zhouxy108/hutool
1
0
Fork 0
mirror of https://gitee.com/chinabugotech/hutool.git synced 2025-07-21 15:09:48 +08:00
Code Issues Packages Projects Releases Wiki Activity

add method

Browse Source
This commit is contained in:
Looly
2021-02-22 16:21:43 +08:00
parent 66bdcac2b0
commit 76eb65249a
6 changed files with 70 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
hutool-crypto/src/main/java/cn/hutool/crypto/SmUtil.java
View File

@@ -16,6 +16,8 @@ import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.gm.GMNamedCurves;
import org.bouncycastle.crypto.digests.SM3Digest;
import org.bouncycastle.crypto.params.ECDomainParameters;
import org.bouncycastle.crypto.signers.DSAEncoding;
import org.bouncycastle.crypto.signers.StandardDSAEncoding;
import org.bouncycastle.util.Arrays;
import org.bouncycastle.util.encoders.Hex;
@@ -193,6 +195,35 @@ public class SmUtil {
return result;
}
/**
* 将sm2签名结果解码为R和S值
*
* @param encoding {@link DSAEncoding}
* @param rsDer 签名结果的DER表示形式
* @return R和S值，结果为64位，前32位为R，后32为为S
* @since 5.5.9
*/
public static byte[] decode(DSAEncoding encoding, byte[] rsDer){
if(null == encoding){
encoding = StandardDSAEncoding.INSTANCE;
}
final BigInteger[] decode;
try {
decode = encoding.decode(SM2_DOMAIN_PARAMS.getN(), rsDer);
} catch (IOException e) {
throw new IORuntimeException(e);
}
byte[] r = bigIntToFixedLengthBytes(decode[0]);
byte[] s = bigIntToFixedLengthBytes(decode[1]);
byte[] result = new byte[RS_LEN * 2];
System.arraycopy(r, 0, result, 0, r.length);
System.arraycopy(s, 0, result, RS_LEN, s.length);
return result;
}
/**
* BC的SM3withSM2签名得到的结果的rs是asn1格式的，这个方法转化成直接拼接r||s<br>
* 来自：https://blog.csdn.net/pridas/article/details/86118774

12
hutool-crypto/src/main/java/cn/hutool/crypto/asymmetric/SM2.java
View File

@@ -62,8 +62,8 @@ public class SM2 extends AbstractAsymmetricCrypto<SM2> {
* 私钥和公钥同时为空时生成一对新的私钥和公钥<br>
* 私钥和公钥可以单独传入一个，如此则只能使用此钥匙来做加密或者解密
*
* @param privateKeyStr 私钥Hex或Base64表示
* @param publicKeyStr 公钥Hex或Base64表示
* @param privateKeyStr 私钥Hex或Base64表示，必须使用PKCS#8规范
* @param publicKeyStr 公钥Hex或Base64表示，必须使用X509规范
*/
public SM2(String privateKeyStr, String publicKeyStr) {
this(SecureUtil.decode(privateKeyStr), SecureUtil.decode(publicKeyStr));
@@ -74,8 +74,8 @@ public class SM2 extends AbstractAsymmetricCrypto<SM2> {
* 私钥和公钥同时为空时生成一对新的私钥和公钥<br>
* 私钥和公钥可以单独传入一个，如此则只能使用此钥匙来做加密或者解密
*
* @param privateKey 私钥
* @param publicKey 公钥
* @param privateKey 私钥，必须使用PKCS#8规范
* @param publicKey 公钥，必须使用X509规范
*/
public SM2(byte[] privateKey, byte[] publicKey) {
this(//
@@ -135,8 +135,8 @@ public class SM2 extends AbstractAsymmetricCrypto<SM2> {
* 私钥和公钥同时为空时生成一对新的私钥和公钥<br>
* 私钥和公钥可以单独传入一个，如此则只能使用此钥匙来做加密或者解密
*
* @param privateKeyParams 私钥
* @param publicKeyParams 公钥
* @param privateKeyParams 私钥，可以为null
* @param publicKeyParams 公钥，可以为null
*/
public SM2(ECPrivateKeyParameters privateKeyParams, ECPublicKeyParameters publicKeyParams) {
super(ALGORITHM_SM2, null, null);