我正在使用低于代码加密和解密密码。
public static String encrypt(String data, Key key) throws Exception {
Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.ENCRYPT_MODE, key);
byte[] encryptedBytes = cipher.doFinal(data.getBytes());
byte[] base64Bytes = Base64.encodeBase64(encryptedBytes);
String base64EncodedString = new String(base64Bytes);
return base64EncodedString;
}
public static String decrypt(String encrypted, Key key) throws Exception {
Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.DECRYPT_MODE, key);
byte[] decoded = Base64.decodeBase64(encrypted.getBytes());
byte[] decrypted = cipher.doFinal(decoded);
return new String(decrypted);
}
加密工作正常。例外情况是抛出解密方法的 doFinal 方法。
例外:
[4/4/14 12:36:59:522 CDT] 00000024 SystemErr R引起: javax.crypto.BadPaddingException:不是PKCS#1块类型2或零填充 [4/4/14 12:36:59:523 CDT] 00000024 SystemErr R at com.ibm.crypto.provider.RSA.engineDoFinal(未知来源)[4/4/14 12:36:59:523 CDT] 00000024 SystemErr R at javax.crypto.Cipher.doFinal(未知来源)[4/4/14 12:36:59:523 CDT] 00000024 SystemErr R at com.moneygram.webpoe.util.SecurityProvider.decrypt(SecurityProvider.java:171) [4/4/14 12:36:59:524 CDT] 00000024 SystemErr R at com.moneygram.webpoe.util.SecurityProvider.decrypt(SecurityProvider.java:137)
如果有人对此有任何解决方案,请帮帮我吗?如果这是一个不完整的信息,我可以提供。我坚持这个!!!
答案 0 :(得分:0)
我不确定你的问题,但我确实知道你过分依赖默认值 - 关键字,字符集和加密模式+填充模式。
请尝试以下操作,并说明是否可以解决您的问题:
public static String encrypt(String data, RSAPublicKey key) throws Exception {
Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
cipher.init(Cipher.ENCRYPT_MODE, key);
byte[] encryptedBytes = cipher.doFinal(data.getBytes(StandardCharsets.UTF_8));
return Base64.encodeBase64String(encryptedBytes);
}
public static String decrypt(String encrypted, RSAPrivateKey key) throws Exception {
Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
cipher.init(Cipher.DECRYPT_MODE, key);
byte[] decoded = Base64.decodeBase64(encrypted);
byte[] decrypted = cipher.doFinal(decoded);
return new String(decrypted, StandardCharsets.UTF_8);
}