diff --git a/modules/dap-sdk/crypto/include/wrapping_dap_sign.h b/modules/dap-sdk/crypto/include/wrapping_dap_sign.h
index 55fbaa5ab2529937d5aa4bbf96c188099bc134f1..2ba1a48f86784c891cdccba8c8b68ab54043fa7b 100644
--- a/modules/dap-sdk/crypto/include/wrapping_dap_sign.h
+++ b/modules/dap-sdk/crypto/include/wrapping_dap_sign.h
@@ -86,11 +86,13 @@ typedef struct PyDapSign{
 
 PyObject *wrapping_dap_sign_get_type(PyObject *self, void *closure);
 PyObject *wrapping_dap_sign_get_pkey(PyObject *self, void *closure);
+PyObject *wrapping_dap_sign_get_pkey_hash(PyObject *self, void *closure);
 PyObject *wrapping_dap_sign_get_size(PyObject *self, void *closure);
 
 static PyGetSetDef DapSignObjectGetsSetsDef[] = {
         {"type", (getter)wrapping_dap_sign_get_type, NULL, NULL, NULL},
         {"pkey", (getter)wrapping_dap_sign_get_pkey, NULL, NULL, NULL},
+        {"pkeyHash", (getter)wrapping_dap_sign_get_pkey_hash, NULL,NULL, NULL},
         {"size", (getter)wrapping_dap_sign_get_size, NULL, NULL, NULL},
         {NULL}
 };
diff --git a/modules/dap-sdk/crypto/src/wrapping_dap_sign.c b/modules/dap-sdk/crypto/src/wrapping_dap_sign.c
index 9ac7d27548fa4e9d389583ae84930b66e49eab85..be175709d7c1ca4674be570454ed08402a9c7ac9 100644
--- a/modules/dap-sdk/crypto/src/wrapping_dap_sign.c
+++ b/modules/dap-sdk/crypto/src/wrapping_dap_sign.c
@@ -18,6 +18,14 @@ PyObject *wrapping_dap_sign_get_pkey(PyObject *self, void *closure){
     obj_pkey->pkey = (dap_pkey_t*)((PyDapSignObject*)self)->sign->pkey_n_sign;
     return (PyObject*)obj_pkey;
 }
+PyObject *wrapping_dap_sign_get_pkey_hash(PyObject *self, void *closure){
+    (void)closure;
+    PyDapHashFastObject *obj_hash = PyObject_New(PyDapHashFastObject, &DapHashFastObject_DapHashFastObjectType);
+    PyObject_Dir((PyObject*)obj_hash);
+    obj_hash->hash_fast = DAP_NEW(dap_chain_hash_fast_t);
+    dap_sign_get_pkey_hash(((PyDapSignObject*)self)->sign, obj_hash->hash_fast);
+    return (PyObject*)obj_hash;
+}
 PyObject *wrapping_dap_sign_get_size(PyObject *self, void *closure){
     (void)closure;
     return Py_BuildValue("I", ((PyDapSignObject*)self)->sign->header.sign_size);