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Updated QR Codes (markdown)

Dominik Schürmann 2017-02-05 12:55:51 +01:00
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QR-Codes.md

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## QR Code format
* QR Codes contain an Uri with the ``openpgp4fpr`` scheme and the full fingerprint, such as ``OPENPGP4FPR:73EE2314F65FA92EC2390D3A718C070100012282``
* QR Codes contain an Uri with the ``openpgp4fpr`` scheme and the full OpenPGP v4 key fingerprint, such as ``OPENPGP4FPR:73EE2314F65FA92EC2390D3A718C070100012282``.
* The Uri is fully uppercase to use the more efficient [alphanumeric encoding](https://en.wikipedia.org/wiki/QR_code#Encoding) that does not support lowercase letters.
* Only full fingerprints are supported, not key IDs. After scanning OpenKeychain allows for certification of keys and this is only secure with full fingerprints.
* OpenKeychain also supports opening ``openpgp4fpr`` Uris with full fingerprints via Android's ``android.intent.action.VIEW`` Intent
* Only full fingerprints are supported, not key IDs. After scanning, OpenKeychain allows for certification of keys and this is only secure with full fingerprints.
* OpenKeychain also supports opening ``openpgp4fpr`` Uris with full fingerprints via Android's ``android.intent.action.VIEW`` Intent.
## About `openpgp4fpr` (copied from [effigies/openpgp4info](https://github.com/effigies/openpgp4info))