feat(auth): update interaction hash method (interledger#1908)

Co-authored-by: Nathan Lie <[email protected]>

Author: njlie

packages/auth/src/interaction/routes.test.ts

@@ -295,7 +295,7 @@ describe('Interaction Routes', (): void => {
         const grantRequestUrl = config.authServerDomain + `/`
 
         const data = `${clientNonce}\n${interactNonce}\n${interactRef}\n${grantRequestUrl}`
-        const hash = crypto.createHash('sha3-512').update(data).digest('base64')
+        const hash = crypto.createHash('sha-256').update(data).digest('base64')
         clientRedirectUri.searchParams.set('hash', hash)
         assert.ok(interactRef)
         clientRedirectUri.searchParams.set('interact_ref', interactRef)

packages/auth/src/interaction/routes.ts

@@ -256,7 +256,7 @@ async function finishInteraction(
       // https://datatracker.ietf.org/doc/html/draft-ietf-gnap-core-protocol#section-4.2.3
       const data = `${clientNonce}\n${interactNonce}\n${interactRef}\n${grantRequestUrl}`
 
-      const hash = crypto.createHash('sha3-512').update(data).digest('base64')
+      const hash = crypto.createHash('sha-256').update(data).digest('base64')
       clientRedirectUri.searchParams.set('hash', hash)
       clientRedirectUri.searchParams.set('interact_ref', interactRef)
       ctx.redirect(clientRedirectUri.toString())