本文整理汇总了Java中org.apache.hadoop.crypto.Decryptor.init方法的典型用法代码示例。如果您正苦于以下问题：Java Decryptor.init方法的具体用法？Java Decryptor.init怎么用？Java Decryptor.init使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.hadoop.crypto.Decryptor的用法示例。
在下文中一共展示了Decryptor.init方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: decryptEncryptedKey
import org.apache.hadoop.crypto.Decryptor; //导入方法依赖的package包/类
@Override
public KeyVersion decryptEncryptedKey(
EncryptedKeyVersion encryptedKeyVersion) throws IOException,
GeneralSecurityException {
// Fetch the encryption key material
final String encryptionKeyVersionName =
encryptedKeyVersion.getEncryptionKeyVersionName();
final KeyVersion encryptionKey =
keyProvider.getKeyVersion(encryptionKeyVersionName);
Preconditions.checkNotNull(encryptionKey,
"KeyVersion name '%s' does not exist", encryptionKeyVersionName);
Preconditions.checkArgument(
encryptedKeyVersion.getEncryptedKeyVersion().getVersionName()
.equals(KeyProviderCryptoExtension.EEK),
"encryptedKey version name must be '%s', is '%s'",
KeyProviderCryptoExtension.EEK,
encryptedKeyVersion.getEncryptedKeyVersion().getVersionName()
);
// Encryption key IV is determined from encrypted key's IV
final byte[] encryptionIV =
EncryptedKeyVersion.deriveIV(encryptedKeyVersion.getEncryptedKeyIv());
CryptoCodec cc = CryptoCodec.getInstance(keyProvider.getConf());
Decryptor decryptor = cc.createDecryptor();
decryptor.init(encryptionKey.getMaterial(), encryptionIV);
final KeyVersion encryptedKV =
encryptedKeyVersion.getEncryptedKeyVersion();
int keyLen = encryptedKV.getMaterial().length;
ByteBuffer bbIn = ByteBuffer.allocateDirect(keyLen);
ByteBuffer bbOut = ByteBuffer.allocateDirect(keyLen);
bbIn.put(encryptedKV.getMaterial());
bbIn.flip();
decryptor.decrypt(bbIn, bbOut);
bbOut.flip();
byte[] decryptedKey = new byte[keyLen];
bbOut.get(decryptedKey);
return new KeyVersion(encryptionKey.getName(), EK, decryptedKey);
}
示例2: decryptEncryptedKey
import org.apache.hadoop.crypto.Decryptor; //导入方法依赖的package包/类
@Override
public KeyVersion decryptEncryptedKey(
EncryptedKeyVersion encryptedKeyVersion) throws IOException,
GeneralSecurityException {
// Fetch the encryption key material
final String encryptionKeyVersionName =
encryptedKeyVersion.getEncryptionKeyVersionName();
final KeyVersion encryptionKey = keyProvider instanceof KeyPairProvider ?
((KeyPairProvider) keyProvider).getKeyPairVersion(encryptionKeyVersionName).privateToKeyVersion() :
keyProvider.getKeyVersion(encryptionKeyVersionName);
Preconditions.checkNotNull(encryptionKey,
"KeyVersion name '%s' does not exist", encryptionKeyVersionName);
Preconditions.checkArgument(
encryptedKeyVersion.getEncryptedKeyVersion().getVersionName()
.equals(KeyProviderCryptoExtension.EEK),
"encryptedKey version name must be '%s', is '%s'",
KeyProviderCryptoExtension.EEK,
encryptedKeyVersion.getEncryptedKeyVersion().getVersionName()
);
// Encryption key IV is determined from encrypted key's IV
final byte[] encryptionIV =
EncryptedKeyVersion.deriveIV(encryptedKeyVersion.getEncryptedKeyIv());
Metadata metadata = keyProvider.getMetadata(encryptedKeyVersion.getEncryptionKeyName());
CryptoCodec cc = CryptoCodec.getInstance(keyProvider.getConf());
Decryptor decryptor = cc.createDecryptor();
decryptor.init(encryptionKey.getMaterial(), encryptionIV);
final KeyVersion encryptedKV =
encryptedKeyVersion.getEncryptedKeyVersion();
int encryptedKeyLen = encryptedKV.getMaterial().length;
int keyLen = metadata.getBitLength() / 8;
/*
System.err.println("cc" + cc.getClass().toString() +
" encryption key " + encryptionKey.getMaterial().length +
" key material len " + encryptedKeyLen +
" key meta len " + keyLen + " ecnryption iv " + encryptionIV.length);
*/
ByteBuffer bbIn = ByteBuffer.allocateDirect(encryptedKeyLen);
ByteBuffer bbOut = ByteBuffer.allocateDirect(encryptedKeyLen);
// System.err.println("encrypted len " + encryptedKeyLen + " key len " + keyLen);
bbIn.put(encryptedKV.getMaterial());
bbIn.flip();
decryptor.decrypt(bbIn, bbOut);
byte[] decryptedKey = new byte[keyLen];
bbOut.get(decryptedKey);
return new KeyVersion(encryptionKey.getName(), EK, decryptedKey);
}