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KeyCrypterScrypt: Fix some minor code style issues.

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This commit is contained in:
Mike Hearn 2013-07-10 16:27:01 +02:00
parent 53dc5c2e6a
commit 48cee2e668
1 changed files with 11 additions and 10 deletions
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21
core/src/main/java/com/google/bitcoin/crypto/KeyCrypterScrypt.java
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@ -15,7 +15,6 @@
*/ */
package com.google.bitcoin.crypto; package com.google.bitcoin.crypto;
import com.google.common.base.Preconditions;
import com.google.protobuf.ByteString; import com.google.protobuf.ByteString;
import com.lambdaworks.crypto.SCrypt; import com.lambdaworks.crypto.SCrypt;
import org.bitcoinj.wallet.Protos; import org.bitcoinj.wallet.Protos;
@ -33,6 +32,8 @@ import org.spongycastle.crypto.params.ParametersWithIV;
import java.io.Serializable; import java.io.Serializable;
import java.security.SecureRandom; import java.security.SecureRandom;
import static com.google.common.base.Preconditions.checkNotNull;
/** /**
* <p>This class encrypts and decrypts byte arrays and strings using scrypt as the * <p>This class encrypts and decrypts byte arrays and strings using scrypt as the
* key derivation function and AES for the encryption.</p> * key derivation function and AES for the encryption.</p>
@ -67,10 +68,10 @@ public class KeyCrypterScrypt implements KeyCrypter, Serializable {
*/ */
public static final int SALT_LENGTH = 8; public static final int SALT_LENGTH = 8;
transient private static SecureRandom secureRandom = new SecureRandom(); private static final transient SecureRandom secureRandom = new SecureRandom();
// Scrypt parameters. // Scrypt parameters.
transient private ScryptParameters scryptParameters; private final transient ScryptParameters scryptParameters;
/** /**
* Encryption/ Decryption using default parameters and a random salt * Encryption/ Decryption using default parameters and a random salt
@ -89,7 +90,7 @@ public class KeyCrypterScrypt implements KeyCrypter, Serializable {
* @throws NullPointerException if the scryptParameters or any of its N, R or P is null. * @throws NullPointerException if the scryptParameters or any of its N, R or P is null.
*/ */
public KeyCrypterScrypt(ScryptParameters scryptParameters) { public KeyCrypterScrypt(ScryptParameters scryptParameters) {
this.scryptParameters = Preconditions.checkNotNull(scryptParameters); this.scryptParameters = checkNotNull(scryptParameters);
// Check there is a non-empty salt. // Check there is a non-empty salt.
// (Some early MultiBit wallets has a missing salt so it is not a hard fail). // (Some early MultiBit wallets has a missing salt so it is not a hard fail).
if (scryptParameters.getSalt() == null if (scryptParameters.getSalt() == null
@ -139,8 +140,8 @@ public class KeyCrypterScrypt implements KeyCrypter, Serializable {
*/ */
@Override @Override
public EncryptedPrivateKey encrypt(byte[] plainBytes, KeyParameter aesKey) throws KeyCrypterException { public EncryptedPrivateKey encrypt(byte[] plainBytes, KeyParameter aesKey) throws KeyCrypterException {
Preconditions.checkNotNull(plainBytes); checkNotNull(plainBytes);
Preconditions.checkNotNull(aesKey); checkNotNull(aesKey);
try { try {
// Generate iv - each encryption call has a different iv. // Generate iv - each encryption call has a different iv.
@ -173,8 +174,8 @@ public class KeyCrypterScrypt implements KeyCrypter, Serializable {
*/ */
@Override @Override
public byte[] decrypt(EncryptedPrivateKey privateKeyToDecode, KeyParameter aesKey) throws KeyCrypterException { public byte[] decrypt(EncryptedPrivateKey privateKeyToDecode, KeyParameter aesKey) throws KeyCrypterException {
Preconditions.checkNotNull(privateKeyToDecode); checkNotNull(privateKeyToDecode);
Preconditions.checkNotNull(aesKey); checkNotNull(aesKey);
try { try {
ParametersWithIV keyWithIv = new ParametersWithIV(new KeyParameter(aesKey.getKey()), privateKeyToDecode.getInitialisationVector()); ParametersWithIV keyWithIv = new ParametersWithIV(new KeyParameter(aesKey.getKey()), privateKeyToDecode.getInitialisationVector());
@ -204,8 +205,8 @@ public class KeyCrypterScrypt implements KeyCrypter, Serializable {
* *
* Note: a String.getBytes() is not used to avoid creating a String of the password in the JVM. * Note: a String.getBytes() is not used to avoid creating a String of the password in the JVM.
*/ */
private byte[] convertToByteArray(CharSequence charSequence) { private static byte[] convertToByteArray(CharSequence charSequence) {
Preconditions.checkNotNull(charSequence); checkNotNull(charSequence);
byte[] byteArray = new byte[charSequence.length() << 1]; byte[] byteArray = new byte[charSequence.length() << 1];
for(int i = 0; i < charSequence.length(); i++) { for(int i = 0; i < charSequence.length(); i++) {