wemosでsha256

概要

wemosでsha256やってみた。

使用したライブラリー

サンプルコード

# include "sha256.h"

void setup() {
	uint8_t key1[] = {0x61, 0x62, 0x63};
	uint8_t key2[] = {0xd3};
	uint8_t key3[] = {0x11, 0xaf};
	BYTE hash[SHA256_BLOCK_SIZE];
	char texthash[2 * SHA256_BLOCK_SIZE + 1];
	Serial.begin(115200);
	Serial.println("");
	Sha256 * sha256Instance0 = new Sha256();
	BYTE text[] = "abc";
	//sha256Instance->update(text, strlen((const char *) text));
	sha256Instance0->update(key1, 3);
	Serial.println("in: abc");
	sha256Instance0->final(hash);
	for (int i = 0; i < SHA256_BLOCK_SIZE; i++)
		sprintf(texthash + 2 * i, "%02X", hash[i]);
	Serial.println(texthash);
	delete sha256Instance0;

	Sha256 * sha256Instance1 = new Sha256();
	sha256Instance1->update(key1, 0);
	Serial.println("in: ");
	sha256Instance1->final(hash);
	for (int i = 0; i < SHA256_BLOCK_SIZE; i++)
		sprintf(texthash + 2 * i, "%02X", hash[i]);
	Serial.println(texthash);
	delete sha256Instance1;

	Sha256 * sha256Instance2 = new Sha256();
	sha256Instance2->update(key2, 1);
	Serial.println("in: d3");
	sha256Instance2->final(hash);
	for (int i = 0; i < SHA256_BLOCK_SIZE; i++)
		sprintf(texthash + 2 * i, "%02X", hash[i]);
	Serial.println(texthash);
	delete sha256Instance2;

	Sha256 * sha256Instance3 = new Sha256();
	sha256Instance3->update(key3, 2);
	Serial.println("in: 11af");
	sha256Instance3->final(hash);
	for (int i = 0; i < SHA256_BLOCK_SIZE; i++)
		sprintf(texthash + 2 * i, "%02X", hash[i]);
	Serial.println(texthash);
	delete sha256Instance3;
}

void loop() {
	delay(10);
}

結果

in: abc
BA7816BF8F01CFEA414140DE5DAE2223B00361A396177A9CB410FF61F20015AD
in:
E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855
in: d3
28969CDFA74A12C82F3BAD960B0B000ACA2AC329DEEA5C2328EBC6F2BA9802C1
in: 11af
5CA7133FA735326081558AC312C620EECA9970D1E70A4B95533D956F072D1F98

以上。