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by abc126589
2201 days ago
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It's in-house. A license has some info tied to the user (which ultimately has to be the Twitter user connected via Twitter). Then all that is signed with a private key ECDSA. The app has the public key and can verify the signature. Many libraries are available for handling cryptographic signatures. So basically a license is public info, the app enforces that the logged in user must match the user in the license. |
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