Struct HashChainEntry 

pub struct HashChainEntry {
    pub prev_hash: String,
    pub current_hash: String,
    pub entry: SqlAuditContext,
}

Audit log entry with a hash chain.

Each record contains:

• prev_hash: the current_hash of the previous record (the first record uses GENESIS_HASH)
• current_hash: the SHA-256 hash of this record (computed from prev_hash + entry)
• entry: the original audit context (already masked)

Any tampering with a historical record causes current_hash to mismatch the prev_hash of the next record, which is detected by verify_chain.

Fields

prev_hash: String

Hash of the previous record (the first record uses GENESIS_HASH)

current_hash: String

Hash of this record (SHA-256 hexadecimal string, 64 characters)

entry: SqlAuditContext

Original audit context (already masked)

Implementations

impl HashChainEntry

pub fn genesis(entry: SqlAuditContext) -> Self

Create the chain head record (prev_hash = GENESIS_HASH)

pub fn append(prev_hash: &str, entry: SqlAuditContext) -> Self

Append a record to the given previous hash

Trait Implementations

impl Clone for HashChainEntry

fn clone(&self) -> HashChainEntry

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for HashChainEntry

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for HashChainEntry

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for HashChainEntry

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.