21 lines
938 B
JavaScript
21 lines
938 B
JavaScript
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class Verifier {
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/***
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* @param content Content
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*/
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async verify(content) {
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if (!window.isSecureContext) return;
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if (typeof TextEncoder === "undefined") return;
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if (typeof crypto === "undefined") return;
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const encoder = new TextEncoder();
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const digestBuffer = await crypto.subtle.digest(content.index.hashAlgorithm, encoder.encode(content.content));
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const hashArray = Array.from(new Uint8Array(digestBuffer)); // convert buffer to byte array
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const digest = hashArray.map(b => b.toString(16).padStart(2, '0')).join(''); // convert bytes to hex string
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if (content.index.hash === digest) {
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document.getElementById("verification").innerHTML =
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"The hash of the content is verified to correspond with the hash" +
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" in the metadata. You are now reading exactly what was intended.";
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}
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}
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}
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