Question

我正在使用这个sh1功能。我想将它存储在char数组或字符串中以进行进一步处理，而不是打印哈希值。

#include "sha1.h"
#include <stdlib.h>

void setup(){
  Serial.begin(9600);

}

void loop() {



  uint8_t *hash;

  Sha1.init();
  Sha1.print("This is a message to hash");
  hash = Sha1.result();

   for (int j=0;j<20;j++)

   Serial.print("0123456789abcdef"[hash>>4]);
   Serial.print("0123456789abcdef"[hash&0xf]);

  }

  Serial.println();


 delay(1000);

}

Answer 1

char digitArray[]= {'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};

char buffer[40];


for (int i = 0; i<40; i+=2){

  buffer[i] = digitArray[(hash[i/2] & 0xF0) >> 4];
  buffer[i+1] = digitArray[(hash[i/2] & 0x0F)];
}

Uint8_to Char数组Arduino sketch

1 个答案: