@mt-kit/utils/dist/fingerprint/fingerprint-canvas.js

一个常用的工具库

import { FONT_CONFIG, FONT_CONFIG_FIXED } from "../const";
/**
 * 🫆 获取Canvas指纹
 * @returns {string} Canvas指纹数据
 */
export default function fingerprintCanvas() {
    try {
        const canvas = document.createElement("canvas");
        canvas.width = 200;
        canvas.height = 50;
        const ctx = canvas.getContext("2d");
        if (!ctx) {
            return "";
        }
        // 设置渲染属性
        ctx.textBaseline = "alphabetic";
        ctx.fillStyle = "#f60";
        ctx.fillRect(125, 1, 62, 20);
        ctx.fillStyle = "#069";
        ctx.font = `${FONT_CONFIG.size} "${FONT_CONFIG_FIXED}"`;
        ctx.fillText(FONT_CONFIG.text, 2, 15);
        ctx.fillStyle = "rgba(102, 204, 0, 0.7)";
        ctx.fillText(FONT_CONFIG.text, 4, 17);
        // 获取图像数据并返回前100个像素值
        const imageData = ctx.getImageData(0, 0, 200, 50);
        // 使用更稳定的数据提取方式
        const { data } = imageData;
        const samples = [];
        // 取固定位置的像素值
        for (let i = 0; i < 100; i += 4) {
            samples.push(data[i], data[i + 1], data[i + 2]);
        }
        return samples.join(",");
    }
    catch (error) {
        console.warn("Canvas 指纹失败:", error);
        return "";
    }
}
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