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Hereupon Legrand arose, with a grave and stately air, and brought me the beetle from a glass case in which it was enclosed. It was a beautiful scarabaeus, and, at that time, unknown to naturalists—of course a great prize in a scientific point
of view. There were two round black spots near one extremity of the back, and a long one near the other. The scales were exceedingly hard and glossy, with all the appearance of burnished gold. The weight of the insect was very remarkable, and,
taking all things into consideration, I could hardly blame Jupiter for his opinion respecting it.
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Hereupon Legrand arose, with a grave and stately air, and brought me the beetle
from a glass case in which it was enclosed. It was a beautiful scarabaeus, and, at
that time, unknown to naturalists—of course a great prize in a scientific point
of view. There were two round black spots near one extremity of the back, and a
long one near the other. The scales were exceedingly hard and glossy, with all the
appearance of burnished gold. The weight of the insect was very remarkable, and,
taking all things into consideration, I coudd hardly blame Jupiter for his opinion
respecting it.
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Frequency analysis requires only a basic understanding of the statistics of the plaintext language and some problem solving skills, and, if performed by hand, tolerance for extensive letter bookkepping. During world war , both the british and the americans recruited codebreakers by placing crossword puzzles in major newspapers and running contests for who coul solve them the fastest. Several of the ciphers used by axis powers were breakable using frequence analysis, for example, some of the consular ciphers used by the japenese. Mechanical methods of letter counting and statistical analysis generally ibm card type machinery were first used in wwii, possible by the USA army’s sis. Today, the hard work of letter counting and analysis has been replaced by computer software, which can carry out such analysis in seconds. With modern computing power, classical ciphers are unlikely to provide any real protection for confidential data.
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TDQAMQRKY ERELYGCG DQAMCDQG URLY E HEGCK MRNQDGJERNCRW UT JZQ GJEJCGJCKG UT JZQ XLECRJQVJ LERWMEWQ ERN GUOQ XDUHLQO GULPCRW GICLLG, ERN, CT XQDTUDOQN HY ZERN, JULQDERKQ TUD QVJQRGCPQ LQJJQD HUUIIQQXCRW. NMDCRW SUDLN SED CC (SSCC), HUJZ JZQ HDCJCGZ ERN JZQ EOQDCKERG DQKDMCJQN KUNQHDQEIQDG HY XLEKCRW KDUGGSUDN XMBBLQG CR OEFUD RQSGXEXQDG ERN DMRRCRW KURJQGJG TUD SZU KUMLN GULPQ JZQO JZQ TEGJQGJ. GQPQDEL UT JZQ KCXZQDG MGQN HY JZQ EVCG XUSQDG SQDQ HDQEIEHLQ MGCRW TDQAMQRKY ERELYGCG, TUD QVEOXLQ, GUOQ UT JZQ KURGMLED KCXZQDG MGQN HY JZQ FEXERQGQ. OQKZERCKEL OQJZUNG UT LQJJQD KUMRJCRW ERN GJEJCGJCKEL ERELYGCG (WQRQDELLY CHO KEDN JYXQ OEKZCRQDY) SQDQ TCDGJ MGQN CR SSCC, XUGGCHLY HY JZQ MG EDOY'G GCG. JUNEY, JZQ ZEDN SUDI UT LQJJQD KUMRJCRW ERN ERELYGCG ZEG HQQR DQXLEKQN HY KUOXMJQD GUTJSEDQ, SZCKZ KER KEDDY UMJ GMKZ ERELYGCG CR GQKURNG. SCJZ OUNQDR KUOXMJCRW XUSQD, KLEGGCKEL KCXZQDG EDQ MRLCIQLY JU XDUPCNQ ERY DQEL XDUJQKJCUR TUD KURTCNQRJCEL NEJE.
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