Class PKCS1Encoding
java.lang.Object
org.bouncycastle.crypto.internal.encodings.PKCS1Encoding
- All Implemented Interfaces:
AsymmetricBlockCipher
this does your basic PKCS 1 v1.5 padding - whether or not you should be using this
depends on your application - see PKCS1 Version 2 for details.
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Field Summary
FieldsModifier and TypeFieldDescriptionstatic final String
some providers fail to include the leading zero in PKCS1 encoded blocks. -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionint
returns the largest size an input block can be.int
returns the maximum size of the block produced by this cipher.void
init
(boolean forEncryption, CipherParameters param) initialise the cipher.byte[]
processBlock
(byte[] in, int inOff, int inLen) process the block of len bytes stored in in from offset inOff.
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Field Details
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NOT_STRICT_LENGTH_ENABLED_PROPERTY
some providers fail to include the leading zero in PKCS1 encoded blocks. If you need to work with one of these set the system property org.bouncycastle.pkcs1.strict to false.The system property is checked during construction of the encoding object, it is set to true by default.
- See Also:
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Constructor Details
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PKCS1Encoding
Basic constructor.- Parameters:
cipher
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Method Details
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getUnderlyingCipher
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init
Description copied from interface:AsymmetricBlockCipher
initialise the cipher.- Specified by:
init
in interfaceAsymmetricBlockCipher
- Parameters:
forEncryption
- if true the cipher is initialised for encryption, if false for decryption.param
- the key and other data required by the cipher.
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getInputBlockSize
public int getInputBlockSize()Description copied from interface:AsymmetricBlockCipher
returns the largest size an input block can be.- Specified by:
getInputBlockSize
in interfaceAsymmetricBlockCipher
- Returns:
- maximum size for an input block.
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getOutputBlockSize
public int getOutputBlockSize()Description copied from interface:AsymmetricBlockCipher
returns the maximum size of the block produced by this cipher.- Specified by:
getOutputBlockSize
in interfaceAsymmetricBlockCipher
- Returns:
- maximum size of the output block produced by the cipher.
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processBlock
Description copied from interface:AsymmetricBlockCipher
process the block of len bytes stored in in from offset inOff.- Specified by:
processBlock
in interfaceAsymmetricBlockCipher
- Parameters:
in
- the input datainOff
- offset into the in array where the data startsinLen
- the length of the block to be processed.- Returns:
- the resulting byte array of the encryption/decryption process.
- Throws:
InvalidCipherTextException
- data decrypts improperly.
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