Path: ...!3.eu.feeder.erje.net!feeder.erje.net!news.szaf.org!weretis.net!feeder8.news.weretis.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com>
Newsgroups: sci.crypt
Subject: Re: Naive PRNG encryption?
Date: Sat, 3 Aug 2024 11:47:38 -0700
Organization: A noiseless patient Spider
Lines: 12
Message-ID: <v8lu0b$3it4o$2@dont-email.me>
References: <v8l1h5$3c3lj$1@dont-email.me>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Injection-Date: Sat, 03 Aug 2024 20:47:39 +0200 (CEST)
Injection-Info: dont-email.me; posting-host="c5d5c7fe7b787c73b28f56e08a59c030";
	logging-data="3765400"; mail-complaints-to="abuse@eternal-september.org";	posting-account="U2FsdGVkX18aoSnS4NGMX5Hnzg3LMyYBJ7Qmbavwnbg="
User-Agent: Mozilla Thunderbird
Cancel-Lock: sha1:doVZWMQyxkwMoh6K+rKL09ZzptU=
In-Reply-To: <v8l1h5$3c3lj$1@dont-email.me>
Content-Language: en-US
Bytes: 1488

On 8/3/2024 3:41 AM, vallor wrote:
> I saw someone mention this on another 'froup, and I've thought about it
> myself.  Is it really "uncrackable"?
> 
> Take a plaintext and transform each character with the output
> of a PRNG, with the seed being the key.
> 
> How easy is it to crack the resulting "ciphertext"?
> 

Depends on the quality of the PRNG. You would probably want to use a 
CSPRNG...