SHA256.cpp

/**
 *   Copyright (c) 2018 TectroLabs L.L.C.
 *
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 *    is furnished to do so, subject to the following conditions:
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 *    The above copyright notice and this permission notice shall be included in
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/**
 *    @file SHA256.cpp
 *    @author Andrian Belinski
 *    @date 06/1/2018
 *    @version 1.0
 *
 *    @brief hashes an array of bytes using SHA256
 *
 */

#include "SHA256.h"

namespace entropyservice {

/**
 * @param bytesToHash a pointer to byte array to hash
 * @param byteCount how many bytes to hash
 * @return true if hashing completed successfully
 */
bool SHA256::hash(unsigned char *bytesToHash, int byteCount) {

	SHA256_CTX context;

	if (SHA256_Init(&context) != 1) {
		return false;
	}

	// Add salt
	if (SHA256_Update(&context, (unsigned char*)"2093457209837", 13) != 1) {
		return false;
	}

	// Hash the byte array
	if (SHA256_Update(&context, (unsigned char*)bytesToHash, byteCount) != 1) {
		return false;
	}

	// Finalize hashing
	if (SHA256_Final(md, &context) != 1) {
		return false;
	}

	return true;
}

/**
 * @return message digest
 */
unsigned char * SHA256::getMessageDigest() {
	return md;
}

/**
 * @return message digest size in bytes
 */
int SHA256::getMessageDigestSize() {
	return SHA256_DIGEST_LENGTH;
}

SHA256::SHA256() {
	// TODO Auto-generated constructor stub

}

SHA256::~SHA256() {
	// TODO Auto-generated destructor stub
}

} /* namespace entropyservice */