diff --git a/src/main/java/org/cryptomator/windows/keychain/ByteArrayJsonAdapter.java b/src/main/java/org/cryptomator/windows/keychain/ByteArrayJsonAdapter.java
deleted file mode 100644
index 6444373..0000000
--- a/src/main/java/org/cryptomator/windows/keychain/ByteArrayJsonAdapter.java
+++ /dev/null
@@ -1,40 +0,0 @@
-package org.cryptomator.windows.keychain;
-
-import com.fasterxml.jackson.core.JacksonException;
-import com.fasterxml.jackson.core.JsonGenerator;
-import com.fasterxml.jackson.core.JsonParser;
-import com.fasterxml.jackson.databind.DeserializationContext;
-import com.fasterxml.jackson.databind.SerializerProvider;
-import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
-import com.fasterxml.jackson.databind.ser.std.StdSerializer;
-
-import java.io.IOException;
-import java.util.Base64;
-
-class ByteArrayJsonAdapter {
-	static class Serializer extends StdSerializer<byte[]> {
-
-		public Serializer() {
-			super((Class<byte[]>) null);
-		}
-
-		@Override
-		public void serialize(byte[] value, JsonGenerator gen, SerializerProvider provider) throws IOException {
-			gen.writeString(Base64.getEncoder().encodeToString(value));
-		}
-	}
-
-	static class Deserializer extends StdDeserializer<byte[]> {
-
-		public Deserializer() {
-			super(byte[].class);
-		}
-
-		@Override
-		public byte[] deserialize(JsonParser p, DeserializationContext ctxt) throws IOException, JacksonException {
-			String base64 = p.getValueAsString();
-			return Base64.getDecoder().decode(base64);
-		}
-	}
-
-}
diff --git a/src/main/java/org/cryptomator/windows/keychain/KeychainEntry.java b/src/main/java/org/cryptomator/windows/keychain/KeychainEntry.java
index 0e00f49..fd295f1 100644
--- a/src/main/java/org/cryptomator/windows/keychain/KeychainEntry.java
+++ b/src/main/java/org/cryptomator/windows/keychain/KeychainEntry.java
@@ -2,15 +2,6 @@
 
 
 import com.fasterxml.jackson.annotation.JsonProperty;
-import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
-import com.fasterxml.jackson.databind.annotation.JsonSerialize;
 
-record KeychainEntry(@JsonProperty("ciphertext") //
-					 @JsonSerialize(using = ByteArrayJsonAdapter.Serializer.class) //
-					 @JsonDeserialize(using = ByteArrayJsonAdapter.Deserializer.class) //
-					 byte[] ciphertext,
-					 @JsonProperty("salt") //
-					 @JsonSerialize(using = ByteArrayJsonAdapter.Serializer.class) //
-					 @JsonDeserialize(using = ByteArrayJsonAdapter.Deserializer.class) //
-					 byte[] salt) {
+record KeychainEntry(@JsonProperty("ciphertext") byte[] ciphertext, @JsonProperty("salt") byte[] salt) {
 }
diff --git a/src/test/java/org/cryptomator/windows/keychain/WindowsProtectedKeychainAccessIntegrationTest.java b/src/test/java/org/cryptomator/windows/keychain/WindowsProtectedKeychainAccessIntegrationTest.java
index 69d1eb9..c948440 100644
--- a/src/test/java/org/cryptomator/windows/keychain/WindowsProtectedKeychainAccessIntegrationTest.java
+++ b/src/test/java/org/cryptomator/windows/keychain/WindowsProtectedKeychainAccessIntegrationTest.java
@@ -11,6 +11,7 @@
 import org.junit.jupiter.api.io.TempDir;
 
 import java.io.IOException;
+import java.net.URISyntaxException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 
@@ -58,6 +59,15 @@ public void testEmptyFileReturnsEmpty() throws KeychainAccessException, IOExcept
 
 			Assertions.assertTrue(result.isEmpty());
 		}
+
+		@Test
+		public void testLegacyKeychainFiles() throws URISyntaxException, KeychainAccessException {
+			var keychainPath = Path.of(this.getClass().getResource("keychain.v1.2.2.json").toURI());
+			var result = keychainAccess.loadKeychainEntries(keychainPath);
+
+			Assertions.assertTrue(result.isPresent());
+			Assertions.assertEquals(3, result.get().size());
+		}
 	}
 
 }
diff --git a/src/test/resources/org/cryptomator/windows/keychain/keychain.v1.2.2.json b/src/test/resources/org/cryptomator/windows/keychain/keychain.v1.2.2.json
new file mode 100644
index 0000000..4f12b0a
--- /dev/null
+++ b/src/test/resources/org/cryptomator/windows/keychain/keychain.v1.2.2.json
@@ -0,0 +1,14 @@
+{
+  "cryptomator-device-p12": {
+    "ciphertext": "AQAAANCMnd8BFdERjHoAwE/Cl+sBAAAAMKzd7acJg0ScvBUOCjUb3wAAAAACAAAAAAAQZgAAAAEAACAAAABS6cSKuWqEOp+1HHcsSF0bSzQRRbotDIZPQIuMvbSdowAAAAAOgAAAAAIAACAAAABatZ2hp39vFTysmXRSO1rkk9vLx2S6rnRq6RIGkXlCnzAAAAAgTeOMtOKhnMzIjSwJEFE22UaB3sPGH6UxQ+EWMuZ9WPGHmOp8/WzTzFLCwbiIh9ZAAAAAf7DQSu40eCLUDKQzwFNJrBJsEWX2pK2GS2wOYFTlcMhSij7WkSHh9nAeZtRf14PyBpuLxCiBIayLJMpeK4HIXg==",
+    "salt": "Rwzfb0IHSqOXJw5MGRmCTw=="
+  },
+  "-JgknuFBfItX": {
+    "ciphertext": "AQAAANCMnd8BFdERjHoAwE/Cl+sBAAAAMKzd7acJg0ScvBUOCjUb3wAAAAACAAAAAAAQZgAAAAEAACAAAABnYHm42qCU6kq50NV16IqJbrwrRwagpiYgopjK8xpyVAAAAAAOgAAAAAIAACAAAAC6XB/vmPRR7tK5sTOyY6DFgTXv4/ptTzGsKwJEsn1I8xAAAADUlPA6Qet/WSCbdK4WShMsQAAAAOVsW/9E/YNwHLl/qyzffkp2YR7UKeTcM3EkLoyI9Q2RJjmdidJc4wAet9zlp4qUPST+ukTxXAvMW/+RNxEAeZM=",
+    "salt": "CqEUWMVSQtqsDNhKeNCZHg=="
+  },
+  "vkEAWUv_NmbN": {
+    "ciphertext": "AQAAANCMnd8BFdERjHoAwE/Cl+sBAAAAcLFOdGbRSEiT1nQ2ILvP/gAAAAACAAAAAAAQZgAAAAEAACAAAABYjK3wVUE/is3SHpdzLRaijVbLw6UYMSBizyiDDWNrqAAAAAAOgAAAAAIAACAAAAALkAoBV3/RwpSXwkTyDgOKiR7+wMnXq099WW4tt873NRAAAACH2Ki+R4fSi+569Y0RpoS0QAAAAEXbbfM0mUuIgajCfO7yfH1ysWdRUWfZYnfqDjeR5Up/FKqLbPkgZr+0fgb/sZEw+HyQ781A7+fXHFqB3hQoDV0=",
+    "salt": "evllr3H5SHyJN/1SciqlVQ=="
+  }
+}
\ No newline at end of file