本文整理汇总了Java中javax.crypto.spec.DESedeKeySpec.DES_EDE_KEY_LEN属性的典型用法代码示例。如果您正苦于以下问题：Java DESedeKeySpec.DES_EDE_KEY_LEN属性的具体用法？Java DESedeKeySpec.DES_EDE_KEY_LEN怎么用？Java DESedeKeySpec.DES_EDE_KEY_LEN使用的例子？那么, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类javax.crypto.spec.DESedeKeySpec的用法示例。
在下文中一共展示了DESedeKeySpec.DES_EDE_KEY_LEN属性的8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: DESedeKey
/**
* Uses the first 24 bytes in <code>key</code>, beginning at
* <code>offset</code>, as the DES-EDE key
*
* @param key the buffer with the DES-EDE key
* @param offset the offset in <code>key</code>, where the DES-EDE key
* starts
*
* @exception InvalidKeyException if the given key has a wrong size
*/
DESedeKey(byte[] key, int offset) throws InvalidKeyException {
if (key==null || ((key.length-offset)<DESedeKeySpec.DES_EDE_KEY_LEN)) {
throw new InvalidKeyException("Wrong key size");
}
this.key = new byte[DESedeKeySpec.DES_EDE_KEY_LEN];
System.arraycopy(key, offset, this.key, 0,
DESedeKeySpec.DES_EDE_KEY_LEN);
DESKeyGenerator.setParityBit(this.key, 0);
DESKeyGenerator.setParityBit(this.key, 8);
DESKeyGenerator.setParityBit(this.key, 16);
// Use the cleaner to zero the key when no longer referenced
final byte[] k = this.key;
CleanerFactory.cleaner().register(this,
() -> java.util.Arrays.fill(k, (byte)0x00));
}
示例2: doKeyGeneration
@Override
protected byte[] doKeyGeneration(int keyBytes) {
byte[] keyData = new byte[DESedeKeySpec.DES_EDE_KEY_LEN];
secureRandom.nextBytes(keyData);
// Set the parity bit for each byte
for (int i = 0; i < keyData.length; i++) {
if (Integer.bitCount(keyData[i]) % 2 == 0) {
keyData[i] = (byte) (keyData[i] ^ 1);
}
}
if (keyBytes == 14) {
// The user requested an A-B-A key
System.arraycopy(keyData, 0, keyData, 16, 8);
}
return keyData;
}
示例3: generateKeyData
public byte[] generateKeyData() throws NoSuchAlgorithmException
{
SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
random.setSeed(System.currentTimeMillis());
byte bytes[] = new byte[DESedeKeySpec.DES_EDE_KEY_LEN];
random.nextBytes(bytes);
return bytes;
}
示例4: generateKeyData
public byte[] generateKeyData()
{
try
{
SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
random.setSeed(System.currentTimeMillis());
byte bytes[] = new byte[DESedeKeySpec.DES_EDE_KEY_LEN];
random.nextBytes(bytes);
return bytes;
}
catch(Exception e)
{
throw new RuntimeException("Unable to generate secret key", e);
}
}
示例5: generateKeyData
private byte[] generateKeyData()
{
try
{
SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
byte bytes[] = new byte[DESedeKeySpec.DES_EDE_KEY_LEN];
random.nextBytes(bytes);
return bytes;
}
catch(Exception e)
{
throw new RuntimeException("Unable to generate secret key", e);
}
}
示例6: DESedeKey
/**
* Uses the first 24 bytes in <code>key</code>, beginning at
* <code>offset</code>, as the DES-EDE key
*
* @param key the buffer with the DES-EDE key
* @param offset the offset in <code>key</code>, where the DES-EDE key
* starts
*
* @exception InvalidKeyException if the given key has a wrong size
*/
DESedeKey(byte[] key, int offset) throws InvalidKeyException {
if (key==null || ((key.length-offset)<DESedeKeySpec.DES_EDE_KEY_LEN)) {
throw new InvalidKeyException("Wrong key size");
}
this.key = new byte[DESedeKeySpec.DES_EDE_KEY_LEN];
System.arraycopy(key, offset, this.key, 0,
DESedeKeySpec.DES_EDE_KEY_LEN);
DESKeyGenerator.setParityBit(this.key, 0);
DESKeyGenerator.setParityBit(this.key, 8);
DESKeyGenerator.setParityBit(this.key, 16);
}
示例7: engineGenerateKey
/**
* Generates the Triple DES key.
*
* @return the new Triple DES key
*/
protected SecretKey engineGenerateKey() {
if (this.random == null) {
this.random = SunJCE.getRandom();
}
byte[] rawkey = new byte[DESedeKeySpec.DES_EDE_KEY_LEN];
if (keysize == 168) {
// 3 intermediate keys
this.random.nextBytes(rawkey);
// Do parity adjustment for each intermediate key
DESKeyGenerator.setParityBit(rawkey, 0);
DESKeyGenerator.setParityBit(rawkey, 8);
DESKeyGenerator.setParityBit(rawkey, 16);
} else {
// 2 intermediate keys
byte[] tmpkey = new byte[16];
this.random.nextBytes(tmpkey);
DESKeyGenerator.setParityBit(tmpkey, 0);
DESKeyGenerator.setParityBit(tmpkey, 8);
System.arraycopy(tmpkey, 0, rawkey, 0, tmpkey.length);
// Copy the first 8 bytes into the last
System.arraycopy(tmpkey, 0, rawkey, 16, 8);
java.util.Arrays.fill(tmpkey, (byte)0x00);
}
DESedeKey desEdeKey = null;
try {
desEdeKey = new DESedeKey(rawkey);
} catch (InvalidKeyException ike) {
// this never happens
throw new RuntimeException(ike.getMessage());
}
java.util.Arrays.fill(rawkey, (byte)0x00);
return desEdeKey;
}
示例8: engineGenerateKey
/**
* Generates the Triple DES key.
*
* @return the new Triple DES key
*/
protected SecretKey engineGenerateKey() {
if (this.random == null) {
this.random = SunJCE.RANDOM;
}
byte[] rawkey = new byte[DESedeKeySpec.DES_EDE_KEY_LEN];
if (keysize == 168) {
// 3 intermediate keys
this.random.nextBytes(rawkey);
// Do parity adjustment for each intermediate key
DESKeyGenerator.setParityBit(rawkey, 0);
DESKeyGenerator.setParityBit(rawkey, 8);
DESKeyGenerator.setParityBit(rawkey, 16);
} else {
// 2 intermediate keys
byte[] tmpkey = new byte[16];
this.random.nextBytes(tmpkey);
DESKeyGenerator.setParityBit(tmpkey, 0);
DESKeyGenerator.setParityBit(tmpkey, 8);
System.arraycopy(tmpkey, 0, rawkey, 0, tmpkey.length);
// Copy the first 8 bytes into the last
System.arraycopy(tmpkey, 0, rawkey, 16, 8);
java.util.Arrays.fill(tmpkey, (byte)0x00);
}
DESedeKey desEdeKey = null;
try {
desEdeKey = new DESedeKey(rawkey);
} catch (InvalidKeyException ike) {
// this never happens
throw new RuntimeException(ike.getMessage());
}
java.util.Arrays.fill(rawkey, (byte)0x00);
return desEdeKey;
}