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[offchain] Support for sign & verify for crypto keys (#3023)

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* Implement sign & verify.

* Use phrases and password.

* Sign & verify with authority keys.

* Fix tests.

* WiP

* WiP

* Allow the caller to decide on 'CryptoKind'.

* Remove TODO.

* Make seed private back.

* Fix non-std build and bump version.

* Use Into<u32> instead of asses.

* Add missing typedef.
This commit is contained in:
Tomasz Drwięga
2019-07-09 17:09:14 +02:00
committed by Gavin Wood
parent ed630e5eda
commit e729dbabbe
22 changed files with 647 additions and 178 deletions
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substrate/core/sr-io/src/lib.rs
+9 -4
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@@ -249,28 +249,33 @@ export_api! {
/// If `key` is `None`, it will attempt to use current authority key.
///
/// Returns an error if `key` is not available or does not exist.
fn encrypt(key: Option<CryptoKeyId>, data: &[u8]) -> Result<Vec<u8>, ()>;
fn encrypt(key: Option<CryptoKeyId>, kind: CryptoKind, data: &[u8]) -> Result<Vec<u8>, ()>;
/// Decrypt a piece of data using given crypto key.
///
/// If `key` is `None`, it will attempt to use current authority key.
///
/// Returns an error if data cannot be decrypted or the `key` is not available or does not exist.
fn decrypt(key: Option<CryptoKeyId>, data: &[u8]) -> Result<Vec<u8>, ()>;
fn decrypt(key: Option<CryptoKeyId>, kind: CryptoKind, data: &[u8]) -> Result<Vec<u8>, ()>;
/// Sign a piece of data using given crypto key.
///
/// If `key` is `None`, it will attempt to use current authority key.
///
/// Returns an error if `key` is not available or does not exist.
fn sign(key: Option<CryptoKeyId>, data: &[u8]) -> Result<Vec<u8>, ()>;
fn sign(key: Option<CryptoKeyId>, kind: CryptoKind, data: &[u8]) -> Result<Vec<u8>, ()>;
/// Verifies that `signature` for `msg` matches given `key`.
///
/// Returns an `Ok` with `true` in case it does, `false` in case it doesn't.
/// Returns an error in case the key is not available or does not exist or the parameters
/// lengths are incorrect.
fn verify(key: Option<CryptoKeyId>, msg: &[u8], signature: &[u8]) -> Result<bool, ()>;
fn verify(
key: Option<CryptoKeyId>,
kind: CryptoKind,
msg: &[u8],
signature: &[u8]
) -> Result<bool, ()>;
/// Returns current UNIX timestamp (in millis)
fn timestamp() -> Timestamp;