Williams, who heads global channel partnerships at SandboxAQ, an Alphabet spinout focused on ... services where literally everything they do is encrypted traffic. What we're finding is that ...

In 1854, Sir Charles Wheatstone invented the cipher known as "Playfair," named for his friend Lyon Playfair, first Baron Playfair of St. Andrews, who popularized and promoted the cipher.

Encryption close encryptionFiles that are encrypted ... the one found at the original letter's position in the alphabet plus the value of the key. For example, a key value of three would change ...