/var/www/qr4y.gr/server/delivery/node_modules/jose/lib/jwa/ecdh
Edit: /var/www/qr4y.gr/server/delivery/node_modules/jose/lib/jwa/ecdh/compute_secret.js (1244B)
const { improvedDH } = require('../../help/runtime_support')
if (improvedDH) {
const { diffieHellman } = require('crypto')
const { KeyObject } = require('../../help/key_object')
const importKey = require('../../jwk/import')
module.exports = ({ keyObject: privateKey }, publicKey) => {
if (!(publicKey instanceof KeyObject)) {
({ keyObject: publicKey } = importKey(publicKey))
}
return diffieHellman({ privateKey, publicKey })
}
} else {
const { createECDH, constants: { POINT_CONVERSION_UNCOMPRESSED } } = require('crypto')
const base64url = require('../../help/base64url')
const crvToCurve = (crv) => {
switch (crv) {
case 'P-256':
return 'prime256v1'
case 'P-384':
return 'secp384r1'
case 'P-521':
return 'secp521r1'
}
}
const UNCOMPRESSED = Buffer.alloc(1, POINT_CONVERSION_UNCOMPRESSED)
const pubToBuffer = (x, y) => Buffer.concat([UNCOMPRESSED, base64url.decodeToBuffer(x), base64url.decodeToBuffer(y)])
module.exports = ({ crv, d }, { x, y }) => {
const curve = crvToCurve(crv)
const exchange = createECDH(curve)
exchange.setPrivateKey(base64url.decodeToBuffer(d))
return exchange.computeSecret(pubToBuffer(x, y))
}
}