Hardware Random Number Generator (HRNG) or True Random Number Generator (TRNG) and GUI

Flow with Raspberry Pi Hardware Random Number Generator (HRNG) or True Random Number Generator (TRNG).

GUI

Note: some third-party nodes may appear with blank styling, and not as they appear in the Node-RED Editor.

[{"id":"246f8bb7.1d97c4","type":"tab","label":"Zufallszahlen","disabled":false,"info":""},{"id":"b3908204.81b368","type":"group","z":"246f8bb7.1d97c4","name":"Hardware Random Number Generator (HRNG) or True Random Number Generator (TRNG)","style":{"fill":"#d1d1d1","label":true},"nodes":["670c710c.5f63f8","6c652b34.de905c"],"x":214,"y":91.5,"w":573,"h":97},{"id":"b0e49796.33657","type":"inject","z":"246f8bb7.1d97c4","name":"Start","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":130,"y":140,"wires":[["670c710c.5f63f8"]]},{"id":"dfb968e1.08f3d","type":"debug","z":"246f8bb7.1d97c4","name":"Ausgabe Fehler","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":560,"y":240,"wires":[]},{"id":"dcad4603.bb8a1","type":"debug","z":"246f8bb7.1d97c4","name":"Ausgabe Rückgabecode","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":590,"y":300,"wires":[]},{"id":"8dc39f23.68882","type":"debug","z":"246f8bb7.1d97c4","name":"Ausgabe Ergebnis als Hex","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":960,"y":300,"wires":[]},{"id":"89fc210d.74ec","type":"hex to bin","z":"246f8bb7.1d97c4","name":"","x":880,"y":140,"wires":[["a04f0a1e.999d98","58fe6fde.34f28"]]},{"id":"a04f0a1e.999d98","type":"debug","z":"246f8bb7.1d97c4","name":"Ausgabe Ergebnis als Bin","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":950,"y":240,"wires":[]},{"id":"4dbde524.0e9194","type":"comment","z":"246f8bb7.1d97c4","name":"(c) 2021 Thomas Wenzlaff www.wenzlaff.info","info":"","x":1070,"y":60,"wires":[]},{"id":"1da03cda.8a6b3b","type":"comment","z":"246f8bb7.1d97c4","name":"Der physikalischer Zufallszahlengenerator läuft so nur auf Linux Systemen, die die Hardwaren Schnittstelle für Zufallszahlen /dev/hwrng aktiviert haben wie z.B. Raspberry Pi","info":"","x":630,"y":440,"wires":[]},{"id":"2169ad57.b1b492","type":"comment","z":"246f8bb7.1d97c4","name":"Kryptographisch sicherer Zufallszahlengenerator mit dem Raspberry Pi und Hardware Random Number Generator (RNG)","info":"Siehe http://blog.wenzlaff.de/?p=16446","x":470,"y":60,"wires":[]},{"id":"670c710c.5f63f8","type":"exec","z":"246f8bb7.1d97c4","g":"b3908204.81b368","command":"head -c 128 /dev/hwrng","addpay":false,"append":"","useSpawn":"false","timer":"2","oldrc":false,"name":"lese aus hwrng","x":320,"y":140,"wires":[["6c652b34.de905c"],["dfb968e1.08f3d"],["dcad4603.bb8a1"]]},{"id":"6c652b34.de905c","type":"function","z":"246f8bb7.1d97c4","g":"b3908204.81b368","name":"to 128 Hex Zeichen","func":"msg.payload = msg.payload.toString(\"hex\").substr(1,128);\nreturn msg;\n","outputs":1,"noerr":0,"initialize":"","finalize":"","x":550,"y":140,"wires":[["8dc39f23.68882","89fc210d.74ec","8bc585e3.a455d8"]]},{"id":"9c22faef.2052e","type":"ui_button","z":"246f8bb7.1d97c4","name":"","group":"37cc6aa7.926f66","order":9,"width":0,"height":0,"passthru":false,"label":"Generate Zufallszahl","tooltip":"","color":"","bgcolor":"","icon":"","payload":"","payloadType":"str","topic":"topic","topicType":"msg","x":160,"y":240,"wires":[["670c710c.5f63f8"]]},{"id":"8bc585e3.a455d8","type":"ui_text","z":"246f8bb7.1d97c4","group":"37cc6aa7.926f66","order":6,"width":0,"height":0,"name":"","label":"Zufallszahl Hex (128 Byte, 512 Bit)","format":"{{msg.payload}}","layout":"col-center","x":980,"y":360,"wires":[]},{"id":"58fe6fde.34f28","type":"ui_text","z":"246f8bb7.1d97c4","group":"37cc6aa7.926f66","order":7,"width":0,"height":0,"name":"","label":"Zufallszahl Bin (128 Byte, 512 Bit)","format":"{{msg.payload}}","layout":"col-center","x":1120,"y":140,"wires":[]},{"id":"bb9d17b9.20931","type":"ui_button","z":"246f8bb7.1d97c4","name":"","group":"37cc6aa7.926f66","order":8,"width":0,"height":0,"passthru":false,"label":"Lösche Zufallszahlen","tooltip":"","color":"","bgcolor":"#79c358","icon":"","payload":"","payloadType":"str","topic":"topic","topicType":"msg","x":160,"y":380,"wires":[["3ecc2f2d.6e7be"]]},{"id":"3ecc2f2d.6e7be","type":"function","z":"246f8bb7.1d97c4","name":"Löschen","func":"msg.payload=\"\";\n\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","x":460,"y":380,"wires":[["8bc585e3.a455d8","58fe6fde.34f28"]]},{"id":"37cc6aa7.926f66","type":"ui_group","name":"BIP39","tab":"2b1a348.d04994c","order":1,"disp":true,"width":"14","collapse":false},{"id":"2b1a348.d04994c","type":"ui_tab","name":"BIP39","icon":"fingerprint","disabled":false,"hidden":false}]