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TICSA TruSecure™ ICSA Certified Security Associate Exam TU0-001 by Shawn Porter, Debra Littlejohn Shinder, Mike Chapple

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Digital Signatures

  • Identify key issues of cryptography and be able to explain basic cryptographic methods in use today.

    • Define the uses of digital signatures.

Digital signatures are used to authenticate the sender of a message, and serve as the electronic version of a written signature that can be used to verify the sender of printed correspondence. Along with authentication and nonrepudiation, a digital signature can provide integrity, assuring that the data has not been modified after leaving the sender.

How Digital Signatures Work

Previously, we discussed how you could encrypt a message using someone's public key to provide confidentiality. The public/private key pair can also be used to authenticate the identity of the message sender. In this ...

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