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This commit is contained in:
xAnavrins 2019-05-06 01:48:31 -04:00
parent 5296e134a6
commit 10fca52290
3 changed files with 11 additions and 9 deletions
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4
sys/apis/crypto/chacha20.lua
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@ -1,8 +1,8 @@
-- Chacha20 cipher in ComputerCraft -- Chacha20 cipher in ComputerCraft
-- By Anavrins -- By Anavrins
local sha2 = require("crypto.sha2") local sha2 = require('crypto.sha2')
local util = require("util") local util = require('util')
local Crypto = {} local Crypto = {}
local ROUNDS = 20 -- Adjust this for speed tradeoff local ROUNDS = 20 -- Adjust this for speed tradeoff

2
sys/apis/crypto/ecc/ecc.lua
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@ -1,4 +1,4 @@
local fq = require('crypto.ecc.fp') local fq = require('crypto.ecc.fq')
local elliptic = require('crypto.ecc.elliptic') local elliptic = require('crypto.ecc.elliptic')
local sha256 = require('crypto.sha2') local sha256 = require('crypto.sha2')

14
sys/apis/crypto/sha2.lua
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@ -1,8 +1,6 @@
-- SHA-256, HMAC and PBKDF2 functions in ComputerCraft -- SHA-256, HMAC and PBKDF2 functions in ComputerCraft
-- By Anavrins -- By Anavrins
local sha2 = {}
local mod32 = 2^32 local mod32 = 2^32
local band = bit32 and bit32.band or bit.band local band = bit32 and bit32.band or bit.band
local bnot = bit32 and bit32.bnot or bit.bnot local bnot = bit32 and bit32.bnot or bit.bnot
@ -121,7 +119,7 @@ local function toBytes(t, n)
return setmetatable(b, mt) return setmetatable(b, mt)
end end
function sha2.digest(data) local function digest(data)
local data = data or "" local data = data or ""
data = type(data) == "table" and {upack(data)} or {tostring(data):byte(1,-1)} data = type(data) == "table" and {upack(data)} or {tostring(data):byte(1,-1)}
@ -131,7 +129,7 @@ function sha2.digest(data)
return toBytes(C, 8) return toBytes(C, 8)
end end
function sha2.hmac(data, key) local function hmac(data, key)
local data = type(data) == "table" and {upack(data)} or {tostring(data):byte(1,-1)} local data = type(data) == "table" and {upack(data)} or {tostring(data):byte(1,-1)}
local key = type(key) == "table" and {upack(key)} or {tostring(key):byte(1,-1)} local key = type(key) == "table" and {upack(key)} or {tostring(key):byte(1,-1)}
@ -162,7 +160,7 @@ function sha2.hmac(data, key)
return digest(padded_key) return digest(padded_key)
end end
function sha2.pbkdf2(pass, salt, iter, dklen) local function pbkdf2(pass, salt, iter, dklen)
local salt = type(salt) == "table" and salt or {tostring(salt):byte(1,-1)} local salt = type(salt) == "table" and salt or {tostring(salt):byte(1,-1)}
local hashlen = 32 local hashlen = 32
local dklen = dklen or 32 local dklen = dklen or 32
@ -192,4 +190,8 @@ function sha2.pbkdf2(pass, salt, iter, dklen)
return setmetatable(out, mt) return setmetatable(out, mt)
end end
return sha2 return {
digest = digest,
hmac = hmac,
pbkdf2 = pbkdf2,
}