Password Hash Migration Between Identity Platforms: A Practical Guide
Every IAM migration eventually hits the password problem. Users have passwords stored as cryptographic hashes in the old system. You need those users in the new system without forcing all of them to reset their passwords on Day 1. Depending on the source and target platforms, this ranges from straightforward to genuinely painful. The Core Problem Password hashes are one-way functions by design. You can’t reverse a bcrypt hash back to the original password. This means you have three options when migrating between identity platforms: ...