Python 3 support for modules pbkdf2 pkey ec x509

[oss/ctypescrypto.git] / ctypescrypto / pbkdf2.py

diff --git a/ctypescrypto/pbkdf2.py b/ctypescrypto/pbkdf2.py
index c2e01bbe95de7e8dc5a53d31801e40366cd40ec3..2a2125af9f802b6532c3911d4f4cf7623aa0f29f 100644 (file)
--- a/ctypescrypto/pbkdf2.py
+++ b/ctypescrypto/pbkdf2.py
@@ -3,33 +3,38 @@ PKCS5 PBKDF2 function.
 
 """
 
-from ctypes import c_char_p,c_int, c_void_p, create_string_buffer
-from ctypescrypto import libcrypto
+from ctypes import c_char_p, c_int, c_void_p, create_string_buffer
+from ctypescrypto import libcrypto, chartype
 from ctypescrypto.digest import DigestType
+from ctypescrypto.exception import LibCryptoError
 
 __all__ = ['pbkdf2']
 
-def pbkdf2(password,salt,outlen,digesttype="sha1",iterations=2000):
-       """
-               Interface to PKCS5_PBKDF2_HMAC function
-               Parameters:
-                       
-                               @param password - password to derive key from
-                               @param salt - random salt to use for key derivation
-                               @param outlen - number of bytes to derive
-                               @param digesttype - name of digest to use to use (default sha1)
-                               @param iterations - number of iterations to use
+def pbkdf2(password, salt, outlen, digesttype="sha1", iterations=2000):
+    """
+    Interface to PKCS5_PBKDF2_HMAC function
+    Parameters:
 
-                               @returns outlen bytes of key material derived from password and salt
-       """
-       dt=DigestType(digesttype)
-       out=create_string_buffer(outlen)
-       res=libcrypto.PKCS5_PBKDF2_HMAC(password,len(password),salt,len(salt),
-               iterations,dt.digest,outlen,out)
-       if res<=0:
-               raise LibCryptoError("error computing PBKDF2")
-       return out.raw
+    @param password - password to derive key from
+    @param salt - random salt to use for key derivation
+    @param outlen - number of bytes to derive
+    @param digesttype - name of digest to use to use (default sha1)
+    @param iterations - number of iterations to use
 
-libcrypto.PKCS5_PBKDF2_HMAC.argtypes=(c_char_p,c_int,c_char_p,c_int,c_int,
-       c_void_p,c_int,c_char_p)
-libcrypto.PKCS5_PBKDF2_HMAC.restupe=c_int
+    @returns outlen bytes of key material derived from password and salt
+    """
+    dgst = DigestType(digesttype)
+    out = create_string_buffer(outlen)
+    if isinstance(password,chartype):
+        pwd = password.encode("utf-8")
+    else:
+        pwd = password
+    res = libcrypto.PKCS5_PBKDF2_HMAC(pwd, len(pwd), salt, len(salt),
+                                      iterations, dgst.digest, outlen, out)
+    if res <= 0:
+        raise LibCryptoError("error computing PBKDF2")
+    return out.raw
+
+libcrypto.PKCS5_PBKDF2_HMAC.argtypes = (c_char_p, c_int, c_char_p, c_int, c_int,
+                                        c_void_p, c_int, c_char_p)
+libcrypto.PKCS5_PBKDF2_HMAC.restupe = c_int