public abstract class ExemptionMechanismSpi extends Object
ExemptionMechanism
class.Constructor and Description |
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ExemptionMechanismSpi()
Create a new exemption mechanism SPI.
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Modifier and Type | Method and Description |
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protected abstract byte[] |
engineGenExemptionBlob()
Return a key blob for the key that this mechanism was initialized
with.
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protected abstract int |
engineGenExemptionBlob(byte[] output,
int outputOffset)
Generate a key blob for the key that this mechanism was initialized
with, storing it into the given byte array.
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protected abstract int |
engineGetOutputSize(int inputLength)
Get the size of the output blob given an input key size.
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protected abstract void |
engineInit(Key key)
Initialize this mechanism with a key.
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protected abstract void |
engineInit(Key key,
AlgorithmParameters params)
Initialize this mechanism with a key and parameters.
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protected abstract void |
engineInit(Key key,
AlgorithmParameterSpec params)
Initialize this mechanism with a key and parameters.
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public ExemptionMechanismSpi()
protected abstract byte[] engineGenExemptionBlob() throws ExemptionMechanismException
ExemptionMechanismException
- If generating the
blob fails.protected abstract int engineGenExemptionBlob(byte[] output, int outputOffset) throws ExemptionMechanismException, ShortBufferException
output
- The destination for the key blob.outputOffset
- The index in the output array to start.ExemptionMechanismException
- If generating the
blob fails.ShortBufferException
- If the output array is
not large enough for the key blob.protected abstract int engineGetOutputSize(int inputLength)
inputLength
- The input size.protected abstract void engineInit(Key key) throws ExemptionMechanismException, InvalidKeyException
key
- The key.ExemptionMechanismException
- If generating the
blob fails.InvalidKeyException
- If the supplied key
cannot be used.protected abstract void engineInit(Key key, AlgorithmParameters params) throws ExemptionMechanismException, InvalidAlgorithmParameterException, InvalidKeyException
key
- The key.params
- The parameters.ExemptionMechanismException
- If generating the
blob fails.java.security.InvalidAlgorithmParameterExceptin
- If the
supplied parameters are inappropriate.InvalidKeyException
- If the supplied key
cannot be used.InvalidAlgorithmParameterException
protected abstract void engineInit(Key key, AlgorithmParameterSpec params) throws ExemptionMechanismException, InvalidAlgorithmParameterException, InvalidKeyException
key
- The key.params
- The parameters.ExemptionMechanismException
- If generating the
blob fails.java.security.InvalidAlgorithmParameterExceptin
- If the
supplied parameters are inappropriate.InvalidKeyException
- If the supplied key
cannot be used.InvalidAlgorithmParameterException