wbamberg/browserid-field-guide — comment on commit 65b7cab3d465d2f8a4761c43f0f98411f25dac4d
File: why_browserid.html line 91
By ozten:

Technically the labels on the diagram might be misleading.
"2) User sends signed email address + certificate"
User sends an email address which has been cryptographically sealed with the certificate (or something like that, I'm not the crypto expert).