Definition of Ring Signature
Ring signature is one of a digitized signature which can be done by any authorized person or a person which have an access to sign for a specific task or transaction, it was launched in 2001 by ASIACRYPT. This ring signature can be done by any of a key person.
Breif Explanation of Ring Signature
This can be applied to every input of a transaction. There is no need of an owner for their approval all the transactions have been completed in the only presence of key person. For the backup there is a concept of message signature, which have been endorsed by anyone in a particular group.