Proxy re-encryption

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

Lessons learned: Gephi not starting up

Scenario: When using Ubuntu Trusty (14.04.3LTS) Gephi 0.82 initializes but gets stuck on "Loading Cached Objects" Solution: The default Gephi startup bash script does not correctly initialize the JAVA path (it uses $jdkhome) The solution is simply to add the following to the beginning of the startup script (~/gephi/bin/gephi) export JAVA_HOME=/usr/lib/jvm/default-java jdkhome=$JAVA_HOME The full script is … Continue reading Lessons learned: Gephi not starting up