Generar JWT Secret Key
node -e "console.log(require('crypto').randomBytes(256).toString('base64'));"
Curious Cardinal
node -e "console.log(require('crypto').randomBytes(256).toString('base64'));"
PrivateKey privateKey = // Load an RSA private key from configuration
Instant now = Instant.now();
String jwt = Jwts.builder()
.setAudience("https://${yourOktaDomain}/oauth2/default/v1/token")
.setIssuedAt(Date.from(now))
.setExpiration(Date.from(now.plus(5L, ChronoUnit.MINUTES)))
.setIssuer(clientId)
.setSubject(clientId)
.setId(UUID.randomUUID().toString())
.signWith(privateKey)
.compact();