OpenJDK 27 · sun.security.provider.HashDrbg · APIdia, the JavaDoc alternative

Modifier and Type	Field and Description
private byte[]	c
private MessageDigest	digest
private static final byte[]	ONE
private byte[]	v
private static final byte[]	ZERO

Access	Constructor and Description
public	HashDrbg(SecureRandomParameters params)

Method Summary

Modifier and Type	Method and Description
private static void	addBytes(byte[] existing array out, int len, byte[]... more arrays, can be of different length data) Adds byte arrays into an existing one.
public final synchronized void	generateAlgorithm(byte[] the array to be filled in with random bytes. result, byte[] additionalInput) Implements abstract sun.security.provider.AbstractDrbg.generateAlgorithm. Generates a user-specified number of random bytes.
private byte[]	hashDf(int requested, List<byte[]> inputs)
public static byte[]	Returns: the condensed/expanded output hashDf(MessageDigest a `MessageDigest` object in reset state digest, int `MessageDigest#getDigestLength` of `digest` outLen, int requested output length, in bytes requested, List<byte[]> input data inputs) A hash-based derivation function defined in NIST SP 800-90Ar1 10.3.1.
private void	hashGen(byte[] output, byte[] v)
protected final synchronized void	hashReseedInternal(List<byte[]> inputs) Implements abstract sun.security.provider.AbstractHashDrbg.hashReseedInternal. Operates on multiple inputs.
protected void	initEngine() Implements abstract sun.security.provider.AbstractDrbg.initEngine. This call, used by the constructors, instantiates the digest.
private void	status()

Inherited from sun.security.provider.AbstractHashDrbg:: chooseAlgorithmAndStrength instantiateAlgorithm reseedAlgorithm

c	back to summary
private byte[] c

digest	back to summary
private MessageDigest digest

ONE	back to summary
private static final byte[] ONE

v	back to summary
private byte[] v

ZERO	back to summary
private static final byte[] ZERO

HashDrbg	back to summary
public HashDrbg(SecureRandomParameters params) Annotations @SuppressWarnings:this-escape

Method Detail

addBytes	back to summary
private static void addBytes(byte[] out, int len, byte[]... data) Adds byte arrays into an existing one. Parameters out:byte[] existing array data:byte[][] more arrays, can be of different length

addBytes

back to summary

private static void addBytes(byte[] out, int len, byte[]... data)

Adds byte arrays into an existing one.

Parameters

out:byte[]: existing array
data:byte[][]: more arrays, can be of different length

generateAlgorithm	back to summary
public final synchronized void generateAlgorithm(byte[] result, byte[] additionalInput) Implements abstract sun.security.provider.AbstractDrbg.generateAlgorithm. Generates a user-specified number of random bytes. Parameters result:byte[] the array to be filled in with random bytes. Annotations @Override

generateAlgorithm

back to summary

public final synchronized void generateAlgorithm(byte[] result, byte[] additionalInput)

Implements abstract sun.security.provider.AbstractDrbg.generateAlgorithm.

Generates a user-specified number of random bytes.

Parameters

result:byte[]: the array to be filled in with random bytes.

Annotations

@Override

hashDf	back to summary
private byte[] hashDf(int requested, List<byte[]> inputs)

hashDf back to summary

hashDf	back to summary
public static byte[] hashDf(MessageDigest digest, int outLen, int requested, List<byte[]> inputs) A hash-based derivation function defined in NIST SP 800-90Ar1 10.3.1. The function is used inside Hash_DRBG, and can also be used as an approved conditioning function as described in 800-90B 6.4.2.2. Note In each current call, requested is seedLen, therefore small, no need to worry about overflow. Parameters digest:MessageDigest a `MessageDigest` object in reset state outLen:int `MessageDigest#getDigestLength` of `digest` requested:int requested output length, in bytes inputs:List<byte[]> input data Returns:byte[] the condensed/expanded output

public static byte[] hashDf(MessageDigest digest, int outLen, int requested, List<byte[]> inputs)

A hash-based derivation function defined in NIST SP 800-90Ar1 10.3.1. The function is used inside Hash_DRBG, and can also be used as an approved conditioning function as described in 800-90B 6.4.2.2.

Note

In each current call, requested is seedLen, therefore small, no need to worry about overflow.

Parameters

digest:MessageDigest: a MessageDigest object in reset state
outLen:int: MessageDigest#getDigestLength of digest
requested:int: requested output length, in bytes
inputs:List<byte[]>: input data

Returns:byte[]

the condensed/expanded output

hashGen	back to summary
private void hashGen(byte[] output, byte[] v)

hashReseedInternal	back to summary
protected final synchronized void hashReseedInternal(List<byte[]> inputs) Implements abstract sun.security.provider.AbstractHashDrbg.hashReseedInternal. Doc from sun.security.provider.AbstractHashDrbg.hashReseedInternal. Operates on multiple inputs. Annotations @Override

hashReseedInternal

back to summary

protected final synchronized void hashReseedInternal(List<byte[]> inputs)

Implements abstract sun.security.provider.AbstractHashDrbg.hashReseedInternal.

Doc from sun.security.provider.AbstractHashDrbg.hashReseedInternal.

Operates on multiple inputs.

Annotations

@Override

initEngine	back to summary
protected void initEngine() Implements abstract sun.security.provider.AbstractDrbg.initEngine. This call, used by the constructors, instantiates the digest. Annotations @Override

initEngine

back to summary

protected void initEngine()

Implements abstract sun.security.provider.AbstractDrbg.initEngine.

This call, used by the constructors, instantiates the digest.

Annotations

@Override

status	back to summary
private void status()

public Class HashDrbg

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail