Trait sp_keystore::SyncCryptoStore

pub trait SyncCryptoStore: CryptoStore + Send + Sync {
    // Required methods
    fn sr25519_public_keys(&self, id: KeyTypeId) -> Vec<Public> ;
    fn sr25519_generate_new(
        &self,
        id: KeyTypeId,
        seed: Option<&str>
    ) -> Result<Public, Error>;
    fn ed25519_public_keys(&self, id: KeyTypeId) -> Vec<Public> ;
    fn ed25519_generate_new(
        &self,
        id: KeyTypeId,
        seed: Option<&str>
    ) -> Result<Public, Error>;
    fn ecdsa_public_keys(&self, id: KeyTypeId) -> Vec<Public> ;
    fn ecdsa_generate_new(
        &self,
        id: KeyTypeId,
        seed: Option<&str>
    ) -> Result<Public, Error>;
    fn insert_unknown(
        &self,
        key_type: KeyTypeId,
        suri: &str,
        public: &[u8]
    ) -> Result<(), ()>;
    fn supported_keys(
        &self,
        id: KeyTypeId,
        keys: Vec<CryptoTypePublicPair>
    ) -> Result<Vec<CryptoTypePublicPair>, Error>;
    fn has_keys(&self, public_keys: &[(Vec<u8>, KeyTypeId)]) -> bool;
    fn sign_with(
        &self,
        id: KeyTypeId,
        key: &CryptoTypePublicPair,
        msg: &[u8]
    ) -> Result<Option<Vec<u8>>, Error>;
    fn sr25519_vrf_sign(
        &self,
        key_type: KeyTypeId,
        public: &Public,
        transcript_data: VRFTranscriptData
    ) -> Result<Option<VRFSignature>, Error>;
    fn ecdsa_sign_prehashed(
        &self,
        id: KeyTypeId,
        public: &Public,
        msg: &[u8; 32]
    ) -> Result<Option<Signature>, Error>;

    // Provided methods
    fn keys(&self, id: KeyTypeId) -> Result<Vec<CryptoTypePublicPair>, Error> { ... }
    fn sign_with_any(
        &self,
        id: KeyTypeId,
        keys: Vec<CryptoTypePublicPair>,
        msg: &[u8]
    ) -> Result<Option<(CryptoTypePublicPair, Vec<u8>)>, Error> { ... }
    fn sign_with_all(
        &self,
        id: KeyTypeId,
        keys: Vec<CryptoTypePublicPair>,
        msg: &[u8]
    ) -> Result<Vec<Result<Option<Vec<u8>>, Error>>, ()> { ... }
}

Sync version of the CryptoStore

Some parts of Substrate still rely on a sync version of the CryptoStore. To make the transition easier this auto trait wraps any async CryptoStore and exposes a sync interface using block_on. Usage of this is deprecated and it will be removed as soon as the internal usage has transitioned successfully. If you are starting out building something new do not use this, instead, use CryptoStore.

Required Methods

fn sr25519_public_keys(&self, id: KeyTypeId) -> Vec<Public>

Returns all sr25519 public keys for the given key type.

fn sr25519_generate_new( &self, id: KeyTypeId, seed: Option<&str> ) -> Result<Public, Error>

Generate a new sr25519 key pair for the given key type and an optional seed.

If the given seed is Some(_), the key pair will only be stored in memory.

Returns the public key of the generated key pair.

fn ed25519_public_keys(&self, id: KeyTypeId) -> Vec<Public>

Returns all ed25519 public keys for the given key type.

fn ed25519_generate_new( &self, id: KeyTypeId, seed: Option<&str> ) -> Result<Public, Error>

Generate a new ed25519 key pair for the given key type and an optional seed.

If the given seed is Some(_), the key pair will only be stored in memory.

Returns the public key of the generated key pair.

fn ecdsa_public_keys(&self, id: KeyTypeId) -> Vec<Public>

Returns all ecdsa public keys for the given key type.

fn ecdsa_generate_new( &self, id: KeyTypeId, seed: Option<&str> ) -> Result<Public, Error>

Generate a new ecdsa key pair for the given key type and an optional seed.

If the given seed is Some(_), the key pair will only be stored in memory.

Returns the public key of the generated key pair.

fn insert_unknown( &self, key_type: KeyTypeId, suri: &str, public: &[u8] ) -> Result<(), ()>

Insert a new key. This doesn’t require any known of the crypto; but a public key must be manually provided.

Places it into the file system store.

Err if there’s some sort of weird filesystem error, but should generally be Ok.

fn supported_keys( &self, id: KeyTypeId, keys: Vec<CryptoTypePublicPair> ) -> Result<Vec<CryptoTypePublicPair>, Error>

Find intersection between provided keys and supported keys

Provided a list of (CryptoTypeId,u8) pairs, this would return a filtered set of public keys which are supported by the keystore.

fn has_keys(&self, public_keys: &[(Vec<u8>, KeyTypeId)]) -> bool

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 sign_with( &self, id: KeyTypeId, key: &CryptoTypePublicPair, msg: &[u8] ) -> Result<Option<Vec<u8>>, Error>

Sign with key

Signs a message with the private key that matches the public key passed.

Returns the SCALE encoded signature if key is found and supported, None if the key doesn’t exist or an error when something failed.

fn sr25519_vrf_sign( &self, key_type: KeyTypeId, public: &Public, transcript_data: VRFTranscriptData ) -> Result<Option<VRFSignature>, Error>

Generate VRF signature for given transcript data.

Receives KeyTypeId and Public key to be able to map them to a private key that exists in the keystore which is, in turn, used for signing the provided transcript.

Returns a result containing the signature data. Namely, VRFOutput and VRFProof which are returned inside the VRFSignature container struct.

This function will return None if the given key_type and public combination doesn’t exist in the keystore or an Err when something failed.

fn ecdsa_sign_prehashed( &self, id: KeyTypeId, public: &Public, msg: &[u8; 32] ) -> Result<Option<Signature>, Error>

Generate an ECDSA signature for a given pre-hashed message.

Receives KeyTypeId and an ecdsa::Public key to be able to map them to a private key that exists in the keystore. This private key is, in turn, used for signing the provided pre-hashed message.

The msg argument provided should be a hashed message for which an ECDSA signature should be generated.

Returns an ecdsa::Signature or None in case the given id and public combination doesn’t exist in the keystore. An Err will be returned if generating the signature itself failed.

Provided Methods

fn keys(&self, id: KeyTypeId) -> Result<Vec<CryptoTypePublicPair>, Error>

List all supported keys

Returns a set of public keys the signer supports.

fn sign_with_any( &self, id: KeyTypeId, keys: Vec<CryptoTypePublicPair>, msg: &[u8] ) -> Result<Option<(CryptoTypePublicPair, Vec<u8>)>, Error>

Sign with any key

Given a list of public keys, find the first supported key and sign the provided message with that key.

Returns a tuple of the used key and the SCALE encoded signature or None if no key could be found to sign.

fn sign_with_all( &self, id: KeyTypeId, keys: Vec<CryptoTypePublicPair>, msg: &[u8] ) -> Result<Vec<Result<Option<Vec<u8>>, Error>>, ()>

Sign with all keys

Provided a list of public keys, sign a message with each key given that the key is supported.

Returns a list of Results each representing the SCALE encoded signature of each key, None if the key doesn’t exist or an error when something failed.

Implementors

impl SyncCryptoStore for KeyStore