Python interface API will need to be cryptech.py11 for installation.

9 files changed, 1522 insertions, 0 deletions

diff --git a/cryptech/__init__.py b/cryptech/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/cryptech/__init__.py
diff --git a/cryptech/py11/__init__.py b/cryptech/py11/__init__.py
new file mode 100644
index 0000000..46b62d6
--- /dev/null
+++ b/cryptech/py11/__init__.py
@@ -0,0 +1,270 @@
+"""
+This is a Python interface to PKCS #11, using the ctypes module from
+the Python standard library.
+
+This is not (yet?) a complete implementation.  It's intended primarily
+to simplify testing of the underlying PKCS #11 shared library.
+"""
+
+from ctypes      import *
+from .exceptions import *
+from .types      import *
+from .constants  import *
+from .attributes import *
+from .prototypes import *
+
+
+class PKCS11 (object):
+  """
+  PKCS #11 API object, encapsulating the PKCS #11 library itself.
+  Sample usage:
+
+    from cryptech.py11 import *
+
+    p11 = PKCS11()
+    p11.C_Initialize()
+    session = p11.C_OpenSession()
+    p11.C_login(session, CK_USER, "secret")
+    p11.C_FindObjectsInit(session, {CKA_CLASS: CKO_PRIVATE_KEY, CKA_KEY_TYPE: CKK_EC, CKA_ID: foo})
+    keys = list(p11.C_FindObjects(session))
+    p11.C_FindObjectsFinal(session)
+    if len(keys) != 1:
+      raise RuntimeError
+    p11.C_SignInit(session, CK_ECDSA_SHA256, keys[0])
+    sig = p11.Sign(session, "Your mother was a hamster")
+    p11.C_CloseAllSessions(slot)
+    p11.C_Finalize()
+
+  The full raw PKCS #11 API is available via the .so attribute, but
+  using this can be tricky, both because it requires strict adherence
+  to the C API and because one needs to be careful not to run afoul of
+  the Python garbage collector.
+
+  The example above uses a set of interface routines built on top of the
+  raw PKCS #11 API, which map the API into something a bit more Pythonic.
+  """
+
+  def __init__(self, so_name = "libpkcs11.so"):
+    self.so_name = so_name
+    self.so = CDLL(so_name)
+    def raise_on_failure(rv):
+      if rv != CKR_OK:
+        raise CKR_Exception.ckr_map[rv]
+    for name, args in Prototypes.iteritems():
+      func = getattr(self.so, name)
+      func.restype = raise_on_failure
+      func.argtypes = args
+    self.adb = AttributeDB()
+
+  def __getattr__(self, name):
+    return getattr(self.so, name)
+
+  def C_GetFunctionList(self):
+    return self
+
+  @property
+  def version(self):
+    info = CK_INFO()
+    self.so.C_GetInfo(byref(info))
+    return info.cryptokiVersion
+
+  # Be very careful if you try to provide your own locking functions.
+  # For most purposes, if you really just want locking, you're best
+  # off specifying CKF_OS_LOCKING_OK and letting the C code deal with
+  # it.  The one case where you might want to provide your own locking
+  # is when writing tests to verify behavior of the locking code.
+  #
+  # We have to stash references to the callback functions passed to
+  # C_Initialize() to avoid dumping core when the garbage collector
+  # deletes the function pointer instances out from under the C code.
+
+  def C_Initialize(self, flags = 0, create_mutex = None, destroy_mutex = None, lock_mutex = None, unlock_mutex = None):
+    if flags == 0 and create_mutex is None and destroy_mutex is None and lock_mutex is None and unlock_mutex is None:
+      self._C_Initialize_args = None
+      self.so.C_Initialize(None)
+    else:
+      create_mutex  = CK_CREATEMUTEX()  if create_mutex  is None else CK_CREATEMUTEX(create_mutex)
+      destroy_mutex = CK_DESTROYMUTEX() if destroy_mutex is None else CK_DESTROYMUTEX(destroy_mutex)
+      lock_mutex    = CK_LOCKMUTEX()    if lock_mutex    is None else CK_LOCKMUTEX(lock_mutex)
+      unlock_mutex  = CK_UNLOCKMUTEX()  if unlock_mutex  is None else CK_UNLOCKMUTEX(unlock_mutex)
+      self._C_Initialize_args = CK_C_INITIALIZE_ARGS(create_mutex, destroy_mutex, lock_mutex, unlock_mutex, flags, None)
+      self.so.C_Initialize(cast(byref(self._C_Initialize_args), CK_VOID_PTR))
+
+  def C_Finalize(self):
+    self.so.C_Finalize(None)
+    self._C_Initialize_args = None
+
+  def C_GetSlotList(self):
+    count = CK_ULONG()
+    self.so.C_GetSlotList(CK_TRUE, None, byref(count))
+    slots = (CK_SLOT_ID * count.value)()
+    self.so.C_GetSlotList(CK_TRUE, slots, byref(count))
+    return tuple(slots[i] for i in xrange(count.value))
+
+  def C_GetTokenInfo(self, slot_id):
+    token_info = CK_TOKEN_INFO()
+    self.so.C_GetTokenInfo(slot_id, byref(token_info))
+    return token_info
+
+  def C_OpenSession(self, slot, flags = CKF_RW_SESSION, application = None, notify = CK_NOTIFY()):
+    flags |= CKF_SERIAL_SESSION
+    handle = CK_SESSION_HANDLE()
+    self.so.C_OpenSession(slot, flags, application, notify, byref(handle))
+    return handle.value
+
+  def C_GenerateRandom(self, session, n):
+    buffer = create_string_buffer(n)
+    self.so.C_GenerateRandom(session, buffer, sizeof(buffer))
+    return buffer.raw
+
+  def C_Login(self, session, user, pin):
+    self.so.C_Login(session, user, pin, len(pin))
+
+  def C_GetAttributeValue(self, session_handle, object_handle, *attributes):
+    if len(attributes) == 1 and isinstance(attributes[0], (list, tuple)):
+      attributes = attributes[0]
+    template = self.adb.getvalue_create_template(attributes)
+    self.so.C_GetAttributeValue(session_handle, object_handle, template, len(template))
+    self.adb.getvalue_allocate_template(template)
+    self.so.C_GetAttributeValue(session_handle, object_handle, template, len(template))
+    return self.adb.from_ctypes(template)
+
+  def C_FindObjectsInit(self, session, template = None, **kwargs):
+    if kwargs:
+      assert not template
+      template = kwargs
+    if template:
+      self.so.C_FindObjectsInit(session, self.adb.to_ctypes(template), len(template))
+    else:
+      self.so.C_FindObjectsInit(session, None, 0)
+
+  def C_FindObjects(self, session, chunk_size = 10):
+    objects = (CK_OBJECT_HANDLE * chunk_size)()
+    count   = CK_ULONG(1)
+    while count.value > 0:
+      self.so.C_FindObjects(session, objects, len(objects), byref(count))
+      for i in xrange(count.value):
+        yield objects[i]
+
+  def FindObjects(self, session, template = None, **kwargs):
+    self.C_FindObjectsInit(session, template, **kwargs)
+    result = tuple(self.C_FindObjects(session))
+    self.C_FindObjectsFinal(session)
+    return result
+
+  def _parse_GenerateKeyPair_template(self,
+                                      # Attributes common to public and private templates
+                                      CKA_ID,
+                                      CKA_LABEL         = None,
+                                      CKA_TOKEN         = False,
+                                      # Attributes only in private template
+                                      CKA_SIGN          = False,
+                                      CKA_DECRYPT       = False,
+                                      CKA_UNWRAP        = False,
+                                      CKA_SENSITIVE     = True,
+                                      CKA_PRIVATE       = True,
+                                      CKA_EXTRACTABLE   = False,
+                                      # Finer-grained control for CKA_TOKEN
+                                      public_CKA_TOKEN  = False,
+                                      private_CKA_TOKEN = False,
+                                      # Anything else is only in public template
+                                      **kwargs):
+    if CKA_LABEL is None:
+      CKA_LABEL = CKA_ID
+    return (dict(kwargs,
+                 CKA_LABEL      = CKA_LABEL,
+                 CKA_ID         = CKA_ID,
+                 CKA_TOKEN      = public_CKA_TOKEN or CKA_TOKEN),
+            dict(CKA_LABEL      = CKA_LABEL,
+                 CKA_ID         = CKA_ID,
+                 CKA_TOKEN      = private_CKA_TOKEN or CKA_TOKEN,
+                 CKA_SIGN       = CKA_SIGN,
+                 CKA_DECRYPT    = CKA_DECRYPT,
+                 CKA_UNWRAP     = CKA_UNWRAP,
+                 CKA_SENSITIVE  = CKA_SENSITIVE,
+                 CKA_PRIVATE    = CKA_PRIVATE,
+                 CKA_EXTRACTABLE = CKA_EXTRACTABLE))
+
+  def C_GenerateKeyPair(self, session, mechanism_type, public_template = None, private_template = None, **kwargs):
+    if kwargs:
+      assert not public_template and not private_template
+      public_template, private_template = self._parse_GenerateKeyPair_template(**kwargs)
+    public_template  = self.adb.to_ctypes(public_template)
+    private_template = self.adb.to_ctypes(private_template)
+    mechanism = CK_MECHANISM(mechanism_type, None, 0)
+    public_handle  = CK_OBJECT_HANDLE()
+    private_handle = CK_OBJECT_HANDLE()
+    self.so.C_GenerateKeyPair(session, byref(mechanism),
+                              public_template,  len(public_template),
+                              private_template, len(private_template),
+                              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_SignUpdate(self, session, data):
+    self.so.C_SignUpdate(session, data, len(data))
+
+  def C_SignFinal(self, session):
+    n = CK_ULONG()
+    self.so.C_SignFinal(session, None, byref(n))
+    sig = create_string_buffer(n.value)
+    self.so.C_SignFinal(session, 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))
+
+  def C_VerifyUpdate(self, session, data):
+    self.so.C_VerifyUpdate(session, data, len(data))
+
+  def C_VerifyFinal(self, session, signature):
+    self.so.C_VerifyFinal(session, signature, len(signature))
+
+  def C_CreateObject(self, session, template = None, **kwargs):
+    if kwargs:
+      assert not template
+      template = kwargs
+    template = self.adb.to_ctypes(template)
+    handle = CK_OBJECT_HANDLE()
+    self.so.C_CreateObject(session, template, len(template), byref(handle))
+    return handle.value
+
+  def C_DigestInit(self, session, mechanism_type):
+    mechanism = CK_MECHANISM(mechanism_type, None, 0)
+    self.so.C_DigestInit(session, byref(mechanism))
+
+  def C_Digest(self, session, data):
+    n = CK_ULONG()
+    self.so.C_Digest(session, data, len(data), None, byref(n))
+    hash = create_string_buffer(n.value)
+    self.so.C_Digest(session, data, len(data), hash, byref(n))
+    return hash.raw
+
+  def C_DigestUpdate(self, session, data):
+    self.so.C_DigestUpdate(session, data, len(data))
+
+  def C_DigestFinal(self, session):
+    n = CK_ULONG()
+    self.so.C_DigestFinal(session, None, byref(n))
+    hash = create_string_buffer(n.value)
+    self.so.C_DigestFinal(session, hash, byref(n))
+    return hash.raw
+
+__all__ = ["PKCS11"]
+__all__.extend(name for name in globals()
+               if name.startswith("CK")
+               or name.startswith("CRYPTOKI_"))
diff --git a/cryptech/py11/attribute_map.py b/cryptech/py11/attribute_map.py
new file mode 100644
index 0000000..b689d6e
--- /dev/null
+++ b/cryptech/py11/attribute_map.py
@@ -0,0 +1,54 @@
+# This file was generated automatically from attributes.yaml by build-py11-attributes.  Do not edit this file directly.
+
+attribute_map = {
+ 'CKA_COEFFICIENT': 'biginteger',
+ 'CKA_MECHANISM_TYPE': 'CK_MECHANISM_TYPE',
+ 'CKA_ID': 'bytearray',
+ 'CKA_VALUE': 'biginteger',
+ 'CKA_KEY_GEN_MECHANISM': 'CK_MECHANISM_TYPE',
+ 'CKA_LABEL': 'rfc2279string',
+ 'CKA_KEY_TYPE': 'CK_KEY_TYPE',
+ 'CKA_PRIME_2': 'biginteger',
+ 'CKA_APPLICATION': 'rfc2279string',
+ 'CKA_VERIFY': 'CK_BBOOL',
+ 'CKA_HASH_OF_ISSUER_PUBLIC_KEY': 'bytearray',
+ 'CKA_SIGN': 'CK_BBOOL',
+ 'CKA_MODULUS': 'biginteger',
+ 'CKA_START_DATE': 'CK_DATE',
+ 'CKA_CERTIFICATE_CATEGORY': 'CK_ULONG',
+ 'CKA_PRIVATE_EXPONENT': 'biginteger',
+ 'CKA_ALWAYS_SENSITIVE': 'CK_BBOOL',
+ 'CKA_LOCAL': 'CK_BBOOL',
+ 'CKA_PUBLIC_EXPONENT': 'biginteger',
+ 'CKA_SENSITIVE': 'CK_BBOOL',
+ 'CKA_WRAP_WITH_TRUSTED': 'CK_BBOOL',
+ 'CKA_EXTRACTABLE': 'CK_BBOOL',
+ 'CKA_SUBJECT': 'bytearray',
+ 'CKA_VERIFY_RECOVER': 'CK_BBOOL',
+ 'CKA_EXPONENT_1': 'biginteger',
+ 'CKA_TOKEN': 'CK_BBOOL',
+ 'CKA_DECRYPT': 'CK_BBOOL',
+ 'CKA_EC_PARAMS': 'bytearray',
+ 'CKA_END_DATE': 'CK_DATE',
+ 'CKA_JAVA_MIDP_SECURITY_DOMAIN': 'CK_ULONG',
+ 'CKA_MODIFIABLE': 'CK_BBOOL',
+ 'CKA_CHECK_VALUE': 'bytearray',
+ 'CKA_URL': 'rfc2279string',
+ 'CKA_SERIAL_NUMBER': 'bytearray',
+ 'CKA_MODULUS_BITS': 'CK_ULONG',
+ 'CKA_WRAP': 'CK_BBOOL',
+ 'CKA_SIGN_RECOVER': 'CK_BBOOL',
+ 'CKA_TRUSTED': 'CK_BBOOL',
+ 'CKA_DERIVE': 'CK_BBOOL',
+ 'CKA_UNWRAP': 'CK_BBOOL',
+ 'CKA_NEVER_EXTRACTABLE': 'CK_BBOOL',
+ 'CKA_PRIVATE': 'CK_BBOOL',
+ 'CKA_ENCRYPT': 'CK_BBOOL',
+ 'CKA_EXPONENT_2': 'biginteger',
+ 'CKA_PRIME_1': 'biginteger',
+ 'CKA_EC_POINT': 'bytearray',
+ 'CKA_ISSUER': 'bytearray',
+ 'CKA_CERTIFICATE_TYPE': 'CK_CERTIFICATE_TYPE',
+ 'CKA_CLASS': 'CK_OBJECT_CLASS',
+ 'CKA_OBJECT_ID': 'bytearray',
+ 'CKA_HASH_OF_SUBJECT_PUBLIC_KEY': 'bytearray'}
diff --git a/cryptech/py11/attributes.py b/cryptech/py11/attributes.py
new file mode 100644
index 0000000..56473ad
--- /dev/null
+++ b/cryptech/py11/attributes.py
@@ -0,0 +1,101 @@
+# An attempt at a Python interface to PKCS 11 using the scary ctypes
+# module from the Python standard library.
+
+from struct     import pack, unpack
+from ctypes     import *
+from .types     import *
+from .constants import *
+
+class Attribute(object):
+
+  @classmethod
+  def new(cls, attribute_name, type_name):
+    from . import constants
+    from . import types
+    assert attribute_name.startswith("CKA_")
+    attribute_number = getattr(constants, attribute_name)
+    type_class = getattr(types, type_name, str)
+    if type_class is CK_BBOOL:
+      cls = Attribute_CK_BBOOL
+    elif type_class is CK_ULONG:
+      cls = Attribute_CK_ULONG
+    elif type_name == "biginteger":
+      cls = Attribute_biginteger
+    return cls(attribute_name, attribute_number, type_name, type_class)
+
+  def __init__(self, attribute_name, attribute_number, type_name, type_class):
+    assert attribute_name.startswith("CKA_")
+    self.name = attribute_name
+    self.code = attribute_number
+    self.type_name = type_name
+    self.type_class = type_class
+
+  def encode(self, x): return x
+  def decode(self, x): return x
+
+class Attribute_CK_BBOOL(Attribute):
+  def encode(self, x): return chr(int(x))
+  def decode(self, x): return bool(ord(x))
+
+class Attribute_CK_ULONG(Attribute):
+  def encode(self, x): return pack("L", x)
+  def decode(self, x): return unpack("L", x)[0]
+
+class Attribute_biginteger(Attribute):
+  def encode(self, x): return "\x00" if x == 0 else ("%0*x" % (((x.bit_length() + 7) / 8) * 2, x)).decode("hex")
+  def decode(self, x): return long(x.encode("hex"), 16)
+
+
+class AttributeDB(object):
+
+  def __init__(self):
+    from .attribute_map import attribute_map
+    self.db = {}
+    for attribute_name, type_name in attribute_map.iteritems():
+      a = Attribute.new(attribute_name, type_name)
+      self.db[a.name] = a
+      self.db[a.code] = a
+
+  def encode(self, k, v):
+    return self.db[k].encode(v) if k in self.db else v
+
+  def decode(self, k, v):
+    return self.db[k].decode(v) if k in self.db else v
+
+  def getvalue_create_template(self, attributes):
+    attributes = tuple(self.db[a].code for a in attributes)
+    template = (CK_ATTRIBUTE * len(attributes))()
+    for i in xrange(len(attributes)):
+      template[i].type = attributes[i]
+      template[i].pValue = None
+      template[i].ulValueLen = 0
+    return template
+
+  def getvalue_allocate_template(self, template):
+    for t in template:
+      t.pValue = create_string_buffer(t.ulValueLen)
+
+  def from_ctypes(self, template):
+    return dict((t.type, self.decode(t.type, t.pValue[:t.ulValueLen]))
+                for t in template)
+
+  def to_ctypes(self, attributes):
+    attributes = tuple(attributes.iteritems()
+                       if isinstance(attributes, dict) else
+                       attributes)
+    template = (CK_ATTRIBUTE * len(attributes))()
+    for i, kv in enumerate(attributes):
+      k, v = kv
+      if k in self.db:
+        a = self.db[k]
+        k, v = a.code, a.encode(v)
+      template[i].type = k
+      template[i].pValue = create_string_buffer(v)
+      template[i].ulValueLen = len(v)
+    return template
+
+  def attribute_name(self, code):
+    return self.db[code].name
+
+  def attribute_code(self, name):
+    return self.db[name].code
diff --git a/cryptech/py11/constants.py b/cryptech/py11/constants.py
new file mode 100644
index 0000000..a8392ea
--- /dev/null
+++ b/cryptech/py11/constants.py
@@ -0,0 +1,615 @@
+# An attempt at a Python interface to PKCS 11 using the scary ctypes
+# module from the Python standard library.
+
+# This code is derived from the RSA PKCS #11 C header files, which say:
+#
+# License to copy and use this software is granted provided that it is
+# identified as "RSA Security Inc. PKCS #11 Cryptographic Token Interface
+# (Cryptoki)" in all material mentioning or referencing this software.
+#
+# License is also granted to make and use derivative works provided that
+# such works are identified as "derived from the RSA Security Inc. PKCS #11
+# Cryptographic Token Interface (Cryptoki)" in all material mentioning or
+# referencing the derived work.
+#
+# RSA Security Inc. makes no representations concerning either the
+# merchantability of this software or the suitability of this software for
+# any particular purpose. It is provided "as is" without express or implied
+# warranty of any kind.
+
+CRYPTOKI_VERSION_MAJOR                  = 2
+CRYPTOKI_VERSION_MINOR                  = 30
+CRYPTOKI_VERSION_AMENDMENT              = 0
+
+CK_TRUE                                 = 1
+CK_FALSE                                = 0
+
+CK_UNAVAILABLE_INFORMATION              = ~0
+CK_EFFECTIVELY_INFINITE                 = 0
+
+CK_INVALID_HANDLE                       = 0
+
+CKN_SURRENDER                           = 0
+CKN_OTP_CHANGED                         = 1
+
+CKF_TOKEN_PRESENT                       = 0x00000001
+CKF_REMOVABLE_DEVICE                    = 0x00000002
+CKF_HW_SLOT                             = 0x00000004
+CKF_RNG                                 = 0x00000001
+CKF_WRITE_PROTECTED                     = 0x00000002
+CKF_LOGIN_REQUIRED                      = 0x00000004
+CKF_USER_PIN_INITIALIZED                = 0x00000008
+CKF_RESTORE_KEY_NOT_NEEDED              = 0x00000020
+CKF_CLOCK_ON_TOKEN                      = 0x00000040
+CKF_PROTECTED_AUTHENTICATION_PATH	= 0x00000100
+CKF_DUAL_CRYPTO_OPERATIONS		= 0x00000200
+CKF_TOKEN_INITIALIZED			= 0x00000400
+CKF_SECONDARY_AUTHENTICATION		= 0x00000800
+CKF_USER_PIN_COUNT_LOW			= 0x00010000
+CKF_USER_PIN_FINAL_TRY			= 0x00020000
+CKF_USER_PIN_LOCKED			= 0x00040000
+CKF_USER_PIN_TO_BE_CHANGED		= 0x00080000
+CKF_SO_PIN_COUNT_LOW			= 0x00100000
+CKF_SO_PIN_FINAL_TRY			= 0x00200000
+CKF_SO_PIN_LOCKED			= 0x00400000
+CKF_SO_PIN_TO_BE_CHANGED		= 0x00800000
+CKF_ERROR_STATE                         = 0x01000000
+
+CKU_SO                                  = 0
+CKU_USER                                = 1
+CKU_CONTEXT_SPECIFIC			= 2
+
+CKS_RO_PUBLIC_SESSION			= 0
+CKS_RO_USER_FUNCTIONS			= 1
+CKS_RW_PUBLIC_SESSION			= 2
+CKS_RW_USER_FUNCTIONS			= 3
+CKS_RW_SO_FUNCTIONS			= 4
+
+CKF_RW_SESSION                          = 0x00000002
+CKF_SERIAL_SESSION			= 0x00000004
+
+CKO_DATA                                = 0x00000000
+CKO_CERTIFICATE                         = 0x00000001
+CKO_PUBLIC_KEY                          = 0x00000002
+CKO_PRIVATE_KEY				= 0x00000003
+CKO_SECRET_KEY				= 0x00000004
+CKO_HW_FEATURE				= 0x00000005
+CKO_DOMAIN_PARAMETERS			= 0x00000006
+CKO_MECHANISM				= 0x00000007
+CKO_OTP_KEY				= 0x00000008
+CKO_VENDOR_DEFINED			= 0x80000000
+
+CKH_MONOTONIC_COUNTER			= 0x00000001
+CKH_CLOCK				= 0x00000002
+CKH_USER_INTERFACE			= 0x00000003
+CKH_VENDOR_DEFINED			= 0x80000000
+
+CKK_RSA					= 0x00000000
+CKK_DSA					= 0x00000001
+CKK_DH					= 0x00000002
+CKK_ECDSA				= 0x00000003
+CKK_EC					= 0x00000003
+CKK_X9_42_DH				= 0x00000004
+CKK_KEA					= 0x00000005
+CKK_GENERIC_SECRET			= 0x00000010
+CKK_RC2					= 0x00000011
+CKK_RC4					= 0x00000012
+CKK_DES					= 0x00000013
+CKK_DES2				= 0x00000014
+CKK_DES3				= 0x00000015
+CKK_CAST				= 0x00000016
+CKK_CAST3				= 0x00000017
+CKK_CAST5				= 0x00000018
+CKK_CAST128				= 0x00000018
+CKK_RC5					= 0x00000019
+CKK_IDEA				= 0x0000001A
+CKK_SKIPJACK				= 0x0000001B
+CKK_BATON				= 0x0000001C
+CKK_JUNIPER				= 0x0000001D
+CKK_CDMF				= 0x0000001E
+CKK_AES					= 0x0000001F
+CKK_BLOWFISH				= 0x00000020
+CKK_TWOFISH				= 0x00000021
+CKK_SECURID				= 0x00000022
+CKK_HOTP				= 0x00000023
+CKK_ACTI				= 0x00000024
+CKK_CAMELLIA				= 0x00000025
+CKK_ARIA				= 0x00000026
+CKK_MD5_HMAC				= 0x00000027
+CKK_SHA_1_HMAC				= 0x00000028
+CKK_RIPEMD128_HMAC			= 0x00000029
+CKK_RIPEMD160_HMAC			= 0x0000002A
+CKK_SHA256_HMAC				= 0x0000002B
+CKK_SHA384_HMAC				= 0x0000002C
+CKK_SHA512_HMAC				= 0x0000002D
+CKK_SHA224_HMAC				= 0x0000002E
+CKK_SEED				= 0x0000002F
+CKK_GOSTR3410				= 0x00000030
+CKK_GOSTR3411				= 0x00000031
+CKK_GOST28147				= 0x00000032
+CKK_VENDOR_DEFINED			= 0x80000000
+
+CKC_X_509				= 0x00000000
+CKC_X_509_ATTR_CERT			= 0x00000001
+CKC_WTLS				= 0x00000002
+CKC_VENDOR_DEFINED			= 0x80000000
+
+CKF_ARRAY_ATTRIBUTE			= 0x40000000
+
+CK_OTP_FORMAT_DECIMAL			= 0
+CK_OTP_FORMAT_HEXADECIMAL		= 1
+CK_OTP_FORMAT_ALPHANUMERIC		= 2
+CK_OTP_FORMAT_BINARY			= 3
+
+CK_OTP_PARAM_IGNORED			= 0
+CK_OTP_PARAM_OPTIONAL			= 1
+CK_OTP_PARAM_MANDATORY			= 2
+
+CKA_CLASS				= 0x00000000
+CKA_TOKEN				= 0x00000001
+CKA_PRIVATE				= 0x00000002
+CKA_LABEL				= 0x00000003
+CKA_APPLICATION				= 0x00000010
+CKA_VALUE				= 0x00000011
+CKA_OBJECT_ID				= 0x00000012
+CKA_CERTIFICATE_TYPE			= 0x00000080
+CKA_ISSUER				= 0x00000081
+CKA_SERIAL_NUMBER			= 0x00000082
+CKA_AC_ISSUER				= 0x00000083
+CKA_OWNER				= 0x00000084
+CKA_ATTR_TYPES				= 0x00000085
+CKA_TRUSTED				= 0x00000086
+CKA_CERTIFICATE_CATEGORY		= 0x00000087
+CKA_JAVA_MIDP_SECURITY_DOMAIN		= 0x00000088
+CKA_URL         			= 0x00000089
+CKA_HASH_OF_SUBJECT_PUBLIC_KEY		= 0x0000008A
+CKA_HASH_OF_ISSUER_PUBLIC_KEY		= 0x0000008B
+CKA_CHECK_VALUE				= 0x00000090
+CKA_KEY_TYPE				= 0x00000100
+CKA_SUBJECT				= 0x00000101
+CKA_ID                                  = 0x00000102
+CKA_SENSITIVE				= 0x00000103
+CKA_ENCRYPT				= 0x00000104
+CKA_DECRYPT				= 0x00000105
+CKA_WRAP				= 0x00000106
+CKA_UNWRAP				= 0x00000107
+CKA_SIGN				= 0x00000108
+CKA_SIGN_RECOVER			= 0x00000109
+CKA_VERIFY				= 0x0000010A
+CKA_VERIFY_RECOVER			= 0x0000010B
+CKA_DERIVE				= 0x0000010C
+CKA_START_DATE				= 0x00000110
+CKA_END_DATE				= 0x00000111
+CKA_MODULUS				= 0x00000120
+CKA_MODULUS_BITS			= 0x00000121
+CKA_PUBLIC_EXPONENT			= 0x00000122
+CKA_PRIVATE_EXPONENT			= 0x00000123
+CKA_PRIME_1				= 0x00000124
+CKA_PRIME_2				= 0x00000125
+CKA_EXPONENT_1				= 0x00000126
+CKA_EXPONENT_2				= 0x00000127
+CKA_COEFFICIENT				= 0x00000128
+CKA_PRIME				= 0x00000130
+CKA_SUBPRIME				= 0x00000131
+CKA_BASE				= 0x00000132
+CKA_PRIME_BITS				= 0x00000133
+CKA_SUBPRIME_BITS			= 0x00000134
+CKA_SUB_PRIME_BITS			= CKA_SUBPRIME_BITS
+CKA_VALUE_BITS				= 0x00000160
+CKA_VALUE_LEN				= 0x00000161
+CKA_EXTRACTABLE				= 0x00000162
+CKA_LOCAL				= 0x00000163
+CKA_NEVER_EXTRACTABLE			= 0x00000164
+CKA_ALWAYS_SENSITIVE			= 0x00000165
+CKA_KEY_GEN_MECHANISM			= 0x00000166
+CKA_MODIFIABLE				= 0x00000170
+CKA_ECDSA_PARAMS			= 0x00000180
+CKA_EC_PARAMS				= 0x00000180
+CKA_EC_POINT				= 0x00000181
+CKA_SECONDARY_AUTH			= 0x00000200
+CKA_AUTH_PIN_FLAGS			= 0x00000201
+CKA_ALWAYS_AUTHENTICATE			= 0x00000202
+CKA_WRAP_WITH_TRUSTED			= 0x00000210
+CKA_WRAP_TEMPLATE			= (CKF_ARRAY_ATTRIBUTE|0x00000211)
+CKA_UNWRAP_TEMPLATE			= (CKF_ARRAY_ATTRIBUTE|0x00000212)
+CKA_DERIVE_TEMPLATE			= (CKF_ARRAY_ATTRIBUTE|0x00000213)
+CKA_OTP_FORMAT				= 0x00000220
+CKA_OTP_LENGTH				= 0x00000221
+CKA_OTP_TIME_INTERVAL			= 0x00000222
+CKA_OTP_USER_FRIENDLY_MODE		= 0x00000223
+CKA_OTP_CHALLENGE_REQUIREMENT		= 0x00000224
+CKA_OTP_TIME_REQUIREMENT		= 0x00000225
+CKA_OTP_COUNTER_REQUIREMENT		= 0x00000226
+CKA_OTP_PIN_REQUIREMENT			= 0x00000227
+CKA_OTP_COUNTER				= 0x0000022E
+CKA_OTP_TIME				= 0x0000022F
+CKA_OTP_USER_IDENTIFIER			= 0x0000022A
+CKA_OTP_SERVICE_IDENTIFIER              = 0x0000022B
+CKA_OTP_SERVICE_LOGO			= 0x0000022C
+CKA_OTP_SERVICE_LOGO_TYPE		= 0x0000022D
+CKA_GOSTR3410_PARAMS			= 0x00000250
+CKA_GOSTR3411_PARAMS			= 0x00000251
+CKA_GOST28147_PARAMS			= 0x00000252
+CKA_HW_FEATURE_TYPE			= 0x00000300
+CKA_RESET_ON_INIT			= 0x00000301
+CKA_HAS_RESET				= 0x00000302
+CKA_PIXEL_X				= 0x00000400
+CKA_PIXEL_Y				= 0x00000401
+CKA_RESOLUTION				= 0x00000402
+CKA_CHAR_ROWS				= 0x00000403
+CKA_CHAR_COLUMNS			= 0x00000404
+CKA_COLOR				= 0x00000405
+CKA_BITS_PER_PIXEL			= 0x00000406
+CKA_CHAR_SETS				= 0x00000480
+CKA_ENCODING_METHODS			= 0x00000481
+CKA_MIME_TYPES				= 0x00000482
+CKA_MECHANISM_TYPE			= 0x00000500
+CKA_REQUIRED_CMS_ATTRIBUTES		= 0x00000501
+CKA_DEFAULT_CMS_ATTRIBUTES		= 0x00000502
+CKA_SUPPORTED_CMS_ATTRIBUTES		= 0x00000503
+CKA_ALLOWED_MECHANISMS			= (CKF_ARRAY_ATTRIBUTE|0x00000600)
+CKA_VENDOR_DEFINED			= 0x80000000
+
+CKM_RSA_PKCS_KEY_PAIR_GEN		= 0x00000000
+CKM_RSA_PKCS				= 0x00000001
+CKM_RSA_9796				= 0x00000002
+CKM_RSA_X_509				= 0x00000003
+CKM_MD2_RSA_PKCS			= 0x00000004
+CKM_MD5_RSA_PKCS			= 0x00000005
+CKM_SHA1_RSA_PKCS			= 0x00000006
+CKM_RIPEMD128_RSA_PKCS			= 0x00000007
+CKM_RIPEMD160_RSA_PKCS			= 0x00000008
+CKM_RSA_PKCS_OAEP			= 0x00000009
+CKM_RSA_X9_31_KEY_PAIR_GEN		= 0x0000000A
+CKM_RSA_X9_31                           = 0x0000000B
+CKM_SHA1_RSA_X9_31			= 0x0000000C
+CKM_RSA_PKCS_PSS			= 0x0000000D
+CKM_SHA1_RSA_PKCS_PSS			= 0x0000000E
+CKM_DSA_KEY_PAIR_GEN			= 0x00000010
+CKM_DSA 				= 0x00000011
+CKM_DSA_SHA1				= 0x00000012
+CKM_DSA_SHA224				= 0x00000013
+CKM_DSA_SHA256				= 0x00000014
+CKM_DSA_SHA384				= 0x00000015
+CKM_DSA_SHA512				= 0x00000016
+CKM_DH_PKCS_KEY_PAIR_GEN		= 0x00000020
+CKM_DH_PKCS_DERIVE			= 0x00000021
+CKM_X9_42_DH_KEY_PAIR_GEN		= 0x00000030
+CKM_X9_42_DH_DERIVE			= 0x00000031
+CKM_X9_42_DH_HYBRID_DERIVE		= 0x00000032
+CKM_X9_42_MQV_DERIVE			= 0x00000033
+CKM_SHA256_RSA_PKCS			= 0x00000040
+CKM_SHA384_RSA_PKCS			= 0x00000041
+CKM_SHA512_RSA_PKCS			= 0x00000042
+CKM_SHA256_RSA_PKCS_PSS			= 0x00000043
+CKM_SHA384_RSA_PKCS_PSS			= 0x00000044
+CKM_SHA512_RSA_PKCS_PSS			= 0x00000045
+CKM_SHA224_RSA_PKCS			= 0x00000046
+CKM_SHA224_RSA_PKCS_PSS			= 0x00000047
+CKM_RC2_KEY_GEN				= 0x00000100
+CKM_RC2_ECB				= 0x00000101
+CKM_RC2_CBC				= 0x00000102
+CKM_RC2_MAC				= 0x00000103
+CKM_RC2_MAC_GENERAL			= 0x00000104
+CKM_RC2_CBC_PAD				= 0x00000105
+CKM_RC4_KEY_GEN				= 0x00000110
+CKM_RC4					= 0x00000111
+CKM_DES_KEY_GEN				= 0x00000120
+CKM_DES_ECB				= 0x00000121
+CKM_DES_CBC				= 0x00000122
+CKM_DES_MAC				= 0x00000123
+CKM_DES_MAC_GENERAL			= 0x00000124
+CKM_DES_CBC_PAD				= 0x00000125
+CKM_DES2_KEY_GEN			= 0x00000130
+CKM_DES3_KEY_GEN			= 0x00000131
+CKM_DES3_ECB				= 0x00000132
+CKM_DES3_CBC				= 0x00000133
+CKM_DES3_MAC				= 0x00000134
+CKM_DES3_MAC_GENERAL			= 0x00000135
+CKM_DES3_CBC_PAD			= 0x00000136
+CKM_DES3_CMAC_GENERAL			= 0x00000137
+CKM_DES3_CMAC				= 0x00000138
+CKM_CDMF_KEY_GEN			= 0x00000140
+CKM_CDMF_ECB				= 0x00000141
+CKM_CDMF_CBC				= 0x00000142
+CKM_CDMF_MAC				= 0x00000143
+CKM_CDMF_MAC_GENERAL			= 0x00000144
+CKM_CDMF_CBC_PAD			= 0x00000145
+CKM_DES_OFB64				= 0x00000150
+CKM_DES_OFB8				= 0x00000151
+CKM_DES_CFB64				= 0x00000152
+CKM_DES_CFB8				= 0x00000153
+CKM_MD2                                 = 0x00000200
+CKM_MD2_HMAC				= 0x00000201
+CKM_MD2_HMAC_GENERAL			= 0x00000202
+CKM_MD5 				= 0x00000210
+CKM_MD5_HMAC				= 0x00000211
+CKM_MD5_HMAC_GENERAL			= 0x00000212
+CKM_SHA_1				= 0x00000220
+CKM_SHA_1_HMAC				= 0x00000221
+CKM_SHA_1_HMAC_GENERAL			= 0x00000222
+CKM_RIPEMD128				= 0x00000230
+CKM_RIPEMD128_HMAC			= 0x00000231
+CKM_RIPEMD128_HMAC_GENERAL		= 0x00000232
+CKM_RIPEMD160				= 0x00000240
+CKM_RIPEMD160_HMAC			= 0x00000241
+CKM_RIPEMD160_HMAC_GENERAL		= 0x00000242
+CKM_SHA256				= 0x00000250
+CKM_SHA256_HMAC				= 0x00000251
+CKM_SHA256_HMAC_GENERAL			= 0x00000252
+CKM_SHA224				= 0x00000255
+CKM_SHA224_HMAC				= 0x00000256
+CKM_SHA224_HMAC_GENERAL			= 0x00000257
+CKM_SHA384				= 0x00000260
+CKM_SHA384_HMAC				= 0x00000261
+CKM_SHA384_HMAC_GENERAL			= 0x00000262
+CKM_SHA512				= 0x00000270
+CKM_SHA512_HMAC				= 0x00000271
+CKM_SHA512_HMAC_GENERAL			= 0x00000272
+CKM_SECURID_KEY_GEN			= 0x00000280
+CKM_SECURID				= 0x00000282
+CKM_HOTP_KEY_GEN			= 0x00000290
+CKM_HOTP				= 0x00000291
+CKM_ACTI				= 0x000002A0
+CKM_ACTI_KEY_GEN			= 0x000002A1
+CKM_CAST_KEY_GEN			= 0x00000300
+CKM_CAST_ECB				= 0x00000301
+CKM_CAST_CBC				= 0x00000302
+CKM_CAST_MAC				= 0x00000303
+CKM_CAST_MAC_GENERAL			= 0x00000304
+CKM_CAST_CBC_PAD			= 0x00000305
+CKM_CAST3_KEY_GEN			= 0x00000310
+CKM_CAST3_ECB				= 0x00000311
+CKM_CAST3_CBC				= 0x00000312
+CKM_CAST3_MAC				= 0x00000313
+CKM_CAST3_MAC_GENERAL			= 0x00000314
+CKM_CAST3_CBC_PAD			= 0x00000315
+CKM_CAST5_KEY_GEN			= 0x00000320
+CKM_CAST128_KEY_GEN			= 0x00000320
+CKM_CAST5_ECB				= 0x00000321
+CKM_CAST128_ECB				= 0x00000321
+CKM_CAST5_CBC				= 0x00000322
+CKM_CAST128_CBC				= 0x00000322
+CKM_CAST5_MAC				= 0x00000323
+CKM_CAST128_MAC				= 0x00000323
+CKM_CAST5_MAC_GENERAL			= 0x00000324
+CKM_CAST128_MAC_GENERAL			= 0x00000324
+CKM_CAST5_CBC_PAD			= 0x00000325
+CKM_CAST128_CBC_PAD			= 0x00000325
+CKM_RC5_KEY_GEN				= 0x00000330
+CKM_RC5_ECB				= 0x00000331
+CKM_RC5_CBC				= 0x00000332
+CKM_RC5_MAC				= 0x00000333
+CKM_RC5_MAC_GENERAL			= 0x00000334
+CKM_RC5_CBC_PAD				= 0x00000335
+CKM_IDEA_KEY_GEN			= 0x00000340
+CKM_IDEA_ECB				= 0x00000341
+CKM_IDEA_CBC				= 0x00000342
+CKM_IDEA_MAC				= 0x00000343
+CKM_IDEA_MAC_GENERAL			= 0x00000344
+CKM_IDEA_CBC_PAD			= 0x00000345
+CKM_GENERIC_SECRET_KEY_GEN		= 0x00000350
+CKM_CONCATENATE_BASE_AND_KEY		= 0x00000360
+CKM_CONCATENATE_BASE_AND_DATA		= 0x00000362
+CKM_CONCATENATE_DATA_AND_BASE		= 0x00000363
+CKM_XOR_BASE_AND_DATA			= 0x00000364
+CKM_EXTRACT_KEY_FROM_KEY		= 0x00000365
+CKM_SSL3_PRE_MASTER_KEY_GEN		= 0x00000370
+CKM_SSL3_MASTER_KEY_DERIVE		= 0x00000371
+CKM_SSL3_KEY_AND_MAC_DERIVE		= 0x00000372
+CKM_SSL3_MASTER_KEY_DERIVE_DH		= 0x00000373
+CKM_TLS_PRE_MASTER_KEY_GEN		= 0x00000374
+CKM_TLS_MASTER_KEY_DERIVE		= 0x00000375
+CKM_TLS_KEY_AND_MAC_DERIVE		= 0x00000376
+CKM_TLS_MASTER_KEY_DERIVE_DH		= 0x00000377
+CKM_TLS_PRF				= 0x00000378
+CKM_SSL3_MD5_MAC			= 0x00000380
+CKM_SSL3_SHA1_MAC			= 0x00000381
+CKM_MD5_KEY_DERIVATION			= 0x00000390
+CKM_MD2_KEY_DERIVATION			= 0x00000391
+CKM_SHA1_KEY_DERIVATION			= 0x00000392
+CKM_SHA256_KEY_DERIVATION		= 0x00000393
+CKM_SHA384_KEY_DERIVATION		= 0x00000394
+CKM_SHA512_KEY_DERIVATION		= 0x00000395
+CKM_SHA224_KEY_DERIVATION		= 0x00000396
+CKM_PBE_MD2_DES_CBC			= 0x000003A0
+CKM_PBE_MD5_DES_CBC			= 0x000003A1
+CKM_PBE_MD5_CAST_CBC			= 0x000003A2
+CKM_PBE_MD5_CAST3_CBC			= 0x000003A3
+CKM_PBE_MD5_CAST5_CBC			= 0x000003A4
+CKM_PBE_MD5_CAST128_CBC			= 0x000003A4
+CKM_PBE_SHA1_CAST5_CBC			= 0x000003A5
+CKM_PBE_SHA1_CAST128_CBC		= 0x000003A5
+CKM_PBE_SHA1_RC4_128			= 0x000003A6
+CKM_PBE_SHA1_RC4_40			= 0x000003A7
+CKM_PBE_SHA1_DES3_EDE_CBC		= 0x000003A8
+CKM_PBE_SHA1_DES2_EDE_CBC		= 0x000003A9
+CKM_PBE_SHA1_RC2_128_CBC		= 0x000003AA
+CKM_PBE_SHA1_RC2_40_CBC			= 0x000003AB
+CKM_PKCS5_PBKD2				= 0x000003B0
+CKM_PBA_SHA1_WITH_SHA1_HMAC		= 0x000003C0
+CKM_WTLS_PRE_MASTER_KEY_GEN		= 0x000003D0
+CKM_WTLS_MASTER_KEY_DERIVE		= 0x000003D1
+CKM_WTLS_MASTER_KEY_DERIVE_DH_ECC	= 0x000003D2
+CKM_WTLS_PRF				= 0x000003D3
+CKM_WTLS_SERVER_KEY_AND_MAC_DERIVE	= 0x000003D4
+CKM_WTLS_CLIENT_KEY_AND_MAC_DERIVE	= 0x000003D5
+CKM_KEY_WRAP_LYNKS			= 0x00000400
+CKM_KEY_WRAP_SET_OAEP			= 0x00000401
+CKM_CMS_SIG				= 0x00000500
+CKM_KIP_DERIVE				= 0x00000510
+CKM_KIP_WRAP				= 0x00000511
+CKM_KIP_MAC				= 0x00000512
+CKM_CAMELLIA_KEY_GEN			= 0x00000550
+CKM_CAMELLIA_ECB			= 0x00000551
+CKM_CAMELLIA_CBC			= 0x00000552
+CKM_CAMELLIA_MAC			= 0x00000553
+CKM_CAMELLIA_MAC_GENERAL		= 0x00000554
+CKM_CAMELLIA_CBC_PAD			= 0x00000555
+CKM_CAMELLIA_ECB_ENCRYPT_DATA		= 0x00000556
+CKM_CAMELLIA_CBC_ENCRYPT_DATA		= 0x00000557
+CKM_CAMELLIA_CTR			= 0x00000558
+CKM_ARIA_KEY_GEN			= 0x00000560
+CKM_ARIA_ECB				= 0x00000561
+CKM_ARIA_CBC				= 0x00000562
+CKM_ARIA_MAC				= 0x00000563
+CKM_ARIA_MAC_GENERAL			= 0x00000564
+CKM_ARIA_CBC_PAD			= 0x00000565
+CKM_ARIA_ECB_ENCRYPT_DATA		= 0x00000566
+CKM_ARIA_CBC_ENCRYPT_DATA		= 0x00000567
+CKM_SEED_KEY_GEN			= 0x00000650
+CKM_SEED_ECB				= 0x00000651
+CKM_SEED_CBC				= 0x00000652
+CKM_SEED_MAC				= 0x00000653
+CKM_SEED_MAC_GENERAL			= 0x00000654
+CKM_SEED_CBC_PAD			= 0x00000655
+CKM_SEED_ECB_ENCRYPT_DATA		= 0x00000656
+CKM_SEED_CBC_ENCRYPT_DATA		= 0x00000657
+CKM_SKIPJACK_KEY_GEN			= 0x00001000
+CKM_SKIPJACK_ECB64			= 0x00001001
+CKM_SKIPJACK_CBC64			= 0x00001002
+CKM_SKIPJACK_OFB64			= 0x00001003
+CKM_SKIPJACK_CFB64			= 0x00001004
+CKM_SKIPJACK_CFB32			= 0x00001005
+CKM_SKIPJACK_CFB16			= 0x00001006
+CKM_SKIPJACK_CFB8			= 0x00001007
+CKM_SKIPJACK_WRAP			= 0x00001008
+CKM_SKIPJACK_PRIVATE_WRAP		= 0x00001009
+CKM_SKIPJACK_RELAYX			= 0x0000100a
+CKM_KEA_KEY_PAIR_GEN			= 0x00001010
+CKM_KEA_KEY_DERIVE			= 0x00001011
+CKM_FORTEZZA_TIMESTAMP			= 0x00001020
+CKM_BATON_KEY_GEN			= 0x00001030
+CKM_BATON_ECB128			= 0x00001031
+CKM_BATON_ECB96                         = 0x00001032
+CKM_BATON_CBC128			= 0x00001033
+CKM_BATON_COUNTER			= 0x00001034
+CKM_BATON_SHUFFLE			= 0x00001035
+CKM_BATON_WRAP                          = 0x00001036
+CKM_ECDSA_KEY_PAIR_GEN			= 0x00001040
+CKM_EC_KEY_PAIR_GEN			= 0x00001040
+CKM_ECDSA       			= 0x00001041
+CKM_ECDSA_SHA1          		= 0x00001042
+CKM_ECDSA_SHA224			= 0x00001043
+CKM_ECDSA_SHA256			= 0x00001044
+CKM_ECDSA_SHA384			= 0x00001045
+CKM_ECDSA_SHA512			= 0x00001046
+CKM_ECDH1_DERIVE			= 0x00001050
+CKM_ECDH1_COFACTOR_DERIVE		= 0x00001051
+CKM_ECMQV_DERIVE			= 0x00001052
+CKM_JUNIPER_KEY_GEN			= 0x00001060
+CKM_JUNIPER_ECB128			= 0x00001061
+CKM_JUNIPER_CBC128			= 0x00001062
+CKM_JUNIPER_COUNTER			= 0x00001063
+CKM_JUNIPER_SHUFFLE			= 0x00001064
+CKM_JUNIPER_WRAP			= 0x00001065
+CKM_FASTHASH    			= 0x00001070
+CKM_AES_KEY_GEN				= 0x00001080
+CKM_AES_ECB				= 0x00001081
+CKM_AES_CBC				= 0x00001082
+CKM_AES_MAC				= 0x00001083
+CKM_AES_MAC_GENERAL			= 0x00001084
+CKM_AES_CBC_PAD				= 0x00001085
+CKM_AES_CTR				= 0x00001086
+CKM_AES_CTS				= 0x00001089
+CKM_AES_CMAC				= 0x0000108A
+CKM_AES_CMAC_GENERAL			= 0x0000108B
+CKM_BLOWFISH_KEY_GEN			= 0x00001090
+CKM_BLOWFISH_CBC			= 0x00001091
+CKM_TWOFISH_KEY_GEN			= 0x00001092
+CKM_TWOFISH_CBC				= 0x00001093
+CKM_AES_GCM				= 0x00001087
+CKM_AES_CCM				= 0x00001088
+CKM_AES_KEY_WRAP			= 0x00001090
+CKM_AES_KEY_WRAP_PAD			= 0x00001091
+CKM_BLOWFISH_CBC_PAD			= 0x00001094
+CKM_TWOFISH_CBC_PAD			= 0x00001095
+CKM_DES_ECB_ENCRYPT_DATA		= 0x00001100
+CKM_DES_CBC_ENCRYPT_DATA		= 0x00001101
+CKM_DES3_ECB_ENCRYPT_DATA		= 0x00001102
+CKM_DES3_CBC_ENCRYPT_DATA		= 0x00001103
+CKM_AES_ECB_ENCRYPT_DATA		= 0x00001104
+CKM_AES_CBC_ENCRYPT_DATA		= 0x00001105
+CKM_GOSTR3410_KEY_PAIR_GEN		= 0x00001200
+CKM_GOSTR3410                           = 0x00001201
+CKM_GOSTR3410_WITH_GOSTR3411		= 0x00001202
+CKM_GOSTR3410_KEY_WRAP			= 0x00001203
+CKM_GOSTR3410_DERIVE			= 0x00001204
+CKM_GOSTR3411                           = 0x00001210
+CKM_GOSTR3411_HMAC			= 0x00001211
+CKM_GOST28147_KEY_GEN			= 0x00001220
+CKM_GOST28147_ECB			= 0x00001221
+CKM_GOST28147   			= 0x00001222
+CKM_GOST28147_MAC			= 0x00001223
+CKM_GOST28147_KEY_WRAP			= 0x00001224
+CKM_DSA_PARAMETER_GEN			= 0x00002000
+CKM_DH_PKCS_PARAMETER_GEN		= 0x00002001
+CKM_X9_42_DH_PARAMETER_GEN		= 0x00002002
+CKM_AES_OFB                             = 0x00002104
+CKM_AES_CFB64   			= 0x00002105
+CKM_AES_CFB8    			= 0x00002106
+CKM_AES_CFB128  			= 0x00002107
+CKM_RSA_PKCS_TPM_1_1			= 0x00004001
+CKM_RSA_PKCS_OAEP_TPM_1_1		= 0x00004002
+CKM_VENDOR_DEFINED			= 0x80000000
+
+CKF_HW          			= 0x00000001
+CKF_ENCRYPT             		= 0x00000100
+CKF_DECRYPT                     	= 0x00000200
+CKF_DIGEST                              = 0x00000400
+CKF_SIGN                                = 0x00000800
+CKF_SIGN_RECOVER			= 0x00001000
+CKF_VERIFY      			= 0x00002000
+CKF_VERIFY_RECOVER			= 0x00004000
+CKF_GENERATE            		= 0x00008000
+CKF_GENERATE_KEY_PAIR			= 0x00010000
+CKF_WRAP                        	= 0x00020000
+CKF_UNWRAP                              = 0x00040000
+CKF_DERIVE      			= 0x00080000
+CKF_EC_F_P      			= 0x00100000
+CKF_EC_F_2M             		= 0x00200000
+CKF_EC_ECPARAMETERS			= 0x00400000
+CKF_EC_NAMEDCURVE			= 0x00800000
+CKF_EC_UNCOMPRESS			= 0x01000000
+CKF_EC_COMPRESS                 	= 0x02000000
+CKF_EXTENSION   			= 0x80000000
+
+CKF_LIBRARY_CANT_CREATE_OS_THREADS	= 0x00000001
+CKF_OS_LOCKING_OK			= 0x00000002
+
+CKF_DONT_BLOCK                          = 1
+
+CKG_MGF1_SHA1                           = 0x00000001
+CKG_MGF1_SHA256                         = 0x00000002
+CKG_MGF1_SHA384 			= 0x00000003
+CKG_MGF1_SHA512 			= 0x00000004
+CKG_MGF1_SHA224 			= 0x00000005
+
+CKZ_DATA_SPECIFIED			= 0x00000001
+
+CKD_NULL                                = 0x00000001
+CKD_SHA1_KDF    			= 0x00000002
+
+CKD_SHA1_KDF_ASN1			= 0x00000003
+CKD_SHA1_KDF_CONCATENATE		= 0x00000004
+CKD_SHA224_KDF  			= 0x00000005
+CKD_SHA256_KDF  			= 0x00000006
+CKD_SHA384_KDF  			= 0x00000007
+CKD_SHA512_KDF  			= 0x00000008
+CKD_CPDIVERSIFY_KDF			= 0x00000009
+
+CK_OTP_VALUE                            = 0
+CK_OTP_PIN                              = 1
+CK_OTP_CHALLENGE			= 2
+CK_OTP_TIME                             = 3
+CK_OTP_COUNTER                          = 4
+CK_OTP_FLAGS    			= 5
+CK_OTP_OUTPUT_LENGTH			= 6
+CK_OTP_OUTPUT_FORMAT			= 7
+
+CKF_NEXT_OTP            		= 0x00000001
+CKF_EXCLUDE_TIME			= 0x00000002
+CKF_EXCLUDE_COUNTER			= 0x00000004
+CKF_EXCLUDE_CHALLENGE			= 0x00000008
+CKF_EXCLUDE_PIN                 	= 0x00000010
+CKF_USER_FRIENDLY_OTP			= 0x00000020
diff --git a/cryptech/py11/exceptions.py b/cryptech/py11/exceptions.py
new file mode 100644
index 0000000..7f86fe4
--- /dev/null
+++ b/cryptech/py11/exceptions.py
@@ -0,0 +1,128 @@
+# An attempt at a Python interface to PKCS 11 using the scary ctypes
+# module from the Python standard library.
+
+# This code is derived from the RSA PKCS #11 C header files, which say:
+#
+# License to copy and use this software is granted provided that it is
+# identified as "RSA Security Inc. PKCS #11 Cryptographic Token Interface
+# (Cryptoki)" in all material mentioning or referencing this software.
+#
+# License is also granted to make and use derivative works provided that
+# such works are identified as "derived from the RSA Security Inc. PKCS #11
+# Cryptographic Token Interface (Cryptoki)" in all material mentioning or
+# referencing the derived work.
+#
+# RSA Security Inc. makes no representations concerning either the
+# merchantability of this software or the suitability of this software for
+# any particular purpose. It is provided "as is" without express or implied
+# warranty of any kind.
+
+class CKR_Exception(Exception):
+  """
+  Base class for PKCS #11 exceptions.
+  """
+
+  ckr_code = None
+  ckr_map  = {}
+
+  def __int__(self):
+    return self.ckr_code
+
+CKR_OK                                                                    = 0x00000000
+
+class CKR_CANCEL        			(CKR_Exception): ckr_code = 0x00000001
+class CKR_HOST_MEMORY   			(CKR_Exception): ckr_code = 0x00000002
+class CKR_SLOT_ID_INVALI        		(CKR_Exception): ckr_code = 0x00000003
+class CKR_GENERAL_ERROR                 	(CKR_Exception): ckr_code = 0x00000005
+class CKR_FUNCTION_FAILED			(CKR_Exception): ckr_code = 0x00000006
+class CKR_ARGUMENTS_BAD                         (CKR_Exception): ckr_code = 0x00000007
+class CKR_NO_EVENT				(CKR_Exception): ckr_code = 0x00000008
+class CKR_NEED_TO_CREATE_THREADS		(CKR_Exception): ckr_code = 0x00000009
+class CKR_CANT_LOCK				(CKR_Exception): ckr_code = 0x0000000A
+class CKR_ATTRIBUTE_READ_ONLY			(CKR_Exception): ckr_code = 0x00000010
+class CKR_ATTRIBUTE_SENSITIVE			(CKR_Exception): ckr_code = 0x00000011
+class CKR_ATTRIBUTE_TYPE_INVALID		(CKR_Exception): ckr_code = 0x00000012
+class CKR_ATTRIBUTE_VALUE_INVALID		(CKR_Exception): ckr_code = 0x00000013
+class CKR_DATA_INVALID				(CKR_Exception): ckr_code = 0x00000020
+class CKR_DATA_LEN_RANGE			(CKR_Exception): ckr_code = 0x00000021
+class CKR_DEVICE_ERROR				(CKR_Exception): ckr_code = 0x00000030
+class CKR_DEVICE_MEMORY				(CKR_Exception): ckr_code = 0x00000031
+class CKR_DEVICE_REMOVED			(CKR_Exception): ckr_code = 0x00000032
+class CKR_ENCRYPTED_DATA_INVALID		(CKR_Exception): ckr_code = 0x00000040
+class CKR_ENCRYPTED_DATA_LEN_RANGE		(CKR_Exception): ckr_code = 0x00000041
+class CKR_FUNCTION_CANCELED			(CKR_Exception): ckr_code = 0x00000050
+class CKR_FUNCTION_NOT_PARALLEL			(CKR_Exception): ckr_code = 0x00000051
+class CKR_FUNCTION_NOT_SUPPORTED		(CKR_Exception): ckr_code = 0x00000054
+class CKR_KEY_HANDLE_INVALID			(CKR_Exception): ckr_code = 0x00000060
+class CKR_KEY_SIZE_RANGE			(CKR_Exception): ckr_code = 0x00000062
+class CKR_KEY_TYPE_INCONSISTENT			(CKR_Exception): ckr_code = 0x00000063
+class CKR_KEY_NOT_NEEDED			(CKR_Exception): ckr_code = 0x00000064
+class CKR_KEY_CHANGED				(CKR_Exception): ckr_code = 0x00000065
+class CKR_KEY_NEEDED				(CKR_Exception): ckr_code = 0x00000066
+class CKR_KEY_INDIGESTIBLE			(CKR_Exception): ckr_code = 0x00000067
+class CKR_KEY_FUNCTION_NOT_PERMITTED		(CKR_Exception): ckr_code = 0x00000068
+class CKR_KEY_NOT_WRAPPABLE			(CKR_Exception): ckr_code = 0x00000069
+class CKR_KEY_UNEXTRACTABLE			(CKR_Exception): ckr_code = 0x0000006A
+class CKR_MECHANISM_INVALID			(CKR_Exception): ckr_code = 0x00000070
+class CKR_MECHANISM_PARAM_INVALID		(CKR_Exception): ckr_code = 0x00000071
+class CKR_OBJECT_HANDLE_INVALID			(CKR_Exception): ckr_code = 0x00000082
+class CKR_OPERATION_ACTIVE			(CKR_Exception): ckr_code = 0x00000090
+class CKR_OPERATION_NOT_INITIALIZED		(CKR_Exception): ckr_code = 0x00000091
+class CKR_PIN_INCORRECT				(CKR_Exception): ckr_code = 0x000000A0
+class CKR_PIN_INVALID				(CKR_Exception): ckr_code = 0x000000A1
+class CKR_PIN_LEN_RANGE				(CKR_Exception): ckr_code = 0x000000A2
+class CKR_PIN_EXPIRED				(CKR_Exception): ckr_code = 0x000000A3
+class CKR_PIN_LOCKED				(CKR_Exception): ckr_code = 0x000000A4
+class CKR_SESSION_CLOSED			(CKR_Exception): ckr_code = 0x000000B0
+class CKR_SESSION_COUNT				(CKR_Exception): ckr_code = 0x000000B1
+class CKR_SESSION_HANDLE_INVALID		(CKR_Exception): ckr_code = 0x000000B3
+class CKR_SESSION_PARALLEL_NOT_SUPPORTED	(CKR_Exception): ckr_code = 0x000000B4
+class CKR_SESSION_READ_ONLY			(CKR_Exception): ckr_code = 0x000000B5
+class CKR_SESSION_EXISTS			(CKR_Exception): ckr_code = 0x000000B6
+class CKR_SESSION_READ_ONLY_EXISTS		(CKR_Exception): ckr_code = 0x000000B7
+class CKR_SESSION_READ_WRITE_SO_EXISTS		(CKR_Exception): ckr_code = 0x000000B8
+class CKR_SIGNATURE_INVALID			(CKR_Exception): ckr_code = 0x000000C0
+class CKR_SIGNATURE_LEN_RANGE			(CKR_Exception): ckr_code = 0x000000C1
+class CKR_TEMPLATE_INCOMPLETE			(CKR_Exception): ckr_code = 0x000000D0
+class CKR_TEMPLATE_INCONSISTENT			(CKR_Exception): ckr_code = 0x000000D1
+class CKR_TOKEN_NOT_PRESENT			(CKR_Exception): ckr_code = 0x000000E0
+class CKR_TOKEN_NOT_RECOGNIZED			(CKR_Exception): ckr_code = 0x000000E1
+class CKR_TOKEN_WRITE_PROTECTED			(CKR_Exception): ckr_code = 0x000000E2
+class CKR_UNWRAPPING_KEY_HANDLE_INVALID		(CKR_Exception): ckr_code = 0x000000F0
+class CKR_UNWRAPPING_KEY_SIZE_RANGE		(CKR_Exception): ckr_code = 0x000000F1
+class CKR_UNWRAPPING_KEY_TYPE_INCONSISTENT	(CKR_Exception): ckr_code = 0x000000F2
+class CKR_USER_ALREADY_LOGGED_IN		(CKR_Exception): ckr_code = 0x00000100
+class CKR_USER_NOT_LOGGED_IN			(CKR_Exception): ckr_code = 0x00000101
+class CKR_USER_PIN_NOT_INITIALIZED		(CKR_Exception): ckr_code = 0x00000102
+class CKR_USER_TYPE_INVALID			(CKR_Exception): ckr_code = 0x00000103
+class CKR_USER_ANOTHER_ALREADY_LOGGED_IN	(CKR_Exception): ckr_code = 0x00000104
+class CKR_USER_TOO_MANY_TYPES			(CKR_Exception): ckr_code = 0x00000105
+class CKR_WRAPPED_KEY_INVALID			(CKR_Exception): ckr_code = 0x00000110
+class CKR_WRAPPED_KEY_LEN_RANGE			(CKR_Exception): ckr_code = 0x00000112
+class CKR_WRAPPING_KEY_HANDLE_INVALID		(CKR_Exception): ckr_code = 0x00000113
+class CKR_WRAPPING_KEY_SIZE_RANGE		(CKR_Exception): ckr_code = 0x00000114
+class CKR_WRAPPING_KEY_TYPE_INCONSISTENT	(CKR_Exception): ckr_code = 0x00000115
+class CKR_RANDOM_SEED_NOT_SUPPORTED		(CKR_Exception): ckr_code = 0x00000120
+class CKR_RANDOM_NO_RNG				(CKR_Exception): ckr_code = 0x00000121
+class CKR_DOMAIN_PARAMS_INVALID			(CKR_Exception): ckr_code = 0x00000130
+class CKR_BUFFER_TOO_SMALL			(CKR_Exception): ckr_code = 0x00000150
+class CKR_SAVED_STATE_INVALID			(CKR_Exception): ckr_code = 0x00000160
+class CKR_INFORMATION_SENSITIVE			(CKR_Exception): ckr_code = 0x00000170
+class CKR_STATE_UNSAVEABLE			(CKR_Exception): ckr_code = 0x00000180
+class CKR_CRYPTOKI_NOT_INITIALIZED		(CKR_Exception): ckr_code = 0x00000190
+class CKR_CRYPTOKI_ALREADY_INITIALIZED		(CKR_Exception): ckr_code = 0x00000191
+class CKR_MUTEX_BAD				(CKR_Exception): ckr_code = 0x000001A0
+class CKR_MUTEX_NOT_LOCKED			(CKR_Exception): ckr_code = 0x000001A1
+class CKR_NEW_PIN_MODE				(CKR_Exception): ckr_code = 0x000001B0
+class CKR_NEXT_OTP				(CKR_Exception): ckr_code = 0x000001B1
+class CKR_EXCEEDED_MAX_ITERATIONS		(CKR_Exception): ckr_code = 0x000001B5
+class CKR_FIPS_SELF_TEST_FAILED			(CKR_Exception): ckr_code = 0x000001B6
+class CKR_LIBRARY_LOAD_FAILED			(CKR_Exception): ckr_code = 0x000001B7
+class CKR_PIN_TOO_WEAK  			(CKR_Exception): ckr_code = 0x000001B8
+class CKR_PUBLIC_KEY_INVALID			(CKR_Exception): ckr_code = 0x000001B9
+class CKR_FUNCTION_REJECTED			(CKR_Exception): ckr_code = 0x00000200
+class CKR_VENDOR_DEFINED			(CKR_Exception): ckr_code = 0x80000000
+
+for e in globals().values():
+  if isinstance(e, type) and issubclass(e, CKR_Exception) and e is not CKR_Exception:
+    CKR_Exception.ckr_map[e.ckr_code] = e
diff --git a/cryptech/py11/mutex.py b/cryptech/py11/mutex.py
new file mode 100644
index 0000000..da2123c
--- /dev/null
+++ b/cryptech/py11/mutex.py
@@ -0,0 +1,89 @@
+"""
+Optional Python mutex implementation for cryptech.py11 library,
+using the threading.Lock primitive to provide the mutex itself.
+
+Most of the code in this module has to do with mapping between the
+Python and PKCS #11 APIs.
+
+If you just want locking, it's probably simpler to let the C code
+handle it, by passing CKF_OS_LOCKING_OK to C_Initialize().
+
+The main reason for having a complete implementation in Python is to
+test the API.
+
+Sample usage:
+
+  from cryptech.py11       import *
+  from cryptech.py11.mutex import MutexDB
+
+  p11 = PKCS11()
+  mdb = MutexDB()
+  p11.C_Initialize(0, mdb.create, mdb.destroy, mdb.lock, mdb.unlock)
+
+"""
+
+from struct      import pack, unpack
+from .types      import *
+from .exceptions import *
+
+# This controls how big our mutex handles are.
+encoded_format = "=L"
+
+# These are all determined by encoded_format, don't touch.
+
+encoded_length = len(pack(encoded_format, 0))
+encoded_type   = CK_BYTE * encoded_length
+handle_max     = unpack(encoded_format, chr(0xff) * encoded_length)[0]
+
+class Mutex(object):
+
+  def __init__(self, handle):
+    from threading import Lock
+    self.encoded = encoded_type(*handle)
+    self.lock    = Lock()
+
+def p11_callback(func):
+  from threading import ThreadError
+  def wrapper(self, arg):
+    try:
+      func(self, arg)
+    except ThreadError, e:
+      print "Failed: %s" % e
+      return CKR_MUTEX_NOT_LOCKED.ckr_code
+    except Exception, e:
+      print "Failed: %s" % e
+      return CKR_FUNCTION_FAILED.ckr_code
+    else:
+      return CKR_OK
+  return wrapper
+
+class MutexDB(object):
+
+  def __init__(self):
+    self.mutexes = {}
+    self.next_handle = 0
+
+  def find_free_handle(self):
+    if len(self.mutexes) > handle_max:
+      raise RuntimeError
+    while self.next_handle in self.mutexes:
+      self.next_handle = (self.next_handle + 1) & handle_max
+    return pack(encoded_format, self.next_handle)
+
+  @p11_callback
+  def create(self, handle_ptr):
+    handle = self.find_free_handle()
+    self.mutexes[handle] = Mutex(handle)
+    handle_ptr[0] = self.mutexes[handle].encoded
+
+  @p11_callback
+  def destroy(self, handle):
+    del self.mutexes[handle[:encoded_length]]
+
+  @p11_callback
+  def lock(self, handle):
+    self.mutexes[handle[:encoded_length]].lock.acquire()
+
+  @p11_callback
+  def unlock(self, handle):
+    self.mutexes[handle[:encoded_length]].lock.release()
diff --git a/cryptech/py11/prototypes.py b/cryptech/py11/prototypes.py
new file mode 100644
index 0000000..7951515
--- /dev/null
+++ b/cryptech/py11/prototypes.py
@@ -0,0 +1,85 @@
+# An attempt at a Python interface to PKCS 11 using the scary ctypes
+# module from the Python standard library.
+
+from ctypes      import *
+from .types      import *
+
+# Prototypes for the PKCS #11 public functions.
+#
+# We don't bother implementing C_GetFunctionList(), because it would
+# be extremely tedious and it's not all that useful to us in Python.
+# Instead, we emulate its behavior in the PKCS11 class.
+
+Prototypes = dict(
+  C_Initialize           = [CK_VOID_PTR],
+  C_Finalize             = [CK_VOID_PTR],
+  C_GetInfo              = [CK_INFO_PTR],
+# C_GetFunctionList      = [CK_FUNCTION_LIST_PTR_PTR],
+  C_GetSlotList          = [CK_BBOOL, CK_SLOT_ID_PTR, CK_ULONG_PTR],
+  C_GetSlotInfo          = [CK_SLOT_ID, CK_SLOT_INFO_PTR],
+  C_GetTokenInfo         = [CK_SLOT_ID, CK_TOKEN_INFO_PTR],
+  C_GetMechanismList     = [CK_SLOT_ID, CK_MECHANISM_TYPE_PTR, CK_ULONG_PTR],
+  C_GetMechanismInfo     = [CK_SLOT_ID, CK_MECHANISM_TYPE, CK_MECHANISM_INFO_PTR],
+  C_InitToken            = [CK_SLOT_ID, CK_UTF8CHAR_PTR, CK_ULONG, CK_UTF8CHAR_PTR],
+  C_InitPIN              = [CK_SESSION_HANDLE, CK_UTF8CHAR_PTR, CK_ULONG],
+  C_SetPIN               = [CK_SESSION_HANDLE, CK_UTF8CHAR_PTR, CK_ULONG, CK_UTF8CHAR_PTR, CK_ULONG],
+  C_OpenSession          = [CK_SLOT_ID, CK_FLAGS, CK_VOID_PTR, CK_NOTIFY, CK_SESSION_HANDLE_PTR],
+  C_CloseSession         = [CK_SESSION_HANDLE],
+  C_CloseAllSessions     = [CK_SLOT_ID],
+  C_GetSessionInfo       = [CK_SESSION_HANDLE, CK_SESSION_INFO_PTR],
+  C_GetOperationState    = [CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG_PTR],
+  C_SetOperationState    = [CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG, CK_OBJECT_HANDLE, CK_OBJECT_HANDLE],
+  C_Login                = [CK_SESSION_HANDLE, CK_USER_TYPE, CK_UTF8CHAR_PTR, CK_ULONG],
+  C_Logout               = [CK_SESSION_HANDLE],
+  C_CreateObject         = [CK_SESSION_HANDLE, CK_ATTRIBUTE_PTR, CK_ULONG, CK_OBJECT_HANDLE_PTR],
+  C_CopyObject           = [CK_SESSION_HANDLE, CK_OBJECT_HANDLE, CK_ATTRIBUTE_PTR, CK_ULONG, CK_OBJECT_HANDLE_PTR],
+  C_DestroyObject        = [CK_SESSION_HANDLE, CK_OBJECT_HANDLE],
+  C_GetObjectSize        = [CK_SESSION_HANDLE, CK_OBJECT_HANDLE, CK_ULONG_PTR],
+  C_GetAttributeValue    = [CK_SESSION_HANDLE, CK_OBJECT_HANDLE, CK_ATTRIBUTE_PTR, CK_ULONG],
+  C_SetAttributeValue    = [CK_SESSION_HANDLE, CK_OBJECT_HANDLE, CK_ATTRIBUTE_PTR, CK_ULONG],
+  C_FindObjectsInit      = [CK_SESSION_HANDLE, CK_ATTRIBUTE_PTR, CK_ULONG],
+  C_FindObjects          = [CK_SESSION_HANDLE, CK_OBJECT_HANDLE_PTR, CK_ULONG, CK_ULONG_PTR],
+  C_FindObjectsFinal     = [CK_SESSION_HANDLE],
+  C_EncryptInit          = [CK_SESSION_HANDLE, CK_MECHANISM_PTR, CK_OBJECT_HANDLE],
+  C_Encrypt              = [CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG, CK_BYTE_PTR, CK_ULONG_PTR],
+  C_EncryptUpdate        = [CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG, CK_BYTE_PTR, CK_ULONG_PTR],
+  C_EncryptFinal         = [CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG_PTR],
+  C_DecryptInit          = [CK_SESSION_HANDLE, CK_MECHANISM_PTR, CK_OBJECT_HANDLE],
+  C_Decrypt              = [CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG, CK_BYTE_PTR, CK_ULONG_PTR],
+  C_DecryptUpdate        = [CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG, CK_BYTE_PTR, CK_ULONG_PTR],
+  C_DecryptFinal         = [CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG_PTR],
+  C_DigestInit           = [CK_SESSION_HANDLE, CK_MECHANISM_PTR],
+  C_Digest               = [CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG, CK_BYTE_PTR, CK_ULONG_PTR],
+  C_DigestUpdate         = [CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG],
+  C_DigestKey            = [CK_SESSION_HANDLE, CK_OBJECT_HANDLE],
+  C_DigestFinal          = [CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG_PTR],
+  C_SignInit             = [CK_SESSION_HANDLE, CK_MECHANISM_PTR, CK_OBJECT_HANDLE],
+  C_Sign                 = [CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG, CK_BYTE_PTR, CK_ULONG_PTR],
+  C_SignUpdate           = [CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG],
+  C_SignFinal            = [CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG_PTR],
+  C_SignRecoverInit      = [CK_SESSION_HANDLE, CK_MECHANISM_PTR, CK_OBJECT_HANDLE],
+  C_SignRecover          = [CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG, CK_BYTE_PTR, CK_ULONG_PTR],
+  C_VerifyInit           = [CK_SESSION_HANDLE, CK_MECHANISM_PTR, CK_OBJECT_HANDLE],
+  C_Verify               = [CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG, CK_BYTE_PTR, CK_ULONG],
+  C_VerifyUpdate         = [CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG],
+  C_VerifyFinal          = [CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG],
+  C_VerifyRecoverInit    = [CK_SESSION_HANDLE, CK_MECHANISM_PTR, CK_OBJECT_HANDLE],
+  C_VerifyRecover        = [CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG, CK_BYTE_PTR, CK_ULONG_PTR],
+  C_DigestEncryptUpdate  = [CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG, CK_BYTE_PTR, CK_ULONG_PTR],
+  C_DecryptDigestUpdate  = [CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG, CK_BYTE_PTR, CK_ULONG_PTR],
+  C_SignEncryptUpdate    = [CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG, CK_BYTE_PTR, CK_ULONG_PTR],
+  C_DecryptVerifyUpdate  = [CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG, CK_BYTE_PTR, CK_ULONG_PTR],
+  C_GenerateKey          = [CK_SESSION_HANDLE, CK_MECHANISM_PTR, CK_ATTRIBUTE_PTR, CK_ULONG, CK_OBJECT_HANDLE_PTR],
+  C_GenerateKeyPair      = [CK_SESSION_HANDLE, CK_MECHANISM_PTR, CK_ATTRIBUTE_PTR, CK_ULONG,
+                            CK_ATTRIBUTE_PTR, CK_ULONG, CK_OBJECT_HANDLE_PTR, CK_OBJECT_HANDLE_PTR],
+  C_WrapKey              = [CK_SESSION_HANDLE, CK_MECHANISM_PTR, CK_OBJECT_HANDLE, CK_OBJECT_HANDLE,
+                            CK_BYTE_PTR, CK_ULONG_PTR],
+  C_UnwrapKey            = [CK_SESSION_HANDLE, CK_MECHANISM_PTR, CK_OBJECT_HANDLE, CK_BYTE_PTR, CK_ULONG,
+                            CK_ATTRIBUTE_PTR, CK_ULONG, CK_OBJECT_HANDLE_PTR],
+  C_DeriveKey            = [CK_SESSION_HANDLE, CK_MECHANISM_PTR, CK_OBJECT_HANDLE, CK_ATTRIBUTE_PTR, CK_ULONG,
+                            CK_OBJECT_HANDLE_PTR],
+  C_SeedRandom           = [CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG],
+  C_GenerateRandom       = [CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG],
+  C_GetFunctionStatus    = [CK_SESSION_HANDLE],
+  C_CancelFunction       = [CK_SESSION_HANDLE],
+  C_WaitForSlotEvent     = [CK_FLAGS, CK_SLOT_ID_PTR, CK_VOID_PTR])
diff --git a/cryptech/py11/types.py b/cryptech/py11/types.py
new file mode 100644
index 0000000..4d0b279
--- /dev/null
+++ b/cryptech/py11/types.py
@@ -0,0 +1,180 @@
+# An attempt at a Python interface to PKCS 11 using the scary ctypes
+# module from the Python standard library.
+
+from ctypes import *
+
+# This code is derived from the RSA PKCS #11 C header files, which say:
+#
+# License to copy and use this software is granted provided that it is
+# identified as "RSA Security Inc. PKCS #11 Cryptographic Token Interface
+# (Cryptoki)" in all material mentioning or referencing this software.
+#
+# License is also granted to make and use derivative works provided that
+# such works are identified as "derived from the RSA Security Inc. PKCS #11
+# Cryptographic Token Interface (Cryptoki)" in all material mentioning or
+# referencing the derived work.
+#
+# RSA Security Inc. makes no representations concerning either the
+# merchantability of this software or the suitability of this software for
+# any particular purpose. It is provided "as is" without express or implied
+# warranty of any kind.
+
+# This is not a complete set of PKCS #11 types, because the full set
+# with all the optional mechanisms is tediously long and each
+# structure type requires hand conversion.  Goal at the moment is to
+# cover stuff we care about in the base specification.  Add other
+# mechanism-specific stuff later as needed.
+
+# Mapping beween C and Python at the lowest level isn't perfect
+# because characters are integer types in C while they're strings in
+# Python.  It looks like we want the string handling in most cases
+# other than CK_BBOOL and CK_VERSION, map lowest-level PKCS #11 types
+# accordingly.
+
+CK_BYTE                                 = c_char
+CK_CHAR                                 = CK_BYTE
+CK_UTF8CHAR                             = CK_BYTE
+CK_BBOOL                                = c_ubyte
+CK_ULONG                                = c_ulong
+CK_LONG                                 = c_long
+CK_FLAGS                                = CK_ULONG
+CK_VOID_PTR                             = POINTER(c_char)
+
+CK_BYTE_PTR                             = POINTER(CK_BYTE)
+CK_CHAR_PTR                             = POINTER(CK_CHAR)
+CK_UTF8CHAR_PTR                         = POINTER(CK_UTF8CHAR)
+CK_ULONG_PTR                            = POINTER(CK_ULONG)
+CK_VOID_PTR_PTR                         = POINTER(CK_VOID_PTR)
+
+class CK_VERSION (Structure):
+  _fields_ = [("major",                 c_ubyte),
+              ("minor",                 c_ubyte)]
+
+CK_VERSION_PTR                          = POINTER(CK_VERSION)
+
+class CK_INFO (Structure):
+  _fields_ = [("cryptokiVersion",       CK_VERSION),
+              ("manufacturerID",        CK_UTF8CHAR * 32),
+              ("flags",                 CK_FLAGS),
+              ("libraryDescription",    CK_UTF8CHAR * 32),
+              ("libraryVersion",        CK_VERSION)]
+
+CK_INFO_PTR                             = POINTER(CK_INFO)
+
+CK_NOTIFICATION                         = CK_ULONG
+
+CK_SLOT_ID                              = CK_ULONG
+
+CK_SLOT_ID_PTR                          = POINTER(CK_SLOT_ID)
+
+class CK_SLOT_INFO (Structure):
+  _fields_ = [("slotDescription",       CK_UTF8CHAR * 64),
+              ("manufacturerID",        CK_UTF8CHAR * 32),
+              ("flags",                 CK_FLAGS),
+              ("hardwareVersion",       CK_VERSION),
+              ("firmwareVersion",       CK_VERSION)]
+
+CK_SLOT_INFO_PTR                        = POINTER(CK_SLOT_INFO)
+
+class CK_TOKEN_INFO (Structure):
+  _fields_ = [("label",                 CK_UTF8CHAR * 32),
+              ("manufacturerID",        CK_UTF8CHAR * 32),
+              ("model",                 CK_UTF8CHAR * 16),
+              ("serialNumber",          CK_CHAR * 16),
+              ("flags",                 CK_FLAGS),
+              ("ulMaxSessionCount",	CK_ULONG),
+              ("ulSessionCount",	CK_ULONG),
+              ("ulMaxRwSessionCount",	CK_ULONG),
+              ("ulRwSessionCount",	CK_ULONG),
+              ("ulMaxPinLen",           CK_ULONG),
+              ("ulMinPinLen",           CK_ULONG),
+              ("ulTotalPublicMemory",	CK_ULONG),
+              ("ulFreePublicMemory",	CK_ULONG),
+              ("ulTotalPrivateMemory",	CK_ULONG),
+              ("ulFreePrivateMemory",	CK_ULONG),
+              ("hardwareVersion",	CK_VERSION),
+              ("firmwareVersion",	CK_VERSION),
+              ("utcTime",               CK_CHAR * 16)]
+
+CK_TOKEN_INFO_PTR                       = POINTER(CK_TOKEN_INFO)
+
+CK_SESSION_HANDLE                       = CK_ULONG
+
+CK_SESSION_HANDLE_PTR                   = POINTER(CK_SESSION_HANDLE)
+
+CK_USER_TYPE                            = CK_ULONG
+
+CK_STATE                                = CK_ULONG
+
+class CK_SESSION_INFO (Structure):
+  _fields_ = [("slotID",                CK_SLOT_ID),
+              ("state",                 CK_STATE),
+              ("flags",                 CK_FLAGS),
+              ("ulDeviceError",         CK_ULONG)]
+
+CK_SESSION_INFO_PTR                     = POINTER(CK_SESSION_INFO)
+
+CK_OBJECT_HANDLE                        = CK_ULONG
+
+CK_OBJECT_HANDLE_PTR                    = POINTER(CK_OBJECT_HANDLE)
+
+CK_OBJECT_CLASS                         = CK_ULONG
+
+CK_OBJECT_CLASS_PTR                     = POINTER(CK_OBJECT_CLASS)
+
+CK_HW_FEATURE_TYPE                      = CK_ULONG
+
+CK_KEY_TYPE                             = CK_ULONG
+
+CK_CERTIFICATE_TYPE                     = CK_ULONG
+
+CK_ATTRIBUTE_TYPE                       = CK_ULONG
+
+class CK_ATTRIBUTE (Structure):
+  _fields_ = [("type",                  CK_ATTRIBUTE_TYPE),
+              ("pValue",                CK_VOID_PTR),
+              ("ulValueLen",            CK_ULONG)]
+
+CK_ATTRIBUTE_PTR                        = POINTER(CK_ATTRIBUTE)
+
+class CK_DATE (Structure):
+  _fields_ = [("year",                  CK_CHAR * 4),
+              ("month",                 CK_CHAR * 2),
+              ("day",                   CK_CHAR * 2)]
+
+CK_MECHANISM_TYPE                       = CK_ULONG
+
+CK_MECHANISM_TYPE_PTR                   = POINTER(CK_MECHANISM_TYPE)
+
+class CK_MECHANISM (Structure):
+  _fields_ = [("mechanism",             CK_MECHANISM_TYPE),
+              ("pParameter",            CK_VOID_PTR),
+              ("ulParameterLen",        CK_ULONG)]
+
+CK_MECHANISM_PTR                        = POINTER(CK_MECHANISM)
+
+class CK_MECHANISM_INFO (Structure):
+  _fields_ = [("ulMinKeySize",          CK_ULONG),
+              ("ulMaxKeySize",          CK_ULONG),
+              ("flags",                 CK_FLAGS)]
+
+CK_MECHANISM_INFO_PTR                   = POINTER(CK_MECHANISM_INFO)
+
+CK_RV                                   = CK_ULONG
+
+CK_NOTIFY                               = CFUNCTYPE(CK_RV, CK_SESSION_HANDLE, CK_NOTIFICATION, CK_VOID_PTR)
+
+CK_CREATEMUTEX                          = CFUNCTYPE(CK_RV, CK_VOID_PTR_PTR)
+CK_DESTROYMUTEX                         = CFUNCTYPE(CK_RV, CK_VOID_PTR)
+CK_LOCKMUTEX                            = CFUNCTYPE(CK_RV, CK_VOID_PTR)
+CK_UNLOCKMUTEX                          = CFUNCTYPE(CK_RV, CK_VOID_PTR)
+
+class CK_C_INITIALIZE_ARGS (Structure):
+  _fields_ = [("CreateMutex",           CK_CREATEMUTEX),
+              ("DestroyMutex",          CK_DESTROYMUTEX),
+              ("LockMutex",             CK_LOCKMUTEX),
+              ("UnlockMutex",           CK_UNLOCKMUTEX),
+              ("flags",                 CK_FLAGS),
+              ("pReserved",             CK_VOID_PTR)]
+
+CK_C_INITIALIZE_ARGS_PTR                = POINTER(CK_C_INITIALIZE_ARGS)