tilde-oauth/keygen.js

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/* global encodePrivateKey, encodePublicKey */
const extractable = true;
function wrap(text, len) {
const length = len || 72;
let result = "";
for (let i = 0; i < text.length; i += length) {
result += text.slice(i, i + length);
result += "\n";
}
return result;
}
function rsaPrivateKey(key) {
return `-----BEGIN RSA PRIVATE KEY-----\n${key}-----END RSA PRIVATE KEY-----`;
}
function arrayBufferToBase64(buffer) {
let binary = "";
const bytes = new Uint8Array(buffer);
const len = bytes.byteLength;
for (let i = 0; i < len; i += 1) {
binary += String.fromCharCode(bytes[i]);
}
return window.btoa(binary);
}
function generateKeyPair(alg, size, name) {
return window.crypto.subtle.generateKey(
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{
name: "RSASSA-PKCS1-v1_5",
modulusLength: 2048, // can be 1024, 2048, or 4096
publicExponent: new Uint8Array([0x01, 0x00, 0x01]),
hash: { name: "SHA-1" }, // can be "SHA-1", "SHA-256", "SHA-384", or "SHA-512"
},
extractable,
["sign", "verify"]
).then(key => {
const privateKey = window.crypto.subtle.exportKey("jwk", key.privateKey).then(encodePrivateKey).then(wrap).then(rsaPrivateKey);
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const publicKey = window.crypto.subtle.exportKey("jwk", key.publicKey).then(jwk => encodePublicKey(jwk, name));
return Promise.all([privateKey, publicKey]);
});
}
// module.exports = { arrayBufferToBase64, generateKeyPair };