__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
+ """
+ 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
- @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
+ @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
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)
+ c_void_p,c_int,c_char_p)
libcrypto.PKCS5_PBKDF2_HMAC.restupe=c_int