Add JWT

Closes #13

test/jwt.test.ts

@@ -0,0 +1,41 @@
+import {beforeAll, expect, test} from 'bun:test'
+import {JWTcontext, JWTalgorithm} from '../src/jwt'
+
+const algs: JWTalgorithm[] = ["HS256", "HS512", "ES256", "ES512", "EdDSA"]
+const contexts: Map<JWTalgorithm, JWTcontext> = new Map()
+
+beforeAll(async () => {
+    for (const alg of algs) {
+        const key = await JWTcontext.gen_key(alg as JWTalgorithm)
+        expect(key).not.toBeUndefined()
+
+        const context = new JWTcontext(key, alg as JWTalgorithm)
+        contexts.set(alg as JWTalgorithm, context)
+    }
+})
+
+test('Base case', async () => {
+    let payload = {
+        yeet: "yaat",
+        lol: "yes"
+    }
+
+    // @ts-expect-error : idc bout your iterator thingy >:(
+    for (const context of contexts.values()) {
+        const jwt = await context.sign(payload, true, "2 days", "pascal", "server")
+
+        const decoded = jwt.payload
+        expect(decoded).toEqual(payload)
+
+        const verified = (await context.verify(jwt, "pascal", "server")).expect("Should verify the JWT")
+        expect(verified).toEqual(payload)
+    }
+})
+
+test.todo("Multiple audience can be verified")
+test.todo("Multiple issuer can be verified")
+test.todo("Wrong audience is rejected")
+test.todo("Wrong issuer is rejected")
+test.todo("Expired JWT is rejected")
+test.todo("Wrong key won't decrypt")
+test.todo("tampered JWT are rejected (test 3 parts) (TODO : decode ?)")