fix test for zero length random string

index.js

@@ -165,7 +165,7 @@ function encrypt_aes (text, pass, mode = encryption_mode_cbc_256) {
   const salt = crypto.randomBytes (mode.salt_size);
   // eslint-disable-next-line no-sync
   const key = crypto.pbkdf2Sync (
-    Buffer.from (pass, 'utf-8'),
+    Buffer.from (pass),
     salt,
     mode.iterations,
     mode.key_size,
@@ -203,7 +203,7 @@ function decrypt_aes (
     buf = buf.slice (mode.salt_size);
     // eslint-disable-next-line no-sync
     const key = crypto.pbkdf2Sync (
-      Buffer.from (pass, 'utf-8'),
+      Buffer.from (pass),
       salt,
       mode.iterations,
       mode.key_size,
@@ -216,7 +216,7 @@ function decrypt_aes (
       cipher.update (buf),
       cipher.final ()
     ])
-      .toString ('utf-8');
+      .toString ();
   }
   catch (e) {
     if (rethrow)

test/encryption.js

@@ -16,6 +16,29 @@ test ('decryption', (t) => {
   t.is (dec, 'foo');
 });
 
+test ('encryption 128', (t) => {
+  const enc = crypto.encrypt_aes (
+    'foo',
+    'bar',
+    crypto.encryption_mode_cbc_128,
+  );
+  t.is (typeof enc, 'string');
+});
+
+test ('decryption 128', (t) => {
+  const enc = crypto.encrypt_aes (
+    'foo',
+    'bar',
+    crypto.encryption_mode_cbc_128,
+  );
+  const dec = crypto.decrypt_aes (
+    enc,
+    'bar',
+    crypto.encryption_mode_cbc_128,
+  );
+  t.is (dec, 'foo');
+});
+
 test ('fail decryption', (t) => {
   const enc = crypto.encrypt_aes ('foo', 'bar');
   const dec = crypto.decrypt_aes (enc, 'baz');

test/index.js

@@ -23,7 +23,10 @@ test ('random_hex with default length', (t) => {
 });
 
 test ('random_hex should refuse lenght smaller 1', (t) => {
-  t.throws (() => (crypto.random_hex (0)));
+  const error = t.throws (
+    () => (crypto.random_hex (0))
+  );
+  t.is(error.message, 'invalid length');
 });
 
 test ('random_string', (t) => {
@@ -37,7 +40,10 @@ test ('random_string with default length', (t) => {
 });
 
 test ('random_string should refuse lenght smaller 1', (t) => {
-  t.throws (() => (crypto.random_string (0)));
+  const error = t.throws (
+    () => (crypto.random_string (0))
+  );
+  t.is(error.message, 'invalid length');
 });
 
 test ('hash_sha512', (t) => {