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Remove network dependency from toxcrypto

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Diadlo 2017-01-29 22:36:22 +03:00
parent b19a9e5464
commit 1387c8f150
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GPG Key ID: 5AF9F2E29107C727
2 changed files with 16 additions and 6 deletions
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3
CMakeLists.txt
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@ -205,9 +205,6 @@ include(CheckFunctionExists)
check_function_exists(explicit_bzero HAVE_EXPLICIT_BZERO)
check_function_exists(memset_s HAVE_MEMSET_S)
target_link_modules(toxcrypto ${LIBSODIUM_LIBRARIES})
if(WIN32)
target_link_modules(toxcrypto ws2_32) # for htonl
endif()
# LAYER 2: Basic networking
# -------------------------

19
toxcore/crypto_core.c
View File

@ -27,10 +27,9 @@
#include "config.h"
#endif
#include "ccompat.h"
#include "crypto_core.h"
#include "network.h"
#include <string.h>
#ifndef VANILLA_NACL
@ -210,6 +209,20 @@ void increment_nonce(uint8_t *nonce)
carry >>= 8;
}
}
static uint32_t host_to_network(uint32_t x)
{
#if BYTE_ORDER == LITTLE_ENDIAN
return
((x >> 24) & 0x000000FF) | // move byte 3 to byte 0
((x >> 8) & 0x0000FF00) | // move byte 2 to byte 1
((x << 8) & 0x00FF0000) | // move byte 1 to byte 2
((x << 24) & 0xFF000000); // move byte 0 to byte 3
#else
return x;
#endif
}
/* increment the given nonce by num */
void increment_nonce_number(uint8_t *nonce, uint32_t host_order_num)
{
@ -218,7 +231,7 @@ void increment_nonce_number(uint8_t *nonce, uint32_t host_order_num)
* that loop bounds and their potential underflow or overflow
* are independent of user-controlled input (you may have heard of the Heartbleed bug).
*/
const uint32_t big_endian_num = net_htonl(host_order_num);
const uint32_t big_endian_num = host_to_network(host_order_num);
const uint8_t *const num_vec = (const uint8_t *) &big_endian_num;
uint8_t num_as_nonce[crypto_box_NONCEBYTES] = {0};
num_as_nonce[crypto_box_NONCEBYTES - 4] = num_vec[0];