com.arxanfintech.common.crypto.core

类 ConcatKDFBytesGenerator

java.lang.Object

com.arxanfintech.common.crypto.core.ConcatKDFBytesGenerator

所有已实现的接口:

org.spongycastle.crypto.DerivationFunction, org.spongycastle.crypto.DigestDerivationFunction

public class ConcatKDFBytesGenerator
extends java.lang.Object
implements org.spongycastle.crypto.DigestDerivationFunction

Basic KDF generator for derived keys and ivs as defined by NIST SP 800-56A.

构造器概要

构造器

限定符	构造器和说明
	ConcatKDFBytesGenerator(org.spongycastle.crypto.Digest digest)
protected	ConcatKDFBytesGenerator(int counterStart, org.spongycastle.crypto.Digest digest) Construct a KDF Parameters generator.

方法概要

限定符和类型	方法和说明
int	generateBytes(byte[] out, int outOff, int len) fill len bytes of the output buffer with bytes generated from the derivation function.
org.spongycastle.crypto.Digest	getDigest() return the underlying digest.
void	init(org.spongycastle.crypto.DerivationParameters param)

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

ConcatKDFBytesGenerator

protected ConcatKDFBytesGenerator(int counterStart,
                                  org.spongycastle.crypto.Digest digest)

Construct a KDF Parameters generator.

参数:

counterStart - value of counter.

digest - the digest to be used as the source of derived keys.

ConcatKDFBytesGenerator

public ConcatKDFBytesGenerator(org.spongycastle.crypto.Digest digest)

方法详细资料

init

public void init(org.spongycastle.crypto.DerivationParameters param)

指定者:

init 在接口中 org.spongycastle.crypto.DerivationFunction

getDigest

public org.spongycastle.crypto.Digest getDigest()

return the underlying digest.

指定者:

getDigest 在接口中 org.spongycastle.crypto.DigestDerivationFunction

generateBytes

public int generateBytes(byte[] out,
                         int outOff,
                         int len)
                  throws org.spongycastle.crypto.DataLengthException,
                         java.lang.IllegalArgumentException

fill len bytes of the output buffer with bytes generated from the derivation function.

指定者:

generateBytes 在接口中 org.spongycastle.crypto.DerivationFunction

抛出:

java.lang.IllegalArgumentException - if the size of the request will cause an overflow.

org.spongycastle.crypto.DataLengthException - if the out buffer is too small.