hashmap
hashmap server is a light-weight cryptographically signed public key value store inspired by JWT and IPNS.
This is a playground for interacting with a prototype of hashmap server that lives at prototype.hashmap.sh. This site uses the hashmap javascript client.
NOTE: This project is in early alpha. This code has not been audited or peer-reviewed and should be considered an experiment.
Post
Configure a Private Key
To post to hashmap server, generate or paste a base64 encoded ed25519 private key. This private key is used to sign the submitted data. The public key derived from this private key is also submitted in the paylod.
Set a TTL
Key-value pairs on hashmap server are ephemeral. A submitted payload allows a TTL expressed in seconds with a value between 0 and 604800 (one week). This playground allows values between 15 seconds and two hours.
ttl: 15 minutes
Write a Message
Your message is submitted as part of the signed data in a submission payload. Hashmap server restricts the submitted message to be no larger than 512 bytes.
Get
Request a Payload by Multihash
Valid payload values are stored in hashmap in the same form they are submitted. This allows both the client and the server to analyze the payload for integrity. The key for a payload is the blake2b-256 multihash of its ed25519 public key.
Inspect the Payload
A valid payload contains a json object with keys for data, signatue, and pubkey with each of their values base64 encoded. Once decoded, data is itself a json object that contains a base64 encoded message as well as the metadata such as timestamp, sigMethod, version, and ttl. Message can be any valid base64 encoded bytes, this isn't restricted to only string output, though string output is assumed for this playground demonstration.