Introduction to Cryptography: Chapter 30

Same key

Five services

Encrypt at sender site, decrypt at receiver site

<p>Symmetric-key cryptography and asymmetric-key cryptography</p> Signup and view all the answers

<p>Four services</p> Signup and view all the answers

<p>Secrecy or confidentiality</p> Signup and view all the answers

<p>Both the document and the fingerprint</p> Signup and view all the answers

<p>It creates a compressed message that is reversible</p> Signup and view all the answers

<p>A public-key system</p> Signup and view all the answers

<p>Private and public keys</p> Signup and view all the answers

<p>The same key is used by the sender for encryption and the receiver for decryption. The key is shared.</p> Signup and view all the answers

<p>Message Confidentiality, Message Integrity, Message Authentication, Message Nonrepudiation, Entity Authentication</p> Signup and view all the answers

<p>Message must be encrypted at the sender site and decrypted at the receiver site using either symmetric-key cryptography or asymmetric-key cryptography.</p> Signup and view all the answers

<p>The message must be encrypted at the sender site and decrypted at the receiver site using either symmetric-key cryptography or asymmetric-key cryptography.</p> Signup and view all the answers

<p>Symmetric-key cryptography and Asymmetric-key cryptography</p> Signup and view all the answers

<p>We cannot use a lossless compression method as a hashing function because it creates a reversible compressed message.</p> Signup and view all the answers

<p>A checksum method does not meet all the criteria for a hashing function, even though it is not reversible.</p> Signup and view all the answers

<p>A hash function can detect any modification in the message but cannot provide authentication.</p> Signup and view all the answers

<p>A digital signature proves the authenticity of the sender by ensuring that the message comes from the intended sender.</p> Signup and view all the answers

<p>A digital signature requires a public-key system to securely authenticate the sender's identity.</p> Signup and view all the answers