A system, comprising: one or more processors; and memory including instructions executable by the one or more processors to cause the system to: receive a request from a requestor, the request including a pre-generated portion formatted as a uniform resource locator that includes a cryptographic key and an authorization information generated by a first entity, wherein the authorization information includes an electronic signature generated using secret information inaccessible to the requestor; on a condition that the authorization information is determined to indicate authorization by the first entity to fulfill the request, perform one or more operations using the cryptographic key, wherein the one or more operations include access data stored by the first entity in encrypted form and decrypting the data using the cryptographic key and wherein the authorization information indicating authorization by the first entity requires the electronic signature to be valid; and provide a result of the performed one or more operations, wherein providing the result includes transmitting the decrypted data to the requestor. one or more processors; and memory including instructions executable by the one or more processors to cause the system to: receive a request from a requestor, the request including a pre-generated portion formatted as a uniform resource locator that includes a cryptographic key and an authorization information generated by a first entity, wherein the authorization information includes an electronic signature generated using secret information inaccessible to the requestor; on a condition that the authorization information is determined to indicate authorization by the first entity to fulfill the request, perform one or more operations using the cryptographic key, wherein the one or more operations include access data stored by the first entity in encrypted form and decrypting the data using the cryptographic key and wherein the authorization information indicating authorization by the first entity requires the electronic signature to be valid; and provide a result of the performed one or more operations, wherein providing the result includes transmitting the decrypted data to the requestor. receive a request from a requestor, the request including a pre-generated portion formatted as a uniform resource locator that includes a cryptographic key and an authorization information generated by a first entity, wherein the authorization information includes an electronic signature generated using secret information inaccessible to the requestor; on a condition that the authorization information is determined to indicate authorization by the first entity to fulfill the request, perform one or more operations using the cryptographic key, wherein the one or more operations include access data stored by the first entity in encrypted form and decrypting the data using the cryptographic key and wherein the authorization information indicating authorization by the first entity requires the electronic signature to be valid; and provide a result of the performed one or more operations, wherein providing the result includes transmitting the decrypted data to the requestor.