Breakthrough '32 the Polish solution of the enigma von Deavours, Cipher A.

“… A cryptographic series …”

Solving cipher secrets a collection of weekly articles and problems concerning codes and ciphers that appeared in "Flynn's weekly" [detective fiction weekly] between March 5, 1927... von Ohaver, M. E.

“… A cryptographic series …”

Treatise on cryptography plus many problems in french for the solver von Lange, André, Soudart, E. A.

“… A cryptographic series …”

Cryptoanalysis of shift-register generated stream cipher systems with computer programs and exercises for the student von Barker, Wayne G.

“… A cryptographic series …”

Speech and facsimile scrambling and decoding a basic text on speech scrambling

“… A Cryptographic series …”

The history of codes and ciphers in the United States prior to World War I

“… A cryptographic series …”

The contribution of the cryptographic bureaus in the World War von Gyldén, Yves

“… A cryptographic series …”

War secrets in the ether the exciting true story of German successes in "reading" the codes of The Allied Governments during World War II ; plus 100 challenging crytograms to be so... von Flicke, Wilhelm F.

“… A cryptographic series …”

War secrets in the ether the exciting true story of German successes in "reading" the codes of The Allied Governments during World War II ; plus 100 challenging crytograms to be so... von Flicke, Wilhelm F.

“… A cryptographic series …”

Introduction to the analysis of the data encryption standard (DES) von Barker, Wayne G.

“… A cryptographic series …”

Traffic analysis and the Zendian Problem an exercise in communications intelligence operations von Callimahos, Lambros D.

“… A cryptographic series …”

Pattern words three-letters to eight-letters in length von Carlisle, Sheila

“… A cryptographic series …”

Pattern words nine-letters in length von Carlisle, Sheila

“… A cryptographic series …”

The Voynich manuscript an elegant enigma von D'Imperio, M. E.

“… A cryptographic series …”

The history of codes and ciphers in the United States during World War I

“… A cryptographic series …”

The Riverbank publications

“… A cryptographic series …”

War secrets in the ether the exciting true story of German successes in "reading" the codes of The Allied Governments during World War II ; plus 100 challenging crytograms to be so... von Flicke, Wilhelm F.

“… A cryptographic series …”

Pattern-word list von Lynch, Frederick D.

“… A cryptographic series …”

The history of codes and ciphers in the United States prior to world war I

“… A cryptographic series. …”

Cryptanalysis of the Hagelin cryptograph von Barker, Wayne G.

“… A cryptographic series. …”