新增 打包时简单加密

common/src/main/java/com/stardust/util/AdvancedEncryptionStandard.kt

@@ -0,0 +1,42 @@
+package com.stardust.util
+
+import javax.crypto.Cipher
+import javax.crypto.spec.IvParameterSpec
+import javax.crypto.spec.SecretKeySpec
+
+class AdvancedEncryptionStandard(private val key: ByteArray, private val initVector: String) {
+
+    /**
+     * Encrypts the given plain text
+     *
+     * @param plainText The plain text to encrypt
+     */
+    @Throws(Exception::class)
+    fun encrypt(plainText: ByteArray): ByteArray {
+        val secretKey = SecretKeySpec(key, ALGORITHM)
+        val cipher = Cipher.getInstance(FULL_ALGORITHM)
+        val ivParameterSpec = IvParameterSpec(initVector.toByteArray())
+        cipher.init(Cipher.ENCRYPT_MODE, secretKey, ivParameterSpec)
+        return cipher.doFinal(plainText)
+    }
+
+    /**
+     * Decrypts the given byte array
+     *
+     * @param cipherText The data to decrypt
+     */
+    @Throws(Exception::class)
+    fun decrypt(cipherText: ByteArray, start: Int = 0, end: Int = cipherText.size): ByteArray {
+        val secretKey = SecretKeySpec(key, ALGORITHM)
+        val ivParameterSpec = IvParameterSpec(initVector.toByteArray())
+        val cipher = Cipher.getInstance(FULL_ALGORITHM)
+        cipher.init(Cipher.DECRYPT_MODE, secretKey, ivParameterSpec)
+        return cipher.doFinal(cipherText, start, end)
+    }
+
+    companion object {
+
+        private const val ALGORITHM = "AES"
+        private const val FULL_ALGORITHM = "AES/CBC/PKCS5Padding"
+    }
+}