test: add test for rfc7518#appendix-C

test/jwe/ecdh_derive.test.js

@@ -0,0 +1,33 @@
+const test = require('ava')
+
+const derive = require('../../lib/jwa/ecdh/derive')
+const JWK = require('../../lib/jwk')
+const base64url = require('../../lib/help/base64url')
+
+test('https://tools.ietf.org/html/rfc7518#appendix-C', t => {
+  const alice = JWK.asKey({
+    kty: 'EC',
+    crv: 'P-256',
+    x: 'gI0GAILBdu7T53akrFmMyGcsF3n5dO7MmwNBHKW5SV0',
+    y: 'SLW_xSffzlPWrHEVI30DHM_4egVwt3NQqeUD7nMFpps',
+    d: '0_NxaRPUMQoAJt50Gz8YiTr8gRTwyEaCumd-MToTmIo'
+  })
+
+  const bob = JWK.asKey({
+    kty: 'EC',
+    crv: 'P-256',
+    x: 'weNJy2HscCSM6AEDTDg04biOvhFhyyWvOHQfeF_PxMQ',
+    y: 'e8lnCO-AlStT-NJVX-crhB7QRYhiix03illJOVAOyck',
+    d: 'VEmDZpDXXK8p8N0Cndsxs924q6nS1RXFASRl6BfUqdw'
+  })
+
+  t.deepEqual(
+    derive('A128GCM', 128, alice, bob, { apu: Buffer.from('Alice'), apv: Buffer.from('Bob') }),
+    base64url.decodeToBuffer('VqqN6vgjbSBcIijNcacQGg')
+  )
+
+  t.deepEqual(
+    derive('A128GCM', 128, bob, alice, { apu: Buffer.from('Alice'), apv: Buffer.from('Bob') }),
+    base64url.decodeToBuffer('VqqN6vgjbSBcIijNcacQGg')
+  )
+})