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@@ -0,0 +1,91 @@
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+package com.jpsoft.employment.modules.common.utils;
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+
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+import com.sun.istack.NotNull;
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+import org.bouncycastle.jce.provider.BouncyCastleProvider;
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+
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+import javax.crypto.Cipher;
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+import javax.crypto.spec.IvParameterSpec;
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+import javax.crypto.spec.SecretKeySpec;
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+import java.io.UnsupportedEncodingException;
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+import java.security.Security;
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+import org.apache.commons.codec.binary.Base64;
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+import org.apache.commons.lang.StringUtils;
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+import org.bouncycastle.jce.provider.BouncyCastleProvider;
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+import javax.crypto.BadPaddingException;
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+import javax.crypto.Cipher;
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+import javax.crypto.IllegalBlockSizeException;
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+import javax.crypto.NoSuchPaddingException;
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+import java.security.*;
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+import java.security.spec.InvalidParameterSpecException;
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+import java.util.Arrays;
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+
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+public class AESDATAUtil {
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+ /**
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+ * 解密
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+ *
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+ * @param content 目标密文
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+ * @param key 秘钥
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+ * @param iv 偏移量
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+ * @return
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+ */
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+ public static String decrypt(@NotNull String content, @NotNull String key, @NotNull String iv) {
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+ String result = "";
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+ // 被加密的数据
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+ byte[] dataByte = Base64.decodeBase64(content);
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+ // 加密秘钥
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+ byte[] keyByte = Base64.decodeBase64(key);
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+ // 偏移量
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+ byte[] ivByte = Base64.decodeBase64(iv);
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+ try {
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+ // 如果密钥不足16位,那么就补足. 这个if 中的内容很重要
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+ int base = 16;
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+ if (keyByte.length % base != 0) {
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+ int groups = keyByte.length / base
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+ + (keyByte.length % base != 0 ? 1 : 0);
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+ byte[] temp = new byte[groups * base];
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+ Arrays.fill(temp, (byte) 0);
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+ System.arraycopy(keyByte, 0, temp, 0, keyByte.length);
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+ keyByte = temp;
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+ }
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+ if (ivByte.length % base != 0) {
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+ int groups = ivByte.length / base
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+ + (ivByte.length % base != 0 ? 1 : 0);
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+ byte[] temp = new byte[groups * base];
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+ Arrays.fill(temp, (byte) 0);
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+ System.arraycopy(ivByte, 0, temp, 0, ivByte.length);
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+ ivByte = temp;
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+ }
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+ // 初始化
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+ Security.addProvider(new BouncyCastleProvider());
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+ Cipher cipher = Cipher.getInstance("AES/CBC/PKCS7Padding", "BC");
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+ SecretKeySpec spec = new SecretKeySpec(keyByte, "AES");
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+ AlgorithmParameters parameters = AlgorithmParameters
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+ .getInstance("AES");
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+ parameters.init(new IvParameterSpec(ivByte));
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+ cipher.init(Cipher.DECRYPT_MODE, spec, parameters);// 初始化
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+ byte[] resultByte = cipher.doFinal(dataByte);
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+ if (null != resultByte && resultByte.length > 0) {
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+ result = new String(resultByte, "UTF-8");
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+ }
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+ } catch (NoSuchAlgorithmException e) {
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+ e.printStackTrace();
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+ } catch (NoSuchPaddingException e) {
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+ e.printStackTrace();
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+ } catch (InvalidParameterSpecException e) {
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+ e.printStackTrace();
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+ } catch (IllegalBlockSizeException e) {
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+ e.printStackTrace();
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+ } catch (BadPaddingException e) {
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+ e.printStackTrace();
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+ } catch (UnsupportedEncodingException e) {
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+ e.printStackTrace();
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+ } catch (InvalidKeyException e) {
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+ e.printStackTrace();
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+ } catch (InvalidAlgorithmParameterException e) {
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+ e.printStackTrace();
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+ } catch (NoSuchProviderException e) {
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+ e.printStackTrace();
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+ }
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+ return result;
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+ }
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+}
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