RFC 3454 (String Preparation)

RFC 3454 defines a standardized process for preparing and normalization of Internationalized Strings, particularly for use in security-sensitive contexts like login systems and identifiers. It outlines a set of rules to remove or convert certain characters—such as whitespace, control characters, or equivalent characters—ensuring consistency and preventing confusion or impersonation. By applying these string-preparation steps, systems can reliably compare user inputs, reducing errors and enhancing security when managing international or multilingual text across different platforms.