diff --git a/app/src/main/java/io/legado/app/help/crypto/AsymmetricCrypto.kt b/app/src/main/java/io/legado/app/help/crypto/AsymmetricCrypto.kt
index 2bbd059ba..7da81dc49 100644
--- a/app/src/main/java/io/legado/app/help/crypto/AsymmetricCrypto.kt
+++ b/app/src/main/java/io/legado/app/help/crypto/AsymmetricCrypto.kt
@@ -32,7 +32,7 @@ class AsymmetricCrypto(algorithm: String) : HutoolAsymmetricCrypto(algorithm) {
 
     @JvmOverloads
     fun decrypt(data: Any, usePublicKey: Boolean? = true): ByteArray {
-        return {
+        return when {
             data is ByteArray -> decrypt(data, getKeyType(usePublicKey))
             data is String -> decrypt(data, getKeyType(usePublicKey))
             data is InputStream -> decrypt(data, getKeyType(usePublicKey))
@@ -42,7 +42,7 @@ class AsymmetricCrypto(algorithm: String) : HutoolAsymmetricCrypto(algorithm) {
 
     @JvmOverloads
     fun decryptStr(data: Any, usePublicKey: Boolean? = true): String {
-        return {
+        return when {
             data is ByteArray -> decryptStr(data, getKeyType(usePublicKey))
             data is String -> decryptStr(data, getKeyType(usePublicKey))
             data is InputStream -> decryptStr(data, getKeyType(usePublicKey))
@@ -52,7 +52,7 @@ class AsymmetricCrypto(algorithm: String) : HutoolAsymmetricCrypto(algorithm) {
 
     @JvmOverloads
     fun encrypt(data: Any, usePublicKey: Boolean? = true): ByteArray {
-        return {
+        return when {
             data is ByteArray -> encrypt(data, getKeyType(usePublicKey))
             data is String -> encrypt(data, getKeyType(usePublicKey))
             data is InputStream -> encrypt(data, getKeyType(usePublicKey))
@@ -62,7 +62,7 @@ class AsymmetricCrypto(algorithm: String) : HutoolAsymmetricCrypto(algorithm) {
 
     @JvmOverloads
     fun encryptHex(data: Any, usePublicKey: Boolean? = true): String {
-        return {
+        return when {
             data is ByteArray -> encryptHex(data, getKeyType(usePublicKey))
             data is String -> encryptHex(data, getKeyType(usePublicKey))
             data is InputStream -> encryptHex(data, getKeyType(usePublicKey))
@@ -72,7 +72,7 @@ class AsymmetricCrypto(algorithm: String) : HutoolAsymmetricCrypto(algorithm) {
 
     @JvmOverloads
     fun encryptBase64(data: Any, usePublicKey: Boolean? = true): String {
-        return {
+        return when {
             data is ByteArray -> encryptBase64(data, getKeyType(usePublicKey))
             data is String -> encryptBase64(data, getKeyType(usePublicKey))
             data is InputStream -> encryptBase64(data, getKeyType(usePublicKey))