java.lang.Object | |
↳ | javax.crypto.spec.DESKeySpec |
The key specification for a DES key.
Constants | |||||||||||
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int | DES_KEY_LEN | The length of a DES key in bytes. |
Public Constructors | |||||||||||
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Creates a new
DESKeySpec
from the first 8 bytes of the
specified key data.
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Creates a new
DESKeySpec
from the first 8 bytes of the
specified key data starting at
offset
.
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Public Methods | |||||||||||
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Returns a copy of the key.
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Returns whether the specified key data starting at
offset
is
parity-adjusted
.
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Returns whether the specified key data starting at
offset
is
weak or semi-weak.
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Inherited Methods
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From class
java.lang.Object
|
The length of a DES key in bytes.
Creates a new
DESKeySpec
from the first 8 bytes of the
specified key data.
key | the key data. |
---|
InvalidKeyException | if the length of the specified key data is less than 8. |
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Creates a new
DESKeySpec
from the first 8 bytes of the
specified key data starting at
offset
.
key | the key data |
---|---|
offset | the offset to start at. |
InvalidKeyException | if the length of the specified key data starting at offset is less than 8. |
---|
Returns whether the specified key data starting at
offset
is
parity-adjusted
.
key | the key data. |
---|---|
offset | the offset to start checking at. |
true
if the specified key data is parity-adjusted,
false
otherwise.
InvalidKeyException | if the length of the key data starting at offset is less than 8, or the key is null. |
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Returns whether the specified key data starting at
offset
is
weak or semi-weak.
key | the key data. |
---|---|
offset | the offset to start checking at. |
true
if the specified key data is weak or semi-weak.
InvalidKeyException | if the length of the key data starting at offset is less than 8, or it is null. |
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