Differential D7087 Diff 23808 shared/comm-opaque2/src/client/login.rs

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shared/comm-opaque2/src/client/login.rs

	use opaque_ke::{			use opaque_ke::{
	errors::ProtocolError, ClientLogin, ClientLoginFinishParameters,			errors::ProtocolError, ClientLogin, ClientLoginFinishParameters,
	CredentialResponse,			CredentialResponse,
	};			};
	use rand::rngs::OsRng;			use rand::rngs::OsRng;
				use wasm_bindgen::prelude::wasm_bindgen;

	use crate::Cipher;			use crate::{error::OpaqueError, Cipher};

				#[wasm_bindgen]
	pub struct Login {			pub struct Login {
	state: Option<ClientLogin<Cipher>>,			state: Option<ClientLogin<Cipher>>,
	password: Option<String>,			password: Option<String>,
	rng: OsRng,			rng: OsRng,
	export_key: Option<Vec<u8>>,			export_key: Option<Vec<u8>>,
	pub session_key: Option<Vec<u8>>,			session_key: Option<Vec<u8>>,
	}			}

				#[wasm_bindgen]
	impl Login {			impl Login {
				#[wasm_bindgen(constructor)]
	pub fn new() -> Login {			pub fn new() -> Login {
	Login {			Login {
	state: None,			state: None,
	password: None,			password: None,
	rng: OsRng,			rng: OsRng,
	session_key: None,			session_key: None,
	export_key: None,			export_key: None,
	}			}
	}			}

	pub fn start(&mut self, password: &str) -> Result<Vec<u8>, ProtocolError> {			#[wasm_bindgen]
				varunUnsubmitted Done Inline Actions why do we need the wasm_bindgen attribute on every function? other examples i looked at only had it above the impl block varun: why do we need the wasm_bindgen attribute on every function? other examples i looked at only…
				jonAuthorUnsubmitted Done Inline Actions you're right, we don't. Was just following `wasm-opaque`. jon: you're right, we don't. Was just following `wasm-opaque`.
				pub fn start(&mut self, password: &str) -> Result<Vec<u8>, OpaqueError> {
	let client_start_result =			let client_start_result =
	ClientLogin::<Cipher>::start(&mut self.rng, password.as_bytes())?;			ClientLogin::<Cipher>::start(&mut self.rng, password.as_bytes())?;
	self.state = Some(client_start_result.state);			self.state = Some(client_start_result.state);
	self.password = Some(password.to_string());			self.password = Some(password.to_string());
	Ok(client_start_result.message.serialize().to_vec())			Ok(client_start_result.message.serialize().to_vec())
	}			}

				#[wasm_bindgen]
	pub fn finish(			pub fn finish(
	&mut self,			&mut self,
	response_payload: &[u8],			response_payload: &[u8],
	) -> Result<Vec<u8>, ProtocolError> {			) -> Result<Vec<u8>, OpaqueError> {
	let response = CredentialResponse::deserialize(response_payload)?;			let response = CredentialResponse::deserialize(response_payload)?;
	let password = self			let password = self
	.password			.password
	.take()			.take()
	.ok_or_else(\|\| ProtocolError::InvalidLoginError)?;			.ok_or_else(\|\| ProtocolError::InvalidLoginError)?;
	let state = self			let state = self
	.state			.state
	.take()			.take()
	.ok_or_else(\|\| ProtocolError::InvalidLoginError)?;			.ok_or_else(\|\| ProtocolError::InvalidLoginError)?;
	let result = state.finish(			let result = state.finish(
	password.as_bytes(),			password.as_bytes(),
	response,			response,
	ClientLoginFinishParameters::default(),			ClientLoginFinishParameters::default(),
	)?;			)?;

	self.session_key = Some(result.session_key.to_vec());			self.session_key = Some(result.session_key.to_vec());
	self.export_key = Some(result.export_key.to_vec());			self.export_key = Some(result.export_key.to_vec());

	Ok(result.message.serialize().to_vec())			Ok(result.message.serialize().to_vec())
	}			}

				#[wasm_bindgen(getter)]
				pub fn session_key(&self) -> Result<Vec<u8>, OpaqueError> {
				match &self.session_key {
				Some(v) => Ok(v.clone()),
				None => Err(ProtocolError::InvalidLoginError.into()),
				}
				}
	}			}