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certinfo: b0rked pubkey/signature algorithm with openssl>=1.0.2 #3706

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m6w6 opened this issue Mar 26, 2019 · 5 comments
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certinfo: b0rked pubkey/signature algorithm with openssl>=1.0.2 #3706

m6w6 opened this issue Mar 26, 2019 · 5 comments
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help wanted libcurl API TLS

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@m6w6
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m6w6 commented Mar 26, 2019

I did this

Retrieved CURLINFO_CERTINFO

I expected the following

Sane Public Key/Signature Algorithm entries.

Got instead

==========
Public Key Algorithm:    Signature Algorithm: sha256WithRSAEncryption
sha256WithRSAEncryption
==========

curl/libcurl version

master + openssl 1.1.1b

operating system

Linux

Testcase

https://gist.github.com/m6w6/7acc0943b024eee3bdc60df70d1f8e3e
@bagder bagder added the TLS label Mar 26, 2019
@bagder
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bagder commented Mar 26, 2019

Ugh. That's one of the dark magic parts of the OpenSSL APIs that I really don't understand much. But yeah, I can confirm that running your test code with openssl 1.0.2 returns a different output than with an openssl 1.1.1 build for me as well. 😕

@m6w6
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m6w6 commented Mar 26, 2019

Yeah, I tried to fix it, but that openssl API is, well, ugh

ngg added a commit to tresorit/curl that referenced this issue Jun 16, 2019
@ngg
openssl: fix pubkey/signature algorithm detection in certinfo
65642ea 
Certinfo gives the same result for all OpenSSL versions.
Also made printing RSA pubkeys consistent with older versions.

Fixes curl#3706
@ngg ngg mentioned this issue Jun 16, 2019
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ngg added a commit to tresorit/curl that referenced this issue Jun 16, 2019
@ngg
openssl: fix pubkey/signature algorithm detection in certinfo
a8dc1ec 
Certinfo gives the same result for all OpenSSL versions.
Also made printing RSA pubkeys consistent with older versions.

Fixes curl#3706
@bagder
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bagder commented Jun 17, 2019

@m6w6 can you confirm if #4030 fixes your case?

@m6w6
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m6w6 commented Jun 18, 2019

@m6w6 can you confirm if #4030 fixes your case?

Yes, it does!

@m6w6
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m6w6 commented Jun 18, 2019

Sorry, posted the output (now as expected) over at #4030

==========
Signature Algorithm:sha256WithRSAEncryption
==========
==========
Public Key Algorithm:id-ecPublicKey
==========
==========
Signature Algorithm:sha256WithRSAEncryption
==========
==========
Public Key Algorithm:rsaEncryption
==========

@bagder bagder closed this as completed in 6c2b7d4 Jun 18, 2019
@lock lock bot locked as resolved and limited conversation to collaborators Sep 16, 2019
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openssl: fix pubkey/signature algorithm detection in certinfo tresorit/curl
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@bagder @m6w6