Module sapling_crypto::zip32

Sapling key derivation according to ZIP 32 and ZIP 316

Implements section 4.2.2 of the Zcash Protocol Specification.

Modules

• testingtest-dependencies

Structs

• DiversifiableFullViewingKey
  A Sapling key that provides the capability to view incoming and outgoing transactions.
• DiversifierKey
  A key used to derive diversifiers for a particular child key
• ExtendedFullViewingKey
• ExtendedSpendingKey
  A Sapling extended spending key
• IncomingViewingKey
  A Sapling key that provides the capability to decrypt incoming notes and generate diversified Sapling payment addresses.

Constants

• ZIP32_SAPLING_FVFP_PERSONALIZATION
• ZIP32_SAPLING_INT_PERSONALIZATION
• ZIP32_SAPLING_MASTER_PERSONALIZATION

Functions

• sapling_address
  Attempt to produce a payment address given the specified diversifier index, and return None if the specified index does not produce a valid diversifier.
• sapling_default_address
  Returns the payment address corresponding to the smallest valid diversifier index, along with that index.
• sapling_derive_internal_fvk
  Returns the internal full viewing key and diversifier key for the provided external FVK = (ak, nk, ovk) and dk encoded in a Unified FVK.
• sapling_find_address
  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.