com.alipay.mychain.sdk.crypto.pkeycipher

类 EccK1KDFV1

java.lang.Object

com.alipay.mychain.sdk.crypto.pkeycipher.EccK1KDFV1

所有已实现的接口:

PkeyCipherBase

public class EccK1KDFV1
extends Object
implements PkeyCipherBase

版本:

$Id: EccK1KDFV1.java, v 0.1 2019-04-24 3:38 PM evan Exp $$

作者:

evan

构造器概要

构造器

构造器和说明
EccK1KDFV1(Keypair keypair)
EccK1KDFV1(Keypair keypair, HashTypeEnum hashTypeEnum)

方法概要

限定符和类型	方法和说明
byte[]	decrypt(byte[] ciphertext) ciphertext = KDFAlgoId[2] | pubkeyFp[4] | k*pubkey[64] privkeyInv * ciphertext = privkeyInv * k * privkey * G = k*G = P
byte[]	encrypt(byte[] k) KDF function for EccK1EnvelopeV1.
AlgoIdEnum	getAlgo()
byte[]	getPrivateKey()
byte[]	getPublicKey()
boolean	isDecryptor() If hold private key, return true.
boolean	isEncryptor() If hold public key or private key, return true.

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

EccK1KDFV1

public EccK1KDFV1(Keypair keypair)

EccK1KDFV1

public EccK1KDFV1(Keypair keypair,
                  HashTypeEnum hashTypeEnum)

参数:

keypair -

方法详细资料

getAlgo

public AlgoIdEnum getAlgo()

指定者:

getAlgo 在接口中 PkeyCipherBase

返回:

isEncryptor

public boolean isEncryptor()

If hold public key or private key, return true.

指定者:

isEncryptor 在接口中 PkeyCipherBase

返回:

isDecryptor

public boolean isDecryptor()

If hold private key, return true.

指定者:

isDecryptor 在接口中 PkeyCipherBase

返回:

encrypt

public byte[] encrypt(byte[] k)

KDF function for EccK1EnvelopeV1. k is a random data. secretKey encrypted = k*pubkey P=k*G hash = Sha256(P.getEncoded) SecretKey = hash[0,15] xor hash[16,31] secretKey is Symmetric key

指定者:

encrypt 在接口中 PkeyCipherBase

参数:

k -

返回:

KDFAlgoId[2] | pubkeyFp[4] | k*pubkey[64]

decrypt

public byte[] decrypt(byte[] ciphertext)

ciphertext = KDFAlgoId[2] | pubkeyFp[4] | k*pubkey[64] privkeyInv * ciphertext = privkeyInv * k * privkey * G = k*G = P

指定者:

decrypt 在接口中 PkeyCipherBase

参数:

ciphertext -

返回:

P[64]

getPublicKey

public byte[] getPublicKey()

getPrivateKey

public byte[] getPrivateKey()