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ExtendedFullViewingKey

zcash_client_backend::keys::sapling

Struct ExtendedFullViewingKey 

pub struct ExtendedFullViewingKey { /* private fields */ }
Available on crate feature sapling only.
Expand description

A Sapling extended full viewing key

The incoming viewing keys of both the external and the internal full viewing key of an ExtendedFullViewingKey are never zero.

Implementations§

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impl ExtendedFullViewingKey

pub fn read<R>(reader: R) -> Result<ExtendedFullViewingKey, Error>
where R: Read,

pub fn fvk(&self) -> &FullViewingKey

Returns the full viewing key component of this extended full viewing key.

pub fn write<W>(&self, writer: W) -> Result<(), Error>
where W: Write,

pub fn address(&self, j: DiversifierIndex) -> Option<PaymentAddress>

Attempt to produce a payment address given the specified diversifier index, and return None if the specified index does not produce a valid diversifier.

pub fn find_address( &self, j: DiversifierIndex, ) -> Option<(DiversifierIndex, PaymentAddress)>

Search the diversifier space starting at diversifier index j for one which will produce a valid diversifier, and return the payment address constructed using that diversifier along with the index at which the valid diversifier was found.

pub fn default_address(&self) -> (DiversifierIndex, PaymentAddress)

Returns the payment address corresponding to the smallest valid diversifier index, along with that index.

pub fn derive_internal(&self) -> Option<ExtendedFullViewingKey>

Derives an internal full viewing key used for internal operations such as change and auto-shielding. The internal FVK has the same spend authority (the private key corresponding to ak) as the original, but viewing authority only for internal transfers.

Returns None if the internal full viewing key does not satisfy the invariant of ExtendedFullViewingKey: that is, if the incoming viewing key of its own internal full viewing key is zero. This has a negligible probability of occurring.

Specified in ZIP 32.

pub fn to_diversifiable_full_viewing_key(&self) -> DiversifiableFullViewingKey

Trait Implementations§

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impl Clone for ExtendedFullViewingKey

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fn clone(&self) -> ExtendedFullViewingKey

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for ExtendedFullViewingKey

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl From<&ExtendedFullViewingKey> for DiversifiableFullViewingKey

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fn from(extfvk: &ExtendedFullViewingKey) -> DiversifiableFullViewingKey

Converts to this type from the input type.
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impl From<ExtendedFullViewingKey> for DiversifiableFullViewingKey

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fn from(extfvk: ExtendedFullViewingKey) -> DiversifiableFullViewingKey

Converts to this type from the input type.
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impl PartialEq for ExtendedFullViewingKey

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fn eq(&self, rhs: &ExtendedFullViewingKey) -> bool

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more

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