From: Klaus Sembritzki <klausem@gmail.com>
Date: Fri, 23 Jan 2026 20:16:46 GMT
Subject: The SHA256 of "xy\n" (ASCII, no CRLF) contains 1337, ACBAD in za, and I am 1aa
Message-ID: <CADMnYXDDbVBwZgETsFhwkOyn8cM8QU4+YQs2rRfTac6ec49-5A@mail.gmail.com>

Dear all,

see for yourself:

$ # xy: 1337
$ echo xy | sha256sum
$ 3b2fc206fd92be3e70843a6d6d466b1f400383418b3c16f2f0af89981f1337f3

$ # za: acbad
$ echo za | sha256sum
$ 28832ea947ea9588ff3acbad546b27fd001a875215beccf0e5e4eee51cc81a2e

$ # My initials (ks): 1aa
$ echo ks | sha256sum
$ 1aa44e718d5bc9b7ff2003dbbb6f154e16636d5c2128ffce4751af5124b65337

$ # 50566750337
$ echo thinking | sha256sum
$ 50566750337beb9e98e553fd9196d10576f9eb0cbc6b66e2586b9d73af4f352f

Less strange results, but I still wonder if this is random, as
expected after reading this: https://crypto.stackexchange.com/a/12840

$ # It was bad AF BC:
$ # bc, badfaf
$ echo bc | sha256sum
$ bc18cd878fc136926875bcb4bddc7f3badfaf4298f5dd1a9fd4c1b9692b624fc

$ # 439247560, 1532557
$ echo vw | sha256sum
$ 439247560f158e6c80ea9b43c3345b4468ccf6fb1532557b1bab8908ad8b075a

I do not need my name attached to these examples, even though I am 1aa.

Cheers,
Klaus Sembritzki