diff --git a/app/src/main/java/io/legado/app/utils/AsymmetricCryptoExtension.kt b/app/src/main/java/io/legado/app/utils/AsymmetricCryptoExtension.kt
deleted file mode 100644
index de7fb85cf..000000000
--- a/app/src/main/java/io/legado/app/utils/AsymmetricCryptoExtension.kt
+++ /dev/null
@@ -1,71 +0,0 @@
-package io.legado.app.utils
-
-import cn.hutool.crypto.asymmetric.*
-import cn.hutool.crypto.KeyUtil
-import java.io.InputStream
-
-fun AsymmetricCrypto.decrypt(data: Any, keyType: Int): ByteArray? {
-    return when {
-        data is ByteArray -> decrypt(data, KeyType(keyType))
-        data is String -> decrypt(data, KeyType(keyType))
-        data is InputStream -> decrypt(data, KeyType(keyType))
-        else -> null
-    }
-}
-
-fun AsymmetricCrypto.decryptStr(data: Any, keyType: Int): String? {
-    return when {
-        data is ByteArray -> decryptStr(data, KeyType(keyType))
-        data is String -> decryptStr(data, KeyType(keyType))
-        data is InputStream -> decryptStr(data, KeyType(keyType))
-        else -> null
-    }
-}
-
-fun AsymmetricCrypto.encrypt(data: Any, keyType: Int): ByteArray? {
-    return when {
-        data is ByteArray -> encrypt(data, KeyType(keyType))
-        data is String -> encrypt(data, KeyType(keyType))
-        data is InputStream -> encrypt(data, KeyType(keyType))
-        else -> null
-    }
-}
-fun AsymmetricCrypto.encryptBase64(data: Any, keyType: Int): String? {
-    return when {
-        data is ByteArray -> encryptBase64(data, KeyType(keyType))
-        data is String -> encryptBase64(data, KeyType(keyType))
-        data is InputStream -> encryptBase64(data, KeyType(keyType))
-        else -> null
-    }
-}
-fun AsymmetricCrypto.encryptHex(data: Any, keyType: Int): String? {
-    return when {
-        data is ByteArray -> encryptHex(data, KeyType(keyType))
-        data is String -> encryptHex(data, KeyType(keyType))
-        data is InputStream -> encryptHex(data, KeyType(keyType))
-        else -> null
-    }
-}
-
-fun AsymmetricCrypto.setPrivateKey(privateKey: ByteArray): AsymmetricCrypto {
-    return setPrivateKey(KeyUtil.generatePrivateKey(this.algorithm, privateKey))
-}
-fun AsymmetricCrypto.setPrivateKey(privateKey: String): AsymmetricCrypto = setPrivateKey(privateKey.encodeToByteArray())
-
-fun AsymmetricCrypto.setPublicKey(publicKey: ByteArray): AsymmetricCrypto {
-    return setPublicKey(KeyUtil.generatePublicKey(this.algorithm, publicKey))
-}
-fun AsymmetricCrypto.setPublicKey(publicKey: String): AsymmetricCrypto = setPublicKey(publicKey.encodeToByteArray())
-
-fun Sign.setPrivateKey(privateKey: ByteArray): Sign {
-    return setPrivateKey(KeyUtil.generatePrivateKey(this.algorithm, privateKey))
-}
-
-fun Sign.setPrivateKey(privateKey: String): Sign = setPrivateKey(privateKey.encodeToByteArray())
-
-fun Sign.setPublicKey(publicKey: ByteArray): Sign {
-    return setPublicKey(KeyUtil.generatePublicKey(this.algorithm, publicKey))
-}
-
-fun Sign.setPublicKey(publicKey: String): Sign = setPublicKey(publicKey.encodeToByteArray())
-