こんにちはすべて私はC世界に新しいので、ここに私の質問です。Arduino C/C++変更関数名
私は次のようになります。次の.hと.cppのファイルがあります。
.H:
#ifndef Sha256_h
#define Sha256_h
#include "sha256_config.h"
#if defined(SHA256_LINUX)
class Sha256Class
#else
class Sha256Class : public Print
#endif
{
public:
union _buffer {
uint8_t b[BLOCK_LENGTH];
uint32_t w[BLOCK_LENGTH/4];
};
union _state {
uint8_t b[HASH_LENGTH];
uint32_t w[HASH_LENGTH/4];
};
void init(void);
void initHmac(const uint8_t* secret, int secretLength);
uint8_t* result(void);
uint8_t* resultHmac(void);
#if defined(SHA256_LINUX)
virtual size_t write(uint8_t);
size_t write_L(const char *str);
size_t write_L(const uint8_t *buffer, size_t size);
size_t print(const char* str);
double millis();
#else
virtual size_t write(uint8_t);
using Print::write;
#endif
private:
void pad();
void addUncounted(uint8_t data);
void hashBlock();
uint32_t ror32(uint32_t number, uint8_t bits);
_buffer buffer;
uint8_t bufferOffset;
_state state;
uint32_t byteCount;
uint8_t keyBuffer[BLOCK_LENGTH];
uint8_t innerHash[HASH_LENGTH];
#if defined(SHA256_LINUX)
timeval tv;
#endif
};
extern Sha256Class Sha256;
#endif
た.cpp:
#include "sha256.h"
uint32_t sha256K[] PROGMEM = {
0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5,0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5,
0xd807aa98,0x12835b01,0x243185be,0x550c7dc3,0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174,
0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc,0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da,
0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7,0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967,
0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13,0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85,
0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3,0xd192e819,0xd6990624,0xf40e3585,0x106aa070,
0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5,0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3,
0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208,0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2
};
#define BUFFER_SIZE 64
uint8_t sha256InitState[] PROGMEM = {
0x67,0xe6,0x09,0x6a,
0x85,0xae,0x67,0xbb,
0x72,0xf3,0x6e,0x3c,
0x3a,0xf5,0x4f,0xa5,
0x7f,0x52,0x0e,0x51,
0x8c,0x68,0x05,0x9b,
0xab,0xd9,0x83,0x1f,
0x19,0xcd,0xe0,0x5b
};
void Sha256Class::init(void) {
memcpy_P(state.b,sha256InitState,32);
byteCount = 0;
bufferOffset = 0;
}
uint32_t Sha256Class::ror32(uint32_t number, uint8_t bits) {
return ((number << (32-bits)) | (number >> bits));
}
void Sha256Class::hashBlock() {
uint8_t i;
uint32_t a,b,c,d,e,f,g,h,t1,t2;
a=state.w[0];
b=state.w[1];
c=state.w[2];
d=state.w[3];
e=state.w[4];
f=state.w[5];
g=state.w[6];
h=state.w[7];
for (i=0; i<64; i++) {
if (i>=16) {
t1 = buffer.w[i&15] + buffer.w[(i-7)&15];
t2 = buffer.w[(i-2)&15];
t1 += ror32(t2,17)^ror32(t2,19)^(t2>>10);
t2 = buffer.w[(i-15)&15];
t1 += ror32(t2,7)^ror32(t2,18)^(t2>>3);
buffer.w[i&15] = t1;
}
t1 = h;
t1 += ror32(e,6)^ror32(e,11)^ror32(e,25);
t1 += g^(e & (g^f));
t1 += pgm_read_dword(sha256K+i);
t1 += buffer.w[i&15];
t2 = ror32(a,2)^ror32(a,13)^ror32(a,22);
t2 += ((b & c) | (a & (b | c)));
h=g; g=f; f=e; e=d+t1; d=c; c=b; b=a; a=t1+t2;
}
state.w[0] += a;
state.w[1] += b;
state.w[2] += c;
state.w[3] += d;
state.w[4] += e;
state.w[5] += f;
state.w[6] += g;
state.w[7] += h;
}
void Sha256Class::addUncounted(uint8_t data) {
buffer.b[bufferOffset^3] = data;
bufferOffset++;
if (bufferOffset == BUFFER_SIZE) {
hashBlock();
bufferOffset = 0;
}
}
size_t Sha256Class::write(uint8_t data) {
++byteCount;
addUncounted(data);
return 1;
}
void Sha256Class::pad() {
addUncounted(0x80);
while (bufferOffset != 56) addUncounted(0x00);
addUncounted(0);
addUncounted(0);
addUncounted(0);
addUncounted(byteCount >> 29);
addUncounted(byteCount >> 21);
addUncounted(byteCount >> 13);
addUncounted(byteCount >> 5);
addUncounted(byteCount << 3);
}
uint8_t* Sha256Class::result(void) {
pad();
for (int i=0; i<8; i++) {
uint32_t a,b;
a=state.w[i];
b=a<<24;
b|=(a<<8) & 0x00ff0000;
b|=(a>>8) & 0x0000ff00;
b|=a>>24;
state.w[i]=b;
}
return state.b;
}
#define HMAC_IPAD 0x36
#define HMAC_OPAD 0x5c
uint8_t keyBuffer[BLOCK_LENGTH];
uint8_t innerHash[HASH_LENGTH];
void Sha256Class::initHmac(const uint8_t* key, int keyLength) {
uint8_t i;
memset(keyBuffer,0,BLOCK_LENGTH);
if (keyLength > BLOCK_LENGTH) {
init();
for (;keyLength--;) write(*key++);
memcpy(keyBuffer,result(),HASH_LENGTH);
} else {
memcpy(keyBuffer,key,keyLength);
}
init();
for (i=0; i<BLOCK_LENGTH; i++) {
write(keyBuffer[i]^HMAC_IPAD);
}
}
uint8_t* Sha256Class::resultHmac(void) {
uint8_t i;
memcpy(innerHash,result(),HASH_LENGTH);
init();
for (i=0; i<BLOCK_LENGTH; i++) write(keyBuffer[i]^HMAC_OPAD);
for (i=0; i<HASH_LENGTH; i++) write(innerHash[i]);
return result();
}
#if defined(SHA256_LINUX)
size_t Sha256Class::write_L(const char *str){
if (str == NULL) return 0;
return write_L((const uint8_t *)str, strlen(str));
}
size_t Sha256Class::write_L(const uint8_t *buffer,size_t size){
size_t n = 0;
while (size--){
n +=write(*buffer++);
}
return n;
}
size_t Sha256Class::print(const char *str){
return write_L(str);
}
double Sha256Class::millis(){
gettimeofday(&tv, NULL);
return (tv.tv_sec + 0.000001 * tv.tv_usec);
}
#endif
Sha256Class Sha256;
そして、どのように私が呼び出しに取り掛かるをそれは私のArduinoコードからです:
uint8_t* hash;
uint32_t a;
unsigned long ms;
Serial.println("Test: RFC4231 4.2");
Serial.println("Expect:b0344c61d8db38535ca8afceaf0bf12b881dc200c9833da726e9376c2e32cff7");
Serial.print("Result:");
ms = micros();
Sha256.initHmac(hmacKey1,20);
Sha256.print("Hi There");
printHash(Sha256.resultHmac());
Serial.print(" Hash took : ");
Serial.print((micros() - ms));
Serial.println(" micros");
Serial.println();
私がしたいことは、Sha256.print〜Sha256.Msgの名前を変更することです。私はクラスSha256Classの名前を変更しようとしました:public Print to class Sha256Class:public Msgしかし、それは動作しませんでした。私はというプリントをという名前で参照し、それをという名前に変更しました。メッセージも同様に動作しません。
になりたかったとしてだけで関数を呼び出します**最高の解決策を示すことは、印刷機能を実装したままにして、同じことをする2番目の方法を作成することだけです**。 – StealthRT
それだけでいいはずです。私はもう少しあなたのオブジェクト指向のプログラミングに取り組むことをお勧めします。 –