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app/src/main/java/com/base/easyfilemanager/helps/AESTextView.kt

+package com.base.easyfilemanager.helps
+
+import android.content.Context
+import android.util.AttributeSet
+import com.noober.background.view.BLTextView
+import com.test.fast.cleanerjunk.helps.KotlinExt.decode
+
+
+class AESTextView @JvmOverloads constructor(
+    context: Context, attrs: AttributeSet? = null
+) : BLTextView(context, attrs) {
+
+    override fun setText(text: CharSequence?, type: BufferType?) {
+        super.setText(text?.toString()?.run { decode().takeIf { it != this } } ?: text, type)
+    }
+}
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app/src/main/java/com/base/easyfilemanager/helps/ads/AESHelper.kt

+package com.base.easyfilemanager.helps.ads
+
+import android.util.Base64
+import java.security.SecureRandom
+import javax.crypto.Cipher
+import javax.crypto.spec.GCMParameterSpec
+import javax.crypto.spec.SecretKeySpec
+
+object AESHelper {
+
+    private const val aesKey = "bt8n2r8wdqk30wcu"
+
+    private val cipher by lazy {
+        Cipher.getInstance("AES/GCM/NoPadding")
+    }
+
+    fun encrypt(content: String): String {
+        try {
+            val iv = ByteArray(12).apply {
+                SecureRandom().nextBytes(this)
+            }
+            val contentBytes = content.toByteArray(Charsets.UTF_8)
+            val params = GCMParameterSpec(128, iv)
+            cipher.init(
+                Cipher.ENCRYPT_MODE,
+                secretKey, params
+            )
+            val encryptData = cipher.doFinal(contentBytes)
+            assert(encryptData.size == contentBytes.size + 16)
+            val message = ByteArray(12 + contentBytes.size + 16)
+            System.arraycopy(iv, 0, message, 0, 12)
+            System.arraycopy(encryptData, 0, message, 12, encryptData.size)
+            return String(Base64.encode(message, Base64.NO_WRAP), Charsets.UTF_8)
+        } catch (_: Exception) {
+        }
+        return content
+    }
+
+    @Synchronized
+    fun decrypt(content: String): String {
+        try {
+            val con = content.replace(" ".toRegex(), "+")
+            val contentByte = Base64.decode(con, Base64.NO_WRAP)
+            require(contentByte.size >= 12 + 16)
+            val params = GCMParameterSpec(128, contentByte, 0, 12)
+            cipher.init(
+                Cipher.DECRYPT_MODE,
+                secretKey, params
+            )
+            val decryptData = cipher.doFinal(contentByte, 12, contentByte.size - 12)
+            return String(decryptData, Charsets.UTF_8)
+        } catch (_: Exception) {
+        }
+        return content
+    }
+
+    private val secretKey by lazy {
+        SecretKeySpec(aesKey.toByteArray(), "AES")
+    }
+}
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