diff --git a/poseidon2/sponge.nim b/poseidon2/sponge.nim
index 274f4b2..7da8851 100644
--- a/poseidon2/sponge.nim
+++ b/poseidon2/sponge.nim
@@ -65,3 +65,9 @@ func digest*(_: type Sponge, elements: openArray[F], rate: static int): F =
   for element in elements:
     sponge.update(element)
   return sponge.finish()
+
+func digest*(_: type Sponge, bytes: openArray[byte], rate: static int): F =
+  var sponge = Sponge.init(rate)
+  for element in bytes.elements(F):
+    sponge.update(element)
+  return sponge.finish()
diff --git a/tests/poseidon2/testSponge.nim b/tests/poseidon2/testSponge.nim
index 266992a..37e58a6 100644
--- a/tests/poseidon2/testSponge.nim
+++ b/tests/poseidon2/testSponge.nim
@@ -1,6 +1,8 @@
 import std/unittest
+import std/sequtils
 
 import constantine/math/io/io_fields
+import constantine/math/arithmetic
 
 import poseidon2/types
 import poseidon2
@@ -48,3 +50,9 @@ suite "sponge":
         xs.add( toF(i) )
       let h = Sponge.digest(xs, rate = 2)
       check toDecimal(h) == expectedSpongeResultsRate2[n]
+
+  test "sponge with byte array as input":
+    let bytes = toSeq 1'u8..80'u8
+    let elements = toSeq bytes.elements(F)
+    let expected = Sponge.digest(elements, rate = 2)
+    check bool(Sponge.digest(bytes, rate = 2) == expected)