Articles liés à Cryptography
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Finality, even very relative, is not attainable in the domain of this art. Besides, good manuals are in existence on this subject, and the titles of some of them will be found at the end of this volume. A cryptographer of considerable experience, however, can always add a few details even to the most complete works of this kind. My object in writing this book is simply to explain what cryptography is, and to recall what it has been from antiquity to the present day; in short, to relate my experiences as a decipherer. The first part of the volume contains a description of the principal systems of cryptography, together with a note on the role played by cryptography in history. In the second part I relate how I succeeded in deciphering a dozen cryptograms of various kinds. In some chapters of this section I give the texts just as they came into my hands; but in the majority -of cases, though preserving the system of cryptography actually employed, I have, on grounds of expediency, substituted an approximate reading for the actual text, and have modified the plan, and even radical features of the narrative, in such a way as to render abortive any attempt at identification and localisation.
This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally-enhance the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Tags: letters letter cipher key line order cryptogram cryptography times number square system column alphabet deciphering frequency message table secret occurs
Finality, even very relative, is not attainable in the domain of this art. Besides, good manuals are in existence on this subject, and the titles of some of them will be found at the end of this volume. A cryptographer of considerable experience, however, can always add a few details even to the most complete works of this kind. My object in writing this book is simply to explain what cryptography is, and to recall what it has been from antiquity to the present day; in short, to relate my experiences as a decipherer. The first part of the volume contains a description of the principal systems of cryptography, together with a note on the role played by cryptography in history. In the second part I relate how I succeeded in deciphering a dozen cryptograms of various kinds. In some chapters of this section I give the texts just as they came into my hands; but in the majority -of cases, though preserving the system of cryptography actually employed, I have, on grounds of expediency, substituted an approximate reading for the actual text, and have modified the plan, and even radical features of the narrative, in such a way as to render abortive any attempt at identification and localisation.
This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally-enhance the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Tags: letters letter cipher key line order cryptogram cryptography times number square system column alphabet deciphering frequency message table secret occurs
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- ÉditeurKessinger Publishing
- Date d'édition2008
- ISBN 10 0548838135
- ISBN 13 9780548838136
- ReliureBroché
- Nombre de pages200
- Evaluation vendeur
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