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Introduces author_hasKey and author_hasSessionKeys rpc endpoints (#4720)

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* Introduces `author_hasKey` and `author_hasSessionKeys` rpc endpoints

Both endpoints can be used to check if a key is present in the keystore.

- `hasKey` works on with an individual public key and key type. It
checks if a private key for the given combination exists in the
keystore.
- `hasSessionKeys` works with the full encoded session key blob stored
on-chain in `nextKeys`. This requires that the given blob can be decoded
by the runtime. It will return `true`, iff all public keys of the
session key exist in the storage.

Fixes: https://github.com/paritytech/substrate/issues/4696

* Update client/rpc-api/src/author/error.rs

Co-Authored-By: Nikolay Volf <nikvolf@gmail.com>

* Indentation

Co-authored-by: Nikolay Volf <nikvolf@gmail.com>
This commit is contained in:
Bastian Köcher
2020-01-24 15:20:45 +01:00
committed by GitHub
parent 1614ce0996
commit fc99887de0
21 changed files with 223 additions and 34 deletions
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substrate/primitives/core/src/traits.rs
+5
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@@ -69,6 +69,11 @@ pub trait BareCryptoStore: Send + Sync {
/// Get the password for this store.
fn password(&self) -> Option<&str>;
/// Checks if the private keys for the given public key and key type combinations exist.
///
/// Returns `true` iff all private keys could be found.
fn has_keys(&self, public_keys: &[(Vec<u8>, KeyTypeId)]) -> bool;
}
/// A pointer to the key store.