diff --git a/benchmarks/pr/664.json b/benchmarks/pr/664.json
index 8b94fac..0aa4441 100644
--- a/benchmarks/pr/664.json
+++ b/benchmarks/pr/664.json
@@ -1,5 +1,5 @@
 {
-  "lastUpdate": 1750874560391,
+  "lastUpdate": 1750875048367,
   "repoUrl": "https://github.com/rosenpass/rosenpass",
   "entries": {
     "Protocol Benchmarks": [
@@ -14050,6 +14050,884 @@
             "run time": "below 1ms"
           }
         ]
+      },
+      {
+        "commit": {
+          "author": {
+            "name": "rosenpass",
+            "username": "rosenpass"
+          },
+          "committer": {
+            "name": "rosenpass",
+            "username": "rosenpass"
+          },
+          "id": "b1a7d942954ce6a41decc5a9f93c95cffafde801",
+          "message": "Specify WireGuard OSK as a protocol extension & allow for custom OSK domain separators",
+          "timestamp": "2025-06-24T12:50:57Z",
+          "url": "https://github.com/rosenpass/rosenpass/pull/664/commits/b1a7d942954ce6a41decc5a9f93c95cffafde801"
+        },
+        "date": 1750875047205,
+        "bigger_is_better": false,
+        "benches": [
+          {
+            "name": "RHI3",
+            "unit": "ns/iter",
+            "value": "14365",
+            "range": "± 1629",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "handle_initiation",
+            "unit": "ns/iter",
+            "value": "5092379",
+            "range": "± 49874",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "medium"
+          },
+          {
+            "name": "IHI8",
+            "unit": "ns/iter",
+            "value": "14324",
+            "range": "± 1441",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "IHI3",
+            "unit": "ns/iter",
+            "value": "79615",
+            "range": "± 3500",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "ICI3",
+            "unit": "ns/iter",
+            "value": "14277",
+            "range": "± 861",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "RHI5",
+            "unit": "ns/iter",
+            "value": "86901865",
+            "range": "± 661039",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "long"
+          },
+          {
+            "name": "ICR7",
+            "unit": "ns/iter",
+            "value": "12749",
+            "range": "± 955",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "IHI7",
+            "unit": "ns/iter",
+            "value": "1139467",
+            "range": "± 5076",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "medium"
+          },
+          {
+            "name": "IHI6",
+            "unit": "ns/iter",
+            "value": "1139951",
+            "range": "± 4862",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "medium"
+          },
+          {
+            "name": "IHI1",
+            "unit": "ns/iter",
+            "value": "1128335",
+            "range": "± 11477",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "medium"
+          },
+          {
+            "name": "RHR6",
+            "unit": "ns/iter",
+            "value": "2266606",
+            "range": "± 14792",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "medium"
+          },
+          {
+            "name": "RHR7",
+            "unit": "ns/iter",
+            "value": "14639",
+            "range": "± 1830",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "RHR1",
+            "unit": "ns/iter",
+            "value": "727",
+            "range": "± 127",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1us"
+          },
+          {
+            "name": "handle_resp_conf",
+            "unit": "ns/iter",
+            "value": "1129788",
+            "range": "± 3383",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "medium"
+          },
+          {
+            "name": "IHI2",
+            "unit": "ns/iter",
+            "value": "344",
+            "range": "± 1104",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1us"
+          },
+          {
+            "name": "IHR1",
+            "unit": "ns/iter",
+            "value": "1968951",
+            "range": "± 842155",
+            "protocol version": "V02",
+            "sample size": "200",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "medium"
+          },
+          {
+            "name": "handle_init_hello",
+            "unit": "ns/iter",
+            "value": "92251878",
+            "range": "± 898636",
+            "protocol version": "V02",
+            "sample size": "200",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "long"
+          },
+          {
+            "name": "IHR4",
+            "unit": "ns/iter",
+            "value": "18340",
+            "range": "± 2588",
+            "protocol version": "V02",
+            "sample size": "200",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "RHI4",
+            "unit": "ns/iter",
+            "value": "123391",
+            "range": "± 3410",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "RHI7",
+            "unit": "ns/iter",
+            "value": "17408",
+            "range": "± 1797",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "ICI4",
+            "unit": "ns/iter",
+            "value": "14287",
+            "range": "± 134",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "ICR3",
+            "unit": "ns/iter",
+            "value": "13970",
+            "range": "± 223",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "ICI7",
+            "unit": "ns/iter",
+            "value": "13464",
+            "range": "± 921",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "RHR3",
+            "unit": "ns/iter",
+            "value": "14234",
+            "range": "± 1341",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "ICR2",
+            "unit": "ns/iter",
+            "value": "16189",
+            "range": "± 15768",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "IHI5",
+            "unit": "ns/iter",
+            "value": "1568361",
+            "range": "± 33294",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "medium"
+          },
+          {
+            "name": "IHI4",
+            "unit": "ns/iter",
+            "value": "16075",
+            "range": "± 1724",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "IHR6",
+            "unit": "ns/iter",
+            "value": "14883",
+            "range": "± 3080",
+            "protocol version": "V02",
+            "sample size": "200",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "ICR4",
+            "unit": "ns/iter",
+            "value": "14268",
+            "range": "± 2232",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "IHR7",
+            "unit": "ns/iter",
+            "value": "1135982",
+            "range": "± 3535",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "medium"
+          },
+          {
+            "name": "IHR8",
+            "unit": "ns/iter",
+            "value": "14239",
+            "range": "± 822",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "RHR4",
+            "unit": "ns/iter",
+            "value": "125667",
+            "range": "± 3502",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "ICR1",
+            "unit": "ns/iter",
+            "value": "1980316",
+            "range": "± 838334",
+            "protocol version": "V02",
+            "sample size": "200",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "medium"
+          },
+          {
+            "name": "ICR6",
+            "unit": "ns/iter",
+            "value": "51",
+            "range": "± 8",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1us"
+          },
+          {
+            "name": "handle_resp_hello",
+            "unit": "ns/iter",
+            "value": "87108890",
+            "range": "± 661358",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "long"
+          },
+          {
+            "name": "handle_init_conf",
+            "unit": "ns/iter",
+            "value": "2010517",
+            "range": "± 808933",
+            "protocol version": "V02",
+            "sample size": "200",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "medium"
+          },
+          {
+            "name": "RHI6",
+            "unit": "ns/iter",
+            "value": "7218",
+            "range": "± 92",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "IHR5",
+            "unit": "ns/iter",
+            "value": "87679299",
+            "range": "± 872319",
+            "protocol version": "V02",
+            "sample size": "200",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "long"
+          },
+          {
+            "name": "RHR5",
+            "unit": "ns/iter",
+            "value": "1563373",
+            "range": "± 23837",
+            "protocol version": "V02",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "medium"
+          },
+          {
+            "name": "IHR7",
+            "unit": "ns/iter",
+            "value": "2820259",
+            "range": "± 7473",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "medium"
+          },
+          {
+            "name": "RHR1",
+            "unit": "ns/iter",
+            "value": "670",
+            "range": "± 145",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1us"
+          },
+          {
+            "name": "handle_resp_hello",
+            "unit": "ns/iter",
+            "value": "88744239",
+            "range": "± 385478",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "long"
+          },
+          {
+            "name": "RHI6",
+            "unit": "ns/iter",
+            "value": "8935",
+            "range": "± 807",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "ICR7",
+            "unit": "ns/iter",
+            "value": "14196",
+            "range": "± 1741",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "ICI7",
+            "unit": "ns/iter",
+            "value": "15431",
+            "range": "± 2253",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "IHR4",
+            "unit": "ns/iter",
+            "value": "20518",
+            "range": "± 1769",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "IHR8",
+            "unit": "ns/iter",
+            "value": "16129",
+            "range": "± 2312",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "handle_init_hello",
+            "unit": "ns/iter",
+            "value": "103226980",
+            "range": "± 170871",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "long"
+          },
+          {
+            "name": "IHR5",
+            "unit": "ns/iter",
+            "value": "88491498",
+            "range": "± 167928",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "long"
+          },
+          {
+            "name": "IHI4",
+            "unit": "ns/iter",
+            "value": "20972",
+            "range": "± 3917",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "RHR3",
+            "unit": "ns/iter",
+            "value": "15876",
+            "range": "± 1054",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "RHR6",
+            "unit": "ns/iter",
+            "value": "5640088",
+            "range": "± 34801",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "medium"
+          },
+          {
+            "name": "RHI3",
+            "unit": "ns/iter",
+            "value": "16198",
+            "range": "± 1722",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "RHR7",
+            "unit": "ns/iter",
+            "value": "16107",
+            "range": "± 1101",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "IHI1",
+            "unit": "ns/iter",
+            "value": "2810630",
+            "range": "± 13925",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "medium"
+          },
+          {
+            "name": "ICR4",
+            "unit": "ns/iter",
+            "value": "16017",
+            "range": "± 2267",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "ICI4",
+            "unit": "ns/iter",
+            "value": "16049",
+            "range": "± 1150",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "handle_initiation",
+            "unit": "ns/iter",
+            "value": "11839090",
+            "range": "± 94291",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "medium"
+          },
+          {
+            "name": "ICI3",
+            "unit": "ns/iter",
+            "value": "16117",
+            "range": "± 1646",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "IHI6",
+            "unit": "ns/iter",
+            "value": "2828150",
+            "range": "± 25486",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "medium"
+          },
+          {
+            "name": "ICR1",
+            "unit": "ns/iter",
+            "value": "2828521",
+            "range": "± 27483",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "medium"
+          },
+          {
+            "name": "ICR2",
+            "unit": "ns/iter",
+            "value": "18300",
+            "range": "± 16900",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "IHI5",
+            "unit": "ns/iter",
+            "value": "3252078",
+            "range": "± 63332",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "medium"
+          },
+          {
+            "name": "RHI4",
+            "unit": "ns/iter",
+            "value": "133263",
+            "range": "± 5012",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "IHR1",
+            "unit": "ns/iter",
+            "value": "2809629",
+            "range": "± 10912",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "medium"
+          },
+          {
+            "name": "RHI5",
+            "unit": "ns/iter",
+            "value": "88517415",
+            "range": "± 384745",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "long"
+          },
+          {
+            "name": "RHI7",
+            "unit": "ns/iter",
+            "value": "18718",
+            "range": "± 1110",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "handle_init_conf",
+            "unit": "ns/iter",
+            "value": "2895382",
+            "range": "± 39276",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "medium"
+          },
+          {
+            "name": "RHR5",
+            "unit": "ns/iter",
+            "value": "3241963",
+            "range": "± 27633",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "medium"
+          },
+          {
+            "name": "IHI2",
+            "unit": "ns/iter",
+            "value": "239",
+            "range": "± 90",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1us"
+          },
+          {
+            "name": "IHI3",
+            "unit": "ns/iter",
+            "value": "82233",
+            "range": "± 3315",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "IHR6",
+            "unit": "ns/iter",
+            "value": "19784",
+            "range": "± 1489",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "ICR3",
+            "unit": "ns/iter",
+            "value": "15752",
+            "range": "± 73",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "handle_resp_conf",
+            "unit": "ns/iter",
+            "value": "2815733",
+            "range": "± 12251",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "medium"
+          },
+          {
+            "name": "IHI8",
+            "unit": "ns/iter",
+            "value": "16059",
+            "range": "± 1742",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "RHR4",
+            "unit": "ns/iter",
+            "value": "132494",
+            "range": "± 3124",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1ms"
+          },
+          {
+            "name": "ICR6",
+            "unit": "ns/iter",
+            "value": "56",
+            "range": "± 19",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "below 1us"
+          },
+          {
+            "name": "IHI7",
+            "unit": "ns/iter",
+            "value": "2824068",
+            "range": "± 24378",
+            "protocol version": "V03",
+            "sample size": "100",
+            "operating system": "linux",
+            "architecture": "x86",
+            "run time": "medium"
+          }
+        ]
       }
     ],
     "Crypto Primitives Benchmarks": [