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Japanese naval codes

Known as: JN-25, JN-25b 
The vulnerability of Japanese naval codes and ciphers was crucial to the conduct of World War II, and had an important influence on foreign relations… 
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Related topics

Related topics

13 relations
Battle of MidwayBlack-bag cryptanalysisCipherEnigma machine

Broader (1)

History of cryptography

Papers overview

Semantic Scholar uses AI to extract papers important to this topic.
2014
2014
Using Common Book Groups
By late 1941, sufficiently many book groups in the JN-25B code book had been found to enable the compilation of an accurate list… 
2014
2014
JN-25 and Its Cryptanalysis
The JN-25 series of IJN operational codes was the most important source of Allied Sigint throughout the Pacific War. From early… 
2014
2014
The Scanning Distribution
Increases in the complexity of the JN-25 cipher systems from 1939 to 1943 must have suggested that developing new techniques in… 
2012
2012
The Flaw in the JN-25 Series of Ciphers, II
Abstract From 1939 to 1945 the Imperial Japanese Navy made heavy use of a series of additive cipher systems generically named JN… 
2006
2006
Breaking of Japanese Naval Codes: Pre-Pearl Harbor to Midway
Abstract This is the text of a speech by CAPT Forrest R. “Tex” Biard (Ret) given to the National Cryptologic Museum Foundation on… 
2006
2006
The 1944 Naval BRUSA Agreement and its Aftermath
Abstract Sets out the background to the January 1944 BRUSA Agreement between the US Navy and the British Government Code and… 
2005
2005
THE SECRECY OF PEARL HARBOR
Review
2003
Review
2003
FOREKNOWLEDGE OF PEARL HARBOR? NO!: THE STORY OF THE U. S. NAVY'S EFFORTS ON JN-25B
In their revisionist efforts to establish a “foreknowledge” of the planned attack on Pearl Harbor as a basis for suspicions that… 
2000
2000
CLOSING THE BOOK ON PEARL HARBOR
ABSTRACT Recent attempts to resuscitate well-worn conspiracy theories concerning the Pearl Harbor attack are based on selective… 
1998
1998
Setting the Record Straight on Midway
A popular rumor about the Japanese defeats at the Battles of Coral Sea and Midway is that codebooks for JN-25 (Angosho D) had… 
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