Function evlRsaPublic

src/jrd/SysFunction.cpp:3883–3909

}

dsc* evlRsaPublic(thread_db* tdbb, const SysFunction* function, const NestValueArray& args, impure_value* impure)
{
	tomcryptInitializer();

	fb_assert(args.getCount() == 1);

	Request* request = tdbb->getRequest();

	const dsc* value = EVL_expr(tdbb, request, args[0]);
	if (request->req_flags & req_null)	// return NULL if value is NULL
		return NULL;

	DscValue data(tdbb, value, "private key");
	rsa_key rsaKey;
	tomCheck(rsa_import(data.getBytes(), data.getLength(), &rsaKey), Arg::Gds(isc_tom_rsa_import));

	unsigned long outlen = data.getLength();
	UCharBuffer key;
	int cryptRc = rsa_export(key.getBuffer(outlen), &outlen, PK_PUBLIC, &rsaKey);
	rsa_free(&rsaKey);
	tomCheck(cryptRc, Arg::Gds(isc_tom_rsa_export) << "public");

	dsc result;
	result.makeText(outlen, ttype_binary, key.begin());
	EVL_make_value(tdbb, &result, impure);
	return &impure->vlu_desc;
}


int getMaxSaltlen(int hashIdx, rsa_key* key)