SecretKeySpecpublic SecretKeySpec(byte[] key, String algorithm)从给定的字节数组构造一个密钥。 此构造函数不检查给定的字节是否确实指定了指定算法的密钥。 例如,如果算法是DES,则此构造函数不检查key是否为8字节长,并且也不检查弱键或半弱键。 为了执行这些检查,应该使用特定于算法的密钥规范类(在这种情况...
importjavax.crypto.spec.SecretKeySpec;importjava.security.Key;importjavax.crypto.Cipher;importjava.util.Base64;publicclassSecretKeySpecExample{publicstaticvoidmain(String[]args)throwsException{Stringkey="mysecretkey";byte[]keyBytes=key.getBytes("UTF-8");SecretKeySpecsecretKeySpec=newSecretKeySpec(key...
importjavax.crypto.spec.SecretKeySpec;importjava.security.Key;publicclassMain{publicstaticvoidmain(String[]args){byte[]keyBytes={0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,0xEE,0xFF,0x00};Keykey=newSecretKeySpec(keyBytes,"AES");System.out.println(key.getAlg...
SecretKeySpec(byte[] key, int offset, int len,Stringalgorithm) Constructs a secret key from the given byte array, using the firstlenbytes ofkey, starting atoffsetinclusive. SecretKeySpec(byte[] key,Stringalgorithm) Constructs a secret key from the given byte array. ...
* SecretKeySpec和KeyGenerator支持AES,DES,DESede三种加密算法创建密匙 * KeyPairGenerator支持RSA加密算法创建密匙 (3)params :使用CBC模式时必须传入该参数,该项目使用IvParameterSpec创建iv 对象 2.3 加密或解密 byte[] b = cipher.doFinal(content);
每个SecretKey都有一个相关的算法名。例如，不能在需要AES密钥的上下文中使用带有算法"DES"的"DES"。
做完这件事。这是因为SecretKeySpec实现了SecretKey。对于3 DES键，这不是一个好主意，因为这意味着DES...
public static byte[] generateDESKey() throws Exception { KeyGenerator keyGenerator = KeyGenerator.getInstance("DES"); // must be equal to 56 keyGenerator.init(56); SecretKey secretKey = keyGenerator.generateKey(); byte[] encodedKey = secretKey.getEncoded(); ...
SecretKeySpec keySpec = new SecretKeySpec(md5Digest.digest(Encoding.UTF8.GetBytes(key)), KEY_AES); Cipher cipher = Cipher.getInstance(KEY_AES);// 创建密码器cipher.init(mode, keySpec);// 初始化byte[] result = cipher.doFinal(content);if(encrypt) ...
Mac mac = Mac.getInstance("HmacSHA1"); String secretKey ="sKey"; String content ="Hello"; byte[] secretKeyBArr = secretKey.getBytes(); byte[] contentBArr = content.getBytes(); SecretKeySpec secret_key = new SecretKeySpec(secretKeyBArr,"HmacSHA1"); byte[] secretKeySpecArr = secret_...