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Questions and Answers
Symmetric encryption uses different keys for encryption and decryption.
Symmetric encryption uses different keys for encryption and decryption.
False (B)
Asymmetric encryption is also known as public-key cryptography.
Asymmetric encryption is also known as public-key cryptography.
True (A)
The drawback of symmetric encryption is that it requires a lot of computing power to encrypt and decrypt data.
The drawback of symmetric encryption is that it requires a lot of computing power to encrypt and decrypt data.
False (B)
Encryption is only used to protect data while it is being processed.
Encryption is only used to protect data while it is being processed.
Decoding encrypted data back to plaintext requires the use of a decryption key.
Decoding encrypted data back to plaintext requires the use of a decryption key.
Symmetric encryption is also known as public-key cryptography.
Symmetric encryption is also known as public-key cryptography.
Asymmetric encryption uses two separate keys to encrypt and decrypt data.
Asymmetric encryption uses two separate keys to encrypt and decrypt data.
Symmetric key ciphers are considered more expensive to produce.
Symmetric key ciphers are considered more expensive to produce.
Encryption works by encoding 'ciphertext' into 'plaintext'.
Encryption works by encoding 'ciphertext' into 'plaintext'.
If an unauthorized person gets their hands on the symmetric key, they will be able to decrypt any messages and data sent between the parties.
If an unauthorized person gets their hands on the symmetric key, they will be able to decrypt any messages and data sent between the parties.
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Study Notes
Types of Encryption
- Asymmetric encryption is also known as public-key cryptography.
- Symmetric encryption uses the same key for encryption and decryption.
Drawbacks of Symmetric Encryption
- Requires a lot of computing power to encrypt and decrypt data.
- If an unauthorized person gets the symmetric key, they can decrypt messages and data.
Encryption Process
- Encryption encodes plaintext into ciphertext.
- Decryption requires a decryption key to decode ciphertext back to plaintext.
Key Characteristics
- Symmetric encryption uses one key for encryption and decryption.
- Asymmetric encryption uses two separate keys for encryption and decryption.
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