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zcash_note_encryption
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Co-authored-by: Daira Hopwood <daira@jacaranda.org>

Extracted from: 4f22f1d578
This commit is contained in:
Kris Nuttycombe 2021-04-12 09:18:51 -06:00 committed by GitHub
parent e06b628f19
commit 4903214bfe
1 changed files with 6 additions and 4 deletions
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10
src/lib.rs
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@ -14,8 +14,9 @@ pub const COMPACT_NOTE_SIZE: usize = 1 + // version
pub const NOTE_PLAINTEXT_SIZE: usize = COMPACT_NOTE_SIZE + 512;
pub const OUT_PLAINTEXT_SIZE: usize = 32 + // pk_d
32; // esk
pub const ENC_CIPHERTEXT_SIZE: usize = NOTE_PLAINTEXT_SIZE + 16;
pub const OUT_CIPHERTEXT_SIZE: usize = OUT_PLAINTEXT_SIZE + 16;
pub const AEAD_TAG_SIZE: usize = 16;
pub const ENC_CIPHERTEXT_SIZE: usize = NOTE_PLAINTEXT_SIZE + AEAD_TAG_SIZE;
pub const OUT_CIPHERTEXT_SIZE: usize = OUT_PLAINTEXT_SIZE + AEAD_TAG_SIZE;
/// A symmetric key that can be used to recover a single Sapling or Orchard output.
pub struct OutgoingCipherKey(pub [u8; 32]);
@ -159,7 +160,8 @@ pub trait ShieldedOutput<'a, D: Domain> {
/// enforces that fresh ephemeral keys are used for every note, and that the ciphertexts are
/// consistent with each other.
///
/// Implements section 4.17.1 of the Zcash Protocol Specification.
/// Implements section 4.19 of the Zcash Protocol Specification.
/// <https://zips.z.cash/protocol/nu5.pdf#saplingandorchardinband>
/// NB: the example code is only covering the pre-Canopy case.
///
/// # Examples
@ -248,7 +250,7 @@ impl<D: Domain> NoteEncryption<D> {
&self.esk
}
/// Exposes the ephemeral public key being used to encrypt this note.
/// Exposes the encoding of the ephemeral public key being used to encrypt this note.
pub fn epk(&self) -> &D::EphemeralPublicKey {
&self.epk
}