com.github.jlangch.venice.util.crypt

Class FileHasher

java.lang.Object

com.github.jlangch.venice.util.crypt.FileHasher

public class FileHasher
extends java.lang.Object

Computes hashes from files and verifies file hashes to detect modified files.

Supports any algorithms supplied by the Java VM like MD5, SHA-1, SHA-512, ..

Note: MD5 is known as a weak cryptographic algorithm

Constructor Summary

Constructors

Constructor and Description
FileHasher()

Method Summary

Modifier and Type	Method and Description
static byte[]	decodeBase64(java.lang.String data)
static java.lang.String	encodeBase64(byte[] data)
static java.lang.String	hashFile(java.lang.String algorithm, java.lang.String salt, byte[] fileData)
static java.lang.String	hashFile(java.lang.String algorithm, java.lang.String salt, java.io.File inputFile)
static boolean	verifyFileHash(java.lang.String algorithm, java.lang.String salt, byte[] fileData, java.lang.String hash)
static boolean	verifyFileHash(java.lang.String algorithm, java.lang.String salt, java.io.File inputFile, java.lang.String hash)

Methods inherited from class java.lang.Object

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

Constructor Detail

FileHasher

public FileHasher()

Method Detail

hashFile

public static java.lang.String hashFile(java.lang.String algorithm,
                                        java.lang.String salt,
                                        java.io.File inputFile)
                                 throws java.lang.Exception

Throws:

java.lang.Exception

hashFile

public static java.lang.String hashFile(java.lang.String algorithm,
                                        java.lang.String salt,
                                        byte[] fileData)
                                 throws java.lang.Exception

Throws:

java.lang.Exception

verifyFileHash

public static boolean verifyFileHash(java.lang.String algorithm,
                                     java.lang.String salt,
                                     java.io.File inputFile,
                                     java.lang.String hash)
                              throws java.lang.Exception

Throws:

java.lang.Exception

verifyFileHash

public static boolean verifyFileHash(java.lang.String algorithm,
                                     java.lang.String salt,
                                     byte[] fileData,
                                     java.lang.String hash)
                              throws java.lang.Exception

Throws:

java.lang.Exception

encodeBase64

public static java.lang.String encodeBase64(byte[] data)

decodeBase64

public static byte[] decodeBase64(java.lang.String data)