Symmetric and asymmetric algorithms, hashing, digital signatures, and public key infrastructure concepts tested across CISSP domains, beyond the architecture overview deck.
41 cards · basic cards · AI-written, checked twice. Edit anything.
- What are the block size and key size of DES?
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64-bit block size, 56-bit effective key size (64 bits with 8 parity bits)- How does 3DES strengthen DES?
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Applies DES encryption three times using two or three different keys, creating effective key lengths of 112 or 168 bits- What are the block size and key size options for AES?
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128-bit block size with key sizes of 128, 192, or 256 bits- How many rounds does AES-128 perform?
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10 rounds- What is a major cryptographic weakness of RC4?
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Keystream bias and weak initial bytes; certain plaintext patterns can leak information about the key- Which asymmetric algorithms base their security on the discrete logarithm problem?
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DSA (Digital Signature Algorithm) and Diffie-Hellman- What is RSA based on?
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The mathematical difficulty of factoring large composite numbers into their prime factors- What mathematical problem does Elliptic Curve Cryptography (ECC) rely on?
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The elliptic curve discrete logarithm problem- What is the primary purpose of Diffie-Hellman?
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To allow two parties to securely establish a shared secret key over an insecure channel- What is the output size of SHA-256?
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256 bits, or 32 bytes- Why is SHA-1 considered cryptographically broken?
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Practical collision attacks have been published; collisions can be found in less than 2^63 operations instead of the theoretical 2^80- Why is MD5 unsuitable for digital signatures?
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Practical collision attacks have been demonstrated; collisions can be computed in seconds on modern hardware- What is a hash collision?
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Two different inputs that produce the same hash output- What does HMAC add to a standard hash function?
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A secret key, allowing the function to provide both message integrity and message authentication- What is preimage resistance in a cryptographic hash function?
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It is computationally infeasible to find any input that produces a specific hash output
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