如何实现Java SM2与OpenSSL SM2的对接
1. 流程图
gantt
title 实现Java SM2与OpenSSL SM2的对接流程
section 完成步骤
Java SM2实现 --> OpenSSL SM2实现: 密钥生成
OpenSSL SM2实现 --> Java SM2实现: 加密数据
Java SM2实现 --> OpenSSL SM2实现: 解密数据
2. 实现步骤及代码示例
2.1 密钥生成
在Java中使用BouncyCastle库生成SM2密钥对,OpenSSL中使用openssl命令生成。
| 步骤 | 操作 | 代码示例 |
|---|---|---|
| 1 | Java生成SM2密钥对 | |
| ```java | ||
| import org.bouncycastle.jce.provider.BouncyCastleProvider; | ||
| import org.bouncycastle.jce.interfaces.ECPrivateKey; | ||
| import org.bouncycastle.jce.interfaces.ECPublicKey; | ||
| import org.bouncycastle.jce.spec.ECNamedCurveParameterSpec; | ||
| import org.bouncycastle.jce.spec.ECPrivateKeySpec; | ||
| import org.bouncycastle.jce.spec.ECPublicKeySpec; | ||
| Security.addProvider(new BouncyCastleProvider()); | ||
| KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("SM2", "BC"); | ||
| ECGenParameterSpec sm2p256v1 = new ECGenParameterSpec("sm2p256v1"); | ||
| keyPairGenerator.initialize(sm2p256v1, new SecureRandom()); | ||
| KeyPair keyPair = keyPairGenerator.generateKeyPair(); | ||
| ECPrivateKey privateKey = (ECPrivateKey) keyPair.getPrivate(); | ||
| ECPublicKey publicKey = (ECPublicKey) keyPair.getPublic(); | ||
| ``` | ||
| 2 | OpenSSL生成SM2密钥对 | |
| ```bash | ||
| openssl ecparam -name SM2 -genkey -noout -out private.pem | ||
| openssl ec -in private.pem -pubout -out public.pem | ||
| ``` |
2.2 加密数据
在Java中使用BouncyCastle库实现SM2加密,OpenSSL中使用openssl命令实现。
| 步骤 | 操作 | 代码示例 |
|---|---|---|
| 1 | Java实现SM2加密 | |
| ```java | ||
| Cipher cipher = Cipher.getInstance("SM2", "BC"); | ||
| cipher.init(Cipher.ENCRYPT_MODE, publicKey); | ||
| byte[] encryptedData = cipher.doFinal(plainText.getBytes("UTF-8")); | ||
| ``` | ||
| 2 | OpenSSL实现SM2加密 | |
| ```bash | ||
| echo -n "Hello, SM2!" > plain.txt | ||
| openssl sm2 -encrypt -in plain.txt -out encrypted.bin -inkey public.pem | ||
| ``` |
2.3 解密数据
在Java中使用BouncyCastle库实现SM2解密,OpenSSL中使用openssl命令实现。
| 步骤 | 操作 | 代码示例 |
|---|---|---|
| 1 | Java实现SM2解密 | |
| ```java | ||
| Cipher cipher = Cipher.getInstance("SM2", "BC"); | ||
| cipher.init(Cipher.DECRYPT_MODE, privateKey); | ||
| byte[] decryptedData = cipher.doFinal(encryptedData); | ||
| String decryptedText = new String(decryptedData, "UTF-8"); | ||
| System.out.println(decryptedText); | ||
| ``` | ||
| 2 | OpenSSL实现SM2解密 | |
| ```bash | ||
| openssl sm2 -decrypt -in encrypted.bin -out plain.txt -inkey private.pem | ||
| cat plain.txt | ||
| ``` |
结束语
通过以上步骤,你可以实现Java SM2与OpenSSL SM2的对接。希望这篇文章对你有所帮助,加油!
















