http://easygpg2.i2p/egpgtechnical.html
Its repositories are at https://archive.org/details/easygpg and https://codeberg.org/giXzkGsc/EasyGPG . It also has repositories in Onionland at http://7hinc6ucgvwbcjjoe44lhzzxyjptb3da6tzl33oe7ezl2qgwlrkfe6yd.onion/ and on I2P at http://easygpg2.i2p/ About “deniable authentication” Deniable authentication is usually defined as a way that Bob can prove to himself that the message he received was, in fact, encrypted by Alice, but he is unable to prove this to anyone else.