A system uses a keyboard application to encrypt and decrypt e-mail, messages, and other digital data. By using quantum random number generators, the system has improved data security. Using a quantum random number, an agent (at a sender side) generates an encryption key which is used to automatically encrypt a message. The encryption key is stored at a key server. The encrypted message will be sent by an application using its standard transmission means such as SMTP, SMS, and others. The encrypted message can be automatically unencrypted by using an agent (at a recipient side) and retrieving the key from the key server. The system also provides an optional double encryption, where the message is encrypted with a user-generated password before being encrypted using the encryption key.