funstraw/crypto.cc

#include "crypto.h"

#include "nacl/build/instance1/include/amd64/crypto_box.h"
#include "nacl/build/instance1/include/amd64/crypto_secretbox.h"
#include "nacl/build/instance1/include/amd64/randombytes.h"

std::string CryptoBase::BinToHex(const std::string& bin) {
	static const char *hex = "0123456789ABCDEF";
	std::string ret;
	ret.reserve(bin.length() * 2);
	for (size_t i = 0; i < bin.length(); i++) {
		const char c = bin[i];
		ret.push_back(hex[(c & 0xf0) >> 4]);
		ret.push_back(hex[c & 0x0f]);
	}
	return ret;
}

void CryptoBase::GenKey(std::string* key) {
	char buf[crypto_secretbox_KEYBYTES];
	randombytes((unsigned char *)buf, crypto_secretbox_KEYBYTES);
	*key = buf;
}

void CryptoBase::GenKeyPair(std::string* secret_key, std::string* public_key) {
	*public_key = crypto_box_keypair(secret_key);
}