QUIZ 1 - Basic Cellular Systems Flashcards
Basic Cellular Systems, Security
What length of key does a pure OTP use?
A key the same length as P
How does TDMA divide users?
By time
What is Authentication
Verification of identities
What is Diffusion?
Each plaintext bit and each key bit should effect each ciphertext bit.
What are the main benefits of Symmetric Key cryptography?
Speed and efficiency
What is the industry standard block cipher?
AES
What are the encryption types?
Asymmetric
Symmetric
What is Nonrepudiation?
What does LTE mean?
Long Term Evolution
What process was used to allow multiple simultaneous users in 3G?
WCDMA
What process was used to allow multiple simultaneous users in 2G?
TDMA
What are the main functions of 3GPP?
Communications Management
Radio Resource Management
Mobility Management
What is Cryptography?
Designing systems based on secret writing techniques
What is Plaintext?
Readable text
What is Ciphertext?
Encrypted Text
What is the formula for Encryption?
P * L —> C
What is the formula for decryption?
C * K —-> P
How does FDMA separate users?
By frequency
What security primitives are contained within the CIA Triad ?
Confidentiality
Integrity
Availability
What is Cryptanalysis?
Analyzing cryptographic systems and trying to find weaknesses.
Which hashing algorithm is recommended by NIST?
SHA - 256
What does a hash function do?
What process was used to allow multiple simultaneous users in 1G?
FDMA
