Many blockchain use cases require the pinning of on-chain transactions to securely stored documents that cannot be held on-chain, either because they are too large or the information is too sensitive to put into your immutable shared ledger. Kaleido’s Document Exchange was created for these use cases, providing a private store solely for your individual use. We provide the mechanism to generate hashes that uniquely tie an on-chain asset, token, or transaction to off-chain data. If you need an IPFS distributed peer-to-peer file share system where every member of your consortium can access every file, please see our IPFS File Store service.
Kaleido’s Document Exchange allows you to securely forward a copy of a document in your private library to the document store of another participant using our encrypted App2App Messaging Service.
Document Exchange provides APIs for managing the lifecycle of documents* and the ability to connect your private store to an external storage system such as AWS’ S3 or Azure Blob.
The service supports folders to conveniently organize files while allowing you to also address the files by hash regardless of where they are located. Interacting with the service can be done through its graphical user interface, RESTful and socket.io based APIs.
Use the Document Exchange service to securely upload and transfer files within a Kaleido environment. With blockchains being poorly suited for large payloads and sensitive data such as PII, an ancillary file sharing utility that can exist next to the chain provides immense benefit at both a business and security level. Transactions simply need to reference a file’s hash, rather than dealing with the file contents directly.
Any uploaded or received file can be conveniently organized using intuitive folder structures, and persisted in either Kaleido hosted storage or cloud-delegated and user-controlled services such as AWS S3 Buckets or Azure Blob containers.
All transferred data is deterministically hashed, signed, compressed and asymmetrically encrypted in flight using proven public key infrastructure techniques, offering provable guarantees that only the intended recipient can effectively decrypt the packet.
The service leverages the On-Chain Registry service for address look up and certificate functionality, as well as the Kaleido network’s Kafka backbone for high throughput, fault tolerant reliable delivery and transport. Interaction with service is flexible, with support for the in-console graphical user interface, Kaleido RESTful APIs and socket.io connections for reliable event notification.
