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Module 08: Cryptography Exam ECSS

Alejandro López Villar 30 questions

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  1. 1Recuerda authentication DIGEST siempre usa [blank_start]NONCE[blank_end] que es esa valor random que se intercambian cliente y servidor para asegurar que las sesiones no se roban
    1. ANONCE
  2. 2ENLAZA SIEMPRE CONCEPTOS COMO SIGUE:

    TRUST @ INEGRIDAD
    GENUINE -@ AUTHENTICATION
    1. ATrue
    2. BFalse
  3. 3Objectives of Cryptography

    [blank_start]Confidentiality[blank_end] - Assurance that the information is accessible only to those authorized to
    have access.
    [blank_start]Integrity[blank_end] - The trustworthiness of data or resources in terms of preventing improper and
    unauthorized changes.
    [blank_start]Authentication[blank_end] - Refers to the characteristic of a communication, document, or any data
    that ensures the quality of being genuine.
    [blank_start]Nonrepudiation[blank_end] - Guarantee that the sender of a message cannot later deny having sent
    the message, and that the recipient cannot deny having received the message.
    1. AConfidentiality
    2. BIntegrity
    3. CAuthentication
    4. DNonrepudiation
  4. 4trustworthiness (intregridad) - [blank_start]Integrity[blank_end]
    genuine - [blank_start]Authentication[blank_end]
    1. AIntegrity
    2. BAuthentication
  5. 5Secret Key cryptography es también conocida como :

    [blank_start]Symmetric encryption[blank_end]
    1. AAsymmetric encryption
    2. BSymmetric encryption
  6. 6Tiendes a liarte

    PRIVATE KEY --> [blank_start]SIMETRICA[blank_end]

    PUBLIC --> [blank_start]ASIMÉTRICA[blank_end]
    1. ASIMETRICA
    2. BASIMÉTRICA
  7. 7La criptografia usa [blank_start]algoritmos[blank_end] para cifrar textos
    1. ATokens
    2. Balgoritmos
    3. Chash
  8. 8RSA, MD5,
    SHA, DES, and AES

    son ?

    [blank_start]Algoritmos[blank_end] de encriptamiento
    1. AAlgoritmos
    2. BPKI
  9. 9para ECCS
    [blank_start]CIPHER[blank_end] son algoritmos usados para cifrar un texto; el resultado es un [blank_start]cypher text.[blank_end]

    1. ACIPHER
    2. Bcypher text.
  10. 10CIPHERS TOPOLOGY

    CLASICAL CIPHERS: Most Basic. Operates on alphabets (A-Z).

    [blank_start]Sustitution cipher[blank_end]: Replaces units of plaintext acording to reglular system. EJMPLO: autokey, hill, Gronsfeld, Beale
    [blank_start]Transposition cipher[blank_end]: rearraging letters acording to a regular system. EJEMPLOS: rail Fence, Route, Myszkowski

    MODERN CIPHERS:provide message secrecy, integrity, and authentication of the sender

    2 Tipos:
    - basados en el [blank_start]tipo de llave[blank_end]: simetricos o asimétricos
    - basados en el typo de [blank_start]input data[blank_end]:
    [blank_start]Block Ciphers:[blank_end] operan en grupos de bits de tamaño fijo
    [blank_start]Stream Ciphers:[blank_end] opera sobre cada bit,one at a time, as a layer


    MIRAR NOTA PROFESOR
    1. ASustitution cipher
    2. BTransposition cipher
    3. Ctipo de llave
    4. Dinput data
    5. EBlock Ciphers:
    6. FStream Ciphers:

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Module 08: Cryptography Exam ECSS
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