本文整理汇总了Java中org.bouncycastle.crypto.params.DESedeParameters.DES_EDE_KEY_LENGTH属性的典型用法代码示例。如果您正苦于以下问题：Java DESedeParameters.DES_EDE_KEY_LENGTH属性的具体用法？Java DESedeParameters.DES_EDE_KEY_LENGTH怎么用？Java DESedeParameters.DES_EDE_KEY_LENGTH使用的例子？那么恭喜您, 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org.bouncycastle.crypto.params.DESedeParameters的用法示例。
在下文中一共展示了DESedeParameters.DES_EDE_KEY_LENGTH属性的4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: generateDESKey
/**
* Generate des key.
*
* @param file the file
* @throws java.io.IOException Signals that an I/O exception has occurred.
*/
public static void generateDESKey(String file) throws IOException {
DESedeKeyGenerator kg = new DESedeKeyGenerator();
KeyGenerationParameters kgp = new KeyGenerationParameters(
new SecureRandom(),
DESedeParameters.DES_EDE_KEY_LENGTH * 8);
kg.init(kgp);
byte[] key = kg.generateKey();
BufferedOutputStream keystream =
new BufferedOutputStream(new FileOutputStream(file));
byte[] keyhex = Hex.encode(key);
keystream.write(keyhex, 0, keyhex.length);
keystream.flush();
keystream.close();
}
示例2: init
/**
* initialise the key generator - if strength is set to zero
* the key generated will be 192 bits in size, otherwise
* strength can be 128 or 192 (or 112 or 168 if you don't count
* parity bits), depending on whether you wish to do 2-key or 3-key
* triple DES.
*
* @param param the parameters to be used for key generation
*/
public void init(
KeyGenerationParameters param)
{
this.random = param.getRandom();
this.strength = (param.getStrength() + 7) / 8;
if (strength == 0 || strength == (168 / 8))
{
strength = DESedeParameters.DES_EDE_KEY_LENGTH;
}
else if (strength == (112 / 8))
{
strength = 2 * DESedeParameters.DES_KEY_LENGTH;
}
else if (strength != DESedeParameters.DES_EDE_KEY_LENGTH
&& strength != (2 * DESedeParameters.DES_KEY_LENGTH))
{
throw new IllegalArgumentException("DESede key must be "
+ (DESedeParameters.DES_EDE_KEY_LENGTH * 8) + " or "
+ (2 * 8 * DESedeParameters.DES_KEY_LENGTH)
+ " bits long.");
}
}
示例3: init
/**
* initialise the key generator - if strength is set to zero
* the key generated will be 192 bits in size, otherwise
* strength can be 128 or 192 (or 112 or 168 if you don't count
* parity bits), depending on whether you wish to do 2-key or 3-key
* triple DES.
*
* @param param the parameters to be used for key generation
*/
public void init(
KeyGenerationParameters param)
{
super.init(param);
if (strength == 0 || strength == (168 / 8))
{
strength = DESedeParameters.DES_EDE_KEY_LENGTH;
}
else if (strength == (112 / 8))
{
strength = 2 * DESedeParameters.DES_KEY_LENGTH;
}
else if (strength != DESedeParameters.DES_EDE_KEY_LENGTH
&& strength != (2 * DESedeParameters.DES_KEY_LENGTH))
{
throw new IllegalArgumentException("DESede key must be "
+ (DESedeParameters.DES_EDE_KEY_LENGTH * 8) + " or "
+ (2 * 8 * DESedeParameters.DES_KEY_LENGTH)
+ " bits long.");
}
}
示例4: create
public static KeyGenerator create() {
final SecureRandom random = new SecureRandom();
final KeyGenerationParameters parameters = new KeyGenerationParameters(
random,
DESedeParameters.DES_EDE_KEY_LENGTH * 8);
final DESedeKeyGenerator keyGenerator = new DESedeKeyGenerator();
keyGenerator.init(parameters);
return new KeyGenerator(keyGenerator);
}