"""
-low-level private/public keypair operation
+This module provides interface for low-level private/public keypair operation
PKey object of this module is wrapper around OpenSSL EVP_PKEY object.
"""
-This module provides interface for
from ctypes import c_char_p,c_void_p,byref,c_int,c_long, c_longlong, create_string_buffer,CFUNCTYPE,POINTER
from ctypescrypto import libcrypto
CALLBACK_FUNC=CFUNCTYPE(c_int,c_char_p,c_int,c_int,c_char_p)
def password_callback(buf,length,rwflag,u):
-"""
-Example password callback for private key. Assumes that
-password is store in the userdata parameter, so allows to pass password
-from constructor arguments to the libcrypto keyloading functions
-"""
+ """
+ Example password callback for private key. Assumes that
+ password is store in the userdata parameter, so allows to pass password
+ from constructor arguments to the libcrypto keyloading functions
+ """
cnt=len(u)
if length<cnt:
cnt=length
return str(b)
def exportpriv(self,format="PEM",password=None,cipher=None):
"""
- Returns public key as PEM or DER Structure.
+ Returns private key as PEM or DER Structure.
If password and cipher are specified, encrypts key
on given password, using given algorithm. Cipher must be
an ctypescrypto.cipher.CipherType object
raise NotImplementedError("Interactive password entry is not supported")
evp_cipher=cipher.cipher
if format == "PEM":
- r=libcrypto.PEM_write_bio_PrivateKey(b.bio,self.key,evp_cipher,_cb,
+ r=libcrypto.PEM_write_bio_PrivateKey(b.bio,self.key,evp_cipher,None,0,_cb,
password)
else:
if cipher is not None:
libcrypto.EVP_PKEY_verify.argtypes=(c_void_p,c_char_p,c_long,c_char_p,c_long)
libcrypto.EVP_PKEY_verify_init.restype=c_int
libcrypto.EVP_PKEY_verify_init.argtypes=(c_void_p,)
-libcrypto.PEM_write_bio_PrivateKey.argtypes=(c_void_p,c_void_p,CALLBACK_FUNC,c_char_p)
+libcrypto.PEM_write_bio_PrivateKey.argtypes=(c_void_p,c_void_p,c_void_p,c_char_p,c_int,CALLBACK_FUNC,c_char_p)
libcrypto.PEM_write_bio_PUBKEY.argtypes=(c_void_p,c_void_p)
libcrypto.i2d_PUBKEY_bio.argtypes=(c_void_p,c_void_p)
libcrypto.i2d_PrivateKey_bio.argtypes=(c_void_p,c_void_p)