diff --git a/src/conversations/private_v1.nim b/src/conversations/private_v1.nim
index 7095f8e..de831a7 100644
--- a/src/conversations/private_v1.nim
+++ b/src/conversations/private_v1.nim
@@ -4,7 +4,6 @@ import ../utils
 
 import std/[sequtils, strutils]
 import std/algorithm
-import blake2
 import sugar
 
 type
@@ -27,7 +26,7 @@ proc derive_topic(participants: seq[PublicKey], discriminator: string): string =
   addrs.add(discriminator)
   let raw = addrs.join("|")
 
-  return "/convo/private/" & getBlake2b(raw, 18, "")
+  return "/convo/private/" & utils.hash_func(raw)
 
 
 
diff --git a/src/utils.nim b/src/utils.nim
index 1456452..4ac5555 100644
--- a/src/utils.nim
+++ b/src/utils.nim
@@ -12,7 +12,13 @@ proc generateSalt*(): uint64 =
     for i in 0 ..< 8:
         result = result or (uint64(rand(255)) shl (i * 8))
 
+proc hash_func*(s: string): string =
+    # This should be Blake2s but it does not exist so substituting with Blake2b
+    result = getBlake2b(s, 4, "")
+
 proc get_addr*(pubkey: SkPublicKey): string =
     # TODO: Needs Spec
-    result = getBlake2b(pubkey.toHexCompressed(), 4, "")
+    result = hash_func(pubkey.toHexCompressed())
+
+