Created
January 8, 2020 19:22
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Implementation of token scnanning from GitHub
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POST /your/token/endpoint HTTP/1.1 | |
Host: yourhost.com | |
User-Agent: curl/7.54.0 | |
Accept: */* | |
Content-Type: application/json | |
GITHUB-PUBLIC-KEY-IDENTIFIER: 90a421169f0a406205f1563a953312f0be898d3c7b6c06b681aa86a874555f4a | |
GITHUB-PUBLIC-KEY-SIGNATURE: MEQCIAfgjgz6Ou/3DXMYZBervz1TKCHFsvwMcbuJhNZse622AiAG86/cku2XdcmFWNHl2WSJi2fkE8t+auvB24eURaOd2A== | |
[{"type":"github_oauth_token","token":"cb4985f91f740272c0234202299f43808034d7f5","url":" https://github.com/github/faketestrepo/blob/b0dd59c0b500650cacd4551ca5989a6194001b10/production.env"}] |
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require 'openssl' | |
require 'net/http' | |
require 'uri' | |
require 'json' | |
require 'base64' | |
payload = <<-EOL | |
[{"type":"github_oauth_token","token":"cb4985f91f740272c0234202299f43808034d7f5","url":" https://github.com/github/faketestrepo/blob/b0dd59c0b500650cacd4551ca5989a6194001b10/production.env"}] | |
EOL | |
# Get rid of the trailing newline from the heredoc payload | |
payload.chomp! | |
signature = "MEQCIAfgjgz6Ou/3DXMYZBervz1TKCHFsvwMcbuJhNZse622AiAG86/cku2XdcmFWNHl2WSJi2fkE8t+auvB24eURaOd2A==" | |
key_id = "90a421169f0a406205f1563a953312f0be898d3c7b6c06b681aa86a874555f4a" | |
url = URI.parse('https://api.github.com/meta/public_keys/token_scanning') | |
request = Net::HTTP::Get.new(url.path) | |
http = Net::HTTP.new(url.host, url.port) | |
http.use_ssl = (url.scheme == "https") | |
response = http.request(request) | |
parsed_response = JSON.parse(response.body) | |
current_key_object = parsed_response["public_keys"].find { |key| key["key_identifier"] == key_id } | |
current_key = current_key_object["key"] | |
openssl_key = OpenSSL::PKey::EC.new(current_key) | |
puts openssl_key.verify(OpenSSL::Digest::SHA256.new, Base64.decode64(signature), payload) |
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{ | |
"public_keys": [ | |
{ | |
"key_identifier": "90a421169f0a406205f1563a953312f0be898d3c7b6c06b681aa86a874555f4a", | |
"key": "-----BEGIN PUBLIC KEY-----\nMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE9MJJHnMfn2+H4xL4YaPDA4RpJqUq\nkCmRCBnYERxZanmcpzQSXs1X/AljlKkbJ8qpVIW4clayyef9gWhFbNHWAA==\n-----END PUBLIC KEY-----\n", | |
"is_current": true | |
} | |
] | |
} |
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