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Use ChaCha20 instead of ChaCha12

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Despite being slower and only used for blinding values, its still 
extremely performant. 20 is far more standard and will avoid an eye 
raise from reviewers.
This commit is contained in:
Luke Parker
2022-08-30 20:01:46 -04:00
parent 6093f4ec93
commit c5256d9b06
3 changed files with 7 additions and 7 deletions
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8
coins/monero/src/wallet/send/multisig.rs
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@@ -5,7 +5,7 @@ use std::{
};
use rand_core::{RngCore, CryptoRng, SeedableRng};
use rand_chacha::ChaCha12Rng;
use rand_chacha::ChaCha20Rng;
use curve25519_dalek::{
traits::Identity,
@@ -140,7 +140,7 @@ impl SignableTransaction {
let decoys = Decoys::select(
// Using a seeded RNG with a specific height, committed to above, should make these decoys
// committed to. They'll also be committed to later via the TX message as a whole
&mut ChaCha12Rng::from_seed(transcript.rng_seed(b"decoys")),
&mut ChaCha20Rng::from_seed(transcript.rng_seed(b"decoys")),
rpc,
self.protocol.ring_len(),
height,
@@ -288,7 +288,7 @@ impl SignMachine<Transaction> for TransactionSignMachine {
sorted_images.sort_by(key_image_sort);
self.signable.prepare_transaction(
&mut ChaCha12Rng::from_seed(self.transcript.rng_seed(b"transaction_keys_bulletproofs")),
&mut ChaCha20Rng::from_seed(self.transcript.rng_seed(b"transaction_keys_bulletproofs")),
uniqueness(
&sorted_images
.iter()
@@ -312,7 +312,7 @@ impl SignMachine<Transaction> for TransactionSignMachine {
}
sorted.sort_by(|x, y| key_image_sort(&x.0, &y.0));
let mut rng = ChaCha12Rng::from_seed(self.transcript.rng_seed(b"pseudo_out_masks"));
let mut rng = ChaCha20Rng::from_seed(self.transcript.rng_seed(b"pseudo_out_masks"));
let mut sum_pseudo_outs = Scalar::zero();
while !sorted.is_empty() {
let value = sorted.remove(0);