java.lang.Object | |
↳ | javax.crypto.spec.GCMParameterSpec |
Provides a the parameters for an instance of a Cipher
using Galois/Counter Mode (GCM). This is an Authenticated Encryption with
Associated Data (AEAD) mode for a cipher which allows you to use the
updateAAD(byte[])
method to provide data that is
transmitted in the clear but authenticated using a cryptographic Message
Authentication Code (MAC).
Public Constructors | |||||||||||
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Creates a new
GCMParameterSpec instance from the specified
Initial Vector (IV) from buffer iv and a tag length of
tagLen in bits. | |||||||||||
Creates a new
GCMParameterSpec instance with the Initial Vector
(IV) of byteCount bytes from the specified buffer iv
starting at offset and a tag length of tagLen in bits. |
Public Methods | |||||||||||
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Returns the Initial Vector (IV) used by this parameter spec.
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Returns the size of the tag in bits.
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Inherited Methods | |||||||||||
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From class
java.lang.Object
|
Creates a new GCMParameterSpec
instance from the specified
Initial Vector (IV) from buffer iv
and a tag length of
tagLen
in bits.
IllegalArgumentException | if the specified iv is null or
offset and byteCount do not specify a valid
chunk in the specified buffer.
|
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Creates a new GCMParameterSpec
instance with the Initial Vector
(IV) of byteCount
bytes from the specified buffer iv
starting at offset
and a tag length of tagLen
in bits.
IllegalArgumentException | if the specified iv is null or
offset and byteCount do not specify a valid
chunk in the specified buffer. |
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ArrayIndexOutOfBoundsException | if offset or
byteCount are negative.
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Returns the Initial Vector (IV) used by this parameter spec.