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  2. Caesar cipher - Wikipedia

    en.wikipedia.org/wiki/Caesar_cipher

    The cipher illustrated here uses a left shift of 3, so that (for example) each occurrence of E in the plaintext becomes B in the ciphertext. In cryptography, a Caesar cipher, also known as Caesar's cipher, the shift cipher, Caesar's code, or Caesar shift, is one of the simplest and most widely known encryption techniques.

  3. List of cryptosystems - Wikipedia

    en.wikipedia.org/wiki/List_of_cryptosystems

    (Top) 1 Private-key ... Private-key cryptosystems use the same key for encryption and decryption. Caesar cipher; Substitution cipher; Enigma machine; Data Encryption ...

  4. Classical cipher - Wikipedia

    en.wikipedia.org/wiki/Classical_cipher

    Some classical ciphers (e.g., the Caesar cipher) have a small key space. These ciphers can be broken with a brute force attack, that is by simply trying out all keys. Substitution ciphers can have a large key space, but are often susceptible to a frequency analysis, because for example frequent letters in the

  5. Cipher - Wikipedia

    en.wikipedia.org/wiki/Cipher

    The Caesar Cipher is one of the earliest known cryptographic systems. Julius Caesar used a cipher that shifts the letters in the alphabet in place by three and wrapping the remaining letters to the front to write to Marcus Tullius Cicero in approximately 50 BC. [citation needed] Historical pen and paper ciphers used in the past are sometimes ...

  6. Substitution cipher - Wikipedia

    en.wikipedia.org/wiki/Substitution_cipher

    At the end of every season 1 episode of the cartoon series Gravity Falls, during the credit roll, there is one of three simple substitution ciphers: A -3 Caesar cipher (hinted by "3 letters back" at the end of the opening sequence), an Atbash cipher, or a letter-to-number simple substitution cipher. The season 1 finale encodes a message with ...

  7. List of cryptographers - Wikipedia

    en.wikipedia.org/wiki/List_of_cryptographers

    Julius Caesar, Roman general/politician, has the Caesar cipher named after him, and a lost work on cryptography by Probus (probably Valerius Probus) is claimed to have covered his use of military cryptography in some detail. It is likely that he did not invent the cipher named after him, as other substitution ciphers were in use well before his ...

  8. Angelina Jolie Gets Asked 'the Most Insane Question.' Here's ...

    www.aol.com/angelina-jolie-gets-asked-most...

    Angelina Jolie balked at a question regarding whether there should be a biopic about her life.. When Jolie, 49, and her Maria director Pablo Larraín spoke with the U.K.'s The Times to promote ...

  9. Cryptography - Wikipedia

    en.wikipedia.org/wiki/Cryptography

    Alphabet shift ciphers are believed to have been used by Julius Caesar over 2,000 years ago. [6] This is an example with k = 3.In other words, the letters in the alphabet are shifted three in one direction to encrypt and three in the other direction to decrypt.

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