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_______encryption uses the same key to encrypt and decrypt.
Symmetric
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________encryption solves the key distribution problem.
Asymmetric
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Which type of encryption is slower than the other?
Asymmetric is 100 times slower than Symmetric
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_______ encrypt one character of data at a time.
Stream Ciphers
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What are the two types of Ciphers?
Block and Stream
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AES
what is the block size and key size
- Advanced Encryption Standard
- block size 128 key size 128, 192, and 256
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____ is the concept that a sender cannot deny sending a message.
Non-repudiation
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____ provides integrity to a message being sent.
Hashing
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_____ and ____ are the most common hashing algorithms.
MD5 and SHA-1
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____ Provides Authenticity to Hashed messages.
HMAC-Hashed based Message Authentication Code
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Explain the following:
MD5
SHA-1
SHA-2
HMAC-MD5
HMAC-SHA1
- MD5-creates 128-bit hashes
- SHA-1-creates 160-bit hashes
- SHA-2 creates 224-,256-,384-, or 512-bit hashes
- HMAC-MD5- creates 128-bit hashes while authenticating
- HMAC-SHA1- creates 160-bit hashes while authenticating
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____ is a symmetric block cipher that was widely used for many years, dating back to 1970's. It encrypts data in 64-bit blocks.
DES (Data Encryption Standard)
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_____is a strong symmetric block cipher that encrypts data in 128-bit blocks.
AES (Advanced Encryption Standard)
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What are some uncommonly used Hashing Algorithms
RIPEMD, LANMAN, NTLM
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Cryptography provides 4 essential services which are ______?
- Confidentiality
- Integrity
- Authentication
- Non-repudiation
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_____ is considered the fastest of the symmetric algorithms.
Blowfish
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IDEA
- International Data Encryption Algorithm
- 64-bit block cipher
- 128-bit key length
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