本文整理汇总了Java中javax.crypto.Cipher.WRAP_MODE属性的典型用法代码示例。如果您正苦于以下问题：Java Cipher.WRAP_MODE属性的具体用法？Java Cipher.WRAP_MODE怎么用？Java Cipher.WRAP_MODE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javax.crypto.Cipher的用法示例。
在下文中一共展示了Cipher.WRAP_MODE属性的6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: engineGetOutputSize
public int engineGetOutputSize(int inputLen)
{
int len1, len2, len3;
len1 = engine.getMac().getMacSize();
if (key != null)
{
len2 = 1 + 2 * (((ECKey)key).getParameters().getCurve().getFieldSize() + 7) / 8;
}
else
{
throw new IllegalStateException("cipher not initialised");
}
if (engine.getCipher() == null)
{
len3 = inputLen;
}
else if (state == Cipher.ENCRYPT_MODE || state == Cipher.WRAP_MODE)
{
len3 = engine.getCipher().getOutputSize(inputLen);
}
else if (state == Cipher.DECRYPT_MODE || state == Cipher.UNWRAP_MODE)
{
len3 = engine.getCipher().getOutputSize(inputLen - len1 - len2);
}
else
{
throw new IllegalStateException("cipher not initialised");
}
if (state == Cipher.ENCRYPT_MODE || state == Cipher.WRAP_MODE)
{
return buffer.size() + len1 + len2 + len3;
}
else if (state == Cipher.DECRYPT_MODE || state == Cipher.UNWRAP_MODE)
{
return buffer.size() - len1 - len2 + len3;
}
else
{
throw new IllegalStateException("cipher not initialised");
}
}
示例2: engineGetOutputSize
protected int engineGetOutputSize(
int inputLen)
{
if (state == Cipher.ENCRYPT_MODE || state == Cipher.WRAP_MODE)
{
return buffer.size() + inputLen + 20; /* SHA1 MAC size */
}
else if (state == Cipher.DECRYPT_MODE || state == Cipher.UNWRAP_MODE)
{
return buffer.size() + inputLen - 20;
}
else
{
throw new IllegalStateException("cipher not initialised");
}
}
示例3: engineInit
protected void engineInit(
int opmode,
Key key,
SecureRandom random)
throws InvalidKeyException
{
if (opmode == Cipher.ENCRYPT_MODE || opmode == Cipher.WRAP_MODE)
{
try
{
engineInit(opmode, key, (AlgorithmParameterSpec)null, random);
return;
}
catch (InvalidAlgorithmParameterException e)
{
// fall through...
}
}
throw new IllegalArgumentException("can't handle null parameter spec in IES");
}
示例4: engineGetOutputSize
protected int engineGetOutputSize(
int inputLen)
{
if (state == Cipher.ENCRYPT_MODE || state == Cipher.WRAP_MODE)
{
return buffer.size() + inputLen + 20; /* SHA1 MAC size */
}
else if (state == Cipher.DECRYPT_MODE || state == Cipher.UNWRAP_MODE)
{
return buffer.size() + inputLen - 20;
}
else
{
throw new IllegalStateException("cipher not initialised");
}
}
示例5: engineInit
protected void engineInit(
int opmode,
Key key,
SecureRandom random)
throws InvalidKeyException
{
if (opmode == Cipher.ENCRYPT_MODE || opmode == Cipher.WRAP_MODE)
{
try
{
engineInit(opmode, key, (AlgorithmParameterSpec)null, random);
return;
}
catch (InvalidAlgorithmParameterException e)
{
// fall through...
}
}
throw new IllegalArgumentException("can't handle null parameter spec in IES");
}
示例6: engineGetOutputSize
public int engineGetOutputSize(int inputLen)
{
int len1, len2, len3;
len1 = engine.getMac().getMacSize();
if (key != null)
{
len2 = ((DHKey)key).getParams().getP().bitLength() / 8 + 1;
}
else
{
throw new IllegalStateException("cipher not initialised");
}
if (engine.getCipher() == null)
{
len3 = inputLen;
}
else if (state == Cipher.ENCRYPT_MODE || state == Cipher.WRAP_MODE)
{
len3 = engine.getCipher().getOutputSize(inputLen);
}
else if (state == Cipher.DECRYPT_MODE || state == Cipher.UNWRAP_MODE)
{
len3 = engine.getCipher().getOutputSize(inputLen - len1 - len2);
}
else
{
throw new IllegalStateException("cipher not initialised");
}
if (state == Cipher.ENCRYPT_MODE || state == Cipher.WRAP_MODE)
{
return buffer.size() + len1 + len2 + len3;
}
else if (state == Cipher.DECRYPT_MODE || state == Cipher.UNWRAP_MODE)
{
return buffer.size() - len1 - len2 + len3;
}
else
{
throw new IllegalStateException("IESCipher not initialised");
}
}