public bool WriterLogin(WriterDto writerLoginDto) { using (var hmac = new System.Security.Cryptography.HMACSHA512()) { var writer = _writerService.fetchWriterList(); foreach (var item in writer) { if (HashingHelper.WriterVerifyPasswordHash(writerLoginDto.WriterPassword, item.WriterPasswordHash, item.WriterPasswordSalt)) { return(true); } } return(false); } }