Package cn.dinodev.spring.commons.crypto

Class Sm2

java.lang.Object

cn.dinodev.spring.commons.crypto.Sm2

public class Sm2
extends Object

Author:

Cody Lu

Field Summary

Fields

Modifier and Type	Field	Description
static final org.bouncycastle.math.ec.custom.gm.SM2P256V1Curve	CURVE
static final int	CURVE_LEN
static final org.bouncycastle.math.ec.ECPoint	G_POINT
static final EllipticCurve	JDK_CURVE
static final ECParameterSpec	JDK_EC_SPEC
static final ECPoint	JDK_G_POINT
static final org.bouncycastle.crypto.params.ECDomainParameters	SM2_DOMAIN
static final BigInteger	SM2_ECC_A
static final BigInteger	SM2_ECC_B
static final BigInteger	SM2_ECC_GX
static final BigInteger	SM2_ECC_GY
static final BigInteger	SM2_ECC_H
static final BigInteger	SM2_ECC_N
static final BigInteger	SM2_ECC_P

Constructor Summary

Constructors

Constructor	Description
Sm2()

Method Summary

Modifier and Type	Method	Description
static org.bouncycastle.crypto.params.ECPrivateKeyParameters	buildECPrivateKeyParameters(byte[] privateKey)	构建私钥参数
static org.bouncycastle.crypto.params.ECPublicKeyParameters	buildECPublicKeyParameters(byte[] publicKey)	构建公钥参数
static byte[]	decrypt(byte[] input, byte[] privateKey)	私钥解密, 默认使用SM2Engine.Mode.C1C2C3
static byte[]	decrypt(byte[] input, byte[] privateKey, org.bouncycastle.crypto.engines.SM2Engine.Mode mode)	私钥解密
static byte[]	decrypt(byte[] input, org.bouncycastle.crypto.params.ECPrivateKeyParameters ecPrivateKeyParameters, org.bouncycastle.crypto.engines.SM2Engine.Mode mode)	私钥解密
static byte[]	encrypt(byte[] input, byte[] publicKey)	公钥加密, 默认使用SM2Engine.Mode.C1C2C3
static byte[]	encrypt(byte[] input, byte[] publicKey, org.bouncycastle.crypto.engines.SM2Engine.Mode mode)	公钥加密
static byte[]	encrypt(byte[] input, org.bouncycastle.crypto.params.ECPublicKeyParameters ecPublicKeyParameters, org.bouncycastle.crypto.engines.SM2Engine.Mode mode)	公钥加密
static KeyPair	generateKeyPair()	生成密钥对
static int	getCurveLength(org.bouncycastle.crypto.params.ECDomainParameters domainParams)	计算椭圆曲线的长度
static byte[]	getRawPrivateKey(org.bouncycastle.crypto.params.ECPrivateKeyParameters privateKey)	取私钥里的d值
static byte[]	getRawPublicKey(org.bouncycastle.crypto.params.ECPublicKeyParameters publicKey)	取公钥里的XY分量
static Sm2Signature	sign(byte[] input, byte[] privateKey, byte[] ID)	私钥签名
static Sm2Signature	sign(byte[] input, org.bouncycastle.crypto.params.ECPrivateKeyParameters ecPrivateKeyParameters, byte[] ID)	私钥签名
static boolean	verifySign(byte[] input, Sm2Signature signature, byte[] publicKey, byte[] ID)	公钥验证签名
static boolean	verifySign(byte[] input, Sm2Signature signature, org.bouncycastle.crypto.params.ECPublicKeyParameters ecPublicKeyParameters, byte[] ID)	公钥验证签名

Methods inherited from class java.lang.Object

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

Field Details

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

SM2_DOMAIN

public static final org.bouncycastle.crypto.params.ECDomainParameters SM2_DOMAIN

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 Details

Sm2

public Sm2()

Method Details

getCurveLength

public static int getCurveLength(org.bouncycastle.crypto.params.ECDomainParameters domainParams)

计算椭圆曲线的长度

Parameters:

domainParams -

Returns:

generateKeyPair

public static KeyPair generateKeyPair()

生成密钥对

Returns:

buildECPublicKeyParameters

public static org.bouncycastle.crypto.params.ECPublicKeyParameters buildECPublicKeyParameters(byte[] publicKey)

构建公钥参数

Parameters:

publicKey -

Returns:

buildECPrivateKeyParameters

public static org.bouncycastle.crypto.params.ECPrivateKeyParameters buildECPrivateKeyParameters(byte[] privateKey)

构建私钥参数

Parameters:

privateKey -

Returns:

getRawPrivateKey

public static byte[] getRawPrivateKey(org.bouncycastle.crypto.params.ECPrivateKeyParameters privateKey)

取私钥里的d值

Parameters:

privateKey -

Returns:

Curve长度的字节数组

getRawPublicKey

public static byte[] getRawPublicKey(org.bouncycastle.crypto.params.ECPublicKeyParameters publicKey)

取公钥里的XY分量

Parameters:

publicKey -

Returns:

2倍Curve长度的字节数组

encrypt

public static byte[] encrypt(byte[] input,
 org.bouncycastle.crypto.params.ECPublicKeyParameters ecPublicKeyParameters,
 org.bouncycastle.crypto.engines.SM2Engine.Mode mode)
                      throws org.bouncycastle.crypto.InvalidCipherTextException

公钥加密

Parameters:

input - 待加密数据

ecPublicKeyParameters - 公钥参数

mode - 加密方式

Returns:

Throws:

org.bouncycastle.crypto.InvalidCipherTextException

encrypt

public static byte[] encrypt(byte[] input,
 byte[] publicKey,
 org.bouncycastle.crypto.engines.SM2Engine.Mode mode)
                      throws org.bouncycastle.crypto.InvalidCipherTextException

公钥加密

Parameters:

input - 待加密数据

publicKey - 公钥参数

mode - 加密方式

Returns:

Throws:

org.bouncycastle.crypto.InvalidCipherTextException

encrypt

public static byte[] encrypt(byte[] input,
 byte[] publicKey)
                      throws org.bouncycastle.crypto.InvalidCipherTextException

公钥加密, 默认使用SM2Engine.Mode.C1C2C3

Parameters:

input - 待加密数据

publicKey - 公钥参数

Returns:

Throws:

org.bouncycastle.crypto.InvalidCipherTextException

decrypt

public static byte[] decrypt(byte[] input,
 org.bouncycastle.crypto.params.ECPrivateKeyParameters ecPrivateKeyParameters,
 org.bouncycastle.crypto.engines.SM2Engine.Mode mode)
                      throws org.bouncycastle.crypto.InvalidCipherTextException

私钥解密

Parameters:

input - 待解密数据

ecPrivateKeyParameters - 私钥参数

mode - 加密方式

Returns:

Throws:

org.bouncycastle.crypto.InvalidCipherTextException

decrypt

public static byte[] decrypt(byte[] input,
 byte[] privateKey,
 org.bouncycastle.crypto.engines.SM2Engine.Mode mode)
                      throws org.bouncycastle.crypto.InvalidCipherTextException

私钥解密

Parameters:

input - 待解密数据

privateKey - 私钥参数

mode - 加密方式

Returns:

Throws:

org.bouncycastle.crypto.InvalidCipherTextException

decrypt

public static byte[] decrypt(byte[] input,
 byte[] privateKey)
                      throws org.bouncycastle.crypto.InvalidCipherTextException

私钥解密, 默认使用SM2Engine.Mode.C1C2C3

Parameters:

input - 待解密数据

privateKey - 私钥参数

Returns:

Throws:

org.bouncycastle.crypto.InvalidCipherTextException

sign

public static Sm2Signature sign(byte[] input,
 org.bouncycastle.crypto.params.ECPrivateKeyParameters ecPrivateKeyParameters,
 byte[] ID)
                         throws org.bouncycastle.crypto.CryptoException

私钥签名

Parameters:

input - 待签名数据

ecPrivateKeyParameters - 私钥数据

ID - 用户标识

Returns:

Throws:

org.bouncycastle.crypto.CryptoException

sign

public static Sm2Signature sign(byte[] input,
 byte[] privateKey,
 byte[] ID)
                         throws org.bouncycastle.crypto.CryptoException

私钥签名

Parameters:

input - 待签名数据

privateKey - 私钥数据

ID - 用户标识

Returns:

Throws:

org.bouncycastle.crypto.CryptoException

verifySign

public static boolean verifySign(byte[] input,
 Sm2Signature signature,
 org.bouncycastle.crypto.params.ECPublicKeyParameters ecPublicKeyParameters,
 byte[] ID)
                          throws IOException

公钥验证签名

Parameters:

input - 原始数据

SM2SignResult - 签名

ecPublicKeyParameters - 公钥参数

ID - 用户标识

Returns:

Throws:

IOException

verifySign

public static boolean verifySign(byte[] input,
 Sm2Signature signature,
 byte[] publicKey,
 byte[] ID)
                          throws IOException

公钥验证签名

Parameters:

input - 原始数据

SM2SignResult - 签名

publicKey - 公钥参数

ID - 用户标识

Returns:

Throws:

IOException