diff --git a/sphinx-ffi/src/onion.rs b/sphinx-ffi/src/onion.rs
index 3104c59..a53a174 100644
--- a/sphinx-ffi/src/onion.rs
+++ b/sphinx-ffi/src/onion.rs
@@ -17,6 +17,13 @@ pub fn sign_ms(seed: String, time: String) -> Result<String> {
     Ok(hex::encode(sig))
 }
 
+pub fn pubkey_from_seed(seed: String, time: String) -> Result<String> {
+    let km = make_keys_manager(&seed, &time)?;
+    let secp_ctx = sphinx::Secp256k1::new();
+    let pubkey = PublicKey::from_secret_key(&secp_ctx, &km.get_node_secret_key());
+    Ok(hex::encode(pubkey.serialize()))
+}
+
 pub fn create_onion(seed: String, time: String, hops: String, payload: Vec<u8>) -> Result<Vec<u8>> {
     let km = make_keys_manager(&seed, &time)?;
     let hops = parse_hops(&hops)?;
diff --git a/sphinx-ffi/src/sphinxrs.swift b/sphinx-ffi/src/sphinxrs.swift
index 2418fa7..d17013d 100644
--- a/sphinx-ffi/src/sphinxrs.swift
+++ b/sphinx-ffi/src/sphinxrs.swift
@@ -942,6 +942,16 @@ public func `signMs`(`seed`: String, `time`: String) throws -> String {
     )
 }
 
+public func `pubkeyFromSeed`(`seed`: String, `time`: String) throws -> String {
+    return try  FfiConverterString.lift(
+        try rustCallWithError(FfiConverterTypeSphinxError.lift) {
+    uniffi_sphinxrs_fn_func_pubkey_from_seed(
+        FfiConverterString.lower(`seed`),
+        FfiConverterString.lower(`time`),$0)
+}
+    )
+}
+
 private enum InitializationResult {
     case ok
     case contractVersionMismatch
@@ -1014,6 +1024,9 @@ private var initializationResult: InitializationResult {
     if (uniffi_sphinxrs_checksum_func_sign_ms() != 65056) {
         return InitializationResult.apiChecksumMismatch
     }
+    if (uniffi_sphinxrs_checksum_func_pubkey_from_seed() != 40652) {
+        return InitializationResult.apiChecksumMismatch
+    }
 
     return InitializationResult.ok
 }
diff --git a/sphinx-ffi/src/sphinxrs.udl b/sphinx-ffi/src/sphinxrs.udl
index 9b052df..ecbb2e8 100644
--- a/sphinx-ffi/src/sphinxrs.udl
+++ b/sphinx-ffi/src/sphinxrs.udl
@@ -71,4 +71,6 @@ namespace sphinxrs {
   bytes peel_payment(string seed, string time, bytes payload, string preimage);
   [Throws=SphinxError]
   string sign_ms(string seed, string time);
+  [Throws=SphinxError]
+  string pubkey_from_seed(string seed, string time);
 };
\ No newline at end of file
diff --git a/sphinx-ffi/src/sphinxrsFFI.h b/sphinx-ffi/src/sphinxrsFFI.h
index 9e50eb7..b1c4807 100644
--- a/sphinx-ffi/src/sphinxrsFFI.h
+++ b/sphinx-ffi/src/sphinxrsFFI.h
@@ -101,6 +101,8 @@ RustBuffer uniffi_sphinxrs_fn_func_peel_payment(RustBuffer seed, RustBuffer time
 );
 RustBuffer uniffi_sphinxrs_fn_func_sign_ms(RustBuffer seed, RustBuffer time, RustCallStatus *_Nonnull out_status
 );
+RustBuffer uniffi_sphinxrs_fn_func_pubkey_from_seed(RustBuffer seed, RustBuffer time, RustCallStatus *_Nonnull out_status
+);
 RustBuffer ffi_sphinxrs_rustbuffer_alloc(int32_t size, RustCallStatus *_Nonnull out_status
 );
 RustBuffer ffi_sphinxrs_rustbuffer_from_bytes(ForeignBytes bytes, RustCallStatus *_Nonnull out_status
@@ -165,6 +167,9 @@ uint16_t uniffi_sphinxrs_checksum_func_peel_payment(void
 );
 uint16_t uniffi_sphinxrs_checksum_func_sign_ms(void
     
+);
+uint16_t uniffi_sphinxrs_checksum_func_pubkey_from_seed(void
+    
 );
 uint32_t ffi_sphinxrs_uniffi_contract_version(void