Crypto challenge 2
Moderators: jelco, bert_the_turtle, Chris, Icepick, Rkiver
- NeoThermic
- Introversion Staff
- Posts: 6256
- Joined: Sat Mar 02, 2002 10:55 am
- Location: ::1
- Contact:
J"dq% b"keh lgu$f of#xm ju#mx !o|$r bpljj tvr$^ pw#qf z"vxt q"wln t"lri jxlhz bn
#fz u"|sz !edrs pv#wy pr#yx !cop% Bhwiw !cop% xg#ew f"dpq !comp
You're going to become a bastard about this, arn't you?
It holds up to Frequency Analsys. I actualy ended up coding one in PHP for the point of testing it:
Letter| Frequency| Percent Frequency
p 8 6.67%
" 7 5.83%
# 7 5.83%
x 6 5.00%
w 6 5.00%
j 5 4.17%
l 5 4.17%
f 5 4.17%
o 5 4.17%
! 5 4.17%
r 5 4.17%
q 4 3.33%
b 4 3.33%
z 4 3.33%
d 3 2.50%
% 3 2.50%
e 3 2.50%
h 3 2.50%
u 3 2.50%
$ 3 2.50%
m 3 2.50%
t 3 2.50%
v 3 2.50%
c 3 2.50%
g 2 1.67%
| 2 1.67%
n 2 1.67%
i 2 1.67%
s 2 1.67%
y 2 1.67%
k 1 0.83%
^ 1 0.83%
Now, in order for me to start saying, ahh, p = e, you need the percentage to be higher than that, as e is the most frequent letter that we use in teh english language, but thats at approx 12%. p only hits 8% of the time in that, so I can't really draw the conclusion that its just a simple cypher text. Please correct me if I'm wrong, or push me in the right direction if thats where I was heading...
NeoThermic
[quazi-edit - damn Ib... I had to format that table manually using spaces! fing thing!]
#fz u"|sz !edrs pv#wy pr#yx !cop% Bhwiw !cop% xg#ew f"dpq !comp
You're going to become a bastard about this, arn't you?
It holds up to Frequency Analsys. I actualy ended up coding one in PHP for the point of testing it:
Letter| Frequency| Percent Frequency
p 8 6.67%
" 7 5.83%
# 7 5.83%
x 6 5.00%
w 6 5.00%
j 5 4.17%
l 5 4.17%
f 5 4.17%
o 5 4.17%
! 5 4.17%
r 5 4.17%
q 4 3.33%
b 4 3.33%
z 4 3.33%
d 3 2.50%
% 3 2.50%
e 3 2.50%
h 3 2.50%
u 3 2.50%
$ 3 2.50%
m 3 2.50%
t 3 2.50%
v 3 2.50%
c 3 2.50%
g 2 1.67%
| 2 1.67%
n 2 1.67%
i 2 1.67%
s 2 1.67%
y 2 1.67%
k 1 0.83%
^ 1 0.83%
Now, in order for me to start saying, ahh, p = e, you need the percentage to be higher than that, as e is the most frequent letter that we use in teh english language, but thats at approx 12%. p only hits 8% of the time in that, so I can't really draw the conclusion that its just a simple cypher text. Please correct me if I'm wrong, or push me in the right direction if thats where I was heading...
NeoThermic
[quazi-edit - damn Ib... I had to format that table manually using spaces! fing thing!]
searched google - first result -> https://www.otpbank.hu/otpportal2000/
:S - i have no idea aboutthis shtuff - i'll just back down now before you all kick my ass.
:S - i have no idea aboutthis shtuff - i'll just back down now before you all kick my ass.
- Rock - Punk - Ska - Emo -
www.freewebs.com/metalcity
www.freewebs.com/metalcity
- NeoThermic
- Introversion Staff
- Posts: 6256
- Joined: Sat Mar 02, 2002 10:55 am
- Location: ::1
- Contact:
Quote: from Hex22 on 5:17 pm on Mar. 23, 2004[br]No, it's not a simple substitution cipher, maybe he's using two symbols for each letter. anyway, I think it's a software encryption, and not a simple pen-paper one.
IF he was using two symbols per letter, then we should see at least one repeat, considering that you can't write that much without having one of the letters repeat.
I modified my script to pick up groups of two combos, but it found none, suggesting that each symbol must be a letter.
NeoThermic
-
- level0
- Posts: 3
- Joined: Sat Oct 09, 2021 3:43 pm
Re: Crypto challenge 2
In the first crypto challenge, we saw that converting a string of characters into its SHA256 hash is not as straightforward as it seems. In this second crypto challenge, you will be given a binary file and asked to calculate its SHA256 hash. You may use either Command Prompt or PowerShell to accomplish this task. In this article, we will explore the Bitcoin cryptocurrency by giving live information.
-
- level1
- Posts: 19
- Joined: Tue Apr 26, 2022 9:52 am
Re: Crypto challenge 2
This information is, of course, very interesting. But for those who are new to trading, it is much more important to know where to start and how not to make mistakes. You can read an article about how and where to buy cryptocurrencies, including BTC, at https://j2tx.com/ The J2TX platform offers clients an opportunity to buy bitcoins instantly with minimal loss of time and money. I think this information will be useful not only for beginners, but also for more experienced traders.
Re: Crypto challenge 2
A cryptocurrency (or “crypto”) is a digital currency that can be used to buy goods and services, but uses an online ledger with strong cryptography to secure online transactions. Much of the interest in these unregulated currencies is to trade for profit, with speculators at times with check this .
Crypto is the future, and the future is now. Nothing I recommend should be taken as financial advice but I believe that sharing knowledge is the way we learn and grow.
Crypto is the future, and the future is now. Nothing I recommend should be taken as financial advice but I believe that sharing knowledge is the way we learn and grow.
Who is online
Users browsing this forum: Google [Bot] and 22 guests