: What a declassified Cold War code-breaking manual can teach us about solving ‘impossible’ puzzles #IndiaNEWS The United States National Security Agency – America’s premier signals intelligence

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What a declassified Cold War code-breaking manual can teach us about solving ‘impossible’ puzzles #IndiaNEWS
The United States National Security Agency – America’s premier signals intelligence organisation – recently declassified a Cold War-era document about code-breaking.The 1977 book, written by cryptologist Lambros Callimahos, is the last in a trilogy called Military Cryptanalytics. It is significant in the history of cryptography, as it explains how to break all types of codes, including military codes, or puzzles – which are created solely for the purpose of a challenge.The first two parts of the trilogy were published publicly in the 1980s and covered solving well-known types of the classical cipher.But in 1992, the US Justice Department claimed releasing the third book could harm national security by revealing the NSA’s “code-breaking prowess�?. It was finally released in December last year. Lessons for code-breakersA key part of Callimahop�&������H��]Y�[���وܞ�XYۛ����X��ܚX��H��[X]X��YK���X�����[��HY��Y�H[�ܞY�[��[�[�ۛ�ۈY]��[�[�[Y�[��HY�[��HZY�[�����[��وY��Y��XYH[�H��]��[��x�&����[��X���H^H[�XYHۛ��HY]���]Y�^H[���[����Y][���]�^H]����[��ܙ[[���YݙH�]H[�ܞ[ۈY]�܈�����[��[YK���[[XZ��]Z[�[����H��KX��XZو]��Y�[��][H�X��؞H]K��[��Y�H��^
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