digital signature – Why are LMS and XMSS no candidates in the Post-Quantum Cryptography Standardization process?

Why are Leighton-Micali Signature Scheme (LMS) and eXtended Merkle Signature Scheme (XMSS) no candidates in the NIST Post-Quantum Cryptography Standardization process?
Both are mentioned in the final draft of Recommendation for Stateful Hash-Based Signature Schemes.

I was expecting that both algorithms are candidates in the standardization process as well, but it seems that they weren’t even submitted. Can anyone explain why? If they are not considered as candidates for a new standard why does the Recommendation for Stateful Hash-Based Signature Schemes exist and mention exactly those two algorithms?

Is the recommendation just a temporary standard until the standardization process is finished?

cryptography – Why didn’t Alan Turing flee the country to avoid chemical casttration

Alan Turing obtained his PhD from the Department of Mathematics at Princeton, according to Wikipedia.

So after his conviction for gross indecency, why didn’t he just leave the country to avoid the treatment with diethylstilbestrol that he agreed to instead of doing jail time?

I guess he was known well enough in the scientific community and would have been welcome a lot at universities in the USA.

cryptography – best platform to invest bitcoin

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It offers a wide range of services, designed to help both traders and Bitcoin miners invest their funds / Bitcoins at great interest rates. It is based in Canada and have investment professionals from advanced computer technology to engineering. Join the platform and start getting profit with professionals in just 168 hours!.

cryptography – Start mining with 2GPUs vs Re-selling for profit

I currently own a rtx 3060ti and 3070 (bought them at 503usd and 657usd on january 2021) I wanted to ask if I should start mining ethereum with these two rigs or should I just re-sell them right now. If I start mining, I already have:
CPU: i5-10400f x2
PSU: Thermaltake 750W (80+ Gold) / Corsair 650W (80+ Bronze)
Motherboard: Asrock b460 phantom gaming 4 / Asrock b460 pro 4
RAM: Corsair Vengeance DDR4 (8GBx2) / Gskill DDR4 16GB/3200 sniper x
SSD: Corsair M.2 PCIe 480GB
Since I have two gaming computers, I want to use the components from one of them to create a 2GPU rig. I’m planning to buy a cheap GPU to replace my current PC since I rarely game nowadays. The extra costs are the GPU risers and frame which are cheap.

cryptography – Shared crypto hardware wallet

We were all newbs at the beginning, and did things the wrong way.
My partner and I bought crypto separately with our own exchange accounts, but transferred our hodl coins to a single shared hardward wallet address.
Using Koinly, we can easily determine which transaction in is for which (only 15-20 or so)
Problem/challenge is, how will this work when i transfer the coins out using FIFO, LIFO. We Koinly know which “coins” are which?
I have never actually transferred out from the hardware wallet, and i want to fix this.
I thought about transferring all coins out to our respective exchanges (at the same time), then back into new separate wallets. Will this work and be cool to the ATO?

Second question. Can you have a share wallet address for a masternode and split payouts/cost by the % coin holdings.

Thanks

cryptography – True or scam: registering for new cryptocurrency “TRON” awarding free 300 points for invitation

cryptography – True or scam: registering for new cryptocurrency “TRON” awarding free 300 points for invitation – Bitcoin Stack Exchange

cryptography – LSFR sequence, find a triple satisfying a sequence

I’m learning about LSFR systems and I have to solve the problem:
Given is a sequence xi = a * xi-1 +b (being an element of Zm.
Find a triple (m,a,b) for sequence 13, 223, 793, 483,
213, 623, 593.

I’m learning about cryptography at the moment but I’ve never done such a calculation
before (with the modulus m). I think I have to solve a system of 3 equations?
But I don’t know to deal with the modulus.

Please maybe someone can help me.
Thanks

cryptography – How to determine what type of encoding/encryption has been used?

This is very weak security on all fronts! The plaintext is P4$$w0rdP4$$w0rd and it’s encrypted using XOR encryption, with the key CdZ4MLMPgYtAE9gQ80gMtg==. This produces the ciphertext posted by the OP above, WeJcFMQ/8+8QJ/w0hHh+0g==.

To verify:

First, use xxd to get the underlying binary of the plaintext:

echo -n 'P4$$w0rdP4$$w0rd' | xxd -b -c16

This produces:

01010000 00110100 00100100 00100100 01110111 00110000 01110010 01100100 01010000 00110100 00100100 00100100 01110111 00110000 01110010 01100100

Next, base64-decode the key and use xxd to get the underlying binary of the key:

echo -n 'CdZ4MLMPgYtAE9gQ80gMtg==' | base64 -d | xxd -b -c16

This produces:

00001001 11010110 01111000 00110000 10110011 00001111 10000001 10001011 01000000 00010011 11011000 00010000 11110011 01001000 00001100 10110110

Now, XOR the two binary strings:

01010000 00110100 00100100 00100100 01110111 00110000 01110010 01100100 01010000 00110100 00100100 00100100 01110111 00110000 01110010 01100100  (plaintext)
(XOR)
00001001 11010110 01111000 00110000 10110011 00001111 10000001 10001011 01000000 00010011 11011000 00010000 11110011 01001000 00001100 10110110  (key)
-----------------------------------------------------------------------------------------------------------------------------------------------
01011001 11100010 01011100 00010100 11000100 00111111 11110011 11101111 00010000 00100111 11111100 00110100 10000100 01111000 01111110 11010010  (ciphertext)

Finally, use bc, xxd, and base64 to convert the binary ciphertext to base64:

echo "obase=16; ibase=2; 01011001111000100101110000010100110001000011111111110011111011110001000000100111111111000011010010000100011110000111111011010010" | bc | xxd -p -r | base64

This produces WeJcFMQ/8+8QJ/w0hHh+0g==, which is the ciphertext posted by the OP in the question above.


I apologize if this answer seems contrived. Admittedly, it is. Questions similar to this, where the poster provides only some ciphertext, and asks for some insight as to how that ciphertext could have been produced, seem come up quite frequently on security.stackexchange.com; and this question is often referenced as a duplicate to those. The point of this answer is to illustrate that questions of this nature are unanswerable, because there are infinite solutions to these types of questions.

python 3.x – Offline install of cryptography package fails

I’m trying to install offline the following dependencies : requests and Office365-REST-Python-Client in my production environnement.

I downloaded zipped packages using :

pip download - r requests.txt

I got the following .whl

enter image description here

When I try to run the install on the production server with the following command :

pip3 install -r /dumy_path/wheels/requirements.txt --no-index --find-links file:///dumy_path/wheels

I get the following error for the crypto package:

Collecting Office365-REST-Python-Client==2.3.2 (from -r /dumy_path/wheels/requirements.txt (line 1))

Collecting requests (from -r /dumy_path/wheels/requirements.txt (line 2))

Collecting msal (from Office365-REST-Python-Client==2.3.2->-r /dumy_path/wheels/requirements.txt (line 1))

Collecting idna<3,>=2.5 (from requests->-r /dumy_path/wheels/requirements.txt (line 2))

Collecting urllib3<1.27,>=1.21.1 (from requests->-r /dumy_path/wheels/requirements.txt (line 2))

Collecting certifi>=2017.4.17 (from requests->-r /dumy_path/wheels/requirements.txt (line 2))

Collecting chardet<5,>=3.0.2 (from requests->-r /dumy_path/wheels/requirements.txt (line 2))

Collecting PyJWT(crypto)<3,>=1.0.0 (from msal->Office365-REST-Python-Client==2.3.2->-r /dumy_path/wheels/requirements.txt (line 1))

Collecting cryptography<4,>=0.6 (from msal->Office365-REST-Python-Client==2.3.2->-r /dumy_path/wheels/requirements.txt (line 1))

  Could not find a version that satisfies the requirement cryptography<4,>=0.6 (from msal->Office365-REST-Python-Client==2.3.2->-r /dumy_path/wheels/requirements.txt (line 1)) (from versions: )

No matching distribution found for cryptography<4,>=0.6 (from msal->Office365-REST-Python-Client==2.3.2->-r /dumy_path/wheels/requirements.txt (line 1))

Production environnement is Redhat 7.9 and dev environnement is Fedora Workstation 33
How can I fix this ?
Thanks

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