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🐛 Change char buffers to unsigned char buffers

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This commit is contained in:
C-3PO 2018-08-07 15:22:07 +02:00
parent 04e8f80b20
commit 6b9b31c2bc
Signed by: c3po
GPG key ID: 62993C4BB4D86F24
11 changed files with 67 additions and 47 deletions
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8
src/utils/decryptUtilities.c
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@ -46,16 +46,16 @@ const uint32_t crc32_tab[] = {
0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
};
uint32_t getCrc(uint32_t old_crc, unsigned char c) {
return (old_crc >> 8) ^ crc32_tab[(old_crc & 0xffU) ^ c];
uint32_t getCrc(uint32_t old_crc, uint8_t c) {
return (old_crc >> 8) ^ crc32_tab[(old_crc & (uint32_t)0xff) ^ c];
}
void updateKeys(uint32_t *key_0, uint32_t *key_1, uint32_t *key_2, unsigned char c) {
void updateKeys(uint32_t *key_0, uint32_t *key_1, uint32_t *key_2, uint8_t c) {
*key_0 = getCrc(*key_0, c);
*key_1 = ((*key_1) + ((*key_0) & (uint32_t)0xffU)) * ((uint32_t)134775813U) + ((uint32_t)1U);
*key_2 = getCrc(*key_2, (*key_1) >> 24);
}
unsigned char decryptByte(uint16_t keyPart) {
uint8_t decryptByte(uint16_t keyPart) {
return (keyPart * (keyPart ^ 1)) >> 8;
}

4
src/utils/decryptUtilities.h
View file

@ -2,6 +2,6 @@
#include <stdint.h>
void updateKeys(uint32_t *key_0, uint32_t *key_1, uint32_t *key_2, unsigned char c);
void updateKeys(uint32_t *key_0, uint32_t *key_1, uint32_t *key_2, uint8_t c);
unsigned char decryptByte(unsigned short keyPart);
uint8_t decryptByte(uint16_t keyPart);

2
src/utils/fileUtilities.c
View file

@ -8,7 +8,7 @@
//Reads the given amount of bytes from the currently open file into the given buffer.
void readBytesIntoBuffer(char* buffer, long numBytes) {
void readBytesIntoBuffer(uint8_t* buffer, long numBytes) {
const size_t result = fread(buffer, 1, numBytes, file.filePointer);
file.offset += result;

4
src/utils/fileUtilities.h
View file

@ -1,5 +1,7 @@
#pragma once
#include <stdint.h>
//A structure to store various information needed when reading from a file.
struct FILE_INFO {
char* name;
@ -12,7 +14,7 @@ struct FILE_INFO file;
//Reads the given amount of bytes from the currently open file into the given buffer.
void readBytesIntoBuffer(char* buffer, long numBytes);
void readBytesIntoBuffer(uint8_t* buffer, long numBytes);
//Closes the currently opened file and opens the next file at its beginning.