-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Powers of Tau Attestation by Gսѕtavо Frеdегіc೦ - ----------------------------------------------
Date: 5/Feb/2018 Location: Ottawa, ON, Canada Main document given to Gսѕtavо with instructions: https://github.com/ebfull/powersoftau/wiki. sha256sum -b challenge 81e7d56284c57a227841243565baad98aba3fae1165e859027ea03415706c726 *challenge Blake2b response file: The BLAKE2b hash of `./response` is: 8abb2666 2df43f23 310b3896 665fb8b0 a9995403 a5c5c890 c785bbd4 92093c6b fd553da7 81623379 22184427 5b2c212b 722c78ca 5d02a204 f248e94e e8e5b00f My PGP public key: https://keys.mailvelope.com/pks/lookup?op=get&search=0xFB442070C0242E80 My fingerprint: F3CE E9F3 1BDF 1268 DBF2 32C7 FB44 2070 C024 2E80 Actions: Principle: I didn't want to destroy any hardware because I'm not rich. Environment: a small room, where I was alone. Preparation: My host computer is a MacBook Pro with macOS 10.13.3. I installed VirtualBox (www.virtualbox.org). I downloaded a Ubuntu desktop iso image from https://www.ubuntu.com and I created a VM in VirtualBox. I enabled "Disk Image Encryption" in the VM. I tured off its Bluetooth adapter. In the beginning I left the network adapter connected to the host's. After installing Ubuntu in the VM, I installed curl. Other installs in the guest VM (still dependent on network adapter connected to the host's at this stage): curl in shell Rust from https://www.rust-lang.org/ Powers of Tau source from https://github.com/ebfull/powersoftau Ceremonial step: cargo run --release --bin compute # with network connection on At the step where the program asks for keyboard input, Gustavo turned the VM (guest) network connection off and the host connection off also. The input may have included counts of letters in words I read today, words I read today in English and in Russian, and people that I counted today. It may have included names of people. I also may have played a song by Beethoven in the keyboard as if it were a piano. And I may have played the fingering of a Bach violin concerto as if the keyboard were a violin fingerboard. And I may have typed random keys in the keyboard. At the end of the computation (it tooks almost 3 hours), I copied to clipboard the BLAKE2b hash of the response file. Then I rebooted the VM. After that, created a volume share between guest and host. I then saved the response file in the host computer. Then I deleted the VM, including all of its (encrypted) files. After, around 7 pm UTC-6 I uploaded the response file to the URL given to me by email ( it began with https://s3-us-west-2.amazonaws.com/powersoftau/p6RZ ) B̸̡͔̻̬̩̖͚̬͈͙͔̫̩͙̻̉̈̄̌̊͐̄̂̈́̊̾͆͠Ḑ̸̻̣̲̗͇͍͍͍̞̩̖͗̉͊S̸̢̝͕͎̝̘̥̬̲͉̯̣͙͂̐͜ - ---------------------------------------------- -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEE887p8xvfEmjb8jLH+0QgcMAkLoAFAlp5DvAACgkQ+0QgcMAk LoDPexAA1JbFpCsgZWq/j1b+Ng7ItKBE2/l8NS0sWiqn4bHBW2oEEOGTUsRAFGCj HFylW8aDVi+YY7Gene+Gr5EDkbhT0en8lBeSK0qBRNkHN5yrzw0cZJWHNOoofeTZ SJzodJiFlkq9P9cIO12v1XdRP59VmaAM/4npDpbqrjB76cUG4aEaxwz5OgE4Er3A WvLs1aGd3le34KROLnrGGOYm1msX9MdFWFS9UEztqTYcMsn9ayz6e6HNPIk4u2Ry GcOZTdw+RCaqJhA10PkSEsGhoL1JexsksYIapy0i9xOKaqMXMrbYfs3S4ktHY4q6 aOBMR2yQ6hJ1BQ/LsvkTL27p00UFXr/Vi/ZjwZZtRAP9YFxlrg7NrFIw7Xf+IF6v a+WFDX5Qt8YQ2gup+pheR15kQViNKrqx3OkpBVzj+D4RSvrbmCerOEYxrw4PJh7F xSyZ8MOjB5pAdhQ2nt56GjEKa57ID/3UQM+iPrrmurbOlVUs4kSJ2SbX2hq1p2CY ETgxUM+o9W956wT7Un3khptIUSkLqJoY0KPz6InpI2fdLHSSF2s4OG9ghtiF3uyE LHaXu/mB2xM/2GI/1K9Z446dSlh6xaL84JDyRXed06F51LstYNgLb0K43ivc1ilq XYC8ZDgaJbF9BYSYZlsKfrzS+7pNH6M7vh7iuq/jiOOB/DF718k= =M6yK -----END PGP SIGNATURE-----