diff --git a/src/encrypt.ts b/src/encrypt.ts
index 6c6d5ea..097621e 100644
--- a/src/encrypt.ts
+++ b/src/encrypt.ts
@@ -6,7 +6,7 @@ import {
   arrayBufferToHex,
 } from "./misc";
 
-const DEFAULT_ITER = 10000;
+const DEFAULT_ITER = 20000;
 
 // base32.stringify(Buffer.from('Salted__'))
 export const MAGIC_ENCRYPTED_PREFIX_BASE32 = "KNQWY5DFMRPV";
diff --git a/tests/encrypt.test.ts b/tests/encrypt.test.ts
index 072e53b..0bdedb1 100644
--- a/tests/encrypt.test.ts
+++ b/tests/encrypt.test.ts
@@ -60,10 +60,10 @@ describe("Encryption tests", () => {
     );
 
     // two command returns same result:
-    // cat ./sometext.txt | openssl enc -p -aes-256-cbc -S 8302F586FAB491EC -pbkdf2 -iter 10000 -base64 -pass pass:somepassword
-    // openssl enc -p -aes-256-cbc -S 8302F586FAB491EC -pbkdf2 -iter 10000 -base64 -pass pass:somepassword -in ./sometext.txt
+    // cat ./sometext.txt | openssl enc -p -aes-256-cbc -S 8302F586FAB491EC -pbkdf2 -iter 20000 -base64 -pass pass:somepassword
+    // openssl enc -p -aes-256-cbc -S 8302F586FAB491EC -pbkdf2 -iter 20000 -base64 -pass pass:somepassword -in ./sometext.txt
     const opensslBase64Res =
-      "U2FsdGVkX1+DAvWG+rSR7MSa+yJav1zCE7SSXiBooqwI5Q+LMpIthpk/pXkLj+25";
+      "U2FsdGVkX1+DAvWG+rSR7BPXMnlvSSVGMdjsx7kE1CTH+28P+yAZRdDGgFWMGkMd";
     // we output base32, so we need some transformation
     const opensslBase32Res = base64ToBase32(opensslBase64Res);
 
@@ -89,6 +89,8 @@ describe("Encryption tests", () => {
       await fs.readFileSync(path.join(testFolder, testFileName + ".enc"))
     );
 
+    // openssl enc -p -aes-256-cbc -S 8302F586FAB491EC -pbkdf2 -iter 20000 -pass pass:somepassword -in mona_lisa/1374px-Mona_Lisa,_by_Leonardo_da_Vinci,_from_C2RMF_retouched.jpg -out mona_lisa/1374px-Mona_Lisa,_by_Leonardo_da_Vinci,_from_C2RMF_retouched.jpg.enc
+
     expect(Buffer.from(enc).equals(Buffer.from(opensslArrBuf))).to.be.true;
   });
 
diff --git a/tests/static_assets/mona_lisa/1374px-Mona_Lisa,_by_Leonardo_da_Vinci,_from_C2RMF_retouched.jpg.enc b/tests/static_assets/mona_lisa/1374px-Mona_Lisa,_by_Leonardo_da_Vinci,_from_C2RMF_retouched.jpg.enc
index a28a5b7..1728efa 100644
--- a/tests/static_assets/mona_lisa/1374px-Mona_Lisa,_by_Leonardo_da_Vinci,_from_C2RMF_retouched.jpg.enc
+++ b/tests/static_assets/mona_lisa/1374px-Mona_Lisa,_by_Leonardo_da_Vinci,_from_C2RMF_retouched.jpg.enc
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:cf67abd791f1e230bce57dd47150f262424247cbefb8be16efcd57d13955576a
+oid sha256:7687eaf60ed93f754b107dc86a437aa97fad7bedd40432171b08c22cded7b559
 size 1141568