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Add utility functions for big-endian int storage

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Use instead of htonl().
This commit is contained in:
Andrew Ayer
2014-03-22 11:41:18 -07:00
parent 73bf395b3b
commit 2f02161042
3 changed files with 42 additions and 4 deletions
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7
crypto.cpp
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@@ -28,8 +28,8 @@
* as that of the covered work.
*/
#define _BSD_SOURCE
#include "crypto.hpp"
#include "util.hpp"
#include <openssl/aes.h>
#include <openssl/sha.h>
#include <openssl/hmac.h>
@@ -38,7 +38,6 @@
#include <iostream>
#include <cstring>
#include <cstdlib>
#include <arpa/inet.h>
void load_keys (const char* filepath, keys_t* keys)
{
@@ -82,9 +81,9 @@ void aes_ctr_state::process (const AES_KEY* key, const uint8_t* in, uint8_t* out
// first 12 bytes - nonce
// last 4 bytes - block number (sequentially increasing with each block)
uint8_t ctr[16];
uint32_t blockno = htonl(byte_counter / 16);
uint32_t blockno = byte_counter / 16;
memcpy(ctr, nonce, 12);
memcpy(ctr + 12, &blockno, 4);
store_be32(ctr + 12, blockno);
AES_encrypt(ctr, otp, key);
}