我加密和使用此代码字符串加密和解密的Android密钥比较
public class Encryption {
private static String charsetName = "UTF8";
private static String algorithm = "DES";
private static int base64Mode = Base64.DEFAULT;
public String getCharsetName() {
return charsetName;
}
public void setCharsetName(String charsetName) {
this.charsetName = charsetName;
}
public String getAlgorithm() {
return algorithm;
}
public void setAlgorithm(String algorithm) {
this.algorithm = algorithm;
}
public int getBase64Mode() {
return base64Mode;
}
public void setBase64Mode(int base64Mode) {
this.base64Mode = base64Mode;
}
public static String encrypt(String key, String data) {
if (key == null || data == null)
return null;
try {
DESKeySpec desKeySpec = new DESKeySpec(key.getBytes(charsetName));
SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance(algorithm);
SecretKey secretKey = secretKeyFactory.generateSecret(desKeySpec);
byte[] dataBytes = data.getBytes(charsetName);
Cipher cipher = Cipher.getInstance(algorithm);
cipher.init(Cipher.ENCRYPT_MODE, secretKey);
return Base64.encodeToString(cipher.doFinal(dataBytes), base64Mode);
} catch (Exception e) {
return null;
}
}
public static String decrypt(String key, String data) {
if (key == null || data == null)
return null;
try {
byte[] dataBytes = Base64.decode(data, base64Mode);
DESKeySpec desKeySpec = new DESKeySpec(key.getBytes(charsetName));
SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance(algorithm);
SecretKey secretKey = secretKeyFactory.generateSecret(desKeySpec);
Cipher cipher = Cipher.getInstance(algorithm);
cipher.init(Cipher.DECRYPT_MODE, secretKey);
byte[] dataBytesDecrypted = (cipher.doFinal(dataBytes));
return new String(dataBytesDecrypted);
} catch (Exception e) {
return null;
}
}
}
我想匹配的关键是我放置加密解密&文本,如果双方之前解密钥匙匹配解密文中另有提示我这里的wrongkey就是我试图做
string a="sfdsfsjbgdfkbgdfkjbgk";//encrypted text just for assuming
decrypted=Encryption.decrypt(key, a.trim());
encrypted=Encryption.encrypt(key, decrypted.trim());
if(a.contentEquals(encrypted.trim())){
//show the decrypted text
}
else
{
//Show the wrong key
}
这是如何我试图做的,但是当我把正确的密钥else语句执行 和应用程序停止对if语句 任何人都可以指出我在这里做错了什么。
您是否尝试过对同一个密钥进行加密和解密,并返回相同的值? – Aiapaec
是的,如果我尝试在else语句中显示,它会返回相同的值。 –
@El_Mochiq有什么想法? –