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blog/posts/privacy-pass.md
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@ -70,9 +70,9 @@ The organization then signs it, indicating you're a valid customer and you're al
Later, when you're presented with a request to authenticate as an active subscriber of PrivacyGuides+, you unwrap the envelope and discard it along with the carbon paper. You rewrap it in a new envelope with a window showing the signature and a different pseudonym, and the requester can then be sure that you're allowed to access PrivacyGuides+.
![A diagram showing an envelope being wrapped in carbon paper, transfered to an organization, then passing over a boundary representing the unlinkability between the two transactions. Then the envelope is unwrapped, put in a new envelope with a window showing the signature from the previous organization, and presented to a different organization.](../assets/images/privacy-pass/Blind_signatures.png)
![A diagram showing an envelope being wrapped in carbon paper, transfered to an organization, then passing over a boundary representing the unlinkability between the two transactions. Then the envelope is unwrapped, put in a new envelope with a window showing the signature from the previous organization, and presented to a different organization.](../assets/images/privacy-pass/blind-signatures.webp)
<small aria-hidden="true">Illustration: David Chaum</small>
<small aria-hidden="true">Illustration: [David Chaum](https://dl.acm.org/doi/pdf/10.1145/4372.4373)</small>
This system relies on the same strong cryptography that tried and true systems use, with the difference being the unlinkability between the credential issuer and the credential receiver.