42 lines
1.1 KiB
TypeScript
42 lines
1.1 KiB
TypeScript
// utils/crypto.ts
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export const generateUserKeyPair = async () => {
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return await window.crypto.subtle.generateKey(
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{
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name: "RSASSA-PKCS1-v1_5",
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modulusLength: 2048,
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publicExponent: new Uint8Array([1, 0, 1]), // 65537
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hash: "SHA-256",
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},
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true, // extractable
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["sign", "verify"]
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);
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};
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export const signVote = async (data: any, privateKey: CryptoKey) => {
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const encoder = new TextEncoder();
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const encodedData = encoder.encode(JSON.stringify(data));
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const signature = await window.crypto.subtle.sign(
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"RSASSA-PKCS1-v1_5",
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privateKey,
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encodedData
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);
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// Convert to Base64 or Hex to store in Yjs easily
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return btoa(String.fromCharCode(...new Uint8Array(signature)));
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};
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export const verifyVote = async (data: any, signatureStr: string, publicKey: CryptoKey) => {
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const encoder = new TextEncoder();
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const encodedData = encoder.encode(JSON.stringify(data));
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// Convert Base64 back to Uint8Array
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const signature = Uint8Array.from(atob(signatureStr), c => c.charCodeAt(0));
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return await window.crypto.subtle.verify(
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"RSASSA-PKCS1-v1_5",
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publicKey,
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signature,
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encodedData
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);
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}; |