A tiny REST-ful datastore for blobs using Node.js and MySQL. When storing a blob, one can (optionally) send an ECDSA public key to protect it from being modified.
Looks up a key and returns it, or an empty response if nothing is there.
Sets key, checking sig if it already exists and has a pub_key set.
ascii encoded blob to store
base64 encoded signature of sha256 hash of blob. required if a row with that key already exists and has a pub_key.
base64 encoded public key to replace existing one