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perf(plugins/jwt): use string.buffer to replace table.concat #12075

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merged 2 commits into from
Nov 23, 2023
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perf(plugins/jwt): use string.buffer to replace table.concat #12075

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refactor(plugins/jwt): use string.buffer to replace table.concat
chronolaw Nov 21, 2023
f87258f
clean
chronolaw Nov 21, 2023
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18 changes: 9 additions & 9 deletions kong/plugins/jwt/jwt_parser.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@

local json = require "cjson"
local b64 = require "ngx.base64"
local buffer = require "string.buffer"
local openssl_digest = require "resty.openssl.digest"
local openssl_hmac = require "resty.openssl.hmac"
local openssl_pkey = require "resty.openssl.pkey"
Expand All @@ -20,7 +21,6 @@ local time = ngx.time
local pairs = pairs
local error = error
local pcall = pcall
local concat = table.concat
local insert = table.insert
local unpack = unpack
local assert = assert
Expand Down Expand Up @@ -237,17 +237,17 @@ local function encode_token(data, key, alg, header)
end

local header = header or { typ = "JWT", alg = alg }
local segments = {
base64_encode(json.encode(header)),
base64_encode(json.encode(data))
}
local buf = buffer.new()

buf:put(base64_encode(json.encode(header))):put(".")
:put(base64_encode(json.encode(data)))

local signing_input = concat(segments, ".")
local signature = alg_sign[alg](signing_input, key)
local signature = alg_sign[alg](buf:tostring(), key)

segments[#segments+1] = base64_encode(signature)
buf:put(".")
:put(base64_encode(signature))

return concat(segments, ".")
return buf:get()
end


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