Package net.i2p.data
Class Signature
java.lang.Object
net.i2p.data.SimpleDataStructure
net.i2p.data.Signature
- All Implemented Interfaces:
DataStructure
public class Signature extends SimpleDataStructure
Defines the signature as defined by the I2P data structure spec.
By default, a signature is a 40-byte array verifying the authenticity of some data
using the DSA-SHA1 algorithm.
The signature is the 20-byte R followed by the 20-byte S,
both are unsigned integers.
As of release 0.9.8, signatures of arbitrary length and type are supported.
See SigType.
- Author:
- jrandom
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Field Summary
Fields Modifier and Type Field Description static byte[]
FAKE_SIGNATURE
Deprecated.to be removedstatic int
SIGNATURE_BYTES
40 -
Constructor Summary
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Method Summary
Modifier and Type Method Description boolean
equals(Object obj)
Warning - this returns true for two different classes with the same size and same data, e.g.SigType
getType()
int
hashCode()
We assume the data has enough randomness in it, so use the first 4 bytes for speed.int
length()
The legal length of the byte array in this data structureString
toString()
Methods inherited from class net.i2p.data.SimpleDataStructure
calculateHash, fromBase64, fromByteArray, getData, read, readBytes, setData, toBase64, toByteArray, writeBytes
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Field Details
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SIGNATURE_BYTES
public static final int SIGNATURE_BYTES40 -
FAKE_SIGNATURE
Deprecated.to be removedall zeros
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Constructor Details
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Method Details
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length
public int length()Description copied from class:SimpleDataStructure
The legal length of the byte array in this data structure- Specified by:
length
in classSimpleDataStructure
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getType
- Returns:
- non-null
- Since:
- 0.9.8
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toString
- Overrides:
toString
in classSimpleDataStructure
- Since:
- 0.9.8
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hashCode
public int hashCode()Description copied from class:SimpleDataStructure
We assume the data has enough randomness in it, so use the first 4 bytes for speed. If this is not the case, override in the extending class.- Overrides:
hashCode
in classSimpleDataStructure
- Since:
- 0.9.17
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equals
Description copied from class:SimpleDataStructure
Warning - this returns true for two different classes with the same size and same data, e.g. SessionKey and SessionTag, but you wouldn't put them in the same Set, would you?- Overrides:
equals
in classSimpleDataStructure
- Since:
- 0.9.17
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