Every time you send a text, pay for groceries with your phone, or use your health site, you are relying on encryption.

The bolding is mine, because if in fact the agency did crack the encryption schemes used for bank transactions (the Times is somewhat unclear on that point), then in doing so it may have solved a math ...

Every time you pay online, your data is protected by a maths problem nobody has proved is unbreakable. Here is what that ...