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来自java2s.com的示例:

Example from java2s.com:

import java.io.FileInputStream;
import java.security.Key;
import java.security.KeyPair;
import java.security.KeyStore;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.cert.Certificate;

public class Main {
  public static void main(String[] argv) throws Exception {
    FileInputStream is = new FileInputStream("your.keystore");

    KeyStore keystore = KeyStore.getInstance(KeyStore.getDefaultType());
    keystore.load(is, "my-keystore-password".toCharArray());

    String alias = "myalias";

    Key key = keystore.getKey(alias, "password".toCharArray());
    if (key instanceof PrivateKey) {
      // Get certificate of public key
      Certificate cert = keystore.getCertificate(alias);

      // Get public key
      PublicKey publicKey = cert.getPublicKey();

      // Return a key pair
      new KeyPair(publicKey, (PrivateKey) key);
    }
  }
}

另请参阅:

• http://www.java2s.com/Code/Java/Security/从KeyStore.htm中检索KeyPair
• 如何检索我创建的密钥库中的公钥和私钥

• http://www.java2s.com/Code/Java/Security/RetrievingaKeyPairfromaKeyStore.htm
• How to retrieve my public and private key from the keystore we created

更新:

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