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keyfork-shard: clean up documentation for encrypted shard padding

This commit is contained in:
Ryan Heywood 2024-05-03 22:41:38 -04:00
parent e0687434ef
commit 1a036a0b5f
Signed by: ryan
GPG Key ID: 8E401478A3FBEF72
1 changed files with 6 additions and 4 deletions
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10
crates/keyfork-shard/src/lib.rs
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@ -25,9 +25,11 @@ use sha2::Sha256;
use sharks::{Share, Sharks}; use sharks::{Share, Sharks};
use x25519_dalek::{EphemeralSecret, PublicKey}; use x25519_dalek::{EphemeralSecret, PublicKey};
// 32-byte share, 1-byte index, 1-byte threshold, 1-byte version == 36 bytes const PLAINTEXT_LENGTH: u8 = 32 // shard
// Encrypted, is 52 bytes + 1 // index
const PLAINTEXT_LENGTH: u8 = 36; + 1 // threshold
+ 1 // version
+ 1; // length;
const ENCRYPTED_LENGTH: u8 = PLAINTEXT_LENGTH + 16; const ENCRYPTED_LENGTH: u8 = PLAINTEXT_LENGTH + 16;
#[cfg(feature = "openpgp")] #[cfg(feature = "openpgp")]
@ -271,7 +273,7 @@ pub trait Format {
payload.insert(1, threshold); payload.insert(1, threshold);
assert!( assert!(
payload.len() < PLAINTEXT_LENGTH as usize, payload.len() < PLAINTEXT_LENGTH as usize,
"invalid share length (too long, max {PLAINTEXT_LENGTH} bytes)" "invalid share length (too long, must be less than {PLAINTEXT_LENGTH} bytes)"
); );
// convert plaintext to static-size payload // convert plaintext to static-size payload