本文整理匯總了Java中javax.crypto.Cipher.WRAP_MODE屬性的典型用法代碼示例。如果您正苦於以下問題：Java Cipher.WRAP_MODE屬性的具體用法？Java Cipher.WRAP_MODE怎麽用？Java Cipher.WRAP_MODE使用的例子？那麽, 這裏精選的屬性代碼示例或許可以為您提供幫助。您也可以進一步了解該屬性所在類javax.crypto.Cipher的用法示例。
在下文中一共展示了Cipher.WRAP_MODE屬性的6個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。
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");
}
}