Debug PKCS #11 ECDSA signature and verification.

1 files changed, 17 insertions, 0 deletions

diff --git a/py11/__init__.py b/py11/__init__.py
index da0c946..204c897 100644
--- a/py11/__init__.py
+++ b/py11/__init__.py
@@ -98,6 +98,23 @@ class PKCS11 (object):
                               byref(public_handle), byref(private_handle))
     return public_handle.value, private_handle.value
 
+  def C_SignInit(self, session, mechanism_type, private_key):
+    mechanism = CK_MECHANISM(mechanism_type, None, 0)
+    self.so.C_SignInit(session, byref(mechanism), private_key)
+
+  def C_Sign(self, session, data):
+    n = CK_ULONG()
+    self.so.C_Sign(session, data, len(data), None, byref(n))
+    sig = create_string_buffer(n.value)
+    self.so.C_Sign(session, data, len(data), sig, byref(n))
+    return sig.raw
+
+  def C_VerifyInit(self, session, mechanism_type, public_key):
+    mechanism = CK_MECHANISM(mechanism_type, None, 0)
+    self.so.C_VerifyInit(session, byref(mechanism), public_key)
+
+  def C_Verify(self, session, data, signature):
+    self.so.C_Verify(session, data, len(data), signature, len(signature))
 
 __all__ = ["PKCS11"]
 __all__.extend(name for name in globals()