add enterprise to project list

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Michael Zhang 2021-08-03 01:52:06 -05:00
parent eb2bfd99f0
commit 2b6f2c76ef
Signed by: michael
GPG key ID: BDA47A31A3C8EE6B
2 changed files with 8 additions and 35 deletions

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@ -304,46 +304,13 @@ Let's walk through each of the ciphers and algorithms we're going to need one mo
#### Naive Elliptical Curve Implementation #### Naive Elliptical Curve Implementation
Since many of these algorithms deal with elliptic curves, I'm going to start with some math utilities that we'll need later on. Honestly wish Python had a standardized Point class but here we go:
```py
class Point:
def __init__(self, x, y): self.x, self.y = x, y
def __str__(self): return f"({self.x}, {self.y})"
```
#### secp256r1 #### secp256r1
The curve is defined using the equation `y^2 = x^3 + ax + b mod p`. The curve is defined using the equation `y^2 = x^3 + ax + b mod p`.
```py ```py
class secp256r1: # https://hyperelliptic.org/EFD/g1p/auto-shortw.html
p = (2 ** 224) * (2 ** 32 - 1) + 2 ** 192+ 2 ** 96 - 1
a = 0xFFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFC
b = 0x5AC635D8AA3A93E7B3EBBD55769886BC651D06B0CC53B0F63BCE3C3E27D2604B
gx = 0x6B17D1F2E12C4247F8BCE6E563A440F277037D812DEB33A0F4A13945D898C296
gy = 0x4FE342E2FE1A7F9B8EE7EB4A7C0F9E162BCE33576B315ECECBB6406837BF51F5
G = Point(gx, gy)
n = 0xFFFFFFFF00000000FFFFFFFFFFFFFFFFBCE6FAADA7179E84F3B9CAC2FC632551
def __init__(self): pass
def add(a, b):
if a == b: return secp256r1.double(a)
l = (b.y - a.y) * pow(b.x - a.x, -1, secp256r1.p)
x = (pow(l, 2, secp256r1.p) - a.x - b.x) % secp256r1.p
y = (l * (a.x - x) - a.y) % secp256r1.p
return Point(x, y)
def double(p):
l = (3 * p.x * p.x + secp256r1.a) * pow(2 * p.y, -1, secp256r1.p)
x = (pow(l, 2, secp256r1.p) - 2 * p.x) % secp256r1.p
y = (l * (p.x - x) - p.y) % secp256r1.p
return Point(x, y)
def mul(p, s):
t = None
while s:
b = s & 1
if b: t = p if t is None else secp256r1.add(t, p)
s >>= 1
return t
``` ```
```py ```py

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@ -13,6 +13,12 @@
status: incomplete status: incomplete
langs: ["coq", "ocaml"] langs: ["coq", "ocaml"]
- name: Enterprise
link: https://git.mzhang.io/michael/enterprise
desc: Statically-compiled interactive programs like Svelte.
status: prototype
langs: ["rust"]
- category: Learning Projects - category: Learning Projects
desc: Projects that I'm using to learn more about particular technologies. desc: Projects that I'm using to learn more about particular technologies.
projects: projects: