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Password: Knf@123 Encrypted text: 4DTHqnctCuk= Decrypted text: Knf@123 2-misol: Blowfish yordamida fayllarni shifrlash va shifrni ochish import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.InputStream; import java.io.OutputStream; import java.security.Key; import javax.crypto.Cipher; import javax.crypto.spec.SecretKeySpec; public class BlowfishFileEncryptionDemo { private static final String ALGORITHM = "Blowfish"; private static String key= "knowledgefactory"; private static final String SAMPLE_FILE_PATH = "/home/user/Desktop/cryptotest/Sample.txt"; private static final String ENCRYPTED_FILE_PATH = "/home/user/Desktop/cryptotest/file.encrypted"; private static final String DECRYPTED_FILE_PATH = "/home/user/Desktop/cryptotest/decryptedfile.txt"; public static void main(String[] args) { File sampleFile = new File(SAMPLE_FILE_PATH); File encryptedFile = new File(ENCRYPTED_FILE_PATH); File decryptedFile = new File(DECRYPTED_FILE_PATH); try { BlowfishFileEncryptionDemo.encrypt(sampleFile, encryptedFile); BlowfishFileEncryptionDemo.decrypt(encryptedFile, decryptedFile); } catch (Exception e) { e.printStackTrace(); } } public static void encrypt(File sampleFile, File outputFile) throws Exception { doCrypto(Cipher.ENCRYPT_MODE, sampleFile, outputFile); } public static void decrypt(File sampleFile, File outputFile) throws Exception { doCrypto(Cipher.DECRYPT_MODE, sampleFile, outputFile); } private static void doCrypto(int cipherMode, File sampleFile, File outputFile) throws Exception { Key secretKey = new SecretKeySpec(key.getBytes(), ALGORITHM); Cipher cipher = Cipher.getInstance(ALGORITHM); cipher.init(cipherMode, secretKey); InputStream inputStream = new FileInputStream(sampleFile); byte[] inputBytes = new byte[(int) sampleFile.length()]; inputStream.read(inputBytes); byte[] outputBytes = cipher.doFinal(inputBytes); OutputStream outputStream = new FileOutputStream(outputFile); outputStream.write(outputBytes); inputStream.close(); outputStream.close(); } } Download 0.76 Mb. Do'stlaringiz bilan baham: |
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