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keyfetch.js
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v1.1.5: used cached keys on verify when possible

This commit is contained in:
AJ ONeal 2019-02-26 23:11:26 -07:00
parent 0f0d0807a0
commit 9e5ffd1fc9
1 changed files with 26 additions and 14 deletions
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keyfetch.js
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@ -239,15 +239,19 @@ keyfetch.verify = function (opts) {
var kid = decoded.header.kid;
var iss;
var fetcher;
var fetchOne;
if (!opts.strategy || 'oidc' === opts.strategy) {
iss = decoded.payload.iss;
fetcher = keyfetch.oidcJwks;
fetchOne = keyfetch.oidcJwk;
} else if ('auth0' === opts.strategy || 'well-known' === opts.strategy) {
iss = decoded.payload.iss;
fetcher = keyfetch.wellKnownJwks;
fetchOne = keyfetch.wellKnownJwk;
} else {
iss = opts.strategy;
fetcher = keyfetch.jwks;
fetchOne = keyfetch.jwk;
}
function verify(jwk, payload) {
var alg = 'RSA-SHA' + decoded.header.alg.replace(/[^\d]+/i, '');
@ -256,20 +260,28 @@ keyfetch.verify = function (opts) {
.update(jwt.split('.')[0] + '.' + payload)
.verify(jwk.pem, decoded.signature, 'base64');
}
return fetcher(iss).then(function (jwks) {
var payload = jwt.split('.')[1]; // as string, as it was signed
if (jwks.some(function (jwk) {
if (kid) {
if (kid !== jwk.kid && kid !== jwk.thumbprint) { return; }
if (verify(jwk, payload)) { return true; }
throw new Error('token signature verification was unsuccessful');
} else {
if (verify(jwk, payload)) { return true; }
if (kid) {
return fetchOne(kid, iss); //.catch(fetchAny);
} else {
fetchAny();
}
function fetchAny() {
return fetcher(iss).then(function (jwks) {
var payload = jwt.split('.')[1]; // as string, as it was signed
if (jwks.some(function (jwk) {
if (kid) {
if (kid !== jwk.kid && kid !== jwk.thumbprint) { return; }
if (verify(jwk, payload)) { return true; }
throw new Error('token signature verification was unsuccessful');
} else {
if (verify(jwk, payload)) { return true; }
}
})) {
return decoded;
}
})) {
return decoded;
}
throw new Error("Retrieved a list of keys, but none of them matched the 'kid' (key id) of the token.");
});
throw new Error("Retrieved a list of keys, but none of them matched the 'kid' (key id) of the token.");
});
}
});
};