i] = ciphers[i].impls[j];
+ return true;
+ }
+ }
+
+ return false;
+ }
+ }
+
+ return false;
+}
+
+void fastd_cipher_init(fastd_context_t *ctx) {
+ ctx->cipher_contexts = calloc(array_size(ciphers), sizeof(fastd_cipher_context_t*));
+
+ size_t i;
+ for (i = 0; i < array_size(ciphers); i++)
+ ctx->cipher_contexts[i] = ctx->conf->ciphers[i]->initialize(ctx);
+}
+
+void fastd_cipher_free(fastd_context_t *ctx) {
+ size_t i;
+ for (i = 0; i < array_size(ciphers); i++)
+ ctx->conf->ciphers[i]->free(ctx, ctx->cipher_contexts[i]);
+
+ free(ctx->cipher_contexts);
+}
+
+bool fastd_cipher_get_by_name(fastd_context_t *ctx, const char *name, const fastd_cipher_t **cipher, fastd_cipher_context_t **cctx) {
+ size_t i;
+ for (i = 0; i < array_size(ciphers); i++) {
+ if (!strcmp(ciphers[i].name, name)) {
+ *cipher = ctx->conf->ciphers[i];
+ *cctx = ctx->cipher_contexts[i];
+ return true;
+ }
+ }
+
+ return false;
+}