42 lines
1.2 KiB
TypeScript
42 lines
1.2 KiB
TypeScript
const arrayBufferToBase64 = (buffer: ArrayBuffer) => {
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let binary = "";
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const bytes = new Uint8Array(buffer);
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const chunkSize = 0x8000;
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for (let i = 0; i < bytes.length; i += chunkSize) {
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binary += String.fromCharCode(...bytes.subarray(i, i + chunkSize));
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}
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return btoa(binary);
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};
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const toPem = (base64: string, label: string) => {
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const wrapped = base64.match(/.{1,64}/g)?.join("\n") ?? base64;
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return `-----BEGIN ${label}-----\n${wrapped}\n-----END ${label}-----`;
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};
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export const generateSshKeyPairPem = async () => {
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const keyPair = await crypto.subtle.generateKey(
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{
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name: "RSASSA-PKCS1-v1_5",
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modulusLength: 4096,
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publicExponent: new Uint8Array([1, 0, 1]),
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hash: "SHA-256",
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},
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true,
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["sign", "verify"],
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);
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const privateKey = await crypto.subtle.exportKey("pkcs8", keyPair.privateKey);
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const publicKey = await crypto.subtle.exportKey("spki", keyPair.publicKey);
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return {
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privateKeyPem: toPem(arrayBufferToBase64(privateKey), "PRIVATE KEY"),
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publicKeyPem: toPem(arrayBufferToBase64(publicKey), "PUBLIC KEY"),
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};
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};
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export const generatePrivateKeyPem = async () => {
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const keyPair = await generateSshKeyPairPem();
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return keyPair.privateKeyPem;
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};
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