Search results
Results from the WOW.Com Content Network
While some systems reuse the same seven pitches for multiple letters (e.g., the pitch A can represent the letters A, H, O, or V), [10] most algorithms combine these pitches with other musical attributes to achieve a one-to-one mapping. Perhaps the earliest documented music cipher is found in a manuscript from 1432 called "The Sermon Booklets of ...
It altereth the sound of all the vowells, euen quite thorough one or mo consonants as, máde, stéme, éche, kínde, strípe, óre, cúre, tóste sound sharp with the qualifying E in their end: whereas, màd, stèm, èch, frind, strip, or, cut, tost, contract of tossed sound flat without the same E, And therefor the same loud and sharp sound in ...
Physically extract the letter tab found at position zenith-1 (i.e., one counter-clockwise position past the zenith) taking it out of the disk's alphabet, temporarily leaving an unfilled 'hole'. Shift all letter tabs in positions zenith-2 (advancing counter-clockwise) down to and including the nadir (zenith-13), moving them in unison one ...
Under this scheme the vowel sounds in the text are matched to the vowel sounds of the solmization syllables of Guido of Arezzo (where 'ut' is the root, which we now call 'do'). Thus the Latin name of the dedicatee 'Hercules Dux Ferrarie' ( Ercole d'Este, Duke of Ferrara ) becomes re-ut-re-ut-re-fa-mi-re, which translates as D-C-D-C-D-F-E-D in ...
The method creates a chain-reaction when a letter is decrypted, this means that after decrypting a word, the letters of that word can be used to decrypt other words. [9] Depending on the type of cipher, a brute force attack method can be used, which attempts to use all possible keys for the encryption. [10]
Eve could use frequency analysis to help solve the message along the following lines: counts of the letters in the cryptogram show that I is the most common single letter, [2] XL most common bigram, and XLI is the most common trigram. e is the most common letter in the English language, th is the most common bigram, and the is the
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. It is a type of substitution cipher in which each letter in the plaintext is replaced by a letter some fixed number of positions down the alphabet.
Other slight variants, also incorporating seriation, are described in Schick (1987) [10] and David (1996). [11]The two-square cipher is not described in some other 20th century popular cryptography books e.g. by Helen Fouché Gaines (1939) or William Maxwell Bowers (1959), although both describe the Playfair cipher and four-square cipher.