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Alternative to #177 The way this works is: Client: - Client creates a normal `net/http.Request{}` object using the `Request()` function in `utils.go`. The `http.Request{}` object is then signed using the Client's Ed25519 private key. - The HTTP Method and Path (_note this is important_) are hashed, as well as the request body (if any) using the FNV128a hashing algorithm. - This hash is then signed by the Client's's Ed25519 private key. - The resulting signature is then encoded to Base64 (_standard encoding_) and added to the HTTP headers as a `Signature:` header. - In addition the Client's Ed25519 public key is added to the HTTP headers as `Signer:` Server: - The server calculates the same FNV128a hash of the HTTP Request Method and Path and the body (if any) - The server decodes the HTTP header `Signature:` - The server then uses the Client's Ed25519 public key in the HTTP header `Signer:` to verify the signature of the `Signature:` HTTP header which gives us back the original FNV128a hash the Client calculated for the request. - The server then compares the Client's hash with the expected hash to see if they compare equally. Co-authored-by: James Mills <1290234+prologic@users.noreply.github.com> Co-authored-by: Jon Lundy <jon@xuu.cc> Reviewed-on: https://git.mills.io/saltyim/saltyim/pulls/178 Reviewed-by: xuu <xuu@noreply@mills.io> |
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