Package org.bouncycastle.tls.crypto
Class TlsNullNullCipher
- java.lang.Object
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- org.bouncycastle.tls.crypto.TlsNullNullCipher
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Field Summary
Fields Modifier and Type Field Description static TlsNullNullCipher
INSTANCE
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Constructor Summary
Constructors Constructor Description TlsNullNullCipher()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description TlsDecodeResult
decodeCiphertext(long seqNo, short recordType, ProtocolVersion recordVersion, byte[] ciphertext, int offset, int len)
Decode the passed in ciphertext using the current bulk cipher.TlsEncodeResult
encodePlaintext(long seqNo, short contentType, ProtocolVersion recordVersion, int headerAllocation, byte[] plaintext, int offset, int len)
Encode the passed in plaintext using the current bulk cipher.int
getCiphertextDecodeLimit(int plaintextLimit)
Return the maximum input size for a ciphertext given a maximum output size for the plaintext of plaintextLimit bytes.int
getCiphertextEncodeLimit(int plaintextLength, int plaintextLimit)
Return the maximum output size for a ciphertext given an actual input plaintext size of plaintextLength bytes and a maximum input plaintext size of plaintextLimit bytes.int
getPlaintextLimit(int ciphertextLimit)
Return the maximum size for the plaintext given ciphertextlimit bytes of ciphertext.void
rekeyDecoder()
void
rekeyEncoder()
boolean
usesOpaqueRecordType()
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Field Detail
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INSTANCE
public static final TlsNullNullCipher INSTANCE
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Method Detail
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getCiphertextDecodeLimit
public int getCiphertextDecodeLimit(int plaintextLimit)
Description copied from interface:TlsCipher
Return the maximum input size for a ciphertext given a maximum output size for the plaintext of plaintextLimit bytes.- Specified by:
getCiphertextDecodeLimit
in interfaceTlsCipher
- Parameters:
plaintextLimit
- the maximum output size for the plaintext.- Returns:
- the maximum input size of the ciphertext for plaintextlimit bytes of output.
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getCiphertextEncodeLimit
public int getCiphertextEncodeLimit(int plaintextLength, int plaintextLimit)
Description copied from interface:TlsCipher
Return the maximum output size for a ciphertext given an actual input plaintext size of plaintextLength bytes and a maximum input plaintext size of plaintextLimit bytes.- Specified by:
getCiphertextEncodeLimit
in interfaceTlsCipher
- Parameters:
plaintextLength
- the actual input size for the plaintext.plaintextLimit
- the maximum input size for the plaintext.- Returns:
- the maximum output size of the ciphertext for plaintextlimit bytes of input.
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getPlaintextLimit
public int getPlaintextLimit(int ciphertextLimit)
Description copied from interface:TlsCipher
Return the maximum size for the plaintext given ciphertextlimit bytes of ciphertext.- Specified by:
getPlaintextLimit
in interfaceTlsCipher
- Parameters:
ciphertextLimit
- the maximum number of bytes of ciphertext.- Returns:
- the maximum size of the plaintext for ciphertextlimit bytes of input.
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encodePlaintext
public TlsEncodeResult encodePlaintext(long seqNo, short contentType, ProtocolVersion recordVersion, int headerAllocation, byte[] plaintext, int offset, int len) throws java.io.IOException
Description copied from interface:TlsCipher
Encode the passed in plaintext using the current bulk cipher.- Specified by:
encodePlaintext
in interfaceTlsCipher
- Parameters:
seqNo
- sequence number of the message represented by plaintext.contentType
- content type of the message represented by plaintext.recordVersion
-ProtocolVersion
used for the record.headerAllocation
- extra bytes to allocate at start of returned byte array.plaintext
- array holding input plaintext to the cipher.offset
- offset into input array the plaintext starts at.len
- length of the plaintext in the array.- Returns:
- A
TlsEncodeResult
containing the result of encoding (after 'headerAllocation' unused bytes). - Throws:
java.io.IOException
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decodeCiphertext
public TlsDecodeResult decodeCiphertext(long seqNo, short recordType, ProtocolVersion recordVersion, byte[] ciphertext, int offset, int len) throws java.io.IOException
Description copied from interface:TlsCipher
Decode the passed in ciphertext using the current bulk cipher.- Specified by:
decodeCiphertext
in interfaceTlsCipher
- Parameters:
seqNo
- sequence number of the message represented by ciphertext.recordType
- content type used in the record for this message.recordVersion
-ProtocolVersion
used for the record.ciphertext
- array holding input ciphertext to the cipher.offset
- offset into input array the ciphertext starts at.len
- length of the ciphertext in the array.- Returns:
- A
TlsDecodeResult
containing the result of decoding. - Throws:
java.io.IOException
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rekeyDecoder
public void rekeyDecoder() throws java.io.IOException
- Specified by:
rekeyDecoder
in interfaceTlsCipher
- Throws:
java.io.IOException
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rekeyEncoder
public void rekeyEncoder() throws java.io.IOException
- Specified by:
rekeyEncoder
in interfaceTlsCipher
- Throws:
java.io.IOException
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usesOpaqueRecordType
public boolean usesOpaqueRecordType()
- Specified by:
usesOpaqueRecordType
in interfaceTlsCipher
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