summaryrefslogtreecommitdiffstats
path: root/src/crypto
diff options
context:
space:
mode:
authorMatthias Schiffer <mschiffer@universe-factory.net>2013-11-27 20:28:16 +0100
committerMatthias Schiffer <mschiffer@universe-factory.net>2013-11-27 20:28:16 +0100
commitba5abca808dc85e2de2e11351832329f1566bc7e (patch)
tree6f5d83fa8abccd17b389b38251e835c11fb968f0 /src/crypto
parent2f516f9ceaaf5b964de953aae82498818db9091b (diff)
downloadfastd-ba5abca808dc85e2de2e11351832329f1566bc7e.tar
fastd-ba5abca808dc85e2de2e11351832329f1566bc7e.zip
Add OpenSSL-based aes128-ctr implementation
Diffstat (limited to 'src/crypto')
-rw-r--r--src/crypto/cipher/aes128_ctr/CMakeLists.txt1
-rw-r--r--src/crypto/cipher/aes128_ctr/openssl/CMakeLists.txt6
-rw-r--r--src/crypto/cipher/aes128_ctr/openssl/aes128_ctr_openssl.c85
3 files changed, 92 insertions, 0 deletions
diff --git a/src/crypto/cipher/aes128_ctr/CMakeLists.txt b/src/crypto/cipher/aes128_ctr/CMakeLists.txt
index 27b507b..0588fed 100644
--- a/src/crypto/cipher/aes128_ctr/CMakeLists.txt
+++ b/src/crypto/cipher/aes128_ctr/CMakeLists.txt
@@ -1,2 +1,3 @@
fastd_cipher(aes128-ctr aes128_ctr.c)
+add_subdirectory(openssl)
add_subdirectory(nacl)
diff --git a/src/crypto/cipher/aes128_ctr/openssl/CMakeLists.txt b/src/crypto/cipher/aes128_ctr/openssl/CMakeLists.txt
new file mode 100644
index 0000000..5454b3f
--- /dev/null
+++ b/src/crypto/cipher/aes128_ctr/openssl/CMakeLists.txt
@@ -0,0 +1,6 @@
+if(USE_OPENSSL)
+ fastd_cipher_impl(aes128-ctr openssl
+ aes128_ctr_openssl.c
+ )
+ fastd_cipher_impl_include_directories(aes128-ctr openssl ${OPENSSL_INCLUDE_DIRS})
+endif(USE_OPENSSL)
diff --git a/src/crypto/cipher/aes128_ctr/openssl/aes128_ctr_openssl.c b/src/crypto/cipher/aes128_ctr/openssl/aes128_ctr_openssl.c
new file mode 100644
index 0000000..3ab12d5
--- /dev/null
+++ b/src/crypto/cipher/aes128_ctr/openssl/aes128_ctr_openssl.c
@@ -0,0 +1,85 @@
+/*
+ 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 "../../../../crypto.h"
+#include <openssl/evp.h>
+
+
+struct __attribute__((aligned(16))) fastd_cipher_state {
+ EVP_CIPHER_CTX *aes;
+};
+
+
+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 UNUSED, const fastd_cipher_context_t *cctx UNUSED, const uint8_t *key) {
+ fastd_cipher_state_t *state = malloc(sizeof(fastd_cipher_state_t));
+
+ state->aes = EVP_CIPHER_CTX_new();
+ EVP_EncryptInit(state->aes, EVP_aes_128_ctr(), (const void*)key, NULL);
+
+ 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 uint8_t *iv) {
+ int clen, clen2;
+
+ if (!EVP_EncryptInit(state->aes, NULL, NULL, iv))
+ return false;
+
+ if (!EVP_EncryptUpdate(state->aes, (void*)out, &clen, (const void*)in, len))
+ return false;
+
+ if (!EVP_EncryptFinal(state->aes, ((void*)out) + clen, &clen2))
+ return false;
+
+ if ((size_t)(clen+clen2) != len)
+ return false;
+
+ return true;
+}
+
+static void aes128_ctr_free_state(fastd_context_t *ctx UNUSED, fastd_cipher_state_t *state) {
+ if (state) {
+ EVP_CIPHER_CTX_free(state->aes);
+ 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_openssl = {
+ .initialize = aes128_ctr_initialize,
+ .init_state = aes128_ctr_init_state,
+
+ .crypt = aes128_ctr_crypt,
+
+ .free_state = aes128_ctr_free_state,
+ .free = aes128_ctr_free,
+};