A wheel cipher invented by Thomas Jefferson and used to securely encode messages in the late 1700s. CPJ is calling on President Obama to ensure modern versions of encryption remain protected. (Jefferson Cipher Wheel by ideonexus is licensed under CC BY 3.0 US)
A wheel cipher invented by Thomas Jefferson and used to securely encode messages in the late 1700s. CPJ is calling on President Obama to ensure modern versions of encryption remain protected. (Jefferson Cipher Wheel by ideonexus is licensed under CC BY 3.0 US)

CPJ joins call urging White House to protect encryption for journalists