Building an Email OTP Node in ForgeRock AM: HOTP Implementation Guide
🔐 Building a ForgeRock AM Email OTP Node with HOTP (RFC 4226) Ever needed to add Email OTP as a second factor in ForgeRock AM? Here's a production-ready implementation: ✅ RFC 4226–compliant HOTP using HmacSHA1 ✅ Two-phase AM auth node (send → verify) with configurable max attempts ✅ SMTP delivery with STARTTLS and structured logging ✅ Counter-based replay protection (each OTP valid once) ✅ All RFC 4226 Appendix D test vectors validated with JUnit 5 Clone the companion repo and deploy the shaded JAR directly into ForgeRock AM 7.x: 👉 https://github.com/IAMDevBox/forgerock-am-email-otp-node Full tutorial: https://iamdevbox.com/posts/building-an-email-otp-node-hotp-example-and-email-sending-configuration-in-forgerock-am/ #ForgeRock #ForgeRockAM #EmailOTP #HOTP #2FA #IAM #IdentityManagement #Java #Authentication Read more: Building an Email OTP Node in ForgeRock AM: HOTP Implementation Guide