canic-core 0.65.19

Canic — a canister orchestration and management toolkit for the Internet Computer
Documentation 
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use super::ROLE_ATTESTATION_SIGNING_DOMAIN;
use crate::{
    InternalError,
    dto::auth::RoleAttestation,
    ops::{auth::AuthValidationError, prelude::*},
};
use candid::encode_one;
use sha2::{Digest, Sha256};

pub(super) fn encode_candid<T: CandidType>(
    context: &'static str,
    value: &T,
) -> Result<Vec<u8>, InternalError> {
    encode_one(value).map_err(|err| {
        AuthValidationError::EncodeFailed {
            context,
            source: err,
        }
        .into()
    })
}

pub(super) fn role_attestation_hash(
    attestation: &RoleAttestation,
) -> Result<[u8; 32], InternalError> {
    let payload = encode_candid("role attestation", attestation)?;
    Ok(domain_separated_hash(
        ROLE_ATTESTATION_SIGNING_DOMAIN,
        payload,
    ))
}

fn domain_separated_hash(domain: &[u8], payload: Vec<u8>) -> [u8; 32] {
    let mut hasher = Sha256::new();
    hasher.update(domain);
    hasher.update(payload);
    hasher.finalize().into()
}