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SY0-501 Recap > Cryptography & PKI > Flashcards

Cryptography & PKI Flashcards

1
Q

What is CSR ?

A

Certificate Signing Request - is submitted to the CA (Certificate Authority) to request a certificate.

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2
Q

What is Key Escrow ?

A

… a Key Storage.

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3
Q

What is the Trust Model ?

A

The trust model automatically updates browsers with a list of certificates for applications.

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4
Q

What is RA ?

A

Registered Authority, verifies requests for certificates and forwards the responses.

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5
Q

Which standard implement the requirements of IEEE 802.11i ?

A

WPA2

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6
Q

What is SAN ?

A

A Subject Alternativ Name is used when a organization has serval websights that need to be identified as being ohnedies by the same organization.

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7
Q

What is FDE ?

A

Full Disk Encryption

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8
Q

What is SDE ?

A

System Data Encryption

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9
Q

What is OSCP ?

A

OSCP is the sucsessor to the deprecated CRL (Certification Revokation List). It compensate the timing problem.

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10
Q

What is PBKDF2 & bcrypt used for ?

A

Key Stretching

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11
Q

Asymethrik Algorithms are …

A

…

  • RSA
  • ECC (Epiliptical Curve Cryptography)
  • Diffie Hellman (Key Exchange Programm)
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12
Q

What is DES ?

A

DES (Data Encryption Standard) - deprecated!

  • 64bit Block Cipher
  • Key size 56bit
  • Rounds 16
  • Symetric
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13
Q

What is 3DES ?

A

3DES (Data Encryption Standard)

  • 64bit Block Cipher
  • Key size 168bit
  • Rounds 16
  • Symetric
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14
Q

What is Blowfish ?

A

Blowfish

  • 64bit Block Cipher
  • Key size 32 - 448bit
  • Rounds 16
  • Symetric
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15
Q

What is AES ?

A

AES (Advanced Encryption Standard)

  • 128bit Block Cipher
  • Key size 128,192 or 256bit
  • Rounds 10,12 or 14
  • Symetric
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16
Q

What is RC4 refer to ?

A

RC4 (River Cipher 4)

  • 1bit Streaming Cipher
  • Key size 40 - 2048bit
  • Rounds 1
  • Symetric
17
Q

In communication what provide nonrepudation ?

A

Digital Signatures

18
Q

What is MD5 ?

A

… an 128bit hash invented 1992 by Ron Rivest.

SY0-501 Recap (6 decks)

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