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

README.md

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

See http://www.wenzlaff.info

GUI

flow.json

[
    {
        "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": [
            [
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            ]
        ]
    },
    {
        "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"
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        ]
    },
    {
        "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
    }
]