From fb25c51e9bc3c3f03c80e33e38c3a481f1840754 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nu=C3=B1o=20Sempere?= Date: Tue, 18 Sep 2018 11:21:12 +0100 Subject: [PATCH] Create 100-predictions.md --- rat/100-predictions.md | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 rat/100-predictions.md diff --git a/rat/100-predictions.md b/rat/100-predictions.md new file mode 100644 index 0000000..c9a5175 --- /dev/null +++ b/rat/100-predictions.md @@ -0,0 +1,27 @@ +# 100 predictions + +Para la versión en español, ve a [aquí](nunosempere.github.io/rat/100-predicciones) + +## Day 1 +{SHA is an acronym for "Secure Hashing Algorithm"; a hash algorithm recieves a string, or more generally a document, an returns a number. +Thus, a hash can identify a document, such that the hash can be revealed without revealing the document. +If the document is published afterwards, people know it hasn't been changed (because the hash would also change) + +In 2017, a project by CWI Amsterdam and Google produced 2 different legible pdfs which had the same SHA1 hash. +This makes SHA1 insecure; it is no longer enough to uniquely identify a document. + +The hash family continued with SHA2, and then SHA3. The most secure version of SHA3 is SHA-512. + +Questions +- What probability, per year, do you assign to SHA-512 being successfully attacked? +By successfully attacked, we understand that someone finds x, x' such that SHA3-512(x) = SHA3-512(x'), or that given a +y = SHA3-512(z) someone finds a z' =/= z such that SHA3-512(z')=y. +- WHat probability, per year, do you assign to SHA3-512 being replaced as a standard?} + +Recommended time: 15 mins. + +## Hashes +Everything between {} is hashed through SHA3-512 (https://www.browserling.com/tools/sha3-hash), and published on Twitter (@NunoSempere) + +### Day 1 +0addb6466a2fb3a537fa276e39306f2b57f8d31e66b826f57b62d141ff3de821fca5b9e35de06092c3847bc018b1531ecc3123e09b0f137700c2433b58f8781f