keyfork-shard: traitify functionality
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GPG Key ID:
8E401478A3FBEF72
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@ -7,50 +7,33 @@ use std::{
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process::ExitCode,
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};
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use keyfork_shard::openpgp::{combine, discover_certs, openpgp::Cert, parse_messages};
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use keyfork_shard::{Format, openpgp::OpenPGP};
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type Result<T, E = Box<dyn std::error::Error>> = std::result::Result<T, E>;
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fn validate(
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shard: impl AsRef<Path>,
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key_discovery: Option<&str>,
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) -> Result<(File, Vec<Cert>)> {
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) -> Result<(File, Option<PathBuf>)> {
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let key_discovery = key_discovery.map(PathBuf::from);
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key_discovery.as_ref().map(std::fs::metadata).transpose()?;
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// Load certs from path
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let certs = key_discovery
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.map(discover_certs)
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.transpose()?
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.unwrap_or(vec![]);
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Ok((File::open(shard)?, certs))
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Ok((File::open(shard)?, key_discovery))
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}
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fn run() -> Result<()> {
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let mut args = env::args();
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let program_name = args.next().expect("program name");
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let args = args.collect::<Vec<_>>();
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let (messages_file, cert_list) = match args.as_slice() {
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let (messages_file, key_discovery) = match args.as_slice() {
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[shard, key_discovery] => validate(shard, Some(key_discovery))?,
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[shard] => validate(shard, None)?,
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_ => panic!("Usage: {program_name} <shard> [key_discovery]"),
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};
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let mut encrypted_messages = parse_messages(messages_file)?;
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let openpgp = OpenPGP;
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let encrypted_metadata = encrypted_messages
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.pop_front()
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.expect("any pgp encrypted message");
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let mut bytes = vec![];
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combine(
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cert_list,
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&encrypted_metadata,
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encrypted_messages.into(),
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&mut bytes,
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)?;
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let bytes = openpgp.decrypt_all_shards_to_secret(key_discovery, messages_file)?;
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print!("{}", smex::encode(&bytes));
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@ -7,47 +7,33 @@ use std::{
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process::ExitCode,
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};
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use keyfork_shard::openpgp::{decrypt, discover_certs, openpgp::Cert, parse_messages};
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use keyfork_shard::{Format, openpgp::OpenPGP};
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type Result<T, E = Box<dyn std::error::Error>> = std::result::Result<T, E>;
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fn validate<'a>(
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messages_file: impl AsRef<Path>,
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key_discovery: impl Into<Option<&'a str>>,
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) -> Result<(File, Vec<Cert>)> {
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let key_discovery = key_discovery.into().map(PathBuf::from);
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fn validate(
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shard: impl AsRef<Path>,
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key_discovery: Option<&str>,
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) -> Result<(File, Option<PathBuf>)> {
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let key_discovery = key_discovery.map(PathBuf::from);
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key_discovery.as_ref().map(std::fs::metadata).transpose()?;
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// Load certs from path
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let certs = key_discovery
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.map(discover_certs)
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.transpose()?
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.unwrap_or(vec![]);
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Ok((File::open(messages_file)?, certs))
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Ok((File::open(shard)?, key_discovery))
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}
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fn run() -> Result<()> {
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let mut args = env::args();
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let program_name = args.next().expect("program name");
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let args = args.collect::<Vec<_>>();
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let (messages_file, cert_list) = match args.as_slice() {
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[messages_file, key_discovery] => validate(messages_file, key_discovery.as_str())?,
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[messages_file] => validate(messages_file, None)?,
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_ => panic!("Usage: {program_name} messages_file [key_discovery]"),
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let (messages_file, key_discovery) = match args.as_slice() {
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[shard, key_discovery] => validate(shard, Some(key_discovery))?,
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[shard] => validate(shard, None)?,
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_ => panic!("Usage: {program_name} <shard> [key_discovery]"),
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};
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let mut encrypted_messages = parse_messages(messages_file)?;
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let openpgp = OpenPGP;
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let encrypted_metadata = encrypted_messages
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.pop_front()
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.expect("any pgp encrypted message");
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decrypt(
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&cert_list,
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&encrypted_metadata,
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encrypted_messages.make_contiguous(),
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)?;
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openpgp.decrypt_one_shard_for_transport(key_discovery, messages_file)?;
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Ok(())
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}
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@ -1,10 +1,13 @@
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#![doc = include_str!("../README.md")]
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use std::io::{stdin, stdout, Write};
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use std::{
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io::{stdin, stdout, Read, Write},
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path::Path,
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};
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use aes_gcm::{
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aead::{Aead, AeadCore, OsRng},
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Aes256Gcm, KeyInit,
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aead::{consts::U12, Aead, AeadCore, OsRng},
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Aes256Gcm, KeyInit, Nonce,
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};
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use hkdf::Hkdf;
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use keyfork_mnemonic_util::{English, Mnemonic};
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@ -16,9 +19,287 @@ use sha2::Sha256;
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use sharks::{Share, Sharks};
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use x25519_dalek::{EphemeralSecret, PublicKey};
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// 256 bit share encrypted is 49 bytes, couple more bytes before we reach max size
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const ENC_LEN: u8 = 4 * 16;
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#[cfg(feature = "openpgp")]
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pub mod openpgp;
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/// A format to use for splitting and combining secrets.
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pub trait Format {
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/// The error type returned from any failed operations.
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type Error: std::error::Error + 'static;
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/// A type encapsulating the public key recipients of shards.
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type PublicKeyData;
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/// A type encapsulating the private key recipients of shards.
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type PrivateKeyData;
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/// A type representing the parsed, but encrypted, Shard data.
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type ShardData;
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/// A type representing a Signer derived from the secret.
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type Signer;
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/// Parse the public key data from a readable type.
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///
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/// # Errors
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/// The method may return an error if private key data could not be properly parsed from the
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/// path.
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/// occurred while parsing the public key data.
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fn parse_public_key_data(
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&self,
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key_data_path: impl AsRef<Path>,
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) -> Result<Self::PublicKeyData, Self::Error>;
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/// Parse the private key data from a readable type. The private key may not be accessible (it
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/// may be hardware only, such as a smartcard), for which this method may return None.
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///
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/// # Errors
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/// The method may return an error if private key data could not be properly parsed from the
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/// path.
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fn parse_private_key_data(
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&self,
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key_data_path: impl AsRef<Path>,
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) -> Result<Self::PrivateKeyData, Self::Error>;
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/// Parse the Shard file into a processable type.
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///
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/// # Errors
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/// The method may return an error if the Shard file could not be read from or if the Shard
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/// file could not be properly parsed.
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fn parse_shard_file(
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&self,
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shard_file: impl Read + Send + Sync,
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) -> Result<Self::ShardData, Self::Error>;
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/// Write the Shard data to a Shard file.
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///
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/// # Errors
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/// The method may return an error if the Shard data could not be properly serialized or if the
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/// Shard file could not be written to.
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fn format_shard_file(
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&self,
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shard_data: Self::ShardData,
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shard_file: impl Write,
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) -> Result<(), Self::Error>;
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/// Derive a Signer from the secret.
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///
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/// # Errors
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/// This function may return an error if a Signer could not be properly created.
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fn derive_signer(&self, secret: &[u8]) -> Result<Self::Signer, Self::Error>;
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/// Encrypt multiple shares to public keys.
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///
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/// # Errors
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/// The method may return an error if the share could not be encrypted to a public key or if
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/// the ShardData could not be created.
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fn generate_shard_data(
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&self,
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shares: &[Share],
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signer: &Self::Signer,
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public_keys: Self::PublicKeyData,
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) -> Result<Self::ShardData, Self::Error>;
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/// Decrypt shares and associated metadata from a readable input. For the current version of
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/// Keyfork, the only associated metadata is a u8 representing the threshold to combine
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/// secrets.
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///
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/// # Errors
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/// The method may return an error if the shardfile couldn't be read from, if all shards
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/// could not be decrypted, or if a shard could not be parsed from the decrypted data.
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fn decrypt_all_shards(
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&self,
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private_keys: Option<Self::PrivateKeyData>,
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shard_data: Self::ShardData,
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) -> Result<(Vec<Share>, u8), Self::Error>;
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/// Decrypt a single share and associated metadata from a reaable input. For the current
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/// version of Keyfork, the only associated metadata is a u8 representing the threshold to
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/// combine secrets.
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///
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/// # Errors
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/// The method may return an error if the shardfile couldn't be read from, if a shard could not
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/// be decrypted, or if a shard could not be parsed from the decrypted data.
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fn decrypt_one_shard(
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&self,
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private_keys: Option<Self::PrivateKeyData>,
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shard_data: Self::ShardData,
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) -> Result<(Share, u8), Self::Error>;
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/// Decrypt multiple shares and combine them to recreate a secret.
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///
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/// # Errors
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/// The method may return an error if the shares can't be decrypted or if the shares can't
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/// be combined into a secret.
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fn decrypt_all_shards_to_secret(
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&self,
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private_key_data_path: Option<impl AsRef<Path>>,
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reader: impl Read + Send + Sync,
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) -> Result<Vec<u8>, Box<dyn std::error::Error>> {
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let private_keys = private_key_data_path
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.map(|p| self.parse_private_key_data(p))
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.transpose()?;
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let shard_data = self.parse_shard_file(reader)?;
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let (shares, threshold) = self.decrypt_all_shards(private_keys, shard_data)?;
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let secret = Sharks(threshold)
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.recover(&shares)
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.map_err(|e| SharksError::CombineShare(e.to_string()))?;
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Ok(secret)
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}
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/// Establish an AES-256-GCM transport key using ECDH, decrypt a single shard, and encrypt the
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/// shard to the AES key.
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///
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/// # Errors
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/// The method may return an error if a share can't be decrypted. The method will not return an
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/// error if the camera is inaccessible or if a hardware error is encountered while scanning a
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/// QR code; instead, a mnemonic prompt will be used.
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fn decrypt_one_shard_for_transport(
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&self,
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private_key_data_path: Option<impl AsRef<Path>>,
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reader: impl Read + Send + Sync,
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) -> Result<(), Box<dyn std::error::Error>> {
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let mut pm = Terminal::new(stdin(), stdout())?;
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let wordlist = Wordlist::default();
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// parse input
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let private_keys = private_key_data_path
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.map(|p| self.parse_private_key_data(p))
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.transpose()?;
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let shard_data = self.parse_shard_file(reader)?;
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// establish AES-256-GCM key via ECDH
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let mut nonce_data: Option<[u8; 12]> = None;
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let mut pubkey_data: Option<[u8; 32]> = None;
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// receive remote data via scanning QR code from camera
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#[cfg(feature = "qrcode")]
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{
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pm.prompt_message(PromptMessage::Text(QRCODE_PROMPT.to_string()))?;
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if let Ok(Some(hex)) =
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keyfork_qrcode::scan_camera(std::time::Duration::from_secs(30), 0)
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{
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let decoded_data = smex::decode(&hex)?;
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nonce_data = Some(decoded_data[..12].try_into().map_err(|_| InvalidData)?);
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pubkey_data = Some(decoded_data[12..].try_into().map_err(|_| InvalidData)?)
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} else {
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pm.prompt_message(PromptMessage::Text(QRCODE_ERROR.to_string()))?;
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};
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}
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// if QR code scanning failed or was unavailable, read from a set of mnemonics
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let (nonce, their_pubkey) = match (nonce_data, pubkey_data) {
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(Some(nonce), Some(pubkey)) => (nonce, pubkey),
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_ => {
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let validator = MnemonicSetValidator {
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word_lengths: [9, 24],
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};
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let [nonce_mnemonic, pubkey_mnemonic] = pm.prompt_validated_wordlist(
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QRCODE_COULDNT_READ,
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&wordlist,
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3,
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validator.to_fn(),
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)?;
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let nonce = nonce_mnemonic
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.as_bytes()
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.try_into()
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.map_err(|_| InvalidData)?;
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let pubkey = pubkey_mnemonic
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.as_bytes()
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.try_into()
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.map_err(|_| InvalidData)?;
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(nonce, pubkey)
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}
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};
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// create our shared key
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let our_key = EphemeralSecret::random();
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let our_pubkey_mnemonic =
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Mnemonic::from_entropy(PublicKey::from(&our_key).as_bytes(), Default::default())?;
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let shared_secret = our_key
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.diffie_hellman(&PublicKey::from(their_pubkey))
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.to_bytes();
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let hkdf = Hkdf::<Sha256>::new(None, &shared_secret);
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let mut hkdf_output = [0u8; 256 / 8];
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hkdf.expand(&[], &mut hkdf_output)?;
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let shared_key = Aes256Gcm::new_from_slice(&hkdf_output)?;
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// decrypt a single shard and create the payload
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let (share, threshold) = self.decrypt_one_shard(private_keys, shard_data)?;
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let mut payload = Vec::from(&share);
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payload.insert(0, HUNK_VERSION);
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payload.insert(1, threshold);
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assert!(
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payload.len() <= ENC_LEN as usize,
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"invalid share length (too long, max {ENC_LEN} bytes)"
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);
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// encrypt data
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let nonce = Nonce::<U12>::from_slice(&nonce);
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let payload_bytes = shared_key.encrypt(nonce, payload.as_slice())?;
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// convert data to a static-size payload
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// NOTE: Padding length is less than u8::MAX because ENC_LEN < u8::MAX
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#[allow(clippy::assertions_on_constants)]
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{
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assert!(ENC_LEN < u8::MAX, "padding byte can be u8");
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}
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#[allow(clippy::cast_possible_truncation)]
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let mut out_bytes = [payload_bytes.len() as u8; ENC_LEN as usize];
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assert!(
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payload_bytes.len() < out_bytes.len(),
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"encrypted payload larger than acceptable limit"
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);
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out_bytes[..payload_bytes.len()].clone_from_slice(&payload_bytes);
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// NOTE: This previously used a single repeated value as the padding byte, but resulted in
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// difficulty when entering in prompts manually, as one's place could be lost due to
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// repeated keywords. This is resolved below by having sequentially increasing numbers up to
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// but not including the last byte.
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#[allow(clippy::cast_possible_truncation)]
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for (i, byte) in (out_bytes[payload_bytes.len()..(ENC_LEN as usize - 1)])
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.iter_mut()
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.enumerate()
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{
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*byte = (i % u8::MAX as usize) as u8;
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}
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// safety: size of out_bytes is constant and always % 4 == 0
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let payload_mnemonic =
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unsafe { Mnemonic::from_raw_entropy(&out_bytes, Default::default()) };
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#[cfg(feature = "qrcode")]
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{
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use keyfork_qrcode::{qrencode, ErrorCorrection};
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let mut qrcode_data = our_pubkey_mnemonic.to_bytes();
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qrcode_data.extend(payload_mnemonic.as_bytes());
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if let Ok(qrcode) = qrencode(&smex::encode(&qrcode_data), ErrorCorrection::Highest) {
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pm.prompt_message(PromptMessage::Text(
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concat!(
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"A QR code will be displayed after this prompt. ",
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"Send the QR code back to the operator combining the shards. ",
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"Nobody else should scan this QR code."
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)
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.to_string(),
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))?;
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pm.prompt_message(PromptMessage::Data(qrcode))?;
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}
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}
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pm.prompt_message(PromptMessage::Text(format!(
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"Upon request, these words should be sent: {our_pubkey_mnemonic} {payload_mnemonic}"
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)))?;
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Ok(())
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}
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}
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/// Errors encountered while creating or combining shares using Shamir's Secret Sharing.
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#[derive(thiserror::Error, Debug)]
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pub enum SharksError {
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|
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@ -59,6 +59,7 @@ const SHARD_METADATA_OFFSET: usize = 2;
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use super::{
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InvalidData, SharksError, HUNK_VERSION, QRCODE_COULDNT_READ, QRCODE_ERROR, QRCODE_PROMPT,
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QRCODE_TIMEOUT,
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Format,
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};
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// 256 bit share is 49 bytes + some amount of hunk bytes, gives us reasonable padding
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|
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@ -163,6 +164,18 @@ impl EncryptedMessage {
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}
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}
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/// Serialize all contents of the message to a writer.
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///
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/// # Errors
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/// The function may error for any condition in Sequoia's Serialize trait.
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pub fn serialize(&self, o: &mut dyn std::io::Write) -> openpgp::Result<()> {
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||||
for pkesk in &self.pkesks {
|
||||
pkesk.serialize(o)?;
|
||||
}
|
||||
self.message.serialize(o)?;
|
||||
Ok(())
|
||||
}
|
||||
|
||||
/// Decrypt the message with a Sequoia policy and decryptor.
|
||||
///
|
||||
/// This method creates a container containing the packets and passes the serialized container
|
||||
|
|
@ -207,12 +220,273 @@ impl EncryptedMessage {
|
|||
}
|
||||
}
|
||||
|
||||
///
|
||||
pub struct OpenPGP;
|
||||
|
||||
impl OpenPGP {
|
||||
/// Read all OpenPGP certificates in a path and return a [`Vec`] of them. Certificates are read
|
||||
/// from a file, or from files one level deep in a directory.
|
||||
///
|
||||
/// # Errors
|
||||
/// The function may return an error if it is unable to read the directory or if Sequoia is unable
|
||||
/// to load certificates from the file.
|
||||
pub fn discover_certs(path: impl AsRef<Path>) -> Result<Vec<Cert>> {
|
||||
let path = path.as_ref();
|
||||
|
||||
if path.is_file() {
|
||||
let mut vec = vec![];
|
||||
for cert in CertParser::from_file(path).map_err(Error::Sequoia)? {
|
||||
vec.push(cert.map_err(Error::Sequoia)?);
|
||||
}
|
||||
Ok(vec)
|
||||
} else {
|
||||
let mut vec = vec![];
|
||||
for entry in path
|
||||
.read_dir()
|
||||
.map_err(Error::Io)?
|
||||
.filter_map(Result::ok)
|
||||
.filter(|p| p.path().is_file())
|
||||
{
|
||||
vec.push(Cert::from_file(entry.path()).map_err(Error::Sequoia)?);
|
||||
}
|
||||
Ok(vec)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Format for OpenPGP {
|
||||
type Error = Error;
|
||||
type PublicKeyData = Vec<Cert>;
|
||||
type PrivateKeyData = Vec<Cert>;
|
||||
type ShardData = Vec<EncryptedMessage>;
|
||||
type Signer = openpgp::crypto::KeyPair;
|
||||
|
||||
fn parse_public_key_data(
|
||||
&self,
|
||||
key_data_path: impl AsRef<Path>,
|
||||
) -> std::result::Result<Self::PublicKeyData, Self::Error> {
|
||||
Self::discover_certs(key_data_path)
|
||||
}
|
||||
|
||||
fn parse_private_key_data(
|
||||
&self,
|
||||
key_data_path: impl AsRef<Path>,
|
||||
) -> std::result::Result<Self::PrivateKeyData, Self::Error> {
|
||||
Self::discover_certs(key_data_path)
|
||||
}
|
||||
|
||||
fn parse_shard_file(
|
||||
&self,
|
||||
shard_file: impl Read + Send + Sync,
|
||||
) -> Result<Self::ShardData, Self::Error> {
|
||||
let mut pkesks = Vec::new();
|
||||
let mut encrypted_messages = vec![];
|
||||
|
||||
for packet in PacketPile::from_reader(shard_file)
|
||||
.map_err(Error::Sequoia)?
|
||||
.into_children()
|
||||
{
|
||||
match packet {
|
||||
Packet::PKESK(p) => pkesks.push(p),
|
||||
Packet::SEIP(s) => {
|
||||
encrypted_messages.push(EncryptedMessage::new(&mut pkesks, s));
|
||||
}
|
||||
s => {
|
||||
panic!("Invalid variant found: {}", s.tag());
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Ok(encrypted_messages)
|
||||
}
|
||||
|
||||
fn derive_signer(&self, secret: &[u8]) -> Result<Self::Signer, Self::Error> {
|
||||
let userid = UserID::from("keyfork-sss");
|
||||
let path = DerivationPath::from_str("m/7366512'/0'")?;
|
||||
let seed = VariableLengthSeed::new(secret);
|
||||
let xprv = XPrv::new(seed).derive_path(&path)?;
|
||||
let derived_cert = keyfork_derive_openpgp::derive(
|
||||
xprv,
|
||||
&[KeyFlags::empty().set_certification().set_signing()],
|
||||
&userid,
|
||||
)?;
|
||||
|
||||
let signing_key = derived_cert
|
||||
.primary_key()
|
||||
.parts_into_secret()
|
||||
.map_err(Error::Sequoia)?
|
||||
.key()
|
||||
.clone()
|
||||
.into_keypair()
|
||||
.map_err(Error::Sequoia)?;
|
||||
|
||||
Ok(signing_key)
|
||||
}
|
||||
|
||||
fn format_shard_file(
|
||||
&self,
|
||||
shard_data: Self::ShardData,
|
||||
shard_file: impl Write,
|
||||
) -> Result<(), Self::Error> {
|
||||
let mut writer = Writer::new(shard_file, Kind::Message).map_err(Error::SequoiaIo)?;
|
||||
for message in shard_data {
|
||||
message.serialize(&mut writer).map_err(Error::Sequoia)?;
|
||||
}
|
||||
writer.finalize().map_err(Error::SequoiaIo)?;
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn generate_shard_data(
|
||||
&self,
|
||||
shares: &[Share],
|
||||
signer: &Self::Signer,
|
||||
public_keys: Self::PublicKeyData,
|
||||
) -> std::result::Result<Self::ShardData, Self::Error> {
|
||||
let policy = StandardPolicy::new();
|
||||
let mut total_recipients = vec![];
|
||||
let mut messages = vec![];
|
||||
|
||||
for (share, cert) in shares.iter().zip(public_keys) {
|
||||
total_recipients.push(cert.clone());
|
||||
let valid_cert = cert.with_policy(&policy, None).map_err(Error::Sequoia)?;
|
||||
let encryption_keys = get_encryption_keys(&valid_cert).collect::<Vec<_>>();
|
||||
|
||||
let mut message_output = vec![];
|
||||
let message = Message::new(&mut message_output);
|
||||
let message = Encryptor2::for_recipients(
|
||||
message,
|
||||
encryption_keys
|
||||
.iter()
|
||||
.map(|k| Recipient::new(KeyID::wildcard(), k.key())),
|
||||
)
|
||||
.build()
|
||||
.map_err(Error::Sequoia)?;
|
||||
let message = Signer::new(message, signer.clone())
|
||||
.build()
|
||||
.map_err(Error::Sequoia)?;
|
||||
let mut message = LiteralWriter::new(message)
|
||||
.build()
|
||||
.map_err(Error::Sequoia)?;
|
||||
// NOTE: This shouldn't be an alloc, but it's a minor alloc, so it's fine.
|
||||
message
|
||||
.write_all(&Vec::from(share))
|
||||
.map_err(Error::SequoiaIo)?;
|
||||
message.finalize().map_err(Error::Sequoia)?;
|
||||
|
||||
messages.push(message_output);
|
||||
}
|
||||
|
||||
// A little bit of back and forth, we're going to parse the messages just to serialize them
|
||||
// later.
|
||||
let message = messages.into_iter().flatten().collect::<Vec<_>>();
|
||||
let data = self.parse_shard_file(message.as_slice())?;
|
||||
Ok(data)
|
||||
}
|
||||
|
||||
fn decrypt_all_shards(
|
||||
&self,
|
||||
private_keys: Option<Self::PrivateKeyData>,
|
||||
mut shard_data: Self::ShardData,
|
||||
) -> std::result::Result<(Vec<Share>, u8), Self::Error> {
|
||||
// Be as liberal as possible when decrypting.
|
||||
// We don't want to invalidate someone's keys just because the old sig expired.
|
||||
let policy = NullPolicy::new();
|
||||
let mut keyring = Keyring::new(private_keys.unwrap_or_default())?;
|
||||
let mut manager = SmartcardManager::new()?;
|
||||
|
||||
let metadata = shard_data.remove(0);
|
||||
let metadata_content = decrypt_metadata(&metadata, &policy, &mut keyring, &mut manager)?;
|
||||
|
||||
let (threshold, root_cert, certs) = decode_metadata_v1(&metadata_content)?;
|
||||
|
||||
keyring.set_root_cert(root_cert.clone());
|
||||
manager.set_root_cert(root_cert.clone());
|
||||
|
||||
// Generate a controlled binding from certificates to encrypted messages. This is stable
|
||||
// because we control the order packets are encrypted and certificates are stored.
|
||||
|
||||
// TODO: remove alloc, convert EncryptedMessage to &EncryptedMessage
|
||||
let mut messages: HashMap<KeyID, EncryptedMessage> = certs
|
||||
.iter()
|
||||
.map(Cert::keyid)
|
||||
.zip(shard_data)
|
||||
.collect();
|
||||
let mut decrypted_messages =
|
||||
decrypt_with_keyring(&mut messages, &certs, &policy, &mut keyring)?;
|
||||
|
||||
// clean decrypted messages from encrypted messages
|
||||
messages.retain(|k, _v| !decrypted_messages.contains_key(k));
|
||||
|
||||
let left_from_threshold = threshold as usize - decrypted_messages.len();
|
||||
if left_from_threshold > 0 {
|
||||
#[allow(clippy::cast_possible_truncation)]
|
||||
let new_messages = decrypt_with_manager(
|
||||
left_from_threshold as u8,
|
||||
&mut messages,
|
||||
&certs,
|
||||
&policy,
|
||||
&mut manager,
|
||||
)?;
|
||||
decrypted_messages.extend(new_messages);
|
||||
}
|
||||
|
||||
let shares = decrypted_messages
|
||||
.values()
|
||||
.map(|message| Share::try_from(message.as_slice()))
|
||||
.collect::<Result<Vec<_>, &str>>()
|
||||
.map_err(|e| SharksError::Share(e.to_string()))?;
|
||||
Ok((shares, threshold))
|
||||
}
|
||||
|
||||
fn decrypt_one_shard(
|
||||
&self,
|
||||
private_keys: Option<Self::PrivateKeyData>,
|
||||
mut shard_data: Self::ShardData,
|
||||
) -> std::result::Result<(Share, u8), Self::Error> {
|
||||
let policy = NullPolicy::new();
|
||||
let mut keyring = Keyring::new(private_keys.unwrap_or_default())?;
|
||||
let mut manager = SmartcardManager::new()?;
|
||||
|
||||
let metadata = shard_data.remove(0);
|
||||
let metadata_content = decrypt_metadata(&metadata, &policy, &mut keyring, &mut manager)?;
|
||||
|
||||
let (threshold, root_cert, certs) = decode_metadata_v1(&metadata_content)?;
|
||||
|
||||
keyring.set_root_cert(root_cert.clone());
|
||||
manager.set_root_cert(root_cert.clone());
|
||||
let mut messages: HashMap<KeyID, EncryptedMessage> = certs
|
||||
.iter()
|
||||
.map(Cert::keyid)
|
||||
.zip(shard_data)
|
||||
.collect();
|
||||
|
||||
let decrypted_messages =
|
||||
decrypt_with_keyring(&mut messages, &certs, &policy, &mut keyring)?;
|
||||
|
||||
if let Some(message) = decrypted_messages.into_values().next() {
|
||||
let share = Share::try_from(message.as_slice()).map_err(|e| SharksError::Share(e.to_string()))?;
|
||||
return Ok((share, threshold));
|
||||
}
|
||||
|
||||
let decrypted_messages =
|
||||
decrypt_with_manager(1, &mut messages, &certs, &policy, &mut manager)?;
|
||||
|
||||
if let Some(message) = decrypted_messages.into_values().next() {
|
||||
let share = Share::try_from(message.as_slice()).map_err(|e| SharksError::Share(e.to_string()))?;
|
||||
return Ok((share, threshold));
|
||||
}
|
||||
|
||||
panic!("unable to decrypt shard");
|
||||
}
|
||||
}
|
||||
|
||||
/// Read all OpenPGP certificates in a path and return a [`Vec`] of them. Certificates are read
|
||||
/// from a file, or from files one level deep in a directory.
|
||||
///
|
||||
/// # Errors
|
||||
/// The function may return an error if it is unable to read the directory or if Sequoia is unable
|
||||
/// to load certificates from the file.
|
||||
#[deprecated]
|
||||
pub fn discover_certs(path: impl AsRef<Path>) -> Result<Vec<Cert>> {
|
||||
let path = path.as_ref();
|
||||
|
||||
|
|
@ -245,6 +519,7 @@ pub fn discover_certs(path: impl AsRef<Path>) -> Result<Vec<Cert>> {
|
|||
/// # Panics
|
||||
/// When given packets that are not a list of PKESK packets and SEIP packets, the function panics.
|
||||
/// The `split` utility should never give packets that are not in this format.
|
||||
#[deprecated]
|
||||
pub fn parse_messages(reader: impl Read + Send + Sync) -> Result<VecDeque<EncryptedMessage>> {
|
||||
let mut pkesks = Vec::new();
|
||||
let mut encrypted_messages = VecDeque::new();
|
||||
|
|
@ -416,6 +691,7 @@ fn decrypt_metadata(
|
|||
})
|
||||
}
|
||||
|
||||
#[deprecated]
|
||||
fn decrypt_one(
|
||||
messages: Vec<EncryptedMessage>,
|
||||
certs: &[Cert],
|
||||
|
|
@ -465,6 +741,8 @@ fn decrypt_one(
|
|||
/// The function may panic if a share is decrypted but has a length larger than 256 bits. This is
|
||||
/// atypical usage and should not be encountered in normal usage, unless something that is not a
|
||||
/// Keyfork seed has been fed into [`split`].
|
||||
#[deprecated]
|
||||
#[allow(deprecated)]
|
||||
pub fn decrypt(
|
||||
certs: &[Cert],
|
||||
metadata: &EncryptedMessage,
|
||||
|
|
|
|||
Loading…
Reference in New Issue