ISBN: 9786130354688

High Quality Content by WIKIPEDIA articles! The Two-square cipher is a manual symmetric encryption technique. It was developed to ease the cumbersome nature of the large encryption/decryp… Altro …

High Quality Content by WIKIPEDIA articles! The Two-square cipher is a manual symmetric encryption technique. It was developed to ease the cumbersome nature of the large encryption/decryption matrix used in the four-square cipher while still being slightly stronger than the Playfair cipher.The technique encrypts pairs of letters (digraphs), and thus falls into a category of ciphers known as polygraphic substitution ciphers. This adds significant strength to the encryption when compared with monographic substitution ciphers which operate on single characters. The use of digraphs makes the two-square technique less susceptible to frequency analysis attacks, as the analysis must be done on 676 possible digraphs rather than just 26 for monographic substitution. The frequency analysis of digraphs is possible, but considerably more difficult - and it generally requires a much larger ciphertext in order to be useful. Bücher / Naturwissenschaften, Medizin, Informatik & Technik / Mathematik<

ISBN: 9786130354688

High Quality Content by WIKIPEDIA articles! The Two-square cipher is a manual symmetric encryption technique. It was developed to ease the cumbersome nature of the large encryption/decryp… Altro …

High Quality Content by WIKIPEDIA articles! The Two-square cipher is a manual symmetric encryption technique. It was developed to ease the cumbersome nature of the large encryption/decryption matrix used in the four-square cipher while still being slightly stronger than the Playfair cipher.The technique encrypts pairs of letters (digraphs), and thus falls into a category of ciphers known as polygraphic substitution ciphers. This adds significant strength to the encryption when compared with monographic substitution ciphers which operate on single characters. The use of digraphs makes the two-square technique less susceptible to frequency analysis attacks, as the analysis must be done on 676 possible digraphs rather than just 26 for monographic substitution. The frequency analysis of digraphs is possible, but considerably more difficult - and it generally requires a much larger ciphertext in order to be useful. Bücher, Hörbücher & Kalender / Bücher / Sachbuch / Naturwissenschaften / Mathematik<

2010, ISBN: 9786130354688

Erscheinungsdatum: 02/2010, Medium: Taschenbuch, Einband: Kartoniert / Broschiert, Titel: Two-square cipher, Titelzusatz: Encryption, Symmetric-Key Algorithm, Playfair Cipher, Frequency A… Altro …

Erscheinungsdatum: 02/2010, Medium: Taschenbuch, Einband: Kartoniert / Broschiert, Titel: Two-square cipher, Titelzusatz: Encryption, Symmetric-Key Algorithm, Playfair Cipher, Frequency Analysis, Four-Square Cipher, Cryptanalysis, Outline of Cryptography, Substitution Cipher, Redaktion: Surhone, Lambert M. // Timpledon, Miriam T. // Marseken, Susan F., Verlag: Betascript Publishers, Sprache: Englisch, Rubrik: Mathematik // Sonstiges, Seiten: 68, Informationen: Paperback, Gewicht: 118 gr, Verkäufer: averdo Belletristik<

2010, ISBN: 6130354681

Kartoniert / Broschiert, mit Schutzumschlag neu, [PU:Betascript Publishers]

2010, ISBN: 6130354681

edizione con copertina rigida

Encryption, Symmetric-Key Algorithm, Playfair Cipher, Frequency Analysis, Four-Square Cipher, Cryptanalysis, Outline of Cryptography, Substitution Cipher - Buch, gebundene Ausgabe, 68 S.,… Altro …

Encryption, Symmetric-Key Algorithm, Playfair Cipher, Frequency Analysis, Four-Square Cipher, Cryptanalysis, Outline of Cryptography, Substitution Cipher - Buch, gebundene Ausgabe, 68 S., Beilagen: Paperback, Erschienen: 2010 Betascript Publishers<