Flashcards
Lecture 1
Flashcards do conjunto (24)
- 1the process of communicating secretly through the use of ciphers and cryptanalysis, the process of cracking or deciphering such secret communications.Cryptography
- 2process which transforms the original information into an unrecognizable form.Encryption
- 3process of converting encoded/encrypted data in a form that is readable and understood by a human or a computer.Decryption
- 4Encryption and Decryption ProcessProcedure
Conversion
Algorithm
Techniques - 5defined as the study of cryptography or cryptanalysis.Cryptology
- 6are the disciplines that relate to cryptography and techniques like microdots and image-word merging help hide information in transit or storage.Cryptology and cryptanalysis
- 7include the regulation of human behaviors like choosing complicated passwords and logging off unused systems.Cryptosystems
- 8–set of procedures that encrypt or decrypt messages to secure computer system communications within devices such as smartphones as well as applications.Cryptographic algorithm
- 9protocol embedded process involves private and public key generation for data encryption/decryption, digital signing, and verification for message authenticationCipher algorithm
- 10This is the original data/message that the algorithm used as input.Plaintext
- 11performs various mathematical operations on this plaintext data to encrypt it.Encryption algorithm
- 12This is the scrambled message that is the result of the encryption algorithm. If intercepted by an untrusted user, it is merely seen as garbled data.Ciphertext
- 13is also input to the encryption algorithm. The encrypted data/message is then sent to the end user, who uses the same secret key to decipher the data.Secret Key
- 14It takes the ciphertext, the secret key, and produces the original data/ message. In simple words, it runs the encryption algorithm in reverse sequence.Decryption algorithm
- 15Cryptosystems that use the same key to encrypt and decrypt messages.Symmetric Ciphers
- 16operates on blocks of a fixed size, usually 64 or 128 bits.Block Cipher
- 17generates a stream of pseudo-random bits, usually either one bit or byte at a time.Stream ciphers
- 18Algorithms create a fixed length of block ciphers with a secret key that the sender uses to encipher data and the receiver uses to decipher data.Data Encryption System (DES) Encryption Algorithm
- 19The Rijndail algorithm that is capable of 256-bit (or more) key to prevent hacker intrusions:Advanced Encryption Standard (AES) Encryption Algorithm
- 20refers to methods used to hide relationships between the plaintext, the ciphertext, and the key.Confusion
- 21serves to spread the influence of the plaintext bits and the key bits over as much of the ciphertext as possible.Diffusion
- 22used in many block ciphers to ensure that the algorithms is invertible.Feistel Network
- 23method in which a message is transformed to conceal its real meaning.Cipher
- 24encrypts a message by printing it in reverse order.Reverse Cipher
Informações
- Descrição
- FlashCards sobre Lecture 1, criado por John Marion Alolino em 19-10-2022.
- Criado por
- John Marion Alolino
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