帮我优化这段直播主讲内容:本次直播为大家带来常用国密算法编程入门与实战,对实战SM2签名与验签、实战SM3杂凑算法、实战SM4加解密算法、SM2签名算法编程入门、SM3杂凑算法编程入门、SM4加解密算法编程入门进行完整详细的内容分享,立即报名,与老师一起实战常用国密算法编程。
时间: 2024-05-19 07:12:35 浏览: 124
本次直播将为大家带来常用国密算法编程入门与实战,旨在帮助大家深入了解实战SM2签名与验签、SM3杂凑算法、SM4加解密算法等内容。我们将进行完整详细的内容分享,让大家轻松掌握SM2签名算法编程入门、SM3杂凑算法编程入门、SM4加解密算法编程入门的技巧和方法。立即报名,与老师一起亲身体验常用国密算法的实战编程,加强自己的技能水平!
相关问题
java 国密p7验签_go/Java 国密sm2签名验签
您好,您的问题似乎有些不明确。您是想了解如何在 Java 或 Go 中使用国密 SM2 算法进行签名和验签,或是想了解如何进行 P7 格式的签名和验签吗?以下是两个问题的回答:
1. 如何在 Java 或 Go 中使用国密 SM2 算法进行签名和验签?
在 Java 中使用国密 SM2 算法进行签名和验签,您可以使用 BouncyCastle 库。具体实现可以参考下面的代码:
Java:
```java
// 加载 BouncyCastle Provider
Security.addProvider(new BouncyCastleProvider());
// 生成密钥对
KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("EC", "BC");
ECGenParameterSpec ecGenParameterSpec = new ECGenParameterSpec("sm2p256v1");
keyPairGenerator.initialize(ecGenParameterSpec, new SecureRandom());
KeyPair keyPair = keyPairGenerator.generateKeyPair();
// 获取私钥和公钥
PrivateKey privateKey = keyPair.getPrivate();
PublicKey publicKey = keyPair.getPublic();
// 签名
Signature signature = Signature.getInstance("SM3withSM2", "BC");
signature.initSign(privateKey);
signature.update(data);
byte[] signatureBytes = signature.sign();
// 验签
signature.initVerify(publicKey);
signature.update(data);
boolean verifyResult = signature.verify(signatureBytes);
```
Go:
```go
// 生成密钥对
privateKey, err := sm2.GenerateKey()
if err != nil {
log.Fatal(err)
}
publicKey := &privateKey.PublicKey
// 签名
hash := sm3.SumSM3(data)
signature, err := privateKey.Sign(rand.Reader, hash[:], nil)
if err != nil {
log.Fatal(err)
}
// 验签
verifyResult := publicKey.Verify(hash[:], signature)
```
2. 如何进行 P7 格式的签名和验签?
在 Java 中进行 P7 格式的签名和验签,您可以使用 BouncyCastle 库。具体实现可以参考下面的代码:
Java:
```java
// 加载 BouncyCastle Provider
Security.addProvider(new BouncyCastleProvider());
// 读取证书和私钥
KeyStore keyStore = KeyStore.getInstance("PKCS12");
keyStore.load(new FileInputStream("keystore.p12"), "password".toCharArray());
PrivateKey privateKey = (PrivateKey) keyStore.getKey("alias", "password".toCharArray());
Certificate[] certChain = keyStore.getCertificateChain("alias");
X509Certificate cert = (X509Certificate) certChain[0];
// 加载证书链
JcaCertStore jcaCertStore = new JcaCertStore(Arrays.asList(certChain));
// 签名
ContentSigner signer = new JcaContentSignerBuilder("SM3withSM2").setProvider("BC").build(privateKey);
CMSTypedData cmsData = new CMSProcessableByteArray(data);
CMSSignedDataGenerator generator = new CMSSignedDataGenerator();
generator.addSignerInfoGenerator(new JcaSignerInfoGeneratorBuilder(new JcaDigestCalculatorProviderBuilder().build()).build(signer, cert));
generator.addCertificates(jcaCertStore);
CMSSignedData signedData = generator.generate(cmsData, true);
byte[] signedBytes = signedData.getEncoded();
// 验签
CMSSignedData cms = new CMSSignedData(signedBytes);
SignerInformationStore signers = cms.getSignerInfos();
Collection<SignerInformation> c = signers.getSigners();
Iterator<SignerInformation> it = c.iterator();
if (it.hasNext()) {
SignerInformation signer = it.next();
X509CertificateHolder certHolder = (X509CertificateHolder) cms.getCertificates().getMatches(signer.getSID()).iterator().next();
if (signer.verify(new JcaSimpleSignerInfoVerifierBuilder().build(certHolder))) {
return true;
}
}
return false;
```
Go:
```go
// 读取证书和私钥
pemData, err := ioutil.ReadFile("keystore.pem")
if err != nil {
log.Fatal(err)
}
blocks := pem.Decode(pemData)
key, err := x509.ParsePKCS8PrivateKey(blocks.Bytes)
if err != nil {
log.Fatal(err)
}
certData, err := ioutil.ReadFile("cert.pem")
if err != nil {
log.Fatal(err)
}
cert, err := x509.ParseCertificate(certData)
if err != nil {
log.Fatal(err)
}
// 加载证书链
certs := []*x509.Certificate{cert}
intermediateData, err := ioutil.ReadFile("intermediate.pem")
if err == nil {
for {
blocks := pem.Decode(intermediateData)
if blocks == nil {
break
}
intermediateCert, err := x509.ParseCertificate(blocks.Bytes)
if err != nil {
log.Fatal(err)
}
certs = append(certs, intermediateCert)
}
}
// 签名
hash := sm3.SumSM3(data)
signedData, err := cms.NewSignedData(hash[:], key, cert, certs...)
if err != nil {
log.Fatal(err)
}
signedBytes, err := signedData.ToDER()
if err != nil {
log.Fatal(err)
}
// 验签
cms, err := cms.ParseCMS(signedBytes)
if err != nil {
log.Fatal(err)
}
signerInfos := cms.GetSignerInfos()
for _, signerInfo := range signerInfos {
err = signerInfo.Verify(cert)
if err == nil {
return true
}
}
return false
```
国密算法SM2签名、SM2验证签名示例
好的,我可以为你提供国密算法SM2的签名和验证签名示例。以下是示例代码:
签名示例(使用Java语言):
```java
import org.bouncycastle.crypto.AsymmetricCipherKeyPair;
import org.bouncycastle.crypto.CryptoException;
import org.bouncycastle.crypto.digests.SM3Digest;
import org.bouncycastle.crypto.engines.SM2Engine;
import org.bouncycastle.crypto.generators.ECKeyPairGenerator;
import org.bouncycastle.crypto.params.*;
import org.bouncycastle.crypto.signers.SM2Signer;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import java.math.BigInteger;
import java.security.*;
import java.security.spec.ECGenParameterSpec;
public class SM2SignatureExample {
public static void main(String[] args) {
Security.addProvider(new BouncyCastleProvider());
try {
// 生成密钥对
KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("EC", "BC");
ECGenParameterSpec ecGenParameterSpec = new ECGenParameterSpec("sm2p256v1");
keyPairGenerator.initialize(ecGenParameterSpec, new SecureRandom());
KeyPair keyPair = keyPairGenerator.generateKeyPair();
// 获取私钥和公钥
PrivateKey privateKey = keyPair.getPrivate();
PublicKey publicKey = keyPair.getPublic();
// 待签名的数据
byte[] data = "Hello, SM2!".getBytes();
// 执行签名操作
SM2Signer signer = new SM2Signer(); signer.init(true, new ParametersWithRandom(privateKey, new SecureRandom()));
signer.update(data, 0, data.length);
byte[] signature = signer.generateSignature();
System.out.println("签名值: " + new BigInteger(1,
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