public void encrypt(File srcFile, String password, File trgtFile)
throws FileNotFoundException, IOException {
FileInputStream fis = null;
FileWriter fw = null;
BufferedInputStream bis = null;
BufferedWriter bw = null;
byte[] buffer = null;
if (passwordEncoder.checkPassword(password)) {
StandardPBEByteEncryptor cipher = new StandardPBEByteEncryptor();
cipher.setAlgorithm(algorithm);
cipher.setPassword(password);
buffer = new byte[blockSize];
LOGGER.debug("blockSize = {}", blockSize);
try {
fis = new FileInputStream(srcFile);
bis = new BufferedInputStream(fis);
fw = new FileWriter(trgtFile);
bw = new BufferedWriter(fw);
byte[] encrypted = null;
int length = 0;
long size = 0L;
while ((length = bis.read(buffer)) >= 0) {
if (length < blockSize) {
byte[] tmp = new byte[length];
System.arraycopy(buffer, 0, tmp, 0, length);
encrypted = cipher.encrypt(tmp);
} else {
encrypted = cipher.encrypt(buffer);
}
String line;
try {
line = new String(base64.encode(encrypted), "US-ASCII");
} catch (Exception e) {
throw new RuntimeException(e);
}
bw.write(line);
bw.newLine();
size += length;
}
bw.flush();
LOGGER.debug("processed bytes = {}", size);
} finally {
EgovResourceReleaser.close(fw, bw, fis, bis);
}
} else {
LOGGER.error("password not matched!!!");
throw new IllegalArgumentException("password not matched!!!");
}
}
public byte[] encrypt(byte[] data, String password) {
if (passwordEncoder.checkPassword(password)) {
StandardPBEByteEncryptor cipher = new StandardPBEByteEncryptor();
cipher.setAlgorithm(algorithm);
cipher.setPassword(password);
return cipher.encrypt(data);
} else {
LOGGER.error("password not matched!!!");
throw new IllegalArgumentException("password not matched!!!");
}
}
public void decrypt(File encryptedFile, String password, File trgtFile)
throws FileNotFoundException, IOException {
FileReader fr = null;
FileOutputStream fos = null;
BufferedReader br = null;
BufferedOutputStream bos = null;
if (passwordEncoder.checkPassword(password)) {
StandardPBEByteEncryptor cipher = new StandardPBEByteEncryptor();
cipher.setAlgorithm(algorithm);
cipher.setPassword(password);
try {
fr = new FileReader(encryptedFile);
br = new BufferedReader(fr);
fos = new FileOutputStream(trgtFile);
bos = new BufferedOutputStream(fos);
byte[] encrypted = null;
byte[] decrypted = null;
String line = null;
while ((line = br.readLine()) != null) {
try {
encrypted = base64.decode(line.getBytes("US-ASCII"));
} catch (Exception e) {
throw new RuntimeException(e);
}
decrypted = cipher.decrypt(encrypted);
bos.write(decrypted);
}
bos.flush();
} finally {
EgovResourceReleaser.close(fos, bos, fr, br);
}
} else {
LOGGER.error("password not matched!!!");
throw new IllegalArgumentException("password not matched!!!");
}
}