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public interface BlockFormatterEngine
The BlockFormatterEngine
interface formats input by inserting
padding into the data. This interface allows for block ciphers that use specific forms of padding.
The BlockUnformatterEngine
removes specific padding
from data.
Method Summary | ||
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int |
formatAndEncrypt(byte[] input,
int inputOffset,
int inputLength,
byte[] output,
int outputOffset)
Formats the input into the proper format and then encrypts it, assuming this is not the last block to be encrypted. |
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int |
formatAndEncrypt(byte[] input,
int inputOffset,
int inputLength,
byte[] output,
int outputOffset,
boolean lastBlock)
Formats the input into the proper format and then encrypts it. |
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String |
getAlgorithm()
Returns the name of this algorithm, eg "PKCS5". |
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int |
getInputBlockLength()
Returns the length of an input block in bytes. |
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int |
getOutputBlockLength()
Returns the length of an output block in bytes. |
Method Detail |
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int formatAndEncrypt(byte[] input, int inputOffset, int inputLength, byte[] output, int outputOffset, boolean lastBlock) throws MessageTooLongException, CryptoTokenException
input
- A byte array containing the data to be encrypted.inputOffset
- The offset, or initial bit position, of the data within the byte array.inputLength
- The amount of data to encrypt.output
- A byte array to hold the encoded and encrypted data.outputOffset
- The offset, or initial bit position, of the data within the byte array.lastBlock
- A boolean that indicates the last block
to be encrypted.
MessageTooLongException
- Thrown if the input is too long to be encoded
with the given encoding scheme.
CryptoTokenException
- Thrown when a problem occurs with a crypto token or the crypto token is invalid.int formatAndEncrypt(byte[] input, int inputOffset, int inputLength, byte[] output, int outputOffset) throws MessageTooLongException, CryptoTokenException
input
- A byte array containing the data to be encrypted.inputOffset
- The offset, or initial bit position, of the data within the byte array.inputLength
- The amount of data to encrypt.output
- A byte array to hold the encoded and encrypted data.outputOffset
- The offset, or initial bit position, of the data within the byte array.
MessageTooLongException
- Thrown if the input is too long to be encoded
with the given encoding scheme.
CryptoTokenException
- Thrown when a problem occurs with a crypto token or the crypto token is invalid.int getInputBlockLength()
int getOutputBlockLength()
String getAlgorithm()
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