tlsn_core/transcript/
hash.rs

1//! Plaintext hash commitments.
2
3use serde::{Deserialize, Serialize};
4
5use crate::{
6    hash::{Blinder, HashAlgId, HashAlgorithm, TypedHash},
7    transcript::{Direction, Idx},
8};
9
10/// Hashes plaintext with a blinder.
11///
12/// By convention, plaintext is hashed as `H(msg | blinder)`.
13pub fn hash_plaintext(hasher: &dyn HashAlgorithm, msg: &[u8], blinder: &Blinder) -> TypedHash {
14    TypedHash {
15        alg: hasher.id(),
16        value: hasher.hash_prefixed(msg, blinder.as_bytes()),
17    }
18}
19
20/// Hash of plaintext in the transcript.
21#[derive(Debug, Clone, PartialEq, Eq, Hash, Serialize, Deserialize)]
22pub struct PlaintextHash {
23    /// Direction of the plaintext.
24    pub direction: Direction,
25    /// Index of plaintext.
26    pub idx: Idx,
27    /// The hash of the data.
28    pub hash: TypedHash,
29}
30
31/// Secret component of [`PlaintextHash`].
32#[derive(Clone, Serialize, Deserialize)]
33pub struct PlaintextHashSecret {
34    /// Direction of the plaintext.
35    pub direction: Direction,
36    /// Index of plaintext.
37    pub idx: Idx,
38    /// The algorithm of the hash.
39    pub alg: HashAlgId,
40    /// Blinder for the hash.
41    pub blinder: Blinder,
42}
43
44opaque_debug::implement!(PlaintextHashSecret);
tlsn_core/transcript/hash.rs

tlsn_core/transcript/
hash.rs
