Quantum Digital Signature
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Functionality
Digital Signatures (DS) allow for the exchange of single or multiple bit classical messages from sender to multiple recipients, with a guarantee that the signature has come from a genuine sender. Additionally, it comes with the properties of (i) transferability, i.e. messages with DS can be forwarded from one recipient to another such that DS is verifiable to have come from the original sender, (ii) non-repudiation, i.e at any stage after sending the message to one recipient, sender cannot deny having sent the message and corresponding DS, and (iii) unforgeability, i.e. a dishonest recipient cannot alter or fake the sender's DS and forward it to other recipients successfully.
Use Case
Signing E-Marksheets, Online Transactions
Tags: Multi Party, Quantum Enhanced Classical Functionality, Specific Task
Protocol Library
- Single bit messages
- Multiple-bit messages
- Prepare and Measure Quantum Digital Signature
- Measurement Device Independent Quantum Digital Signature
- No quantum memory
- No authenticated/secure channel
Discussion
(Review Papers)