PrivateKey privateKey = keyPair.getPrivate(); Cipher cipher = Cipher.getInstance(“RSA”); String plainText = “Hello World”; cipher.init(Cipher.ENCRYPT_MODE, publicKey); byte[] encryptedText = cipher.doFinal(plainText.getBytes()); cipher.init(Cipher.DECRYPT_MODE, privateKey); byte[] dec...
importjava.security.*;importjavax.crypto.*;publicclassRSACipherExample{publicstaticvoidmain(String[]args)throwsException{// 生成RSA密钥对KeyPairGeneratorkeyPairGenerator=KeyPairGenerator.getInstance("RSA");keyPairGenerator.initialize(2048);KeyPairkeyPair=keyPairGenerator.generateKeyPair();PublicKeypublicKey=...
importjava.security.KeyPair;importjava.security.KeyPairGenerator;importjava.security.PrivateKey;importjava.security.PublicKey;importjava.security.SecureRandom;importjavax.crypto.Cipher;publicclassRSAExample{publicstaticvoidmain(String[]args)throwsException{// 生成RSA公钥和私钥对KeyPairGeneratorkeyPairGenerator=Ke...
import java.security.*;import java.security.spec.PKCS8EncodedKeySpec;import java.security.spec.X509EncodedKeySpec;import java.util.Base64;public class RSAExample {// 生成密钥对public static KeyPair generateKeyPair() throws NoSuchAlgorithmException {KeyPairGenerator keyPairGenerator = KeyPairGenerator.g...
{Cipher cipher=Cipher.getInstance("RSA");cipher.init(Cipher.ENCRYPT_MODE,publicKey);returncipher.doFinal(data);}// 使用私钥解密数据publicstaticbyte[]decrypt(PrivateKey privateKey,byte[]encryptedData)throws GeneralSecurityException{Cipher cipher=Cipher.getInstance("RSA");cipher.init(Cipher.DECRYPT_MODE,...
(has no random component) attackers can successfully launch a https://en.wikipedia.org/wiki/Chosen-plaintext_attack against by encrypting likely plaintexts with the public key and test if they are equal to the ciphertext. This may not be a problem, but is aweakness, that should be ...
javax.crypto.Cipher 类的实例用于使用上面产生的密钥对对信息进行加解密。 importjava.io.File; importjava.io.FileInputStream; importjava.io.FileNotFoundException; importjava.io.FileOutputStream; importjava.io.IOException; importjava.io.ObjectInputStream; ...
whichAappends to the message. Anyone can then decrypt the message using the public keydto recover the digest, which one can also compute independently from the message. If the two agree, one must conclude thatAoriginated the cipher, since onlyAkneweand hence could have encrypted the message....
public class RSAExample {/*** 创建密钥规范*/public static final String RSA_KEY = "RSA";public static void main(String[] args) throws Exception {//注:这里加密解密要用同一个 一对存在KeyPair keyPair = keyPairInit();Cipher cipher = Cipher.getInstance(RSA_KEY);// 明文String plainText = ...
# sysname client001 # ssh client first-time enable # ssh client cipher aes128_ctr aes256_ctr aes192_ctr aes128_gcm aes256_gcm ssh client hmac sha2_256 sha2_512 ssh client key-exchange dh_group_exchange_sha256 dh_group16_sha512 ssh client publickey rsa_sha2_256 rsa_sha2_512 # ret...