Jan [Yann] fafk

## toy_rsa.py
import math

def lcm(a, b):
    return abs(a*b) // math.gcd(a, b)

def egcd(a, b):
    if a == 0:
        return (b, 0, 1)
    else:
        g, y, x = egcd(b % a, a)

## Crude Bitcoin address validation
export function validateBtcAddress(address) {
  if (typeof address !== 'string') return false;

  if (address.length < 26 || address.length > 35) return false;
  return /^1/.test(address) || /^3/.test(address) || /^bc1/.test(address);
}

## eth_faucet
0x05AD1f8389a77c1968bb8b40052af4a7Ba4A0cF3
	import math

	def lcm(a, b):
	return abs(a*b) // math.gcd(a, b)

	def egcd(a, b):
	if a == 0:
	return (b, 0, 1)
	else:
	g, y, x = egcd(b % a, a)
	export function validateBtcAddress(address) {
	if (typeof address !== 'string') return false;

	if (address.length < 26 \|\| address.length > 35) return false;
	return /^1/.test(address) \|\| /^3/.test(address) \|\| /^bc1/.test(address);
	}