npfoss

I spent a very long time trying to figure out how to encrypt something with an IPFS peer's ID so that only they can decrypt it (in JavaScript). This gist is to save anyone else from that same time-sink.

Encryption

Say you have an IPFS node as your peer, and their public key is this protobuf-encoded gibberish spit out by IPFS:

// for example from the command: node.id()
let publicKey = 'CAASpgIwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDC7gCqYWtRFmfQ8XZHnFnqB2sdPjprZgDOvz3Hl6NLGPpz95JVqguxQ9XDLnmPPFVOXEdMWohXOmWkQ4AF/6MDLz68q9/+xlvGRrwXE6gbhF15rBV+2A6LtCsbTNnzd7G+YmHMgBNk8UF4zB6Cg/6o2770fqp8khrTG1rwRXX2Cl0z/hEcIMFCAHEQpnmigP1gibtJi6cEjfjHQkqRF8ndCSNyUucgBkWPuJKEFWwAh5AJBVeEbWZngFGQ4jhp14RQ57cHv7COOQk8X3rSkJKMnyURm1iHK635TaJXpjaW8gD13imKUZHFCxS1JLIa3QTh8bk33+kK1jzkPN/XAC2BAgMBAAE='

atoponce

Cryptographic Best Practices

Putting cryptographic primitives together is a lot like putting a jigsaw puzzle together, where all the pieces are cut exactly the same way, but there is only one correct solution. Thankfully, there are some projects out there that are working hard to make sure developers are getting it right.

The following advice comes from years of research from leading security researchers, developers, and cryptographers. This Gist was [forked from Thomas Ptacek's Gist][1] to be more readable. Additions have been added from