PPT-Digital Signatures

Slides by Kent Seamons and Tim van der Horst Last Updated Oct 7 2013 Digital Signatures Diagram illustrating how to sign a message Why do we use a oneway hash How does a collision or second preimage attack relate to this. A Quarter . B. inding with Corner Pieces. Rebecca Mieure. Emporia State University. July 2012. Getting Started. As you can see, I have most of my materials and I’m ready to start my project. At this point I really didn’t have a clue as to what I was doing!. Owner. User. Query: X > 6. Message m: Answer to X>6: X1, X5. Sign(m). DB. Authentication: Outsourcing. Owner. User. Query: X > 6. Message m: Answer to X>6: X1, X5. ?. DB. Server. DB. Owner prepares everything that is needed for authenticating any query. David Evans and Samee Zahur. CS4501, Fall 2015. Please pay $1000 to my employee. --. TheBoss. You have money!. Real-life Signatures. Easy to verify. Bank has your signature. Forging unlikely. Legal consequences of forging. Family Inheritance. Me vs. . my brother. My . dad (my Y). Mom’s . dad. (uncle’s Y). Human ancestry. Disease risk. Genomics: . Regions . . mechanisms .  . drugs. Systems. : genes .  combinations  pathways. Customize this template to convince your boss, coworkers or clients that you need e-signatures. Add and delete slides to . make it your own. Look for the bright green arrows for spots that need to be customized. Scott Trainor, Deputy General Counsel, DocuSign. Nic. Wolfe, Corporate Counsel, DocuSign. DOCUSIGN CONFIDENTIAL. Agenda. Primer on Electronic Signatures. State of the Law in California. Exceptions. Case Law Support. Understanding the principles of Key Signatures and how they function in music. Tonality & Key Signatures. When determining what key a piece of music is in you must first refer to the key signature to give you a foundation for the tonal center of the piece. . Microwave. Radiator . Structure Targeting Non-invasive . Breast Cancer . Detection. Arezoo. . Modiri. , Kamran . K. iasaleh. University of Texas at Dallas. This Study’s Goal. Portable, Self-Examine Tool which . Cristina . Onete. || 15/10/2014 || . 2. Why sign?. Amélie. Baptiste. Baptiste is waiting for a message from . Amélie. Message authenticity. How can he make sure it’s really from her?. Message authenticity. Cristina . Onete. || 24/10/2014 || . 2. Amélie. Baptiste. Baptiste is waiting for a message from . Amélie. Message authenticity. How can he make sure it’s really from her?. Prof. David . Singer . Dept. of . Mathematics. Case Western Reserve . University. Cryptographic Services. Privacy (encryption) – You can’t see it. Integrity (signing) – You can’t change it. Digital Signatures. Summary. Contract Law. Signatures & Electronic signatures. Authentication of signatures. Problems with electronic signatures. Mitigating risks with electronic signatures. Contract Law. Written contracts. A digital signature allows the holder of the secret key (the signing key) to sign a document . Everyone who knows the verification key can verify that the signature is valid (correctness). No one can forge a signature even given the verification key even though he is given a signature. for Environmental Documents. ACEC Meeting, August 20, 2020. Jon Collado . jcollado@nd.gov. James . Rath. . jrath@nd.gov. NDDOT is expanding the use of Digital Signatures. COVID-19. Staff Working at Home.