Proxy re-encryption

Posted on by David Vassallo

What is proxy re-encryption? Proxy re-encryption lets Alice send Bob a message (M) via a semi-trusted proxy, without revealing Alice's private key to either the proxy or Bob, and without revealing the secret message to the proxy. As Wikipedia puts it: "Proxy re-encryption schemes are cryptosystems which allow third parties (proxies) to alter a ciphertext … Continue reading Proxy re-encryption

Signing GMail Messages with the Estonian eID PKI Card (Part 1)

Posted on by David Vassallo

After reading several articles about the Estonian eID, such as this one: "I’m now an Estonian e-resident, but I still don’t know what to do with it" it becomes clear that there needs to be a bit more use cases around the eID ecosystem. Cyrus Farivar (the author of the above article) already mentions how he used … Continue reading Signing GMail Messages with the Estonian eID PKI Card (Part 1)