The adventure of dancing men sherlock holmes


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The adventure of dancing men sherlock holmes

  1. 1.  The Adventure of the Dancing Men", one of the 56 Sherlock Holmes short stories written by British author Sir Arthur Conan Doyle, is one of 13 stories in the cycle collected as The Return of Sherlock Holmes. Doyle ranked "The Adventure of the Dancing Men" third in his list of his twelve favorite Holmes stories. This is one of only two Sherlock Holmes short stories where Holmes' client dies after seeking his help. The other is "The Five Orange Pips", part of The Adventures of Sherlock Holmes
  2. 2. Hilton cubitt,squire,has come to sherlock holmes for help in solving a disturbing mystery. Cubitt has found several messages of coded letters drawn in the form of dancing men .
  3. 3.  The messages are undecipherable to him but extremly disturbing to his American wife with a typical brilliance Sherlock Holmes quickly realises the , the danger the messages convey , and he and Watson travel by rail To Cubitt estate.But is too late. Cubitt has been found killed and it is believe that Elsie shot him, although cannot be proved bcause she herself is conscious near death’s door working with the local inspector ,Holmes sets a trap for an american men renting a room at a nearby farm . Holmes must find the truth , Elsie may pay the consequences… if she leaves
  4. 4.  In cryptography, a cipher (or cypher) is an algorithm for performing encryption or decryption—a series of well-defined steps that can be followed as a procedure. An alternative, less common term is encipherment. To encipher or encode is to convert information from plain text into cipher or code. In non-technical usage, a 'cipher' is the same thing as a 'code'; however, the concepts are distinct in cryptography. Inclassical cryptography, ciphers were distinguished from codes.
  5. 5.  Codes generally substitute different length strings of characters in the output, whilst ciphers generally substitute the same number of characters as are input.  When using a cipher the original information is known as plaintext, and the encrypted form as ciphertext. The ciphertext message contains all the information of the plaintext message, but is not in a format readable by a human or computer without the proper mechanism to decrypt it.
  6. 6.  The operation of a cipher usually depends on a piece of auxiliary information, called a key (or, in traditional NSA parlance, a cryptovariable). The encrypting procedure is varied depending on the key, which changes the detailed operation of the algorithm. A key must be selected before using a cipher to encrypt a message. Without knowledge of the key, it should be extremely difficult, if not impossible, to decrypt the resulting ciphertext into readable plaintext.
  7. 7.  VERSUS CODES Within technical discussions, however, the words "code" and "cipher" refer to two different concepts. However, codes have a variety of drawbacks, including susceptibility to cryptanalysis and the difficulty of managing a cumbersome codebook. Because of this, codes have fallen into disuse in modern cryptography, and ciphers are the dominant technique.
  8. 8. Substitution of single letters separately— simple substitution—can be demonstrated by writing out the alphabet in some order to represent the substitution. This is termed a substitution alphabet. The cipher alphabet may be shifted or reversed (creating the Caesarand Atbash ciphers, respectively) or scrambled in a more complex fashion, in which case it is called a mixed alphabet or deranged alphabet.
  9. 9.  Traditionally, mixed alphabets may be created by first writing out a keyword, removing repeated letters in it, then writing all the remaining letters in the alphabet in the usual order.  Using this system, the keyword "zebras" gives us the following alphabets:  Plaintext alphabet:ABCDEFGHIJKLMNOPQRSTUVWXYZCiph ertext alphabet:ZEBRASCDFGHIJKLMNOPQTUVWXYA message of  flee at once. we are discovered! enciphers to  SIAA ZQ LKBA. VA ZOA RFPBLUAOAR!
  10. 10.  An early attempt to increase the difficulty of frequency analysis attacks on substitution ciphers was to disguise plaintext letter frequencies by homophony. In these ciphers, plaintext letters map to more than one ciphertext symbol. Usually, the highest- frequency plaintext symbols are given more equivalents than lower frequency letters. In this way, the frequency distribution is flattened, making analysis more difficult.
  11. 11.  Sherlock Holmes breaks a substitution cipher in "The Adventure of the Dancing Men".  The Al Bhed language in Final Fantasy X is actually a substitution cipher, although it is pronounced phonetically (i.e. "you" in English is translated to "oui" in Al Bhed, but is pronounced the same way that "oui" is pronounced in French).  The Minbari's alphabet from the Babylon 5 series is a substitution cipher from English.  The language in Starfox Adventures: Dinosaur Planet spoken by native Saurians and Krystal is also a substitution cipher of the English alphabet.
  13. 13. AT ELRIGE’S
  14. 14. COME ELSIE
  15. 15. NEVER
  18. 18. Sri SURESH Sir