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Package nss :: Module nss :: Class PK11SymKey
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Class PK11SymKey

object --+
         |
        PK11SymKey

Holds a hash, encryption or signing context for multi-part operations.
Instance Methods [hide private]
 
__init__(...)
x.__init__(...) initializes x; see x.__class__.__doc__ for signature
 
__repr__(x)
repr(x)
 
__str__(x)
str(x)		 
PK11SymKey
derive(mechanism, sec_param, target, operation, key_size)
:Parameters: mechanism : int key mechanism enumeration constant (CKM_*) sec_param : SecItem object or None mechanism parameters or None.		 
PK11SymKey
unwrap_sym_key(mechanism, sec_param, wrapped_key, target, operation, key_size)
:Parameters: mechanism : int key mechanism enumeration constant (CKM_*) sec_param : SecItem object or None mechanism parameters or None.		 
SecItem
wrap_sym_key(mechanism, sec_param, sym_key)
:Parameters: mechanism : int key mechanism enumeration constant (CKM_*) sec_param : SecItem object or None mechanism parameters or None.

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __setattr__, __sizeof__, __subclasshook__

Properties [hide private]
  key_data
key data
  key_length
key length
  mechanism
CK_MECHANISM_TYPE mechanism
  slot
slot

Inherited from object: __class__

Method Details [hide private]

__init__(...)
(Constructor)

  
x.__init__(...) initializes x; see x.__class__.__doc__ for signature
Overrides: object.__init__

__repr__(x)
(Representation operator)

  
repr(x)
Overrides: object.__repr__

__str__(x)
(Informal representation operator)

  
str(x)
Overrides: object.__str__

derive(mechanism, sec_param, target, operation, key_size)

  
:Parameters:
    mechanism : int
        key mechanism enumeration constant (CKM_*)
    sec_param : SecItem object or None
        mechanism parameters or None.
    target : int
        key mechanism enumeration constant (CKM_*)
    operation : int
        type of operation. A (CKA_*) constant
        (e.g. CKA_ENCRYPT, CKA_DECRYPT, CKA_SIGN, CKA_VERIFY, CKA_DIGEST)
    key_size : int
        key size.

Derive a new key from this key.
Return a key which can do exactly one operation, it is
ephemeral (session key).
Returns: 
PK11SymKey

unwrap_sym_key(mechanism, sec_param, wrapped_key, target, operation, key_size)

  
:Parameters:
    mechanism : int
        key mechanism enumeration constant (CKM_*)
    sec_param : SecItem object or None
        mechanism parameters or None.
    wrapped_key : SecItem object
        the symmetric key to unwrap
    target : int
        key mechanism enumeration constant (CKM_*)
    operation : int
        type of operation. A (CKA_*) constant
        (e.g. CKA_ENCRYPT, CKA_DECRYPT, CKA_SIGN, CKA_VERIFY, CKA_DIGEST)
    key_size : int
        key size.

Unwrap (decrypt) the supplied wrapped key.
Return the unwrapped key as a PK11SymKey.
Returns: 
PK11SymKey

wrap_sym_key(mechanism, sec_param, sym_key)

  
:Parameters:
    mechanism : int
        key mechanism enumeration constant (CKM_*)
    sec_param : SecItem object or None
        mechanism parameters or None.
    sym_key : PK11SymKey object
        the symmetric key to wrap

Wrap (encrypt) the supplied sym_key using the mechanism
and parameter. Return the wrapped key as a SecItem.
Returns: 
SecItem

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