unified receipt verification procedure

[vizvamitra]

Hello there. I have some questions about your unified receipts verification procedure.

Reading your gem's sources I've noticed that when the ItunesReceiptDecoder::Decode::UnifiedReceipt is being created you don't check (here) whether the certificates embedded into the receipt's pkcs7 container were issued by Apple.

Instead you've separated certificate validation to a #signature_valid? method. In this video at 19:00 a guy from Apple describes the signature verification procedure. I've implemented it in ruby, the code is listed in a comment below. The procedure you use in #signature_valid? method is different.

So my questions are:

1. Why you decided to separate certificate validation from signature verification?
2. What are the cases when one may want to parse a receipt issued not by Apple?
3. Is your certificate validation procedure safe? Did you ever have any issues with it? (I don't know much about cryptography 😞)

[vizvamitra]

def verify_signature(base64_encoded_receipt)
  cert = OpenSSL::X509::Certificate.new(root_cert)

  cert_store = OpenSSL::X509::Store.new
  cert_store.add_cert(cert)

  receipt = Base64.decode64(base64_encoded_receipt)

  begin
    signature = OpenSSL::PKCS7.new(receipt)
    # note that I don't use NOVERIFY flag here, so the entire
    # certificate chain will be verified against a CA store
    signature.verify([cert], cert_store, nil)
  rescue ArgumentError
    false
  end
end

# Certificate was downloaded from here:
# https://www.apple.com/certificateauthority/
def root_cert
  <<-CERT.gsub(/^\s*/m, '')
    -----BEGIN CERTIFICATE-----
    MIIEuzCCA6OgAwIBAgIBAjANBgkqhkiG9w0BAQUFADBiMQswCQYDVQQGEwJVUzET
    MBEGA1UEChMKQXBwbGUgSW5jLjEmMCQGA1UECxMdQXBwbGUgQ2VydGlmaWNhdGlv
    biBBdXRob3JpdHkxFjAUBgNVBAMTDUFwcGxlIFJvb3QgQ0EwHhcNMDYwNDI1MjE0
    MDM2WhcNMzUwMjA5MjE0MDM2WjBiMQswCQYDVQQGEwJVUzETMBEGA1UEChMKQXBw
    bGUgSW5jLjEmMCQGA1UECxMdQXBwbGUgQ2VydGlmaWNhdGlvbiBBdXRob3JpdHkx
    FjAUBgNVBAMTDUFwcGxlIFJvb3QgQ0EwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAw
    ggEKAoIBAQDkkakJH5HbHkdQ6wXtXnmELes2oldMVeyLGYne+Uts9QerIjAC6Bg+
    +FAJ039BqJj50cpmnCRrEdCju+QbKsMflZ56DKRHi1vUFjczy8QPTc4UadHJGXL1
    XQ7Vf1+b8iUDulWPTV0N8WQ1IxVLFVkds5T39pyez1C6wVhQZ48ItCD3y6wsIG9w
    tj8BMIy3Q88PnT3zK0koGsj+zrW5DtleHNbLPbU6rfQPDgCSC7EhFi501TwN22IW
    q6NxkkdTVcGvL0Gz+PvjcM3mo0xFfh9Ma1CWQYnEdGILEINBhzOKgbEwWOxaBDKM
    aLOPHd5lc/9nXmW8Sdh2nzMUZaF3lMktAgMBAAGjggF6MIIBdjAOBgNVHQ8BAf8E
    BAMCAQYwDwYDVR0TAQH/BAUwAwEB/zAdBgNVHQ4EFgQUK9BpR5R2Cf70a40uQKb3
    R01/CF4wHwYDVR0jBBgwFoAUK9BpR5R2Cf70a40uQKb3R01/CF4wggERBgNVHSAE
    ggEIMIIBBDCCAQAGCSqGSIb3Y2QFATCB8jAqBggrBgEFBQcCARYeaHR0cHM6Ly93
    d3cuYXBwbGUuY29tL2FwcGxlY2EvMIHDBggrBgEFBQcCAjCBthqBs1JlbGlhbmNl
    IG9uIHRoaXMgY2VydGlmaWNhdGUgYnkgYW55IHBhcnR5IGFzc3VtZXMgYWNjZXB0
    YW5jZSBvZiB0aGUgdGhlbiBhcHBsaWNhYmxlIHN0YW5kYXJkIHRlcm1zIGFuZCBj
    b25kaXRpb25zIG9mIHVzZSwgY2VydGlmaWNhdGUgcG9saWN5IGFuZCBjZXJ0aWZp
    Y2F0aW9uIHByYWN0aWNlIHN0YXRlbWVudHMuMA0GCSqGSIb3DQEBBQUAA4IBAQBc
    NplMLXi37Yyb3PN3m/J20ncwT8EfhYOFG5k9RzfyqZtAjizUsZAS2L70c5vu0mQP
    y3lPNNiiPvl4/2vIB+x9OYOLUyDTOMSxv5pPCmv/K/xZpwUJfBdAVhEedNO3iyM7
    R6PVbyTi69G3cN8PReEnyvFteO3ntRcXqNx+IjXKJdXZD9Zr1KIkIxH3oayPc4Fg
    xhtbCS+SsvhESPBgOJ4V9T0mZyCKM2r3DYLP3uujL/lTaltkwGMzd/c6ByxW69oP
    IQ7aunMZT7XZNn/Bh1XZp5m5MkL72NVxnn6hUrcbvZNCJBIqxw8dtk2cXmPIS4AX
    UKqK1drk/NAJBzewdXUh
    -----END CERTIFICATE-----
  CERT
end

[vizvamitra]

Also here is a receipt I've found somewhere in the internet with one of the embedded certificates outdated. You don't check the certificate chain, so both #verify and #signature_valid? will return true while the implementation suggested by Apple will fail:

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

[marcgreenstock]

Hi @vizvamitra,

Thanks for opening this issue. It was something I struggled with when I created this library.

The initial problem I had was related to expired apple certificates.

OpenSSL::PKCS7::NOVERIFY needs to be used to extract the payload, which includes the creation_date. If the certificate is expired, the verify method will fail.

This library should check the certificate chain and verify the certificate expiry in the context of the creation_date. I will look into this as soon as I can, but in the mean time please feel free to open a pull request, I appreciate any help I can get. Thanks!

[virusman]

@vizvamitra What does Apple validation server return when you check this receipt? I think an outdated certificate is not an issue if the signature was made before expiration. Receipts signed with the certificate that expired in 2016 should still be valid.