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add header guards, move declarations to source file

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This commit is contained in:
Joey Castillo 2021-11-24 12:14:17 -05:00
parent 4a0ff55773
commit 3a420d5c6c
3 changed files with 25 additions and 15 deletions
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5
movement/lib/TOTP-MCU/TOTP.h
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@ -1,3 +1,6 @@
#ifndef TOTP_H_
#define TOTP_H_
#include <inttypes.h>
#include "time.h"
@ -6,3 +9,5 @@ void setTimezone(uint8_t timezone);
uint32_t getCodeFromTimestamp(uint32_t timeStamp);
uint32_t getCodeFromTimeStruct(struct tm time);
uint32_t getCodeFromSteps(uint32_t steps);
#endif // TOTP_H_

16
movement/lib/TOTP-MCU/sha1.c
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@ -14,6 +14,20 @@ uint8_t sha1InitState[] = {
0xf0,0xe1,0xd2,0xc3 // H4
};
union _buffer {
uint8_t b[BLOCK_LENGTH];
uint32_t w[BLOCK_LENGTH/4];
} buffer;
union _state {
uint8_t b[HASH_LENGTH];
uint32_t w[HASH_LENGTH/4];
} state;
uint8_t bufferOffset;
uint32_t byteCount;
uint8_t keyBuffer[BLOCK_LENGTH];
uint8_t innerHash[HASH_LENGTH];
void init(void) {
memcpy(state.b,sha1InitState,HASH_LENGTH);
byteCount = 0;
@ -84,7 +98,7 @@ void writeArray(uint8_t *buffer, uint8_t size){
}
void pad() {
// Implement SHA-1 padding (fips180-2 <20>˜5.1.1)
// Implement SHA-1 padding (fips180-2 <20><EFBFBD>5.1.1)
// Pad with 0x80 followed by 0x00 until the end of the block
addUncounted(0x80);

19
movement/lib/TOTP-MCU/sha1.h
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@ -1,25 +1,16 @@
#ifndef SHA1_H_
#define SHA1_H_
#include <inttypes.h>
#define HASH_LENGTH 20
#define BLOCK_LENGTH 64
union _buffer {
uint8_t b[BLOCK_LENGTH];
uint32_t w[BLOCK_LENGTH/4];
} buffer;
union _state {
uint8_t b[HASH_LENGTH];
uint32_t w[HASH_LENGTH/4];
} state;
uint8_t bufferOffset;
uint32_t byteCount;
uint8_t keyBuffer[BLOCK_LENGTH];
uint8_t innerHash[HASH_LENGTH];
void init(void);
void initHmac(const uint8_t* secret, uint8_t secretLength);
uint8_t* result(void);
uint8_t* resultHmac(void);
void write(uint8_t);
void writeArray(uint8_t *buffer, uint8_t size);
#endif // SHA1_H