mikofski

import ast
import math

SAFE_FX = {
    'exp': math.exp,
}

SAFE_NODES = set(
    (ast.Expression,
    ast.Num,

mikofski

import ast

allowed_functions = set([
    #math library
    'acos', 'acosh', 'asin', 'asinh', 'atan', 'atan2', 'atanh',
    'ceil', 'copysign', 'cos', 'cosh', 'degrees', 'e', 'erf',
    'erfc', 'exp', 'expm1', 'fabs', 'factorial', 'floor', 'fmod',
    'frexp', 'fsum', 'gamma', 'hypot', 'isinf', 'isnan', 'ldexp',
    'lgamma', 'log', 'log10', 'log1p', 'modf', 'pi', 'pow', 'radians',
    'sin', 'sinh', 'sqrt', 'tan', 'tanh', 'trunc',

mikofski

#! /usr/bin/env python
# -*- coding: utf-8 -*-

"""
`Topological sort by Kahn (1962) on Wikipedia
<http://en.wikipedia.org/wiki/Topological_sorting>`_
L ← Empty list that will contain the sorted elements
S ← Set of all nodes with no incoming edges
while S is non-empty do
    remove a node n from S

mikofski

mikofski

classdef air < handle
    % AIR Thermal-physical properties of air at 1 atm between temperatures
    %   of 200 K and 350 K.
    % Mark Mikofski
    % Version 1-0, 2010-10-29
    properties
        description = 'air at 1 atm between 200 and 350 K'
    end
    properties
        Temp

mikofski

function [p,S,mu] = polyfitZero(x,y,degree)
% POLYFITZERO Fit polynomial to data, forcing y-intercept to zero.
%   P = POLYFITZERO(X,Y,N) is similar POLYFIT(X,Y,N) except that the
%   y-intercept is forced to zero, i.e. P(N) = 0. In the same way as
%   POLYFIT, the coefficients, P(1:N-1), fit the data Y best in the least-
%   squares sense. You can also use Y = POLYVAL(PZERO,X) to evaluate the
%   polynomial because the output is the same as POLYFIT.
%
%   [P,S,MU] = POLYFITZERO() Return structure, S, similar to POLYFIT for use
%   with POLYVAL to calculate error estimates of predictions with P.

mikofski

%% initialize workspace
close('all'),clear('all'),clc
rmdir('keys','s') % delete old keys
%% test encryption
PANGRAM = 'The quick brown fox jumped over the lazy dog.';
EncryptionUtil.testJschSECSH(PANGRAM) % run test
%% make SSH keys in workspace
keyFactory = java.security.KeyFactory.getInstance('RSA'); % make a key factory
% read public OpenSSH key
[keyln, totlines] = EncryptionUtil.readJschKeyFile('keys/publicJschSECSH.key',7);

mikofski

static KeyPair OpenSSH2JavaKeyPairDemo(InputStream pub, InputStream pvt)
    throws IOException, GeneralSecurityException
  {
    KeyFactory f = KeyFactory.getInstance("RSA");

    RSAPublicKeySpec pubspec = decodeRSAPublicSSH(readAllBase64Bytes(pub));
    RSAPrivateCrtKeySpec pvtspec = decodeRSAPrivatePKCS1(readAllBase64Bytes(pvt));

    return new KeyPair(f.generatePublic(pubspec), f.generatePrivate(pvtspec));
  }

mikofski

#! /usr/bin/env python

"""
Python metaclasses
==================

A metaclass is a class factory; metaclasses serve two purposes:

1. replace ``type`` as the base class metatype for classes with the
   ``__metaclass__`` attribute

mikofski

#! /usr/bin/env python

import numpy as np
from datetime import datetime, time, timedelta
import pytz

class Timeseries(object):
    def __init__(self, x, t):
        self.x = np.array(x)
        self.t = np.array(t,dtype='datetime64[s]')