KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA"); // 初始化KeyPairGenerator keyPairGenerator.initialize(KEY_SIZE); // 生成密钥对 KeyPair keyPair = keyPairGenerator.generateKeyPair(); // 获取公钥和
section Generate RSA Key Pair Generate Key Pair: 生成RSA密钥对 section Extract Public Key Extract Public Key 1: 从私钥中提取第一个公钥 Extract Public Key 2: 从私钥中提取第二个公钥 ... Extract Public Key n: 从私钥中提取第n个公钥 具体步骤: 2.1 从指定私钥中提取公钥 importjava.security.KeyFac...
publicclassRSAKeyPairGenerator{publicstaticvoidmain(String[]args){try{// 创建一个密钥对生成器,指定为RSAKeyPairGeneratorkeyPairGenerator=KeyPairGenerator.getInstance("RSA");// 初始化密钥大小为2048位keyPairGenerator.initialize(2048);// 生成密钥对KeyPairkeyPair=keyPairGenerator.generateKeyPair();// 获...
keyPairGen.initialize(1024,newSecureRandom()); // 生成一个密钥对,保存在keyPair中 KeyPair keyPair = keyPairGen.generateKeyPair(); // 得到私钥 RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate(); // 得到公钥 RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic(); // ...
try { String teststring = "1234567890"; // 生成公私钥 KeyPair keypair = generateRSAKeyPair(KEY_SIZE ); RSAPublicKey publicKey = (RSAPublicKey)keypair.getPublic(); RSAPrivateKey privateKey = (RSAPrivateKey)keypair.getPrivate(); byte[] en_data = encryptWithRSA(teststring.getBytes(), pu...
public static String encrypt(String str,String publicKey) throws Exception { //base64编码的公钥 byte[] decoded = decryptBASE64(publicKey); Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider()); RSAPublicKey pubKey = (RSAPublicKey) KeyFactory.getInstance("RSA").generatePublic...
// 创建 KeyPairGenerator 对象,并指定 RSA 算法 KeyPairGenerator keyPairGen = KeyPairGenerator.getInstance(ALGORITHM); keyPairGen.initialize(2048); // 生成公钥和私钥 KeyPair keyPair = keyPairGen.generateKeyPair(); PublicKey publicKey = keyPair.getPublic(); ...
* RSA最大解密密文大小 */private static final int MAX_DECRYPT_BLOCK=128; 生成密钥: public static Map<String,Object>genKeyPair()throws Exception{KeyPairGenerator keyPairGen=KeyPairGenerator.getInstance(KEY_ALGORITHM);keyPairGen.initialize(1024);KeyPair keyPair=keyPairGen.generateKeyPair();RSAPublic...
("RSA");generator.initialize(2048);// 设置密钥长度KeyPairkeyPair=generator.generateKeyPair();System.out.println("Public Key: "+keyPair.getPublic());System.out.println("Private Key: "+keyPair.getPrivate());}catch(NoSuchAlgorithmExceptione){System.out.println("RSA algorithm not found.");}}...
* RSA最大解密密文大小 */private static final int MAX_DECRYPT_BLOCK=128; 生成密钥: public static Map<String,Object>genKeyPair()throws Exception{KeyPairGenerator keyPairGen=KeyPairGenerator.getInstance(KEY_ALGORITHM);keyPairGen.initialize(1024);KeyPair keyPair=keyPairGen.generateKeyPair();RSAPublic...