KGB General Solomatin Interview

Boris Solomatin

One of the most famous and damaging spy cases in the US was the John Walker Spy Ring. Walker, a naval communications specialist, walked into the Soviet Embassy in Washington in 1968 and offered to sell Navy secrets for cash to the Russians.

Over a period of 17 years, he provided the Russians with crucial information about cryptographic systems, their technical drawing and passed them the secret daily key sheets of those machines. Among them were the Navy KL-47 offline cipher machine (compatible with the KL-7), and the KW-7 online teletype cipher machine. All this time, Soviet Intelligence could read all encrypted message traffic from the US Navy and Army.

His game ended in 1985, when a deaddrop was observed by FBI agents. Walker was imprisoned for life. This was not the end of the story! US intelligence had to make a damage assessment. What did the Russians knew and what damage caused this to US security? Well, to be short, Walker's work was devastating and the Russians knew the most sensitive military secrets.

But who can explain this better than retired KGB General Boris Solomatin, responsible for handling the Walker Spy Ring. Pete Earley's very interesting interview with Solomatin (pdf incl. pictures) shows how false confidence in crypto systems and unpredictable people can damage a nation's security. It's a great opportunity to hear the Russian side of the story.

USS Pueblo, John Walker and KGB (pdf) by Robert Derenčin is a good overview of Walker's spying and the damage he caused. The U.S. Naval Institute published Walker's story in The Navy's Biggest Betrayal. Another excellent paper is Analysis of the Systemic Security Weaknesses of the U.S. Navy Fleet Broadcasting System, 1967-1974, as Exploited by CWO John Walker (pdf).

More about John Walker at this post. Solomatin (Соломатин Борис Александрович) died December last year. You can find Solomatin's bio on this SVR page.

Crypto Machines Timeline

When I visited Bletchley Park last weekend I saw John Alexander's 'Enigma and Friends' exhibition. He created a nice banner, a large timeline with all the important cipher machines. Since there's no equivalent on the web, I decided to create a page with such a timeline.

On this timeline you can follow the development of cipher machines. The machines are presented with a picture and a brief description, some history and a few links to more pictures or detailed information. This is not a complete list! There were many more cipher machines, but this timeline gives a good view on the development of these machines in the 20th century. Visit the Cipher Machines Timeline at my website.