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zcash_note_encryption
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zcash_note_encryption: Fix array size in Domain::extract_{esk, pk_d} 

Decrypted output size is `OUT_PLAINTEXT_BYTES`, which the decryptor
can always provide (either by decrypting into the correct size array
as now, or truncating the buffer before passing it to the domain).


Extracted from: 362838c3fa
This commit is contained in:
Jack Grigg 2021-05-28 23:48:03 +01:00
parent 18e290dbc0
commit 1385c8cc41
1 changed files with 3 additions and 3 deletions
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6
src/lib.rs
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@ -148,10 +148,10 @@ pub trait Domain {
fn extract_memo(&self, plaintext: &[u8]) -> Self::Memo;
fn extract_pk_d(
out_plaintext: &[u8; OUT_CIPHERTEXT_SIZE],
out_plaintext: &[u8; OUT_PLAINTEXT_SIZE],
) -> Option<Self::DiversifiedTransmissionKey>;
fn extract_esk(out_plaintext: &[u8; OUT_CIPHERTEXT_SIZE]) -> Option<Self::EphemeralSecretKey>;
fn extract_esk(out_plaintext: &[u8; OUT_PLAINTEXT_SIZE]) -> Option<Self::EphemeralSecretKey>;
}
pub trait ShieldedOutput<D: Domain> {
@ -477,7 +477,7 @@ pub fn try_output_recovery_with_ock<D: Domain, Output: ShieldedOutput<D>>(
assert_eq!(output.enc_ciphertext().len(), ENC_CIPHERTEXT_SIZE);
assert_eq!(out_ciphertext.len(), OUT_CIPHERTEXT_SIZE);
let mut op = [0; OUT_CIPHERTEXT_SIZE];
let mut op = [0; OUT_PLAINTEXT_SIZE];
assert_eq!(
ChachaPolyIetf::aead_cipher()
.open_to(&mut op, &out_ciphertext, &[], ock.as_ref(), &[0u8; 12])