Abstract: An authentication method for authenticating a client with a service over a network of peers, comprises: storing encrypted enrolled authentication data for the client in a storage that is accessible by means of an access privilege; storing a decryption clue for the encrypted enrolled authentication data in a client data block chain; receiving, by the network, authentication information from the client; generating, by a server connected to the client, a decryption key according to a contract involving the decryption clue stored in the client data block chain; receiving, by the network, the encrypted enrolled authentication data from the storage; decrypting, by the network, the encrypted enrolled authentication data using the decryption key to obtain decrypted enrolled authentication data; comparing, by the network, the decrypted enrolled authentication data with the authentication information received from the client for obtaining a match score based on a consensus of the peers of the network; and storing the m

Abstract: An authentication method for authenticating a client with a service over a network of peers, comprises: storing encrypted enrolled authentication data for the client in a storage that is accessible by means of an access privilege; storing a decryption clue for the encrypted enrolled authentication data in a client data block chain; receiving, by the network, authentication information from the client; generating, by a server connected to the client, a decryption key according to a contract involving the decryption clue stored in the client data block chain; receiving, by the network, the encrypted enrolled authentication data from the storage; decrypting, by the network, the encrypted enrolled authentication data using the decryption key to obtain decrypted enrolled authentication data; comparing, by the network, the decrypted enrolled authentication data with the authentication information received from the client for obtaining a match score based on a consensus of the peers of the network; and storing the m

Abstract: A system that automatically formulates recommendations or suggestions for creating indexes on database entities that will improve the overall query performance of a database and/or collection of databases for those queries that target a database entity for which index creation is recommended. A gathering module gathers at least a portion of historical data automatically generated by the database or database collection. An index recommendation module uses the gathered historical data to generate recommended indexing tasks on the basis of estimated greatest impact on overall query performance. An index creation module then initiates an indexing task of the generated set of one or more recommended indexing tasks to thereby create at least one corresponding index on at least one corresponding database entity to thereby improve overall query performance on the database or database collection.