25.3.2026 V2

nscs/DigitaleSignatur/VonNachbar/signed_document/document.txt

@@ -0,0 +1,2 @@
+Ich will nicht mehr, ich kann nicht mehr, ich halte das alles nicht mehr aus
+Ein Bösewicht war hier! Muahahaha!

nscs/DigitaleSignatur/VonNachbar/signed_document/public_key.pem

@@ -0,0 +1,9 @@
+-----BEGIN PUBLIC KEY-----
+MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAlMKh5TPBPBr2EnnvMmrR
+EK9vxE0V/DL6AOTCvLCDglcqwmWrygy0a1yWnJ3mkyNCryjU15kZ62M13FY7nATh
+/v38gDpwkS1mR9fmvyHiXKFFaBAWiMSACygFGfpcKJ6oGpm3phrRaOlF14RWy1GM
+hKChD51U3SMnKc5CRASEAQQqhecKWRqXfceKe0Az/2KZhTWFQsUxyDL3SwhnzcF5
+VRopLPtWq3R1ysR+Izpfiie2qHoF6uZYntYvzQGITZ7mlRwcWOfZZRYgjMHweL1l
+5HMLjw3BJXPd40CfRFf5/NqDGY5AXulRmmWSpBmQjQj28w7sSgltzvSaVpC7TuDq
+7QIDAQAB
+-----END PUBLIC KEY-----

nscs/DigitaleSignatur/document.txt

@@ -0,0 +1 @@
+Hello World, what a beatiful day!

nscs/DigitaleSignatur/private_key.pem

@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----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+-----END PRIVATE KEY-----

nscs/DigitaleSignatur/public_key.pem

@@ -0,0 +1,9 @@
+-----BEGIN PUBLIC KEY-----
+MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvaq8/FMavjLuhvmTXFhc
+IesZ+St3F7LAqoMf8MQ+LKCuYTq9H+Jarii98DEigXrBGTbkK91Z8LT/PP1/lieh
+bil1N8KY8CcG0Ulb47J1VN8/QCWu+BMmIAu57aKrOiJepZCu5f9Wq1CzN8tvjRnS
+EvtNekqmqOj4Mp3pYryswhzZoQidCLTJ+h8BYysIPTTBzyj2ESYjwvC8afq7s26P
+yIx3jiV1tsJtP9rOql+wTp/JlTosE+DVkC4ot+utc12gYamh1G21xFuNvu8nMrZ/
+qREPXUJ0bpSt6gT3gX39PdYDtiOldJpP6KDpb/U6Le0nGd5h+7vtxo6fdZK99Zm3
+ZwIDAQAB
+-----END PUBLIC KEY-----

nscs/DigitaleSignatur/signature.bin

@@ -0,0 +1 @@
+VYdnétì/~d±KÄÝ:xÕÙ­Ò~¸®Ç~G×Ëâ?;Ÿèw•´é£Å,~Fñb	˜TôºùÊ«¿¬†<C2AC>• åå^µ²`¡xO<78>¥“‚ôLƒ–ñÝɯ‹tóÂZ¥BîÅ<C3AE>a—‡ŽTçÆüCC1ÜLÖôjm»1Pût˜*н³Š§cy“æ}ÑVVÞõs¯otî@*^Xã»…¥=#<23>ìÜ×6¼ï¨IÙ­Ç	Ö2ó¢˜À›ÅׯÒ(ÿÞ1}ú$pGMŸ)!6¨íéé<C3A9>æ£pö£Täjuב·ÿÒ{éTÍXp®ère#üÞSß$75  Æ·Rä–„¤j

nscs/Hashfunktionen/long.txt

@@ -0,0 +1 @@
+Lorem ipsum dolor sit amet consectetur adipiscing elit. Quisque faucibus ex sapien vitae pellentesque sem placerat. In id cursus mi pretium tellus duis convallis. Tempus leo eu aenean sed diam urna tempor. Pulvinar vivamus fringilla lacus nec metus bibendum egestas. Iaculis massa nisl malesuada lacinia integer nunc posuere. Ut hendrerit semper vel class aptent taciti sociosqu. Ad litora torquent per conubia nostra inceptos himenaeos.

nscs/Hashfunktionen/short.txt

@@ -0,0 +1 @@
+ABC

nscs/Hashfunktionen/similiar-text1.txt

@@ -0,0 +1 @@
+Hallo Welt, heute ist ein schöner Tag!

nscs/Hashfunktionen/similiar-text2.txt

@@ -0,0 +1 @@
+Halo Weelt, heute ist ein schöner Tag!

nscs/ssh-demo/docker-compose.yml

@@ -0,0 +1,13 @@
+services:
+sshd:
+build:
+context: ./sshd
+container_name: sshd-container
+restart: unless-stopped
+ports:
+- "2222:22"
+volumes:
+- ./keys/authorized_keys:/home/docker/.ssh/authorized_keys:ro
+- ./keys/host_keys:/etc/ssh/host_keys
+- ./data:/data
+command: ["/usr/sbin/sshd","-D","-e"]

nscs/ssh-demo/generate_keys.sh

@@ -0,0 +1,29 @@
+#!/bin/bash
+set -e
+KEY_DIR="./keys"
+HOST_KEY_DIR="$KEY_DIR/host_keys"
+mkdir -p "$HOST_KEY_DIR"
+echo "Generating RSA host key..."
+ssh-keygen \
+-t rsa \
+-b 4096 \
+-f "$HOST_KEY_DIR/ssh_host_rsa_key" \
+-N ""
+echo "Generating RSA client key..."
+ssh-keygen \
+-t rsa \
+-b 4096 \
+-f "$KEY_DIR/client_rsa" \
+-N ""
+echo "Creating authorized_keys..."
+cp "$KEY_DIR/client_rsa.pub" "$KEY_DIR/authorized_keys"
+chmod 700 "$KEY_DIR"
+chmod 600 "$KEY_DIR/client_rsa"
+chmod 644 "$KEY_DIR/client_rsa.pub"
+chmod 600 "$KEY_DIR/authorized_keys"
+chmod 600 "$HOST_KEY_DIR/ssh_host_rsa_key"
+echo
+echo "RSA keys generated successfully."
+echo
+echo "Client private key:"
+echo "$KEY_DIR/client_rsa"