diff options
Diffstat (limited to 'src')
31 files changed, 508 insertions, 217 deletions
diff --git a/src/crypto.h b/src/crypto.h index e7d011b..a11b460 100644 --- a/src/crypto.h +++ b/src/crypto.h @@ -30,11 +30,12 @@ #include "fastd.h" -struct fastd_cipher { - const char *name; +struct fastd_cipher_info { size_t key_length; size_t iv_length; +}; +struct fastd_cipher { fastd_cipher_context_t* (*initialize)(fastd_context_t *ctx); fastd_cipher_state_t* (*init_state)(fastd_context_t *ctx, const fastd_cipher_context_t *cctx, const uint8_t *key); @@ -44,10 +45,12 @@ struct fastd_cipher { void (*free)(fastd_context_t *ctx, fastd_cipher_context_t *cctx); }; -struct fastd_mac { - const char *name; + +struct fastd_mac_info { size_t key_length; +}; +struct fastd_mac { fastd_mac_context_t* (*initialize)(fastd_context_t *ctx); fastd_mac_state_t* (*init_state)(fastd_context_t *ctx, const fastd_mac_context_t *mctx, const uint8_t *key); @@ -57,4 +60,15 @@ struct fastd_mac { void (*free)(fastd_context_t *ctx, fastd_mac_context_t *mctx); }; + +void fastd_cipher_init(fastd_context_t *ctx); +void fastd_cipher_free(fastd_context_t *ctx); +const fastd_cipher_info_t* fastd_cipher_info_get_by_name(const char *name); +const fastd_cipher_t* fastd_cipher_get_by_name(fastd_context_t *ctx, const char *name, const fastd_cipher_info_t **info, const fastd_cipher_context_t **cctx); + +void fastd_mac_init(fastd_context_t *ctx); +void fastd_mac_free(fastd_context_t *ctx); +const fastd_mac_info_t* fastd_mac_info_get_by_name(const char *name); +const fastd_mac_t* fastd_mac_get_by_name(fastd_context_t *ctx, const char *name, const fastd_mac_info_t **info, const fastd_mac_context_t **cctx); + #endif /* _FASTD_CRYPTO_H_ */ diff --git a/src/crypto/cipher/CMakeLists.txt b/src/crypto/cipher/CMakeLists.txt index b538227..e32b697 100644 --- a/src/crypto/cipher/CMakeLists.txt +++ b/src/crypto/cipher/CMakeLists.txt @@ -1,26 +1,25 @@ add_library(ciphers STATIC "${CMAKE_CURRENT_BINARY_DIR}/ciphers.c") -function(fastd_cipher name) - string(REPLACE - _ name_ "${name}") - string(TOUPPER "${name_}" NAME) +macro(fastd_cipher name) + fastd_module(cipher enabled "cipher" ${name} ${ARGN}) - set(WITH_CIPHER_${NAME} TRUE CACHE BOOL "Include the ${name} cipher") - - if(WITH_CIPHER_${NAME}) + if(${enabled}) set_property(GLOBAL APPEND PROPERTY FASTD_CIPHERS ${name}) - endif(WITH_CIPHER_${NAME}) -endfunction(fastd_cipher) + endif(${enabled}) +endmacro(fastd_cipher) macro(fastd_cipher_impl cipher name) string(REPLACE - _ cipher_ "${cipher}") string(TOUPPER "${cipher_}" CIPHER) - fastd_module(cipher enabled "cipher implementation" "${cipher} ${name}" ${ARGN}) + if(WITH_CIPHER_${CIPHER}) + fastd_module(cipher enabled "cipher implementation" "${cipher} ${name}" ${ARGN}) - if(${enabled}) - set_property(GLOBAL APPEND PROPERTY FASTD_CIPHER_${CIPHER}_IMPLS ${name}) - endif(${enabled}) + if(${enabled}) + set_property(TARGET "cipher_${cipher_}" APPEND PROPERTY FASTD_CIPHER_IMPLS ${name}) + endif(${enabled}) + endif(WITH_CIPHER_${CIPHER}) endmacro(fastd_cipher_impl) macro(fastd_cipher_impl_include_directories cipher name) @@ -52,16 +51,18 @@ foreach(cipher ${CIPHERS}) string(REPLACE - _ cipher_ "${cipher}") string(TOUPPER "${cipher_}" CIPHER) - set(CIPHER_LIST "${CIPHER_LIST}\n{\"${cipher}\", cipher_${cipher_}_impls},") - set(CIPHER_IMPLS "${CIPHER_IMPLS}\nstatic const fastd_cipher_t *const cipher_${cipher_}_impls[] = {") + set(CIPHER_DEFINITIONS "${CIPHER_DEFINITIONS}\nextern const fastd_cipher_info_t fastd_cipher_info_${cipher_};") + set(CIPHER_LIST "${CIPHER_LIST}\n{\"${cipher}\", &fastd_cipher_info_${cipher_}, cipher_${cipher_}_impls},") + set(CIPHER_IMPLS "${CIPHER_IMPLS}\nstatic const fastd_cipher_impl_t cipher_${cipher_}_impls[] = {") + - get_property(IMPLS GLOBAL PROPERTY FASTD_CIPHER_${CIPHER}_IMPLS) + get_property(IMPLS TARGET "cipher_${cipher_}" PROPERTY FASTD_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_}_${impl}, ") + set(CIPHER_IMPLS "${CIPHER_IMPLS}{\"${impl}\", &fastd_cipher_${cipher_}_${impl}}, ") endforeach(impl) - set(CIPHER_IMPLS "${CIPHER_IMPLS}NULL};") + set(CIPHER_IMPLS "${CIPHER_IMPLS}{NULL, NULL}};") endforeach(cipher) get_property(LIBS TARGET ciphers PROPERTY FASTD_LINK_LIBRARIES) diff --git a/src/crypto/cipher/aes128_ctr/CMakeLists.txt b/src/crypto/cipher/aes128_ctr/CMakeLists.txt index 16eeeab..27b507b 100644 --- a/src/crypto/cipher/aes128_ctr/CMakeLists.txt +++ b/src/crypto/cipher/aes128_ctr/CMakeLists.txt @@ -1,2 +1,2 @@ -fastd_cipher(aes128-ctr) +fastd_cipher(aes128-ctr aes128_ctr.c) add_subdirectory(nacl) diff --git a/src/crypto/cipher/aes128_ctr/aes128_ctr.c b/src/crypto/cipher/aes128_ctr/aes128_ctr.c new file mode 100644 index 0000000..b228602 --- /dev/null +++ b/src/crypto/cipher/aes128_ctr/aes128_ctr.c @@ -0,0 +1,33 @@ +/* + 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" + + +const fastd_cipher_info_t fastd_cipher_info_aes128_ctr = { + .key_length = 16, + .iv_length = 16, +}; 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 index a520732..e5f6379 100644 --- a/src/crypto/cipher/aes128_ctr/nacl/cipher_aes128_ctr_nacl.c +++ b/src/crypto/cipher/aes128_ctr/nacl/cipher_aes128_ctr_nacl.c @@ -67,10 +67,6 @@ static void aes128_ctr_free(fastd_context_t *ctx UNUSED, fastd_cipher_context_t } const fastd_cipher_t fastd_cipher_aes128_ctr_nacl = { - .name = "nacl", - .key_length = 16, - .iv_length = 16, - .initialize = aes128_ctr_initialize, .init_state = aes128_ctr_init_state, diff --git a/src/crypto/cipher/blowfish_ctr/CMakeLists.txt b/src/crypto/cipher/blowfish_ctr/CMakeLists.txt index 56d283f..8cabb57 100644 --- a/src/crypto/cipher/blowfish_ctr/CMakeLists.txt +++ b/src/crypto/cipher/blowfish_ctr/CMakeLists.txt @@ -1,2 +1,2 @@ -fastd_cipher(blowfish-ctr) +fastd_cipher(blowfish-ctr blowfish_ctr.c) add_subdirectory(builtin) diff --git a/src/crypto/cipher/blowfish_ctr/blowfish_ctr.c b/src/crypto/cipher/blowfish_ctr/blowfish_ctr.c new file mode 100644 index 0000000..1e8010b --- /dev/null +++ b/src/crypto/cipher/blowfish_ctr/blowfish_ctr.c @@ -0,0 +1,33 @@ +/* + 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" + + +const fastd_cipher_info_t fastd_cipher_info_blowfish_ctr = { + .key_length = 56, + .iv_length = 8, +}; diff --git a/src/crypto/cipher/blowfish_ctr/builtin/blowfish_ctr.c b/src/crypto/cipher/blowfish_ctr/builtin/blowfish_ctr.c index 0ca8d2d..f3424b9 100644 --- a/src/crypto/cipher/blowfish_ctr/builtin/blowfish_ctr.c +++ b/src/crypto/cipher/blowfish_ctr/builtin/blowfish_ctr.c @@ -274,10 +274,6 @@ static void blowfish_ctr_free(fastd_context_t *ctx UNUSED, fastd_cipher_context_ } const fastd_cipher_t fastd_cipher_blowfish_ctr_builtin = { - .name = "builtin", - .key_length = 56, - .iv_length = 8, - .initialize = blowfish_ctr_initialize, .init_state = blowfish_ctr_init_state, diff --git a/src/crypto/cipher/ciphers.c.in b/src/crypto/cipher/ciphers.c.in index c912e60..508196e 100644 --- a/src/crypto/cipher/ciphers.c.in +++ b/src/crypto/cipher/ciphers.c.in @@ -30,14 +30,20 @@ @CIPHER_DEFINITIONS@ -typedef struct cipher_impl_list { +typedef struct fastd_cipher_impl { const char *name; - const fastd_cipher_t *const *impls; -} cipher_impl_list_t; + const fastd_cipher_t *impl; +} fastd_cipher_impl_t; + +typedef struct cipher_entry { + const char *name; + const fastd_cipher_info_t *info; + const fastd_cipher_impl_t *impls; +} cipher_entry_t; @CIPHER_IMPLS@ -static const cipher_impl_list_t ciphers[] = { @CIPHER_LIST@ +static const cipher_entry_t ciphers[] = { @CIPHER_LIST@ }; @@ -46,7 +52,7 @@ const fastd_cipher_t** fastd_cipher_config_alloc(void) { size_t i; for (i = 0; i < array_size(ciphers); i++) - cipher_conf[i] = ciphers[i].impls[0]; + cipher_conf[i] = ciphers[i].impls[0].impl; return cipher_conf; } @@ -60,9 +66,9 @@ bool fastd_cipher_config(const fastd_cipher_t **cipher_conf, const char *name, c 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]; + for (j = 0; ciphers[i].impls[j].impl; j++) { + if (!strcmp(ciphers[i].impls[j].name, impl)) { + cipher_conf[i] = ciphers[i].impls[j].impl; return true; } } @@ -92,20 +98,28 @@ void fastd_cipher_free(fastd_context_t *ctx) { free(ctx->cipher_contexts); } -bool fastd_cipher_available(const char *name) { +const fastd_cipher_info_t* fastd_cipher_info_get_by_name(const char *name) { size_t i; for (i = 0; i < array_size(ciphers); i++) { - if (!strcmp(ciphers[i].name, name)) - return ciphers[i].impls[0]; + if (strcmp(ciphers[i].name, name)) + continue; + + if (!ciphers[i].impls[0].impl) + continue; + + return ciphers[i].info; } - return false; + return NULL; } -const fastd_cipher_t* fastd_cipher_get_by_name(fastd_context_t *ctx, const char *name, const fastd_cipher_context_t **cctx) { +const fastd_cipher_t* fastd_cipher_get_by_name(fastd_context_t *ctx, const char *name, const fastd_cipher_info_t **info, const fastd_cipher_context_t **cctx) { size_t i; for (i = 0; i < array_size(ciphers); i++) { if (!strcmp(ciphers[i].name, name)) { + if (info) + *info = ciphers[i].info; + if (cctx) *cctx = ctx->cipher_contexts[i]; diff --git a/src/crypto/cipher/null/CMakeLists.txt b/src/crypto/cipher/null/CMakeLists.txt index e835d73..a05fdc5 100644 --- a/src/crypto/cipher/null/CMakeLists.txt +++ b/src/crypto/cipher/null/CMakeLists.txt @@ -1,2 +1,2 @@ -fastd_cipher(null) +fastd_cipher(null null.c) add_subdirectory(memcpy) diff --git a/src/crypto/cipher/null/memcpy/null_memcpy.c b/src/crypto/cipher/null/memcpy/null_memcpy.c index 45ad297..1784ac9 100644 --- a/src/crypto/cipher/null/memcpy/null_memcpy.c +++ b/src/crypto/cipher/null/memcpy/null_memcpy.c @@ -47,10 +47,6 @@ static void null_free(fastd_context_t *ctx UNUSED, fastd_cipher_context_t *cctx } const fastd_cipher_t fastd_cipher_null_memcpy = { - .name = "memcpy", - .key_length = 0, - .iv_length = 0, - .initialize = null_initialize, .init_state = null_init_state, diff --git a/src/crypto/cipher/null/null.c b/src/crypto/cipher/null/null.c new file mode 100644 index 0000000..07994f7 --- /dev/null +++ b/src/crypto/cipher/null/null.c @@ -0,0 +1,33 @@ +/* + 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" + + +const fastd_cipher_info_t fastd_cipher_info_null = { + .key_length = 0, + .iv_length = 0, +}; diff --git a/src/crypto/cipher/salsa20/CMakeLists.txt b/src/crypto/cipher/salsa20/CMakeLists.txt index 3d325dc..3d9654e 100644 --- a/src/crypto/cipher/salsa20/CMakeLists.txt +++ b/src/crypto/cipher/salsa20/CMakeLists.txt @@ -1,2 +1,2 @@ -fastd_cipher(salsa20) +fastd_cipher(salsa20 salsa20.c) add_subdirectory(nacl) diff --git a/src/crypto/cipher/salsa20/nacl/salsa20_nacl.c b/src/crypto/cipher/salsa20/nacl/salsa20_nacl.c index 93daad3..ddcc124 100644 --- a/src/crypto/cipher/salsa20/nacl/salsa20_nacl.c +++ b/src/crypto/cipher/salsa20/nacl/salsa20_nacl.c @@ -60,10 +60,6 @@ static void salsa20_free(fastd_context_t *ctx UNUSED, fastd_cipher_context_t *cc } const fastd_cipher_t fastd_cipher_salsa20_nacl = { - .name = "nacl", - .key_length = crypto_stream_salsa20_KEYBYTES, - .iv_length = crypto_stream_salsa20_NONCEBYTES, - .initialize = salsa20_initialize, .init_state = salsa20_init_state, diff --git a/src/crypto/cipher/salsa20/salsa20.c b/src/crypto/cipher/salsa20/salsa20.c new file mode 100644 index 0000000..bf6dc48 --- /dev/null +++ b/src/crypto/cipher/salsa20/salsa20.c @@ -0,0 +1,33 @@ +/* + 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" + + +const fastd_cipher_info_t fastd_cipher_info_salsa20 = { + .key_length = 32, + .iv_length = 8, +}; diff --git a/src/crypto/cipher/salsa2012/CMakeLists.txt b/src/crypto/cipher/salsa2012/CMakeLists.txt index 405ae9a..eb853e0 100644 --- a/src/crypto/cipher/salsa2012/CMakeLists.txt +++ b/src/crypto/cipher/salsa2012/CMakeLists.txt @@ -1,2 +1,2 @@ -fastd_cipher(salsa2012) +fastd_cipher(salsa2012 salsa2012.c) add_subdirectory(nacl) diff --git a/src/crypto/cipher/salsa2012/nacl/salsa2012_nacl.c b/src/crypto/cipher/salsa2012/nacl/salsa2012_nacl.c index 2703f0e..36985a6 100644 --- a/src/crypto/cipher/salsa2012/nacl/salsa2012_nacl.c +++ b/src/crypto/cipher/salsa2012/nacl/salsa2012_nacl.c @@ -60,10 +60,6 @@ static void salsa2012_free(fastd_context_t *ctx UNUSED, fastd_cipher_context_t * } const fastd_cipher_t fastd_cipher_salsa2012_nacl = { - .name = "nacl", - .key_length = crypto_stream_salsa2012_KEYBYTES, - .iv_length = crypto_stream_salsa2012_NONCEBYTES, - .initialize = salsa2012_initialize, .init_state = salsa2012_init_state, diff --git a/src/crypto/cipher/salsa2012/salsa2012.c b/src/crypto/cipher/salsa2012/salsa2012.c new file mode 100644 index 0000000..780702d --- /dev/null +++ b/src/crypto/cipher/salsa2012/salsa2012.c @@ -0,0 +1,33 @@ +/* + 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" + + +const fastd_cipher_info_t fastd_cipher_info_salsa2012 = { + .key_length = 32, + .iv_length = 8, +}; diff --git a/src/crypto/mac/CMakeLists.txt b/src/crypto/mac/CMakeLists.txt index ca3b71d..22bc95e 100644 --- a/src/crypto/mac/CMakeLists.txt +++ b/src/crypto/mac/CMakeLists.txt @@ -1,26 +1,25 @@ add_library(macs STATIC "${CMAKE_CURRENT_BINARY_DIR}/macs.c") -function(fastd_mac name) - string(REPLACE - _ name_ "${name}") - string(TOUPPER "${name_}" NAME) +macro(fastd_mac name) + fastd_module(mac enabled "MAC" ${name} ${ARGN}) - set(WITH_MAC_${NAME} TRUE CACHE BOOL "Include the ${name} MAC") - - if(WITH_MAC_${NAME}) + if(${enabled}) set_property(GLOBAL APPEND PROPERTY FASTD_MACS ${name}) - endif(WITH_MAC_${NAME}) -endfunction(fastd_mac) + endif(${enabled}) +endmacro(fastd_mac) macro(fastd_mac_impl mac name) string(REPLACE - _ mac_ "${mac}") string(TOUPPER "${mac_}" MAC) - fastd_module(mac enabled "MAC implementation" "${mac} ${name}" ${ARGN}) + if(WITH_MAC_${MAC}) + fastd_module(mac enabled "MAC implementation" "${mac} ${name}" ${ARGN}) - if(${enabled}) - set_property(GLOBAL APPEND PROPERTY FASTD_MAC_${MAC}_IMPLS ${name}) - endif(${enabled}) + if(${enabled}) + set_property(TARGET "mac_${mac_}" APPEND PROPERTY FASTD_MAC_IMPLS ${name}) + endif(${enabled}) + endif(WITH_MAC_${MAC}) endmacro(fastd_mac_impl) macro(fastd_mac_impl_include_directories mac name) @@ -48,16 +47,18 @@ foreach(mac ${MACS}) string(REPLACE - _ mac_ "${mac}") string(TOUPPER "${mac_}" MAC) - set(MAC_LIST "${MAC_LIST}\n{\"${mac}\", mac_${mac_}_impls},") - set(MAC_IMPLS "${MAC_IMPLS}\nstatic const fastd_mac_t *const mac_${mac_}_impls[] = {") + set(MAC_DEFINITIONS "${MAC_DEFINITIONS}\nextern const fastd_mac_info_t fastd_mac_info_${mac_};") + set(MAC_LIST "${MAC_LIST}\n{\"${mac}\", &fastd_mac_info_${mac_}, mac_${mac_}_impls},") + set(MAC_IMPLS "${MAC_IMPLS}\nstatic const fastd_mac_impl_t mac_${mac_}_impls[] = {") + - get_property(IMPLS GLOBAL PROPERTY FASTD_MAC_${MAC}_IMPLS) + get_property(IMPLS TARGET "mac_${mac_}" PROPERTY FASTD_MAC_IMPLS) foreach(impl ${IMPLS}) set(MAC_DEFINITIONS "${MAC_DEFINITIONS}\nextern const fastd_mac_t fastd_mac_${mac_}_${impl};") - set(MAC_IMPLS "${MAC_IMPLS}&fastd_mac_${mac_}_${impl}, ") + set(MAC_IMPLS "${MAC_IMPLS}{\"${impl}\", &fastd_mac_${mac_}_${impl}}, ") endforeach(impl) - set(MAC_IMPLS "${MAC_IMPLS}NULL};") + set(MAC_IMPLS "${MAC_IMPLS}{NULL, NULL}};") endforeach(mac) get_property(LIBS TARGET macs PROPERTY FASTD_LINK_LIBRARIES) diff --git a/src/crypto/mac/ghash/CMakeLists.txt b/src/crypto/mac/ghash/CMakeLists.txt index 7d44b8a..1fd04a4 100644 --- a/src/crypto/mac/ghash/CMakeLists.txt +++ b/src/crypto/mac/ghash/CMakeLists.txt @@ -1,2 +1,2 @@ -fastd_mac(ghash) +fastd_mac(ghash ghash.c) add_subdirectory(builtin) diff --git a/src/crypto/mac/ghash/builtin/ghash_builtin.c b/src/crypto/mac/ghash/builtin/ghash_builtin.c index 0af30ed..cc47427 100644 --- a/src/crypto/mac/ghash/builtin/ghash_builtin.c +++ b/src/crypto/mac/ghash/builtin/ghash_builtin.c @@ -132,9 +132,6 @@ static void ghash_free(fastd_context_t *ctx UNUSED, fastd_mac_context_t *mctx UN } const fastd_mac_t fastd_mac_ghash_builtin = { - .name = "builtin", - .key_length = sizeof(fastd_block128_t), - .initialize = ghash_initialize, .init_state = ghash_init_state, diff --git a/src/crypto/mac/ghash/ghash.c b/src/crypto/mac/ghash/ghash.c new file mode 100644 index 0000000..6c165a4 --- /dev/null +++ b/src/crypto/mac/ghash/ghash.c @@ -0,0 +1,32 @@ +/* + 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" + + +const fastd_mac_info_t fastd_mac_info_ghash = { + .key_length = 16, +}; diff --git a/src/crypto/mac/macs.c.in b/src/crypto/mac/macs.c.in index 43031ee..9952396 100644 --- a/src/crypto/mac/macs.c.in +++ b/src/crypto/mac/macs.c.in @@ -30,14 +30,20 @@ @MAC_DEFINITIONS@ -typedef struct mac_impl_list { +typedef struct fastd_mac_impl { const char *name; - const fastd_mac_t *const *impls; -} mac_impl_list_t; + const fastd_mac_t *impl; +} fastd_mac_impl_t; + +typedef struct mac_entry { + const char *name; + const fastd_mac_info_t *info; + const fastd_mac_impl_t *impls; +} mac_entry_t; @MAC_IMPLS@ -static const mac_impl_list_t macs[] = { @MAC_LIST@ +static const mac_entry_t macs[] = { @MAC_LIST@ }; @@ -46,7 +52,7 @@ const fastd_mac_t** fastd_mac_config_alloc(void) { size_t i; for (i = 0; i < array_size(macs); i++) - mac_conf[i] = macs[i].impls[0]; + mac_conf[i] = macs[i].impls[0].impl; return mac_conf; } @@ -60,9 +66,9 @@ bool fastd_mac_config(const fastd_mac_t **mac_conf, const char *name, const char for (i = 0; i < array_size(macs); i++) { if (!strcmp(macs[i].name, name)) { size_t j; - for (j = 0; macs[i].impls[j]; j++) { - if (!strcmp(macs[i].impls[j]->name, impl)) { - mac_conf[i] = macs[i].impls[j]; + for (j = 0; macs[i].impls[j].impl; j++) { + if (!strcmp(macs[i].impls[j].name, impl)) { + mac_conf[i] = macs[i].impls[j].impl; return true; } } @@ -92,20 +98,28 @@ void fastd_mac_free(fastd_context_t *ctx) { free(ctx->mac_contexts); } -bool fastd_mac_available(const char *name) { +const fastd_mac_info_t* fastd_mac_info_get_by_name(const char *name) { size_t i; for (i = 0; i < array_size(macs); i++) { - if (!strcmp(macs[i].name, name)) - return macs[i].impls[0]; + if (strcmp(macs[i].name, name)) + continue; + + if (!macs[i].impls[0].impl) + continue; + + return macs[i].info; } - return false; + return NULL; } -const fastd_mac_t* fastd_mac_get_by_name(fastd_context_t *ctx, const char *name, const fastd_mac_context_t **cctx) { +const fastd_mac_t* fastd_mac_get_by_name(fastd_context_t *ctx, const char *name, const fastd_mac_info_t **info, const fastd_mac_context_t **cctx) { size_t i; for (i = 0; i < array_size(macs); i++) { if (!strcmp(macs[i].name, name)) { + if (info) + *info = macs[i].info; + if (cctx) *cctx = ctx->mac_contexts[i]; diff --git a/src/fastd.c b/src/fastd.c index f30511d..469fc6f 100644 --- a/src/fastd.c +++ b/src/fastd.c @@ -26,6 +26,7 @@ #include "fastd.h" #include "config.h" +#include "crypto.h" #include "handshake.h" #include "peer.h" #include <fastd_version.h> diff --git a/src/fastd.h b/src/fastd.h index c253a97..012d532 100644 --- a/src/fastd.h +++ b/src/fastd.h @@ -341,16 +341,6 @@ void fastd_logf(const fastd_context_t *ctx, fastd_loglevel_t level, const char * const fastd_method_t* fastd_method_get_by_name(const char *name); -void fastd_cipher_init(fastd_context_t *ctx); -void fastd_cipher_free(fastd_context_t *ctx); -bool fastd_cipher_available(const char *name); -const fastd_cipher_t* fastd_cipher_get_by_name(fastd_context_t *ctx, const char *name, const fastd_cipher_context_t **cctx); - -void fastd_mac_init(fastd_context_t *ctx); -void fastd_mac_free(fastd_context_t *ctx); -bool fastd_mac_available(const char *name); -const fastd_mac_t* fastd_mac_get_by_name(fastd_context_t *ctx, const char *name, const fastd_mac_context_t **cctx); - void fastd_tuntap_open(fastd_context_t *ctx); fastd_buffer_t fastd_tuntap_read(fastd_context_t *ctx); void fastd_tuntap_write(fastd_context_t *ctx, fastd_buffer_t buffer); diff --git a/src/methods/cipher_test/cipher_test.c b/src/methods/cipher_test/cipher_test.c index b9a7881..573e90a 100644 --- a/src/methods/cipher_test/cipher_test.c +++ b/src/methods/cipher_test/cipher_test.c @@ -31,13 +31,14 @@ struct fastd_method_session_state { fastd_method_common_t common; + const fastd_cipher_info_t *cipher_info; const fastd_cipher_t *cipher; const fastd_cipher_context_t *cipher_ctx; fastd_cipher_state_t *cipher_state; }; -static bool cipher_get(fastd_context_t *ctx, const char *name, const fastd_cipher_t **cipher, const fastd_cipher_context_t **cctx) { +static bool cipher_get(fastd_context_t *ctx, const char *name, const fastd_cipher_info_t **info, const fastd_cipher_t **cipher, const fastd_cipher_context_t **cctx) { size_t len = strlen(name); if (len < 12) @@ -50,27 +51,36 @@ static bool cipher_get(fastd_context_t *ctx, const char *name, const fastd_ciphe memcpy(cipher_name, name, len-12); cipher_name[len-12] = 0; + const fastd_cipher_info_t *cipher_info = NULL; + if (ctx) { - *cipher = fastd_cipher_get_by_name(ctx, cipher_name, cctx); - return *cipher; + *cipher = fastd_cipher_get_by_name(ctx, cipher_name, &cipher_info, cctx); + if (!*cipher) + return false; } else { - return fastd_cipher_available(cipher_name); + cipher_info = fastd_cipher_info_get_by_name(cipher_name); + if (!cipher_info) + return false; } + + if (info) + *info = cipher_info; + + return true; } static bool method_provides(const char *name) { - return cipher_get(NULL, name, NULL, NULL); + return cipher_get(NULL, name, NULL, NULL, NULL); } static size_t method_key_length(fastd_context_t *ctx, const char *name) { - const fastd_cipher_t *cipher = NULL; - const fastd_cipher_context_t *cctx; - if (!cipher_get(ctx, name, &cipher, &cctx)) + const fastd_cipher_info_t *info; + if (!cipher_get(NULL, name, &info, NULL, NULL)) exit_bug(ctx, "cipher-test: can't get cipher key length"); - return cipher->key_length; + return info->key_length; } static fastd_method_session_state_t* method_session_init(fastd_context_t *ctx, const char *name, const uint8_t *secret, bool initiator) { @@ -78,7 +88,7 @@ static fastd_method_session_state_t* method_session_init(fastd_context_t *ctx, c fastd_method_common_init(ctx, &session->common, initiator); - if (!cipher_get(ctx, name, &session->cipher, &session->cipher_ctx)) + if (!cipher_get(ctx, name, &session->cipher_info, &session->cipher, &session->cipher_ctx)) exit_bug(ctx, "cipher-test: can't instanciate cipher"); session->cipher_state = session->cipher->init_state(ctx, session->cipher_ctx, secret); @@ -118,11 +128,11 @@ static bool method_encrypt(fastd_context_t *ctx, fastd_peer_t *peer UNUSED, fast if (tail_len) memset(in.data+in.len, 0, tail_len); - uint8_t nonce[session->cipher->iv_length]; - if (session->cipher->iv_length) { - memset(nonce, 0, session->cipher->iv_length); - memcpy(nonce, session->common.send_nonce, min_size_t(COMMON_NONCEBYTES, session->cipher->iv_length)); - nonce[session->cipher->iv_length-1] = 1; + uint8_t nonce[session->cipher_info->iv_length]; + if (session->cipher_info->iv_length) { + memset(nonce, 0, session->cipher_info->iv_length); + memcpy(nonce, session->common.send_nonce, min_size_t(COMMON_NONCEBYTES, session->cipher_info->iv_length)); + nonce[session->cipher_info->iv_length-1] = 1; } int n_blocks = block_count(in.len, sizeof(fastd_block128_t)); @@ -161,11 +171,11 @@ static bool method_decrypt(fastd_context_t *ctx, fastd_peer_t *peer, fastd_metho if (common_nonce[COMMON_NONCEBYTES]) /* flags */ return false; - uint8_t nonce[session->cipher->iv_length]; - if (session->cipher->iv_length) { - memset(nonce, 0, session->cipher->iv_length); - memcpy(nonce, common_nonce, min_size_t(COMMON_NONCEBYTES, session->cipher->iv_length)); - nonce[session->cipher->iv_length-1] = 1; + uint8_t nonce[session->cipher_info->iv_length]; + if (session->cipher_info->iv_length) { + memset(nonce, 0, session->cipher_info->iv_length); + memcpy(nonce, common_nonce, min_size_t(COMMON_NONCEBYTES, session->cipher_info->iv_length)); + nonce[session->cipher_info->iv_length-1] = 1; } int64_t age; diff --git a/src/methods/composed_gmac/composed_gmac.c b/src/methods/composed_gmac/composed_gmac.c index eae27db..75533d2 100644 --- a/src/methods/composed_gmac/composed_gmac.c +++ b/src/methods/composed_gmac/composed_gmac.c @@ -33,22 +33,27 @@ static const fastd_block128_t ZERO_BLOCK = {}; struct fastd_method_session_state { fastd_method_common_t common; + const fastd_cipher_info_t *cipher_info; const fastd_cipher_t *cipher; const fastd_cipher_context_t *cipher_ctx; fastd_cipher_state_t *cipher_state; + const fastd_cipher_info_t *gmac_cipher_info; const fastd_cipher_t *gmac_cipher; const fastd_cipher_context_t *gmac_cipher_ctx; fastd_cipher_state_t *gmac_cipher_state; + const fastd_mac_info_t *ghash_info; const fastd_mac_t *ghash; const fastd_mac_context_t *ghash_ctx; fastd_mac_state_t *ghash_state; }; -static bool cipher_get(fastd_context_t *ctx, const char *name, const fastd_cipher_t **cipher, const fastd_cipher_context_t **cctx, const fastd_cipher_t **gmac_cipher, const fastd_cipher_context_t **gmac_cctx) { - if (!fastd_mac_available("ghash")) +static bool cipher_get(fastd_context_t *ctx, const char *name, + const fastd_cipher_info_t **cipher_info, const fastd_cipher_t **cipher, const fastd_cipher_context_t **cctx, + const fastd_cipher_info_t **gmac_cipher_info, const fastd_cipher_t **gmac_cipher, const fastd_cipher_context_t **gmac_cctx) { + if (!fastd_mac_info_get_by_name("ghash")) return false; size_t len = strlen(name); @@ -71,32 +76,52 @@ static bool cipher_get(fastd_context_t *ctx, const char *name, const fastd_ciphe *gmac_cipher_name = 0; gmac_cipher_name++; + const fastd_cipher_info_t *info = NULL; + const fastd_cipher_info_t *gmac_info = NULL; + if (ctx) { - *cipher = fastd_cipher_get_by_name(ctx, cipher_name, cctx); - *gmac_cipher = fastd_cipher_get_by_name(ctx, gmac_cipher_name, gmac_cctx); - return *cipher && *gmac_cipher; + *cipher = fastd_cipher_get_by_name(ctx, cipher_name, &info, cctx); + *gmac_cipher = fastd_cipher_get_by_name(ctx, gmac_cipher_name, &gmac_info, gmac_cctx); + if (!(*cipher && *gmac_cipher)) + return false; } else { - return fastd_cipher_available(cipher_name) && fastd_cipher_available(gmac_cipher_name); + info = fastd_cipher_info_get_by_name(cipher_name); + gmac_info = fastd_cipher_info_get_by_name(gmac_cipher_name); + if (!(info && gmac_info)) + return false; } + + if (cipher_info) + *cipher_info = info; + + if (gmac_cipher_info) + *gmac_cipher_info = gmac_info; + + return true; } static bool method_provides(const char *name) { - return cipher_get(NULL, name, NULL, NULL, NULL, NULL); + const fastd_cipher_info_t *gmac_cipher_info; + + if (!cipher_get(NULL, name, NULL, NULL, NULL, &gmac_cipher_info, NULL, NULL)) + return false; + + if (gmac_cipher_info->iv_length <= COMMON_NONCEBYTES) + return false; + + return true; } static size_t method_key_length(fastd_context_t *ctx, const char *name) { - const fastd_cipher_t *cipher = NULL; - const fastd_cipher_context_t *cctx; - - const fastd_cipher_t *gmac_cipher = NULL; - const fastd_cipher_context_t *gmac_cctx; + const fastd_cipher_info_t *cipher_info; + const fastd_cipher_info_t *gmac_cipher_info; - if (!cipher_get(ctx, name, &cipher, &cctx, &gmac_cipher, &gmac_cctx)) + if (!cipher_get(NULL, name, &cipher_info, NULL, NULL, &gmac_cipher_info, NULL, NULL)) exit_bug(ctx, "composed-gmac: can't get cipher key length"); - return cipher->key_length + gmac_cipher->key_length; + return cipher_info->key_length + gmac_cipher_info->key_length; } static fastd_method_session_state_t* method_session_init(fastd_context_t *ctx, const char *name, const uint8_t *secret, bool initiator) { @@ -104,25 +129,27 @@ static fastd_method_session_state_t* method_session_init(fastd_context_t *ctx, c fastd_method_common_init(ctx, &session->common, initiator); - if (!cipher_get(ctx, name, &session->cipher, &session->cipher_ctx, &session->gmac_cipher, &session->gmac_cipher_ctx)) + if (!cipher_get(ctx, name, + &session->cipher_info, &session->cipher, &session->cipher_ctx, + &session->gmac_cipher_info, &session->gmac_cipher, &session->gmac_cipher_ctx)) exit_bug(ctx, "composed-gmac: can't instanciate cipher"); session->cipher_state = session->cipher->init_state(ctx, session->cipher_ctx, secret); - if (session->cipher->iv_length && session->cipher->iv_length <= COMMON_NONCEBYTES) + if (session->cipher_info->iv_length && session->cipher_info->iv_length <= COMMON_NONCEBYTES) exit_bug(ctx, "composed-gmac: iv_length to small"); - session->gmac_cipher_state = session->gmac_cipher->init_state(ctx, session->gmac_cipher_ctx, secret + session->cipher->key_length); - if (session->gmac_cipher->iv_length <= COMMON_NONCEBYTES) + session->gmac_cipher_state = session->gmac_cipher->init_state(ctx, session->gmac_cipher_ctx, secret + session->cipher_info->key_length); + if (session->gmac_cipher_info->iv_length <= COMMON_NONCEBYTES) exit_bug(ctx, "composed-gmac: GMAC cipher iv_length to small"); fastd_block128_t H; - uint8_t zeroiv[session->gmac_cipher->iv_length]; - memset(zeroiv, 0, session->gmac_cipher->iv_length); + uint8_t zeroiv[session->gmac_cipher_info->iv_length]; + memset(zeroiv, 0, session->gmac_cipher_info->iv_length); session->gmac_cipher->crypt(ctx, session->gmac_cipher_state, &H, &ZERO_BLOCK, sizeof(fastd_block128_t), zeroiv); - session->ghash = fastd_mac_get_by_name(ctx, "ghash", &session->ghash_ctx); + session->ghash = fastd_mac_get_by_name(ctx, "ghash", &session->ghash_info, &session->ghash_ctx); if (!session->ghash) exit_bug(ctx, "composed-gmac: can't instanciate ghash mac"); @@ -179,19 +206,19 @@ static bool method_encrypt(fastd_context_t *ctx, fastd_peer_t *peer UNUSED, fast fastd_block128_t *outblocks = out->data; fastd_block128_t sig; - uint8_t gmac_nonce[session->gmac_cipher->iv_length]; - memset(gmac_nonce, 0, session->gmac_cipher->iv_length); + uint8_t gmac_nonce[session->gmac_cipher_info->iv_length]; + memset(gmac_nonce, 0, session->gmac_cipher_info->iv_length); memcpy(gmac_nonce, session->common.send_nonce, COMMON_NONCEBYTES); - gmac_nonce[session->gmac_cipher->iv_length-1] = 1; + gmac_nonce[session->gmac_cipher_info->iv_length-1] = 1; bool ok = session->gmac_cipher->crypt(ctx, session->gmac_cipher_state, outblocks, &ZERO_BLOCK, sizeof(fastd_block128_t), gmac_nonce); if (ok) { - uint8_t nonce[session->cipher->iv_length]; - if (session->cipher->iv_length) { - memset(nonce, 0, session->cipher->iv_length); + uint8_t nonce[session->cipher_info->iv_length]; + if (session->cipher_info->iv_length) { + memset(nonce, 0, session->cipher_info->iv_length); memcpy(nonce, session->common.send_nonce, COMMON_NONCEBYTES); - nonce[session->cipher->iv_length-1] = 1; + nonce[session->cipher_info->iv_length-1] = 1; } ok = session->cipher->crypt(ctx, session->cipher_state, outblocks+1, inblocks, n_blocks*sizeof(fastd_block128_t), nonce); @@ -241,16 +268,16 @@ static bool method_decrypt(fastd_context_t *ctx, fastd_peer_t *peer, fastd_metho if (!fastd_method_is_nonce_valid(ctx, &session->common, common_nonce, &age)) return false; - uint8_t gmac_nonce[session->gmac_cipher->iv_length]; - memset(gmac_nonce, 0, session->gmac_cipher->iv_length); + uint8_t gmac_nonce[session->gmac_cipher_info->iv_length]; + memset(gmac_nonce, 0, session->gmac_cipher_info->iv_length); memcpy(gmac_nonce, common_nonce, COMMON_NONCEBYTES); - gmac_nonce[session->gmac_cipher->iv_length-1] = 1; + gmac_nonce[session->gmac_cipher_info->iv_length-1] = 1; - uint8_t nonce[session->cipher->iv_length]; - if (session->cipher->iv_length) { - memset(nonce, 0, session->cipher->iv_length); + uint8_t nonce[session->cipher_info->iv_length]; + if (session->cipher_info->iv_length) { + memset(nonce, 0, session->cipher_info->iv_length); memcpy(nonce, common_nonce, COMMON_NONCEBYTES); - nonce[session->cipher->iv_length-1] = 1; + nonce[session->cipher_info->iv_length-1] = 1; } fastd_buffer_push_head(ctx, &in, COMMON_HEADBYTES); diff --git a/src/methods/generic_gcm/generic_gcm.c b/src/methods/generic_gcm/generic_gcm.c index 5d3f6c4..a92ad1e 100644 --- a/src/methods/generic_gcm/generic_gcm.c +++ b/src/methods/generic_gcm/generic_gcm.c @@ -31,18 +31,20 @@ struct fastd_method_session_state { fastd_method_common_t common; + const fastd_cipher_info_t *cipher_info; const fastd_cipher_t *cipher; const fastd_cipher_context_t *cipher_ctx; fastd_cipher_state_t *cipher_state; + const fastd_mac_info_t *ghash_info; const fastd_mac_t *ghash; const fastd_mac_context_t *ghash_ctx; fastd_mac_state_t *ghash_state; }; -static bool cipher_get(fastd_context_t *ctx, const char *name, const fastd_cipher_t **cipher, const fastd_cipher_context_t **cctx) { - if (!fastd_mac_available("ghash")) +static bool cipher_get(fastd_context_t *ctx, const char *name, const fastd_cipher_info_t **cipher_info, const fastd_cipher_t **cipher, const fastd_cipher_context_t **cctx) { + if (!fastd_mac_info_get_by_name("ghash")) return false; size_t len = strlen(name); @@ -57,27 +59,39 @@ static bool cipher_get(fastd_context_t *ctx, const char *name, const fastd_ciphe memcpy(name_ctr, name, len-3); strncpy(name_ctr+len-3, "ctr", 4); + const fastd_cipher_info_t *info = NULL; + if (ctx) { - *cipher = fastd_cipher_get_by_name(ctx, name_ctr, cctx); - return *cipher; + *cipher = fastd_cipher_get_by_name(ctx, name_ctr, &info, cctx); + if (!*cipher) + return false; } else { - return fastd_cipher_available(name_ctr); + info = fastd_cipher_info_get_by_name(name_ctr); + if (!info) + return false; } + + if (info->iv_length <= COMMON_NONCEBYTES) + return false; + + if (cipher_info) + *cipher_info = info; + + return true; } static bool method_provides(const char *name) { - return cipher_get(NULL, name, NULL, NULL); + return cipher_get(NULL, name, NULL, NULL, NULL); } static size_t method_key_length(fastd_context_t *ctx, const char *name) { - const fastd_cipher_t *cipher = NULL; - const fastd_cipher_context_t *cctx; - if (!cipher_get(ctx, name, &cipher, &cctx)) + const fastd_cipher_info_t *cipher_info; + if (!cipher_get(NULL, name, &cipher_info, NULL, NULL)) exit_bug(ctx, "generic-gcm: can't get cipher key length"); - return cipher->key_length; + return cipher_info->key_length; } static fastd_method_session_state_t* method_session_init(fastd_context_t *ctx, const char *name, const uint8_t *secret, bool initiator) { @@ -85,7 +99,7 @@ static fastd_method_session_state_t* method_session_init(fastd_context_t *ctx, c fastd_method_common_init(ctx, &session->common, initiator); - if (!cipher_get(ctx, name, &session->cipher, &session->cipher_ctx)) + if (!cipher_get(ctx, name, &session->cipher_info, &session->cipher, &session->cipher_ctx)) exit_bug(ctx, "generic-gcm: can't instanciate cipher"); session->cipher_state = session->cipher->init_state(ctx, session->cipher_ctx, secret); @@ -93,15 +107,15 @@ static fastd_method_session_state_t* method_session_init(fastd_context_t *ctx, c static const fastd_block128_t zeroblock = {}; fastd_block128_t H; - if (session->cipher->iv_length <= COMMON_NONCEBYTES) + if (session->cipher_info->iv_length <= COMMON_NONCEBYTES) exit_bug(ctx, "generic-gcm: iv_length to small"); - uint8_t zeroiv[session->cipher->iv_length]; - memset(zeroiv, 0, session->cipher->iv_length); + uint8_t zeroiv[session->cipher_info->iv_length]; + memset(zeroiv, 0, session->cipher_info->iv_length); session->cipher->crypt(ctx, session->cipher_state, &H, &zeroblock, sizeof(fastd_block128_t), zeroiv); - session->ghash = fastd_mac_get_by_name(ctx, "ghash", &session->ghash_ctx); + session->ghash = fastd_mac_get_by_name(ctx, "ghash", &session->ghash_info, &session->ghash_ctx); if (!session->ghash) exit_bug(ctx, "generic-gcm: can't instanciate ghash mac"); @@ -161,10 +175,10 @@ static bool method_encrypt(fastd_context_t *ctx, fastd_peer_t *peer UNUSED, fast if (tail_len) memset(in.data+in.len, 0, tail_len); - uint8_t nonce[session->cipher->iv_length]; - memset(nonce, 0, session->cipher->iv_length); + uint8_t nonce[session->cipher_info->iv_length]; + memset(nonce, 0, session->cipher_info->iv_length); memcpy(nonce, session->common.send_nonce, COMMON_NONCEBYTES); - nonce[session->cipher->iv_length-1] = 1; + nonce[session->cipher_info->iv_length-1] = 1; int n_blocks = block_count(in.len, sizeof(fastd_block128_t)); @@ -214,10 +228,10 @@ static bool method_decrypt(fastd_context_t *ctx, fastd_peer_t *peer, fastd_metho if (((const uint8_t*)in.data)[COMMON_NONCEBYTES]) /* flags */ return false; - uint8_t nonce[session->cipher->iv_length]; - memset(nonce, 0, session->cipher->iv_length); + uint8_t nonce[session->cipher_info->iv_length]; + memset(nonce, 0, session->cipher_info->iv_length); memcpy(nonce, in.data, COMMON_NONCEBYTES); - nonce[session->cipher->iv_length-1] = 1; + nonce[session->cipher_info->iv_length-1] = 1; int64_t age; if (!fastd_method_is_nonce_valid(ctx, &session->common, nonce, &age)) diff --git a/src/methods/generic_gmac/generic_gmac.c b/src/methods/generic_gmac/generic_gmac.c index 03377c5..86c02f7 100644 --- a/src/methods/generic_gmac/generic_gmac.c +++ b/src/methods/generic_gmac/generic_gmac.c @@ -31,18 +31,20 @@ struct fastd_method_session_state { fastd_method_common_t common; + const fastd_cipher_info_t *cipher_info; const fastd_cipher_t *cipher; const fastd_cipher_context_t *cipher_ctx; fastd_cipher_state_t *cipher_state; + const fastd_mac_info_t *ghash_info; const fastd_mac_t *ghash; const fastd_mac_context_t *ghash_ctx; fastd_mac_state_t *ghash_state; }; -static bool cipher_get(fastd_context_t *ctx, const char *name, const fastd_cipher_t **cipher, const fastd_cipher_context_t **cctx) { - if (!fastd_mac_available("ghash")) +static bool cipher_get(fastd_context_t *ctx, const char *name, const fastd_cipher_info_t **cipher_info, const fastd_cipher_t **cipher, const fastd_cipher_context_t **cctx) { + if (!fastd_mac_info_get_by_name("ghash")) return false; size_t len = strlen(name); @@ -60,27 +62,39 @@ static bool cipher_get(fastd_context_t *ctx, const char *name, const fastd_ciphe memcpy(cipher_name, name, len-5); cipher_name[len-5] = 0; + const fastd_cipher_info_t *info = NULL; + if (ctx) { - *cipher = fastd_cipher_get_by_name(ctx, cipher_name, cctx); - return *cipher; + *cipher = fastd_cipher_get_by_name(ctx, cipher_name, &info, cctx); + if (!*cipher) + return false; } else { - return fastd_cipher_available(cipher_name); + info = fastd_cipher_info_get_by_name(cipher_name); + if (!info) + return false; } + + if (info->iv_length <= COMMON_NONCEBYTES) + return false; + + if (cipher_info) + *cipher_info = info; + + return true; } static bool method_provides(const char *name) { - return cipher_get(NULL, name, NULL, NULL); + return cipher_get(NULL, name, NULL, NULL, NULL); } static size_t method_key_length(fastd_context_t *ctx, const char *name) { - const fastd_cipher_t *cipher = NULL; - const fastd_cipher_context_t *cctx; - if (!cipher_get(ctx, name, &cipher, &cctx)) + const fastd_cipher_info_t *cipher_info; + if (!cipher_get(NULL, name, &cipher_info, NULL, NULL)) exit_bug(ctx, "generic-gmac: can't get cipher key length"); - return cipher->key_length; + return cipher_info->key_length; } static fastd_method_session_state_t* method_session_init(fastd_context_t *ctx, const char *name, const uint8_t *secret, bool initiator) { @@ -88,7 +102,7 @@ static fastd_method_session_state_t* method_session_init(fastd_context_t *ctx, c fastd_method_common_init(ctx, &session->common, initiator); - if (!cipher_get(ctx, name, &session->cipher, &session->cipher_ctx)) + if (!cipher_get(ctx, name, &session->cipher_info, &session->cipher, &session->cipher_ctx)) exit_bug(ctx, "generic-gmac: can't instanciate cipher"); session->cipher_state = session->cipher->init_state(ctx, session->cipher_ctx, secret); @@ -96,15 +110,15 @@ static fastd_method_session_state_t* method_session_init(fastd_context_t *ctx, c static const fastd_block128_t zeroblock = {}; fastd_block128_t H; - if (session->cipher->iv_length <= COMMON_NONCEBYTES) + if (session->cipher_info->iv_length <= COMMON_NONCEBYTES) exit_bug(ctx, "generic-gmac: iv_length to small"); - uint8_t zeroiv[session->cipher->iv_length]; - memset(zeroiv, 0, session->cipher->iv_length); + uint8_t zeroiv[session->cipher_info->iv_length]; + memset(zeroiv, 0, session->cipher_info->iv_length); session->cipher->crypt(ctx, session->cipher_state, &H, &zeroblock, sizeof(fastd_block128_t), zeroiv); - session->ghash = fastd_mac_get_by_name(ctx, "ghash", &session->ghash_ctx); + session->ghash = fastd_mac_get_by_name(ctx, "ghash", &session->ghash_info, &session->ghash_ctx); if (!session->ghash) exit_bug(ctx, "generic-gmac: can't instanciate ghash mac"); @@ -164,10 +178,10 @@ static bool method_encrypt(fastd_context_t *ctx, fastd_peer_t *peer UNUSED, fast if (tail_len) memset(in.data+in.len, 0, tail_len); - uint8_t nonce[session->cipher->iv_length]; - memset(nonce, 0, session->cipher->iv_length); + uint8_t nonce[session->cipher_info->iv_length]; + memset(nonce, 0, session->cipher_info->iv_length); memcpy(nonce, session->common.send_nonce, COMMON_NONCEBYTES); - nonce[session->cipher->iv_length-1] = 1; + nonce[session->cipher_info->iv_length-1] = 1; int n_blocks = block_count(in.len, sizeof(fastd_block128_t)); @@ -217,10 +231,10 @@ static bool method_decrypt(fastd_context_t *ctx, fastd_peer_t *peer, fastd_metho if (((const uint8_t*)in.data)[COMMON_NONCEBYTES]) /* flags */ return false; - uint8_t nonce[session->cipher->iv_length]; - memset(nonce, 0, session->cipher->iv_length); + uint8_t nonce[session->cipher_info->iv_length]; + memset(nonce, 0, session->cipher_info->iv_length); memcpy(nonce, in.data, COMMON_NONCEBYTES); - nonce[session->cipher->iv_length-1] = 1; + nonce[session->cipher_info->iv_length-1] = 1; int64_t age; if (!fastd_method_is_nonce_valid(ctx, &session->common, nonce, &age)) diff --git a/src/methods/generic_poly1305/generic_poly1305.c b/src/methods/generic_poly1305/generic_poly1305.c index 84f9f9a..3820907 100644 --- a/src/methods/generic_poly1305/generic_poly1305.c +++ b/src/methods/generic_poly1305/generic_poly1305.c @@ -36,13 +36,14 @@ struct fastd_method_session_state { fastd_method_common_t common; + const fastd_cipher_info_t *cipher_info; const fastd_cipher_t *cipher; const fastd_cipher_context_t *cipher_ctx; fastd_cipher_state_t *cipher_state; }; -static bool cipher_get(fastd_context_t *ctx, const char *name, const fastd_cipher_t **cipher, const fastd_cipher_context_t **cctx) { +static bool cipher_get(fastd_context_t *ctx, const char *name, const fastd_cipher_info_t **cipher_info, const fastd_cipher_t **cipher, const fastd_cipher_context_t **cctx) { size_t len = strlen(name); if (len < 9) @@ -55,27 +56,39 @@ static bool cipher_get(fastd_context_t *ctx, const char *name, const fastd_ciphe memcpy(cipher_name, name, len-9); cipher_name[len-9] = 0; + const fastd_cipher_info_t *info = NULL; + if (ctx) { - *cipher = fastd_cipher_get_by_name(ctx, cipher_name, cctx); - return *cipher; + *cipher = fastd_cipher_get_by_name(ctx, cipher_name, &info, cctx); + if (!*cipher) + return false; } else { - return fastd_cipher_available(cipher_name); + info = fastd_cipher_info_get_by_name(cipher_name); + if (!info) + return false; } + + if (info->iv_length <= COMMON_NONCEBYTES) + return false; + + if (cipher_info) + *cipher_info = info; + + return true; } static bool method_provides(const char *name) { - return cipher_get(NULL, name, NULL, NULL); + return cipher_get(NULL, name, NULL, NULL, NULL); } static size_t method_key_length(fastd_context_t *ctx, const char *name) { - const fastd_cipher_t *cipher = NULL; - const fastd_cipher_context_t *cctx; - if (!cipher_get(ctx, name, &cipher, &cctx)) + const fastd_cipher_info_t *cipher_info; + if (!cipher_get(NULL, name, &cipher_info, NULL, NULL)) exit_bug(ctx, "generic-poly1305: can't get cipher key length"); - return cipher->key_length; + return cipher_info->key_length; } static fastd_method_session_state_t* method_session_init(fastd_context_t *ctx, const char *name, const uint8_t *secret, bool initiator) { @@ -83,12 +96,12 @@ static fastd_method_session_state_t* method_session_init(fastd_context_t *ctx, c fastd_method_common_init(ctx, &session->common, initiator); - if (!cipher_get(ctx, name, &session->cipher, &session->cipher_ctx)) + if (!cipher_get(ctx, name, &session->cipher_info, &session->cipher, &session->cipher_ctx)) exit_bug(ctx, "generic-poly1305: can't instanciate cipher"); session->cipher_state = session->cipher->init_state(ctx, session->cipher_ctx, secret); - if (session->cipher->iv_length <= COMMON_NONCEBYTES) + if (session->cipher_info->iv_length <= COMMON_NONCEBYTES) exit_bug(ctx, "generic-poly1305: iv_length to small"); return session; @@ -127,10 +140,10 @@ static bool method_encrypt(fastd_context_t *ctx, fastd_peer_t *peer UNUSED, fast if (tail_len) memset(in.data+in.len, 0, tail_len); - uint8_t nonce[session->cipher->iv_length]; - memset(nonce, 0, session->cipher->iv_length); + uint8_t nonce[session->cipher_info->iv_length]; + memset(nonce, 0, session->cipher_info->iv_length); memcpy(nonce, session->common.send_nonce, COMMON_NONCEBYTES); - nonce[session->cipher->iv_length-1] = 1; + nonce[session->cipher_info->iv_length-1] = 1; int n_blocks = block_count(in.len, sizeof(fastd_block128_t)); @@ -174,10 +187,10 @@ static bool method_decrypt(fastd_context_t *ctx, fastd_peer_t *peer, fastd_metho if (((const uint8_t*)in.data)[COMMON_NONCEBYTES]) /* flags */ return false; - uint8_t nonce[session->cipher->iv_length]; - memset(nonce, 0, session->cipher->iv_length); + uint8_t nonce[session->cipher_info->iv_length]; + memset(nonce, 0, session->cipher_info->iv_length); memcpy(nonce, in.data, COMMON_NONCEBYTES); - nonce[session->cipher->iv_length-1] = 1; + nonce[session->cipher_info->iv_length-1] = 1; int64_t age; if (!fastd_method_is_nonce_valid(ctx, &session->common, nonce, &age)) diff --git a/src/types.h b/src/types.h index 352bf7c..2796f38 100644 --- a/src/types.h +++ b/src/types.h @@ -114,7 +114,11 @@ typedef struct fastd_context fastd_context_t; typedef struct fastd_protocol fastd_protocol_t; typedef struct fastd_method fastd_method_t; + +typedef struct fastd_cipher_info fastd_cipher_info_t; typedef struct fastd_cipher fastd_cipher_t; + +typedef struct fastd_mac_info fastd_mac_info_t; typedef struct fastd_mac fastd_mac_t; typedef struct fastd_handshake fastd_handshake_t; |