TOP SECRET COMMUNICATIONS OF WWII Unbreakable Encryption SIGSALY-SIGTOT Book For Sale

TOP SECRET COMMUNICATIONS OF WWII Unbreakable Encryption SIGSALY-SIGTOT Book

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TOP SECRET COMMUNICATIONS OF WWII Unbreakable Encryption SIGSALY-SIGTOT Book:
$29.99

Approx 8 1/2" x 11" hardcover book has approx 200 pages. Published 2002. Pre-owned. From smoke free home. Binding tight.

TELLS STORY OF TWO OF THE MOST IMPORTANT CRYPTOLOGIC SYSTEMS OF WWII.

Unbreakable encryption for secret high level conferences. SIGSALY - THE GREEN HORNET Secure telephone conferences. SIGTOT Teletype Cryptographic System, The beginning of the Digital age. By Donald Mehl.

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