Class TamperEvidentAuditSink

java.lang.Object

org.j7m.middleware.security.defaults.TamperEvidentAuditSink

All Implemented Interfaces:

org.j7m.middleware.security.api.SecurityAuditSink

public final class TamperEvidentAuditSink
extends Object
implements org.j7m.middleware.security.api.SecurityAuditSink

Bounded in-memory tamper-evident audit sink.

The sink is thread-safe. It records redacted audit events in a SHA-256 hash chain with sequence numbers and periodic checkpoint hashes. The bounded implementation is intended for tests, demos, and local evidence capture; a production deployment should attach a WormAuditSink implementation for external immutable storage.

Constructor Summary

Constructors

Constructor	Description
TamperEvidentAuditSink(int capacity, int checkpointInterval)	Creates a bounded audit sink.

Method Summary

Modifier and Type	Method	Description
List<TamperEvidentAuditRecord>	chain()	Returns recent hash-chain records.
long	eventCount()
String	exportChain()	Exports retained records as newline-delimited text.
List<org.j7m.middleware.security.api.AuditEvent>	recentEvents()
void	record(org.j7m.middleware.security.api.AuditEvent event)
AuditChainVerificationResult	verify()	Verifies the retained chain.
static AuditChainVerificationResult	verify(List<TamperEvidentAuditRecord> chain)	Verifies a supplied chain snapshot.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

TamperEvidentAuditSink

public TamperEvidentAuditSink(int capacity,
 int checkpointInterval)

Creates a bounded audit sink.

Parameters:

capacity - retained record capacity

checkpointInterval - checkpoint interval

Method Details

record

public void record(org.j7m.middleware.security.api.AuditEvent event)

Specified by:

record in interface org.j7m.middleware.security.api.SecurityAuditSink

recentEvents

public List<org.j7m.middleware.security.api.AuditEvent> recentEvents()

Specified by:

recentEvents in interface org.j7m.middleware.security.api.SecurityAuditSink

eventCount

public long eventCount()

Specified by:

eventCount in interface org.j7m.middleware.security.api.SecurityAuditSink

chain

public List<TamperEvidentAuditRecord> chain()

Returns recent hash-chain records.

Returns:

immutable record list

verify

public AuditChainVerificationResult verify()

Verifies the retained chain.

Returns:

verification result

exportChain

public String exportChain()

Exports retained records as newline-delimited text.

Returns:

safe export text

verify

public static AuditChainVerificationResult verify(List<TamperEvidentAuditRecord> chain)

Verifies a supplied chain snapshot.

Parameters:

chain - chain records

Returns:

verification result