问题描述
出现此错误:
java.security.InvalidAlgorithmParameterException:不支持的曲线:secp256k1(1.3.132.0.10)
有什么方法可以在eclipse中使用secp256k1吗?我找不到任何帮助。如何使用secp256k1生成椭圆曲线的公钥和私钥对?
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.spec.ECGenParameterSpec;
import java.security.spec.*;
public class ECCKeyGeneration {
public static void main(String[] args) {
try {
KeyPairGenerator kpg;
kpg = KeyPairGenerator.getInstance("EC");
ECGenParameterSpec ecsp;
ecsp = new ECGenParameterSpec("secp256k1");
kpg.initialize(ecsp);
KeyPair kp = kpg.genKeyPair();
PrivateKey privKey = kp.getPrivate();
PublicKey pubKey = kp.getPublic();
System.out.println(privKey.toString());
System.out.println(pubKey.toString());
} catch (Exception ex) {
System.out.println(ex);
}
}
}
解决方法
通常,此问题取决于Java版本而不是Eclipse。请运行以下程序(您的程序的稍作编辑的版本),并向我们提供您计算机上正在运行的版本。
这是在线编译器的输出(直接链接:https://repl.it/@javacrypto/JavaEllipticCurveAvailable)
Java Version: main: 11 major: 0 minor: 8+10-post-Ubuntu-0ubuntu118 update: 04 build: 1
sun.security.ec.ECPrivateKeyImpl@5403
Sun EC public key,256 bits
public x coord: 40409384899581786570368833959823834602401842042090899775653557207593518019107
public y coord: 55894232296453671204408524113424724230763480655586911101265852946730642819727
parameters: secp256k1 (1.3.132.0.10)
代码:
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.spec.ECGenParameterSpec;
import java.security.spec.*;
public class Main {
public static void main(String[] args) {
System.out.println("Java Version: " + getJavaVersion());
try {
KeyPairGenerator kpg;
kpg = KeyPairGenerator.getInstance("EC");
ECGenParameterSpec ecsp;
ecsp = new ECGenParameterSpec("secp256k1");
kpg.initialize(ecsp);
KeyPair kp = kpg.genKeyPair();
PrivateKey privKey = kp.getPrivate();
PublicKey pubKey = kp.getPublic();
System.out.println(privKey.toString());
System.out.println(pubKey.toString());
} catch (Exception ex) {
System.out.println(ex);
}
}
public static String getJavaVersion() {
String[] javaVersionElements = System.getProperty("java.runtime.version").split("\\.|_|-b");
String main = "",major = "",minor = "",update = "",build = "";
int elementsSize = javaVersionElements.length;
if (elementsSize > 0) {main = javaVersionElements[0];}
if (elementsSize > 1) {major = javaVersionElements[1];}
if (elementsSize > 2) {minor = javaVersionElements[2];}
if (elementsSize > 3) {update = javaVersionElements[3];}
if (elementsSize > 4) {build = javaVersionElements[4];}
return "main: " + main + " major: " + major + " minor: " + minor + " update: " + update + " build: " + build;
}
}