Zur Kurzanzeige

dc.rights.licenseAll rights reserveden_US
dc.contributor.advisorDuffany, Jeffrey
dc.contributor.authorSantana, Carlos
dc.date.accessioned2022-07-01T11:30:38Z
dc.date.available2022-07-01T11:30:38Z
dc.date.issued2022
dc.identifier.citationSantana, C. (2022). Cracking the Monoalphabetic Substitution Cipher [Unpublished manuscript]. Graduate School, Polytechnic University of Puerto Rico.en_US
dc.identifier.urihttp://hdl.handle.net/20.500.12475/1617
dc.descriptionDesign Project Article for the Graduate Programs at Polytechnic University of Puerto Ricoen_US
dc.description.abstractCryptography is the cornerstone of secure communication. It is the study of techniques by which a message, the plaintext, is transformed into an obfuscated form, the ciphertext. One of the earliest cryptographic techniques used by the Romans is the monoalphabetic substitution cipher. It replaces one letter in a message with another. This approach has one glaring weakness, in that the frequency of letters is preserved in the ciphertext. This renders messages encrypted via monoalphabetic substitution vulnerable to frequency analysis attacks. Frequency analysis is the knowledge of how frequently letters are used in a language. A persistent attacker that has intercepted the message can conduct frequency analysis to “crack” a monoalphabetic substitution cipher. An algorithm can also be created to automate the process and conduct frequency analysis attacks on ciphertext to crack the cipher in minutes, decrypting the message and exposing the plaintext and its contents to an unintended recipient. Key Terms—Cryptography, Decryption, Frequency Analysis, Monoalphabetic Substitution.en_US
dc.language.isoenen_US
dc.publisherPolytechnic University of Puerto Ricoen_US
dc.relation.ispartofComputer Sciences;
dc.relation.ispartofseriesSpring-2022;
dc.relation.haspartSan Juanen_US
dc.subject.lcshCryptographyen_US
dc.subject.lcshPolytechnic University of Puerto Rico--Graduate students--Researchen_US
dc.subject.lcshPolytechnic University of Puerto Rico--Graduate students--Postersen_US
dc.subject.lcshCiphers
dc.titleCracking the Monoalphabetic Substitution Cipheren_US
dc.typeArticleen_US
dc.rights.holderPolytechnic University of Puerto Rico, Graduate Schoolen_US


Dateien zu dieser Ressource

Thumbnail
Thumbnail

Das Dokument erscheint in:

Zur Kurzanzeige