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Sm9Example.java
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60 lines (44 loc) · 1.76 KB
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/*
* Copyright 2014-2023 The GmSSL Project. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
*
* http://www.apache.org/licenses/LICENSE-2.0
*/
import org.gmssl.Sm9EncMasterKey;
import org.gmssl.Sm9EncKey;
import org.gmssl.Sm9SignMasterKey;
import org.gmssl.Sm9SignKey;
import org.gmssl.Sm9Signature;
public class Sm9Example {
public static void main(String[] args) {
Sm9SignMasterKey sign_master_key = new Sm9SignMasterKey();
sign_master_key.generateMasterKey();
Sm9SignKey sign_key = sign_master_key.extractKey("Alice");
Sm9Signature sign = new Sm9Signature(true);
sign.update("abc".getBytes());
byte[] sig = sign.sign(sign_key);
sign_master_key.exportPublicMasterKeyPem("sm9sign.mpk");
Sm9SignMasterKey sign_master_pub_key = new Sm9SignMasterKey();
sign_master_pub_key.importPublicMasterKeyPem("sm9sign.mpk");
Sm9Signature verify = new Sm9Signature(false);
verify.update("abc".getBytes());
boolean verify_ret = verify.verify(sig, sign_master_pub_key, "Alice");
System.out.println("Verify result = " + verify_ret);
Sm9EncMasterKey enc_master_key = new Sm9EncMasterKey();
enc_master_key.generateMasterKey();
enc_master_key.exportPublicMasterKeyPem("sm9enc.mpk");
Sm9EncMasterKey enc_master_pub_key = new Sm9EncMasterKey();
enc_master_pub_key.importPublicMasterKeyPem("sm9enc.mpk");
byte[] ciphertext = enc_master_pub_key.encrypt("abc".getBytes(), "Bob");
Sm9EncKey enc_key = enc_master_key.extractKey("Bob");
byte[] plaintext = enc_key.decrypt(ciphertext);
int i;
System.out.printf("plaintext: ");
for (i = 0; i < plaintext.length; i++) {
System.out.printf("%02x", plaintext[i]);
}
System.out.print("\n");
}
}