From 1a2b07f01ba4616fd9e894dddf474b56d020158c Mon Sep 17 00:00:00 2001
From: zhubaomin <zhubaomin>
Date: 星期一, 07 四月 2025 15:18:51 +0800
Subject: [PATCH] 整理版本

---
 pipIrr-platform/pipIrr-web/pipIrr-web-sell/src/main/java/com/dy/pipIrrSell/util/AesUtil.java |   51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 51 insertions(+), 0 deletions(-)

diff --git a/pipIrr-platform/pipIrr-web/pipIrr-web-sell/src/main/java/com/dy/pipIrrSell/util/AesUtil.java b/pipIrr-platform/pipIrr-web/pipIrr-web-sell/src/main/java/com/dy/pipIrrSell/util/AesUtil.java
new file mode 100644
index 0000000..0d70bd5
--- /dev/null
+++ b/pipIrr-platform/pipIrr-web/pipIrr-web-sell/src/main/java/com/dy/pipIrrSell/util/AesUtil.java
@@ -0,0 +1,51 @@
+package com.dy.pipIrrSell.util;
+
+import javax.crypto.Cipher;
+import javax.crypto.NoSuchPaddingException;
+import javax.crypto.spec.GCMParameterSpec;
+import javax.crypto.spec.SecretKeySpec;
+import java.io.IOException;
+import java.security.GeneralSecurityException;
+import java.security.InvalidAlgorithmParameterException;
+import java.security.InvalidKeyException;
+import java.security.NoSuchAlgorithmException;
+import java.util.Base64;
+
+/**
+ * @author ZhuBaoMin
+ * @date 2024-03-06 11:46
+ * @LastEditTime 2024-03-06 11:46
+ * @Description
+ */
+
+public class AesUtil {
+    static final int KEY_LENGTH_BYTE = 32;
+    static final int TAG_LENGTH_BIT = 128;
+
+    /**
+     * 瑙e瘑
+     * @param apiV3Key apiV3瀵嗛挜
+     * @param associatedData 闄勫姞鏁版嵁
+     * @param nonce 闅忔満涓�
+     * @param ciphertext 鏁版嵁瀵嗘枃
+     * @return 瑙e瘑鍚庡瓧绗︿覆
+     * @throws GeneralSecurityException
+     * @throws IOException
+     */
+    public static String decryptToString(byte[] apiV3Key, byte[] associatedData, byte[] nonce, String ciphertext) throws GeneralSecurityException, IOException {
+        try {
+            Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
+            SecretKeySpec key = new SecretKeySpec(apiV3Key, "AES");
+            GCMParameterSpec spec = new GCMParameterSpec(TAG_LENGTH_BIT, nonce);
+
+            cipher.init(Cipher.DECRYPT_MODE, key, spec);
+            cipher.updateAAD(associatedData);
+
+            return new String(cipher.doFinal(Base64.getDecoder().decode(ciphertext)), "utf-8");
+        } catch (NoSuchAlgorithmException | NoSuchPaddingException e) {
+            throw new IllegalStateException(e);
+        } catch (InvalidKeyException | InvalidAlgorithmParameterException e) {
+            throw new IllegalArgumentException(e);
+        }
+    }
+}
\ No newline at end of file

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