cn.jiguang.common.utils.sm2

Class SM2Util

java.lang.Object

cn.jiguang.common.utils.sm2.GMBaseUtil

cn.jiguang.common.utils.sm2.SM2Util

public class SM2Util
extends GMBaseUtil

Field Summary

Fields

Modifier and Type	Field and Description
static org.bouncycastle.math.ec.custom.gm.SM2P256V1Curve	CURVE
static int	CURVE_LEN
static org.bouncycastle.crypto.params.ECDomainParameters	DOMAIN_PARAMS
static org.bouncycastle.math.ec.ECPoint	G_POINT
static EllipticCurve	JDK_CURVE
static ECParameterSpec	JDK_EC_SPEC
static ECPoint	JDK_G_POINT
static BigInteger	SM2_ECC_A
static BigInteger	SM2_ECC_B
static BigInteger	SM2_ECC_GX
static BigInteger	SM2_ECC_GY
static BigInteger	SM2_ECC_H
static BigInteger	SM2_ECC_N
static BigInteger	SM2_ECC_P

Constructor Summary

Constructors

Constructor and Description
SM2Util()

Method Summary

Modifier and Type	Method and Description
static byte[]	decrypt(org.bouncycastle.jcajce.provider.asymmetric.ec.BCECPrivateKey priKey, byte[] sm2Cipher)
static byte[]	decrypt(org.bouncycastle.crypto.params.ECPrivateKeyParameters priKeyParameters, byte[] sm2Cipher) ECC私钥解密
static byte[]	encrypt(org.bouncycastle.jcajce.provider.asymmetric.ec.BCECPublicKey pubKey, byte[] srcData)
static byte[]	encrypt(org.bouncycastle.crypto.params.ECPublicKeyParameters pubKeyParameters, byte[] srcData) ECC公钥加密
static byte[]	encrypt(String srcData, String publicKey) 加密数据
static KeyPair	generateKeyPair()
static org.bouncycastle.crypto.AsymmetricCipherKeyPair	generateKeyPairParameter() 生成ECC密钥对
static byte[]	getRawPrivateKey(org.bouncycastle.jcajce.provider.asymmetric.ec.BCECPrivateKey privateKey) 只获取私钥里的d，32字节
static byte[]	getRawPublicKey(org.bouncycastle.jcajce.provider.asymmetric.ec.BCECPublicKey publicKey) 只获取公钥里的XY分量，64字节

Methods inherited from class java.lang.Object

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

Field Detail

CURVE

public static final org.bouncycastle.math.ec.custom.gm.SM2P256V1Curve CURVE

SM2_ECC_P

public static final BigInteger SM2_ECC_P

SM2_ECC_A

public static final BigInteger SM2_ECC_A

SM2_ECC_B

public static final BigInteger SM2_ECC_B

SM2_ECC_N

public static final BigInteger SM2_ECC_N

SM2_ECC_H

public static final BigInteger SM2_ECC_H

SM2_ECC_GX

public static final BigInteger SM2_ECC_GX

SM2_ECC_GY

public static final BigInteger SM2_ECC_GY

G_POINT

public static final org.bouncycastle.math.ec.ECPoint G_POINT

DOMAIN_PARAMS

public static final org.bouncycastle.crypto.params.ECDomainParameters DOMAIN_PARAMS

CURVE_LEN

public static final int CURVE_LEN

JDK_CURVE

public static final EllipticCurve JDK_CURVE

JDK_G_POINT

public static final ECPoint JDK_G_POINT

JDK_EC_SPEC

public static final ECParameterSpec JDK_EC_SPEC

Constructor Detail

SM2Util

public SM2Util()

Method Detail

encrypt

public static byte[] encrypt(String srcData,
                             String publicKey)
                      throws Exception

加密数据

Parameters:

srcData -

publicKey -

Returns:

Throws:

Exception

generateKeyPairParameter

public static org.bouncycastle.crypto.AsymmetricCipherKeyPair generateKeyPairParameter()

生成ECC密钥对

Returns:

ECC密钥对

generateKeyPair

public static KeyPair generateKeyPair()
                               throws NoSuchProviderException,
                                      NoSuchAlgorithmException,
                                      InvalidAlgorithmParameterException

Throws:

NoSuchProviderException

NoSuchAlgorithmException

InvalidAlgorithmParameterException

getRawPrivateKey

public static byte[] getRawPrivateKey(org.bouncycastle.jcajce.provider.asymmetric.ec.BCECPrivateKey privateKey)

只获取私钥里的d，32字节

Parameters:

privateKey -

Returns:

getRawPublicKey

public static byte[] getRawPublicKey(org.bouncycastle.jcajce.provider.asymmetric.ec.BCECPublicKey publicKey)

只获取公钥里的XY分量，64字节

Parameters:

publicKey -

Returns:

encrypt

public static byte[] encrypt(org.bouncycastle.jcajce.provider.asymmetric.ec.BCECPublicKey pubKey,
                             byte[] srcData)
                      throws org.bouncycastle.crypto.InvalidCipherTextException

Throws:

org.bouncycastle.crypto.InvalidCipherTextException

encrypt

public static byte[] encrypt(org.bouncycastle.crypto.params.ECPublicKeyParameters pubKeyParameters,
                             byte[] srcData)
                      throws org.bouncycastle.crypto.InvalidCipherTextException

ECC公钥加密

Parameters:

pubKeyParameters - ECC公钥

srcData - 源数据

Returns:

SM2密文，实际包含三部分：ECC公钥、真正的密文、公钥和原文的SM3-HASH值

Throws:

org.bouncycastle.crypto.InvalidCipherTextException

decrypt

public static byte[] decrypt(org.bouncycastle.jcajce.provider.asymmetric.ec.BCECPrivateKey priKey,
                             byte[] sm2Cipher)
                      throws org.bouncycastle.crypto.InvalidCipherTextException

Throws:

org.bouncycastle.crypto.InvalidCipherTextException

decrypt

public static byte[] decrypt(org.bouncycastle.crypto.params.ECPrivateKeyParameters priKeyParameters,
                             byte[] sm2Cipher)
                      throws org.bouncycastle.crypto.InvalidCipherTextException

ECC私钥解密

Parameters:

priKeyParameters - ECC私钥

sm2Cipher - SM2密文，实际包含三部分：ECC公钥、真正的密文、公钥和原文的SM3-HASH值

Returns:

原文

Throws:

org.bouncycastle.crypto.InvalidCipherTextException