File Integrity Checker for JAVA

Extendable file integrity checker for JAVA.

How to install in your project?

Maven repo:

<repositories>
    <repository>
        <id>karsany-repo</id>
        <name>karsany Repository</name>
        <url>http://maven.karsany.hu/maven/</url>
    </repository>
</repositories>

Maven dependency:

    <dependency>
        <groupId>hu.karsany</groupId>
        <artifactId>file-integrity-check</artifactId>
        <version>1.0-SNAPSHOT</version>
    </dependency>

How to use it?

// example logger for various events
final IntegrityCheckListener integrityCheckListener = new IntegrityCheckListener() {
	@Override
	public void newFile(IntegrityCheckedFile integrityCheckedFile) {
		System.out.println("New file: " + integrityCheckedFile.file().getAbsolutePath() + " " + integrityCheckedFile.hash());
	}

	public void hashChanged(IntegrityCheckedFile integrityCheckedFile, String oldHash) {
		System.out.println("Hash Changed: " + integrityCheckedFile.file().getAbsolutePath() + " from: " + oldHash + " to: " + integrityCheckedFile.hash());
	}

	public void hashUnchanged(IntegrityCheckedFile integrityCheckedFile) {
		System.out.println("Hash OK: " + integrityCheckedFile.file().getAbsolutePath());
	}
};

// digest strategy - use the SaltedSha256DigestStrategy or implement your own
final DigestStrategy digest = new SaltedSha256DigestStrategy("THIS_IS_A_SALT_FOR_THE_HASH");

// integrity database interfae - use the PropertiesIntegrityDatabase or implement your own
final IntegrityDatabase integrityDB = new PropertiesFileIntegrityDatabase(new File("check.properties"));

// init the file integrity check
final FileIntegrityCheck fileIntegrityCheck = new FileIntegrityCheck(integrityCheckListener, digest, integrityDB);

// check the file, as you want
fileIntegrityCheck.check(new File("pom.xml"));