提议描述:
通常有些场景是将公私钥配置在配置文件或者配置中心里面,这个时候我们的工具类似乎就有点力不从心,当然可以自己实现。

例子:
加载公钥:

twgc.gm.sm2.SM2Util#loadPublicFromFile

    public static PublicKey loadPublicFromFile(String filename) throws IOException, NoSuchProviderException, NoSuchAlgorithmException, InvalidKeySpecException {
        try (PemReader pemReader = new PemReader(new FileReader(filename))) {
            PemObject spki = pemReader.readPemObject();
            Security.getProvider(BouncyCastleProvider.PROVIDER_NAME);
            return KeyFactory.getInstance(Const.EC_VALUE, BouncyCastleProvider.PROVIDER_NAME).generatePublic(new X509EncodedKeySpec(spki.getContent()));
        }
    }

期望:

// 提供类似的方法可以通过读取字符串来加载
PemReader pemReader = new PemReader(new StringReader(publicKey))

use sm4 to encrypt and decrypt data sample?
for java based chaincode?

例如：

    public static PublicKey loadPublicFromFile(String filename) throws IOException, NoSuchProviderException, NoSuchAlgorithmException, InvalidKeySpecException {
        FileReader fr = new FileReader(filename);
        PemObject spki = new PemReader(fr).readPemObject();
        fr.close();
        Provider p = Security.getProvider(BouncyCastleProvider.PROVIDER_NAME);
        return KeyFactory.getInstance(Const.EC_VALUE, BouncyCastleProvider.PROVIDER_NAME).generatePublic(new X509EncodedKeySpec(spki.getContent()));
    }

Description Resource Path Location Type Resource leak: '' is never closed SM2Util.java /java-gm/src/main/java/twgc/gm/sm2 line 241 Java Problem

2. SM2的密钥基于证书文件，没有提供基于hash to Byte 的转化方法，因此和JS（sm-crypto）的互操作比较困的

Cipher cipher = Cipher.getInstance(sm4ModeAndPaddingEnum.getName(), BouncyCastleProvider.PROVIDER_NAME);

我们可以吧cipher作为枚举值么？ 这样就避免了每次都去getInstance了。

`
/**
* 加密数据
* @param srcMsg 源信息
* @param certPath 证书路径
* @param charSet 字符编码
* @return
* @throws Exception
*/
public String envelopeMessage(String srcMsg, String certPath, String charSet) throws Exception {
CertificateFactory certificatefactory;
X509Certificate cert;
// 使用公钥对对称密钥进行加密 //若此处不加参数 "BC" 会报异常：CertificateException -
certificatefactory = CertificateFactory.getInstance("X.509", "BC");
// 读取.crt文件；你可以读取绝对路径文件下的crt，返回一个InputStream（或其子类）即可。
InputStream bais = new FileInputStream(certPath);
cert = (X509Certificate) certificatefactory.generateCertificate(bais);
//添加数字信封
CMSTypedData msg = new CMSProcessableByteArray(srcMsg.getBytes(charSet));
CMSEnvelopedDataGenerator edGen = new CMSEnvelopedDataGenerator();
edGen.addRecipientInfoGenerator(new JceKeyTransRecipientInfoGenerator(
cert).setProvider("BC"));
CMSEnvelopedData ed = edGen.generate(msg,
new JceCMSContentEncryptorBuilder(PKCSObjectIdentifiers.RC2_CBC)
.setProvider("BC").build());
String rslt = new String(Base64.encode(ed.getEncoded()));
System.out.println(rslt);
return rslt;
}

public MessageUtil() {
Security.addProvider(new BouncyCastleProvider());
// Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());
}

`
org.bouncycastle.cms.CMSException: exception wrapping content key: cannot create cipher: No such algorithm: 1.2.840.10045.2.1

at org.bouncycastle.cms.KeyTransRecipientInfoGenerator.generate(Unknown Source)
at org.bouncycastle.cms.CMSEnvelopedDataGenerator.doGenerate(Unknown Source)
at org.bouncycastle.cms.CMSEnvelopedDataGenerator.generate(Unknown Source)
at MessageUtil.envelopeMessage(MessageUtil.java:167)
at envelopeTest.generate(envelopeTest.java:8)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

Caused by: org.bouncycastle.operator.OperatorCreationException: cannot create cipher: No such algorithm: 1.2.840.10045.2.1
at org.bouncycastle.operator.jcajce.OperatorHelper.createAsymmetricWrapper(Unknown Source)
at org.bouncycastle.operator.jcajce.JceAsymmetricKeyWrapper.generateWrappedKey(Unknown Source)
... 27 more
Caused by: java.security.NoSuchAlgorithmException: No such algorithm: 1.2.840.10045.2.1
at javax.crypto.Cipher.getInstance(Cipher.java:688)
at javax.crypto.Cipher.getInstance(Cipher.java:596)
at org.bouncycastle.jcajce.util.NamedJcaJceHelper.createCipher(Unknown Source)
... 29 more
`

The encryption certificate used is as follow:

-----BEGIN CERTIFICATE----- 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 -----END CERTIFICATE-----

 java % pwd
/Users/yuanyi/OpenSource/java-gm/src/main/java
 java % ls
Interact.java   SM3Util.java    SM4Util.java

refactor needed for this structure.

as a sample for sm2/3 impl for fabric sdk?

关于

• check style
• gradle
• 互操作测试

1.2.156.10197.1.501 SM2Sign-with-SM3
1.2.156.10197.1.502 SM2Sign-with-SHA1
1.2.156.10197.1.503 SM2Sign-with-SHA256
1.2.156.10197.1.504 SM2Sign-with-SHA511
1.2.156.10197.1.505 SM2Sign-with-SHA224
1.2.156.10197.1.506 SM2Sign-with-SHA384
1.2.156.10197.1.507 SM2Sign-with-RMD160

@davidkhala , do we need add sample for above all?

make a factory to create sm2/3 basic actions for

• pem generate.
• cert generate.
• digest and sign/verify.
• encrypt/decrypt.
• key load.
• others?

@xiaohui249 , any other suggestions?

1. upgrade bouncycastle to latest
2. add test case for hash256sm2 etc support
3. add mvn repo mirror as download from main repo is too slow some time due to network issue

impl for CryptoSuite & CryptoSuiteFactory

需要certificate pem

without JCE, dont need init BC provider

sm2 en/decrypt use which append mode? C1|C2|C3 or C1|C3|C2

relate:
bcgit/bc-java#478
bcgit/bc-java@bda04fc

我发现有一个gradle jar放在代码当中，它是必要的么？

use a github action to publish java package

看了synchronized同步代码，以及SM4Util的公开构造方法。我的想法：1、改成synchronized，目的应该是避免一个SM4Util单实例使用出现线程安全问题，但是影响了性能，而且并没有从实质上解决线程安全问题，线程安全问题是由Cipher引起的，而Cipher对象是公用的，无法保证调用者单例使用；2、SM4Util的构造方法是public的，所以从这个层面来讲，上一步的synchronized意义不大，而且实例化SM4Util时，Cipher.getInstance仍然要执行一遍。

ref
https://www.jianshu.com/p/175f746be1b4
https://github.com/melix/jmh-gradle-plugin

Hi @davidkhala ,

could you please ref doc here for update azp for jar file release?
https://docs.microsoft.com/zh-cn/azure/devops/pipelines/artifacts/maven?view=azure-devops

I can't see Artifacts tag with my azp premission.