Crate sensitive_fmt 

Derive Debug and Display for Rust structs while honoring sensitive field attributes. Designed for keeping PHI, PII, secrets, and tokens out of log lines.

Example

use sensitive_fmt::{SensitiveDebug, SensitiveDisplay};

#[derive(SensitiveDebug, SensitiveDisplay)]
struct Patient {
    id: u64,
    #[sensitive(truncate = 4)] mrn: String,
    #[sensitive(redact)]       email: String,
}

let p = Patient {
    id: 42,
    mrn: "MRN-12345-WXYZ".into(),
    email: "alice@example.com".into(),
};
assert_eq!(
    format!("{p}"),
    "Patient { id: 42, mrn: ****WXYZ, email: REDACTED }",
);

See the README for the full attribute reference.

Derive Macros

SensitiveDebug

SensitiveDisplay