Package org.bouncycastle.oldcrypto.macs
Class I2PHMac
- java.lang.Object
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- org.bouncycastle.oldcrypto.macs.I2PHMac
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- All Implemented Interfaces:
Mac
public class I2PHMac extends Object implements Mac
HMAC implementation based on RFC2104 H(K XOR opad, H(K XOR ipad, text)) modified by jrandom to use the session key byte array directly and to cache a frequently used buffer (called on doFinal). changes released into the public domain in 2005. This is renamed from HMac because the constructor HMac(digest, sz) does not exist in the standard bouncycastle library, thus it conflicts in JVMs that contain the standard library (Android). As of 0.9.12, refactored to use standard MessageDigest. Deprecated - Do not use outside of router or Syndie. To be moved to router.
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Constructor Summary
Constructors Constructor Description I2PHMac(MessageDigest digest)
Deprecated.Use javax.crypto.MacI2PHMac(MessageDigest digest, int sz)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description int
doFinal(byte[] out, int outOff)
Compute the final statge of the MAC writing the output to the out parameter.String
getAlgorithmName()
Return the name of the algorithm the MAC implements.int
getMacSize()
Return the block size for this cipher (in bytes).MessageDigest
getUnderlyingDigest()
void
init(byte[] key)
Initialise the MAC.void
reset()
Reset the mac generator.void
update(byte in)
add a single byte to the mac for processing.void
update(byte[] in, int inOff, int len)
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Constructor Detail
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I2PHMac
@Deprecated public I2PHMac(MessageDigest digest)
Deprecated.Use javax.crypto.MacStandard HMAC, size == digest size.
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I2PHMac
public I2PHMac(MessageDigest digest, int sz)
- Parameters:
sz
- override the digest's size, nonstandard if different. SEE NOTES in HMACGenerator about why this isn't compatible with standard HmacMD5
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Method Detail
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getAlgorithmName
public String getAlgorithmName()
Description copied from interface:Mac
Return the name of the algorithm the MAC implements.- Specified by:
getAlgorithmName
in interfaceMac
- Returns:
- the name of the algorithm the MAC implements.
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getUnderlyingDigest
public MessageDigest getUnderlyingDigest()
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init
public void init(byte[] key)
Description copied from interface:Mac
Initialise the MAC.
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getMacSize
public int getMacSize()
Description copied from interface:Mac
Return the block size for this cipher (in bytes).- Specified by:
getMacSize
in interfaceMac
- Returns:
- the block size for this cipher in bytes.
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update
public void update(byte in)
Description copied from interface:Mac
add a single byte to the mac for processing.
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update
public void update(byte[] in, int inOff, int len)
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doFinal
public int doFinal(byte[] out, int outOff)
Description copied from interface:Mac
Compute the final statge of the MAC writing the output to the out parameter.doFinal leaves the MAC in the same state it was after the last init.
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