Class CipherOutputStreamImpl
- All Implemented Interfaces:
Closeable
,Flushable
,AutoCloseable
For example, if the cipher is initialized for encryption, the CipherOutputStream will encrypt the data before writing the encrypted data to the underlying stream.
Note: this class does not close the underlying stream on a close.
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Constructor Summary
ConstructorsConstructorDescriptionCipherOutputStreamImpl
(OutputStream out, BufferedBlockCipher cipher) Constructs a CipherOutputStream from an OutputStream and a BufferedBlockCipher;.CipherOutputStreamImpl
(OutputStream out, AEADBlockCipher cipher) Constructs a CipherOutputStream from an OutputStream and a AEADBlockCipher;.CipherOutputStreamImpl
(OutputStream out, StreamCipher cipher) Constructs a CipherOutputStream from an OutputStream and a BufferedBlockCipher;. -
Method Summary
Modifier and TypeMethodDescriptionvoid
close()
Closes this output stream and releases any system resources associated with this stream.void
flush()
Flushes this output stream by forcing any buffered output bytes that have already been processed by the encapsulated cipher object to be written out.void
write
(byte[] b) Writesb.length
bytes from the specified byte array to this output stream.void
write
(byte[] b, int off, int len) Writeslen
bytes from the specified byte array starting at offsetoff
to this output stream.void
write
(int b) Writes the specified byte to this output stream.Methods inherited from class org.bouncycastle.crypto.UpdateOutputStream
update, update, update
Methods inherited from class java.io.OutputStream
nullOutputStream
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Constructor Details
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CipherOutputStreamImpl
Constructs a CipherOutputStream from an OutputStream and a BufferedBlockCipher;. -
CipherOutputStreamImpl
Constructs a CipherOutputStream from an OutputStream and a BufferedBlockCipher;. -
CipherOutputStreamImpl
Constructs a CipherOutputStream from an OutputStream and a AEADBlockCipher;.
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Method Details
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write
Writes the specified byte to this output stream.- Specified by:
write
in classOutputStream
- Parameters:
b
- thebyte
.- Throws:
IOException
- if an I/O error occurs.
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write
Writesb.length
bytes from the specified byte array to this output stream.The
write
method ofCipherOutputStream
calls thewrite
method of three arguments with the three argumentsb
,0
, andb.length
.- Overrides:
write
in classOutputStream
- Parameters:
b
- the data.- Throws:
IOException
- if an I/O error occurs.- See Also:
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write
Writeslen
bytes from the specified byte array starting at offsetoff
to this output stream.- Overrides:
write
in classOutputStream
- Parameters:
b
- the data.off
- the start offset in the data.len
- the number of bytes to write.- Throws:
IOException
- if an I/O error occurs.
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flush
Flushes this output stream by forcing any buffered output bytes that have already been processed by the encapsulated cipher object to be written out.Any bytes buffered by the encapsulated cipher and waiting to be processed by it will not be written out. For example, if the encapsulated cipher is a block cipher, and the total number of bytes written using one of the
write
methods is less than the cipher's block size, no bytes will be written out.- Specified by:
flush
in interfaceFlushable
- Overrides:
flush
in classOutputStream
- Throws:
IOException
- if an I/O error occurs.
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close
Closes this output stream and releases any system resources associated with this stream.This method invokes the
doFinal
method of the encapsulated cipher object, which causes any bytes buffered by the encapsulated cipher to be processed. The result is written out by calling theflush
method of this output stream.This method resets the encapsulated cipher object to its initial state and does not call
close
method of the underlying output stream.- Specified by:
close
in interfaceAutoCloseable
- Specified by:
close
in interfaceCloseable
- Specified by:
close
in classCipherOutputStream
- Throws:
IOException
- if an I/O error occurs.InvalidCipherTextException
- if the data written to this stream was invalid cipher text (e.g. the cipher is an AEAD cipher and the ciphertext tag check fails).
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