author | Kim Alvefur <zash@zash.se> |
Mon, 24 Feb 2020 01:24:25 +0100 | |
changeset 10664 | c4ded3be7cc0 |
child 11565 | d2f33b8fdc96 |
permissions | -rw-r--r-- |
10664
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
parents:
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1 |
local s_gsub = string.gsub; |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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local json = require "util.json"; |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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3 |
local hashes = require "util.hashes"; |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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local base64_encode = require "util.encodings".base64.encode; |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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local base64_decode = require "util.encodings".base64.decode; |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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|
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util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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local b64url_rep = { ["+"] = "-", ["/"] = "_", ["="] = "", ["-"] = "+", ["_"] = "/" }; |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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local function b64url(data) |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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return (s_gsub(base64_encode(data), "[+/=]", b64url_rep)); |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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end |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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local function unb64url(data) |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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return base64_decode(s_gsub(data, "[-_]", b64url_rep).."=="); |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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end |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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local static_header = b64url('{"alg":"HS256","typ":"JWT"}') .. '.'; |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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|
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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local function sign(key, payload) |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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18 |
local encoded_payload = json.encode(payload); |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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local signed = static_header .. b64url(encoded_payload); |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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local signature = hashes.hmac_sha256(key, signed); |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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return signed .. "." .. b64url(signature); |
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util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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end |
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util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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24 |
local jwt_pattern = "^(([A-Za-z0-9-_]+)%.([A-Za-z0-9-_]+))%.([A-Za-z0-9-_]+)$" |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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local function verify(key, blob) |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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local signed, bheader, bpayload, signature = string.match(blob, jwt_pattern); |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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27 |
if not signed then |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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return nil, "invalid-encoding"; |
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util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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end |
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util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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local header = json.decode(unb64url(bheader)); |
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util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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if not header or type(header) ~= "table" then |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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return nil, "invalid-header"; |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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elseif header.alg ~= "HS256" then |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
parents:
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return nil, "unsupported-algorithm"; |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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end |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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if b64url(hashes.hmac_sha256(key, signed)) ~= signature then |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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return false, "signature-mismatch"; |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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end |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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local payload, err = json.decode(unb64url(bpayload)); |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
parents:
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if err ~= nil then |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
parents:
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return nil, "json-decode-error"; |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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end |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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return true, payload; |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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end |
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util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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return { |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
parents:
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47 |
sign = sign; |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
parents:
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48 |
verify = verify; |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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}; |
c4ded3be7cc0
util.jwt: Basic JSON Web Token library supporting HS256 tokens
Kim Alvefur <zash@zash.se>
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