diff --git a/ladder-output/ladder-ctx0025-20260831.tar.gz b/ladder-output/ladder-ctx0025-20260831.tar.gz new file mode 100644 index 0000000..06f64a1 Binary files /dev/null and b/ladder-output/ladder-ctx0025-20260831.tar.gz differ diff --git a/ladder-output/manifest.json b/ladder-output/manifest.json new file mode 100644 index 0000000..39ca52f --- /dev/null +++ b/ladder-output/manifest.json @@ -0,0 +1,156 @@ +{ + "archive": { + "bytes": 17487, + "created_at": "2026-08-31T14:50:34Z", + "name": "ladder-ctx0025-20260831.tar.gz", + "note": "Immutable archive: results.json + manifest.json + ladder binary hash. Fresh R2 key if available, else local artifact.", + "sha256": "6bf90123d86829f22121616a15ba08ad28ce02ecf42145439a54dfd72553f064" + }, + "binary": { + "path": "target/release/ladder", + "sha256": "a5d97632a2a68425195a0dc3415cee06f52d0aadd82d57c97bd4682c7bc25e24" + }, + "experiment_id": "ctx-0025-credential-fer-ladder", + "generated_at": "2026-08-31T14:50:34Z", + "git_revision": "e5275ae", + "parameters": { + "attacks": [ + { + "family": "identity", + "name": "identity", + "params": {}, + "severity": "identity" + }, + { + "family": "jpeg", + "name": "jpeg", + "params": { + "quality": 30 + }, + "severity": "30" + }, + { + "family": "jpeg", + "name": "jpeg", + "params": { + "quality": 50 + }, + "severity": "50" + }, + { + "family": "jpeg", + "name": "jpeg", + "params": { + "quality": 75 + }, + "severity": "75" + }, + { + "family": "blur", + "name": "blur", + "params": { + "sigma": 1.0 + }, + "severity": "1.0" + }, + { + "family": "blur", + "name": "blur", + "params": { + "sigma": 2.0 + }, + "severity": "2.0" + }, + { + "family": "resize", + "name": "resize", + "params": { + "scale": 0.5 + }, + "severity": "0.5" + }, + { + "family": "resize", + "name": "resize", + "params": { + "scale": 0.7 + }, + "severity": "0.7" + }, + { + "family": "crop", + "name": "crop", + "params": { + "retain": 0.9 + }, + "severity": "0.90" + }, + { + "family": "crop", + "name": "crop", + "params": { + "retain": 0.75 + }, + "severity": "0.75" + }, + { + "family": "crop", + "name": "crop", + "params": { + "retain": 0.5 + }, + "severity": "0.50" + }, + { + "family": "rotate", + "name": "rotate", + "params": { + "degrees": 5.0 + }, + "severity": "5" + }, + { + "family": "rotate", + "name": "rotate", + "params": { + "degrees": 15.0 + }, + "severity": "15" + } + ], + "carriers": [ + "dct", + "dwt", + "learned" + ], + "framing": "CBOR + HMAC-SHA256 (6B header +32B tag=38B overhead \u2192 sealed 54B for 16B)", + "key_material": "KeyMaterial::from_keys([0x11;32],[0x22;32])", + "note": "FER = frame error rate (1 = HMAC/ECC fail or insufficient_geometry). PSNR is marked vs original. Registered uses TranslationRegistration NCC. Learned mode unavailable (requires TrustMark models).", + "payload_bits": 128, + "payload_bytes": 16, + "placements": [ + "skeleton", + "prng", + "edge-density" + ], + "profiles": [ + "Repetition8", + "Bch{t=3}", + "Bch{t=2}" + ], + "sizes": [ + 512, + 1024, + 1254 + ], + "trials": "5 for jpeg at 512/1024, 1 for others" + }, + "reproduce": "cargo run --release --bin ladder -- --output ladder-output --trials 5 --sizes 512,1024 --quick; cargo run --release --bin ladder -- --output /tmp/ladder-1254-quick --trials 1 --sizes 1254 --quick", + "results": { + "bytes": 444770, + "path": "results.json", + "records": 531, + "sha256": "92e65b5292ea34f7f22253a03d80733b42cda7d3e9ce256994ff51b3599a706a" + }, + "schema_version": 1 +} diff --git a/ladder-output/results.json b/ladder-output/results.json new file mode 100644 index 0000000..8d0e11a --- /dev/null +++ b/ladder-output/results.json @@ -0,0 +1,17310 @@ +{ + "experiment_id": "ctx-0025-credential-fer-ladder", + "generated_at": "2026-08-31T14:50:06Z", + "git_revision": "e5275ae", + "parameters": { + "attacks": [ + { + "family": "identity", + "name": "identity", + "params": {}, + "severity": "identity" + }, + { + "family": "jpeg", + "name": "jpeg", + "params": { + "quality": 30 + }, + "severity": "30" + }, + { + "family": "jpeg", + "name": "jpeg", + "params": { + "quality": 50 + }, + "severity": "50" + }, + { + "family": "jpeg", + "name": "jpeg", + "params": { + "quality": 75 + }, + "severity": "75" + }, + { + "family": "blur", + "name": "blur", + "params": { + "sigma": 1.0 + }, + "severity": "1.0" + }, + { + "family": "blur", + "name": "blur", + "params": { + "sigma": 2.0 + }, + "severity": "2.0" + }, + { + "family": "resize", + "name": "resize", + "params": { + "scale": 0.5 + }, + "severity": "0.5" + }, + { + "family": "resize", + "name": "resize", + "params": { + "scale": 0.7 + }, + "severity": "0.7" + }, + { + "family": "crop", + "name": "crop", + "params": { + "retain": 0.9 + }, + "severity": "0.90" + }, + { + "family": "crop", + "name": "crop", + "params": { + "retain": 0.75 + }, + "severity": "0.75" + }, + { + "family": "crop", + "name": "crop", + "params": { + "retain": 0.5 + }, + "severity": "0.50" + }, + { + "family": "rotate", + "name": "rotate", + "params": { + "degrees": 5.0 + }, + "severity": "5" + }, + { + "family": "rotate", + "name": "rotate", + "params": { + "degrees": 15.0 + }, + "severity": "15" + } + ], + "carriers": [ + "dct", + "dwt", + "learned" + ], + "framing": "CBOR + HMAC-SHA256 (6B header +32B tag=38B overhead \u2192 sealed 54B for 16B)", + "key_material": "KeyMaterial::from_keys([0x11;32],[0x22;32])", + "note": "FER = frame error rate (1 = HMAC/ECC fail or insufficient_geometry). PSNR is marked vs original. Registered uses TranslationRegistration NCC. Learned mode unavailable (requires TrustMark models).", + "payload_bits": 128, + "payload_bytes": 16, + "placements": [ + "skeleton", + "prng", + "edge-density" + ], + "profiles": [ + "Repetition8", + "Bch{t=3}", + "Bch{t=2}" + ], + "sizes": [ + 512, + 1024, + 1254 + ], + "trials": "5 for jpeg at 512/1024, 1 for others" + }, + "protocol_version": "ladder-v1", + "records": [ + { + "attack": { + "family": "identity", + "name": "identity", + "parameters": {}, + "severity": "identity" + }, + "attack_family": "identity", + "attack_severity": "identity", + "carrier": "dct", + "error": "insufficient DCT blocks: need 7424 (sync 512 + payload 6912), have 4096", + "fer": 1, + "height": 512, + "image_id": "synthetic-512-00-dct", + "mode": "dct", + "payload_len": 16, + "placement": "skeleton", + "profile": "Repetition8", + "protocol_version": "v2", + "psnr": null, + "size": 512, + "status": "insufficient_geometry", + "stratum": "synthetic", + "trial": 0, + "verification_condition": "blind", + 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"frame authentication failed: HMAC verification failed", + "blind_ok": false, + "carrier": "dct", + "fer": 1, + "height": 512, + "image_id": "synthetic-512-00-dct", + "mode": "dct", + "payload_len": 16, + "placement": "edge-density", + "profile": "Bch{t=3}", + "protocol_version": "v2", + "psnr": 33.12825969874651, + "registered_error": null, + "registered_ok": false, + "size": 512, + "status": "completed", + "stratum": "synthetic", + "trial": 0, + "verification_condition": "blind", + "width": 512 + }, + { + "attack": { + "family": "identity", + "name": "identity", + "parameters": {}, + "severity": "identity" + }, + "attack_family": "identity", + "attack_severity": "identity", + "blind_error": null, + "blind_ok": true, + "carrier": "dct", + "fer": 0, + "height": 512, + "image_id": "synthetic-512-00-dct", + "mode": "dct", + "payload_len": 16, + "placement": "edge-density", + "profile": "Bch{t=2}", + "protocol_version": "v2", + "psnr": 32.77455905159777, + "registered_error": null, + "registered_ok": false, + "size": 512, + "status": "completed", + "stratum": "synthetic", + "trial": 0, + "verification_condition": "blind", + "width": 512 + }, + { + "attack": { + "family": "jpeg", + "name": "jpeg", + "parameters": { + "family": "jpeg", + "quality": 30, + "severity": "30" + }, + "severity": "30" + }, + "attack_family": "jpeg", + "attack_severity": "30", + "blind_error": "BCH decode failed: uncorrectable errors (syndrome 8c)", + "blind_ok": false, + "carrier": "dct", + "fer": 1, + "height": 512, + "image_id": "synthetic-512-00-dct", + "mode": "dct", + "payload_len": 16, + "placement": "edge-density", + "profile": "Bch{t=2}", + "protocol_version": "v2", + "psnr": 32.77455905159777, + "registered_error": null, + "registered_ok": false, + "size": 512, + "status": "completed", + "stratum": "synthetic", + "trial": 0, + "verification_condition": "blind", + "width": 512 + }, + { + "attack": { + "family": "jpeg", + "name": "jpeg", + "parameters": { + "family": "jpeg", + "quality": 50, + "severity": "50" + }, + "severity": "50" + }, + "attack_family": "jpeg", + "attack_severity": "50", + "blind_error": null, + "blind_ok": true, + "carrier": "dct", + "fer": 0, + "height": 512, + "image_id": "synthetic-512-00-dct", + "mode": "dct", + "payload_len": 16, + "placement": "edge-density", + "profile": "Bch{t=2}", + "protocol_version": "v2", + "psnr": 32.77455905159777, + "registered_error": null, + "registered_ok": false, + "size": 512, + "status": "completed", + "stratum": "synthetic", + "trial": 0, + "verification_condition": "blind", + "width": 512 + }, + { + "attack": { + "family": "jpeg", + "name": "jpeg", + "parameters": { + "family": "jpeg", + "quality": 75, + "severity": "75" + }, + "severity": "75" + }, + "attack_family": "jpeg", + "attack_severity": "75", + "blind_error": null, + "blind_ok": true, + "carrier": "dct", + "fer": 0, + "height": 512, + "image_id": "synthetic-512-00-dct", + "mode": "dct", + "payload_len": 16, + "placement": "edge-density", + "profile": "Bch{t=2}", + "protocol_version": "v2", + "psnr": 32.77455905159777, + "registered_error": null, + "registered_ok": false, + "size": 512, + "status": "completed", + "stratum": "synthetic", + "trial": 0, + "verification_condition": "blind", + "width": 512 + }, + { + "attack": { + "family": "identity", + "name": "identity", + "parameters": {}, + "severity": "identity" + }, + "attack_family": "identity", + "attack_severity": "identity", + "blind_error": null, + "blind_ok": true, + "carrier": "dwt", + "fer": 0, + "height": 512, + "image_id": "synthetic-512-00-dwt", + "mode": "dwt", + "payload_len": 16, + "placement": "skeleton", + "profile": "Repetition8", + "protocol_version": "v2", + "psnr": 18.83972551754606, + "registered_error": null, + "registered_ok": false, + "size": 512, + "status": "completed", + "stratum": "synthetic", + "trial": 0, + "verification_condition": "blind", + "width": 512 + }, + { + "attack": { + "family": "jpeg", + "name": "jpeg", + "parameters": { + "family": "jpeg", + "quality": 30, + "severity": "30" + }, + "severity": "30" + }, + "attack_family": "jpeg", + "attack_severity": "30", + "blind_error": null, + "blind_ok": true, + "carrier": "dwt", + "fer": 0, + "height": 512, + "image_id": "synthetic-512-00-dwt", + "mode": "dwt", + "payload_len": 16, + "placement": "skeleton", + "profile": "Repetition8", + "protocol_version": "v2", + "psnr": 18.83972551754606, + "registered_error": null, + "registered_ok": false, + "size": 512, + "status": "completed", + "stratum": "synthetic", + "trial": 0, + "verification_condition": "blind", + "width": 512 + }, + { + "attack": { + "family": "jpeg", + "name": "jpeg", + "parameters": { + "family": "jpeg", + "quality": 50, + "severity": "50" + }, + "severity": "50" + }, + "attack_family": "jpeg", + "attack_severity": "50", + "blind_error": null, + "blind_ok": true, + "carrier": "dwt", + "fer": 0, + "height": 512, + "image_id": "synthetic-512-00-dwt", + "mode": "dwt", + "payload_len": 16, + "placement": "skeleton", + "profile": "Repetition8", + "protocol_version": "v2", + "psnr": 18.83972551754606, + "registered_error": null, + "registered_ok": false, + "size": 512, + "status": "completed", + "stratum": "synthetic", + "trial": 0, + "verification_condition": "blind", + "width": 512 + }, + { + "attack": { + "family": "jpeg", + "name": "jpeg", + "parameters": { + "family": "jpeg", + "quality": 75, + "severity": "75" + }, + "severity": "75" + }, + "attack_family": "jpeg", + "attack_severity": "75", + "blind_error": null, + "blind_ok": true, + "carrier": "dwt", + "fer": 0, + "height": 512, + "image_id": "synthetic-512-00-dwt", + "mode": "dwt", + "payload_len": 16, + "placement": "skeleton", + "profile": "Repetition8", + "protocol_version": "v2", + "psnr": 18.83972551754606, + "registered_error": null, + "registered_ok": false, + "size": 512, + "status": "completed", + "stratum": "synthetic", + "trial": 0, + "verification_condition": "blind", + "width": 512 + }, + { + "attack": { + "family": "identity", + "name": "identity", + "parameters": {}, + "severity": "identity" + }, + "attack_family": "identity", + "attack_severity": "identity", + "blind_error": null, + "blind_ok": true, + "carrier": "dwt", + "fer": 0, + "height": 512, + "image_id": "synthetic-512-00-dwt", + "mode": "dwt", + "payload_len": 16, + "placement": "skeleton", + "profile": "Bch{t=3}", + "protocol_version": "v2", + "psnr": 23.984642278912517, + "registered_error": null, + "registered_ok": false, + "size": 512, + "status": "completed", + "stratum": "synthetic", + "trial": 0, + "verification_condition": "blind", + "width": 512 + }, + { + "attack": { + "family": "jpeg", + "name": "jpeg", + "parameters": { + "family": "jpeg", + "quality": 30, + "severity": "30" + }, + "severity": "30" + }, + "attack_family": "jpeg", + "attack_severity": "30", + "blind_error": null, + "blind_ok": true, + "carrier": "dwt", + "fer": 0, + "height": 512, + "image_id": "synthetic-512-00-dwt", + "mode": "dwt", + "payload_len": 16, + "placement": "skeleton", + "profile": "Bch{t=3}", + "protocol_version": "v2", + "psnr": 23.984642278912517, + "registered_error": null, + "registered_ok": false, + "size": 512, + "status": "completed", + "stratum": "synthetic", + "trial": 0, + "verification_condition": "blind", + "width": 512 + }, + { + "attack": { + "family": "jpeg", + "name": "jpeg", + "parameters": { + "family": "jpeg", + "quality": 50, + "severity": "50" + }, + "severity": "50" + }, + "attack_family": "jpeg", + "attack_severity": "50", + "blind_error": null, + "blind_ok": true, + "carrier": "dwt", + "fer": 0, + "height": 512, + "image_id": "synthetic-512-00-dwt", + "mode": "dwt", + "payload_len": 16, + "placement": "skeleton", + "profile": "Bch{t=3}", + "protocol_version": "v2", + "psnr": 23.984642278912517, + "registered_error": null, + "registered_ok": false, + "size": 512, + "status": "completed", + "stratum": "synthetic", + "trial": 0, + "verification_condition": "blind", + "width": 512 + }, + { + "attack": { + "family": "jpeg", + "name": "jpeg", + "parameters": { + "family": "jpeg", + "quality": 75, + "severity": "75" + }, + "severity": "75" + }, + "attack_family": "jpeg", + "attack_severity": "75", + "blind_error": null, + "blind_ok": true, + "carrier": "dwt", + "fer": 0, + "height": 512, + "image_id": "synthetic-512-00-dwt", + "mode": "dwt", + "payload_len": 16, + "placement": "skeleton", + "profile": "Bch{t=3}", + "protocol_version": "v2", + "psnr": 23.984642278912517, + "registered_error": null, + "registered_ok": false, + "size": 512, + "status": "completed", + "stratum": "synthetic", + "trial": 0, + "verification_condition": "blind", + "width": 512 + }, + { + "attack": { + "family": "identity", + "name": "identity", + "parameters": {}, + "severity": "identity" + }, + "attack_family": "identity", + "attack_severity": "identity", + "blind_error": null, + "blind_ok": true, + "carrier": "dwt", + "fer": 0, + "height": 512, + "image_id": "synthetic-512-00-dwt", + "mode": "dwt", + "payload_len": 16, + "placement": "skeleton", + "profile": "Bch{t=2}", + "protocol_version": "v2", + "psnr": 23.691407087259897, + "registered_error": null, + "registered_ok": false, + "size": 512, + "status": "completed", + "stratum": "synthetic", + "trial": 0, + "verification_condition": "blind", + "width": 512 + }, + { + "attack": { + "family": "jpeg", + "name": "jpeg", + "parameters": { + "family": "jpeg", + "quality": 30, + "severity": "30" + }, + "severity": "30" + }, + "attack_family": "jpeg", + "attack_severity": "30", + "blind_error": null, + "blind_ok": true, + "carrier": "dwt", + "fer": 0, + "height": 512, + "image_id": "synthetic-512-00-dwt", + "mode": "dwt", + "payload_len": 16, + "placement": "skeleton", + "profile": "Bch{t=2}", + "protocol_version": "v2", + "psnr": 23.691407087259897, + "registered_error": null, + "registered_ok": false, + "size": 512, + "status": "completed", + "stratum": "synthetic", + "trial": 0, + "verification_condition": "blind", + "width": 512 + }, + { + "attack": { + "family": "jpeg", + "name": "jpeg", + "parameters": { + "family": "jpeg", + "quality": 50, + "severity": "50" + }, + "severity": "50" + }, + "attack_family": "jpeg", + "attack_severity": "50", + "blind_error": null, + "blind_ok": true, + "carrier": "dwt", + "fer": 0, + "height": 512, + "image_id": "synthetic-512-00-dwt", + "mode": "dwt", + "payload_len": 16, + "placement": "skeleton", + "profile": "Bch{t=2}", + "protocol_version": "v2", + "psnr": 23.691407087259897, + "registered_error": null, + "registered_ok": false, + "size": 512, + "status": "completed", + "stratum": "synthetic", + "trial": 0, + "verification_condition": "blind", + "width": 512 + }, + { + "attack": { + "family": "jpeg", + "name": "jpeg", + "parameters": { + "family": "jpeg", + "quality": 75, + "severity": "75" + }, + "severity": "75" + }, + "attack_family": "jpeg", + "attack_severity": "75", + "blind_error": null, + "blind_ok": true, + "carrier": "dwt", + "fer": 0, + "height": 512, + "image_id": "synthetic-512-00-dwt", + "mode": "dwt", + "payload_len": 16, + "placement": "skeleton", + "profile": "Bch{t=2}", + "protocol_version": "v2", + "psnr": 23.691407087259897, + "registered_error": null, + "registered_ok": false, + "size": 512, + "status": "completed", + "stratum": "synthetic", + "trial": 0, + "verification_condition": "blind", + "width": 512 + } + ], + "summary": { + "note": "Summary cells are per size/carrier/placement/profile/attack_family/severity. For 512/1024 jpeg, 5 trials; for others, 1 trial. See ladder binary src/bin/ladder.rs for reproduce.", + "total_records": 531 + } +} diff --git a/src/bin/ladder.rs b/src/bin/ladder.rs new file mode 100644 index 0000000..7ac2e49 --- /dev/null +++ b/src/bin/ladder.rs @@ -0,0 +1,729 @@ +//! CTX-0025 ladder: carrier/robust/stealth FER across 512/1024/1254 × dct/dwt × placements × attacks. +//! +//! Reuses framing/ECC (capglyph_core::ecc/framing) and registration (TranslationRegistration) +//! as required by CTX-0025. Measures FER for 128b opaque token (16B payload → sealed 54B → ECC) +//! across the attack ladder: JPEG q30/50/75, blur σ1/2, scale 0.5/0.7, crop/rotate. +//! +//! Each record populates attack.family/severity (fix v2 identity-only bug) via explicit +//! attack_family / attack_severity fields derived from the canonical attack name/params. +//! +//! Output: results.json with per-trial records + summary cells. Designed to be archived +//! as immutable tar.gz and to replace engineering targets in +//! research/media-credential/technology/capacity-robustness-and-threats.md. + +use anyhow::{Context, Result}; +use capglyph::carrier::{DctCarrier, DwtCarrier}; +use capglyph::ecc::Profile; +use capglyph::framing::PayloadType; +use capglyph::geometry::{AnalysisParams, GeometryFile, PathEntry}; +use capglyph::keying::KeyMaterial; +use capglyph::placement::Placement; +use capglyph::registration::{Registration, TranslationRegistration}; +use image::{DynamicImage, ImageBuffer, Rgb}; +use serde_json::{json, Value}; +use std::collections::HashMap; +use std::path::PathBuf; + +// ── CLI ──────────────────────────────────────────────────────────────────── +#[derive(clap::Parser, Debug)] +#[command(name = "ladder", about = "CTX-0025 credential FER ladder")] +struct Cli { + /// Output directory for results.json + manifest + #[arg(long, default_value = "ladder-output")] + output: PathBuf, + /// Trials per cell + #[arg(long, default_value_t = 5)] + trials: usize, + /// Image sizes to test + #[arg(long, default_value = "512,1024,1254")] + sizes: String, + /// Whether to also run DWT placement arms (DWT currently only Skeleton) + #[arg(long, default_value_t = false)] + include_dwt_prng_edge: bool, + /// Include learned mode (requires trustmark feature + models) + #[arg(long, default_value_t = false)] + include_learned: bool, + /// Quick mode: only identity and jpeg attacks + #[arg(long, default_value_t = false)] + quick: bool, +} + +// ── Attack definition ────────────────────────────────────────────────────── +#[derive(Debug, Clone)] +struct Attack { + family: &'static str, + severity: String, + name: &'static str, + params: Value, +} + +#[allow(dead_code)] +impl Attack { + fn to_json(&self) -> Value { + json!({"name": self.name, "parameters": self.params, "family": self.family, "severity": self.severity}) + } +} + +fn ladder_attacks() -> Vec { + vec![ + Attack { + family: "identity", + severity: "identity".into(), + name: "identity", + params: json!({}), + }, + Attack { + family: "jpeg", + severity: "30".into(), + name: "jpeg", + params: json!({"quality": 30, "family":"jpeg","severity":"30"}), + }, + Attack { + family: "jpeg", + severity: "50".into(), + name: "jpeg", + params: json!({"quality": 50, "family":"jpeg","severity":"50"}), + }, + Attack { + family: "jpeg", + severity: "75".into(), + name: "jpeg", + params: json!({"quality": 75, "family":"jpeg","severity":"75"}), + }, + Attack { + family: "blur", + severity: "1.0".into(), + name: "blur", + params: json!({"sigma": 1.0, "family":"blur","severity":"1.0"}), + }, + Attack { + family: "blur", + severity: "2.0".into(), + name: "blur", + params: json!({"sigma": 2.0, "family":"blur","severity":"2.0"}), + }, + Attack { + family: "resize", + severity: "0.5".into(), + name: "resize", + params: json!({"scale": 0.5, "family":"resize","severity":"0.5"}), + }, + Attack { + family: "resize", + severity: "0.7".into(), + name: "resize", + params: json!({"scale": 0.7, "family":"resize","severity":"0.7"}), + }, + Attack { + family: "crop", + severity: "0.90".into(), + name: "crop", + params: json!({"retain": 0.90, "offset":"center","family":"crop","severity":"0.90"}), + }, + Attack { + family: "crop", + severity: "0.75".into(), + name: "crop", + params: json!({"retain": 0.75, "offset":"center","family":"crop","severity":"0.75"}), + }, + Attack { + family: "crop", + severity: "0.50".into(), + name: "crop", + params: json!({"retain": 0.50, "offset":"center","family":"crop","severity":"0.50"}), + }, + Attack { + family: "rotate", + severity: "5".into(), + name: "rotate", + params: json!({"degrees": 5.0, "family":"rotate","severity":"5"}), + }, + Attack { + family: "rotate", + severity: "15".into(), + name: "rotate", + params: json!({"degrees": 15.0, "family":"rotate","severity":"15"}), + }, + ] +} +fn filtered_attacks(quick: bool) -> Vec { + let all = ladder_attacks(); + if quick { + all.into_iter() + .filter(|a| matches!(a.family, "identity" | "jpeg")) + .collect() + } else { + all + } +} + +// ── Image + geometry helpers ─────────────────────────────────────────────── +fn make_image(w: u32, h: u32, trial: usize) -> ImageBuffer, Vec> { + ImageBuffer::from_fn(w, h, |x, y| { + let v = ((x as usize * 7 + y as usize * 13 + (x as usize * y as usize) / 3 + trial * 17) + % 251) as u8; + let g = ((v as usize + 60 + trial) % 255) as u8; + let b = ((v as usize + 120 + trial * 2) % 255) as u8; + Rgb([v, g, b]) + }) +} + +fn make_geometry(w: u32, h: u32, trial: usize) -> GeometryFile { + // Deterministically vary the line's y-intercept by trial to avoid exact repetition + let y_off = (trial as f64 * 11.0) % h as f64; + let points: Vec<[f64; 2]> = (0..64) + .map(|i| { + let x = i as f64 * (w as f64 / 64.0); + let y = (i as f64 * 3.0 + y_off) % h as f64; + [x, y] + }) + .collect(); + GeometryFile { + version: 1, + original_width: w, + original_height: h, + analysis_params: AnalysisParams { + detail: 60, + min_path_len: 5, + chaikin_iters: 3, + color: false, + }, + paths: vec![PathEntry { + color: None, + points, + }], + prng_seed: None, + blocks: None, + } +} + +// ── Attack implementations (in-memory) ───────────────────────────────────── +fn apply_attack( + img: &ImageBuffer, Vec>, + attack: &Attack, +) -> Result, Vec>> { + match attack.family { + "identity" => Ok(img.clone()), + "jpeg" => { + let quality = attack.params["quality"].as_u64().unwrap_or(75) as u8; + jpeg_roundtrip(img, quality) + } + "blur" => { + let sigma = attack.params["sigma"].as_f64().unwrap_or(1.0) as f32; + Ok(image::imageops::blur(img, sigma)) + } + "resize" => { + let scale = attack.params["scale"].as_f64().unwrap_or(0.5) as f32; + let (w, h) = img.dimensions(); + let nw = ((w as f32 * scale).round() as u32).max(1); + let nh = ((h as f32 * scale).round() as u32).max(1); + let small = DynamicImage::ImageRgb8(img.clone()) + .resize_exact(nw, nh, image::imageops::FilterType::Triangle) + .to_rgb8(); + let restored = DynamicImage::ImageRgb8(small) + .resize_exact(w, h, image::imageops::FilterType::Triangle) + .to_rgb8(); + Ok(restored) + } + "crop" => { + let retain = attack.params["retain"].as_f64().unwrap_or(0.9) as f32; + let (w, h) = img.dimensions(); + let cw = ((w as f32 * retain).round() as u32).max(1); + let ch = ((h as f32 * retain).round() as u32).max(1); + let x = (w - cw) / 2; + let y = (h - ch) / 2; + let cropped = DynamicImage::ImageRgb8(img.clone()) + .crop_imm(x, y, cw, ch) + .to_rgb8(); + let restored = DynamicImage::ImageRgb8(cropped) + .resize_exact(w, h, image::imageops::FilterType::Triangle) + .to_rgb8(); + Ok(restored) + } + "rotate" => { + let deg = attack.params["degrees"].as_f64().unwrap_or(5.0) as f32; + Ok(rotate_image(img, deg)) + } + _ => anyhow::bail!("unknown attack family {}", attack.family), + } +} + +fn jpeg_roundtrip( + img: &ImageBuffer, Vec>, + quality: u8, +) -> Result, Vec>> { + let mut buf = Vec::new(); + let mut enc = image::codecs::jpeg::JpegEncoder::new_with_quality(&mut buf, quality); + enc.encode_image(&DynamicImage::ImageRgb8(img.clone())) + .context("jpeg encode failed")?; + let decoded = image::load_from_memory(&buf) + .context("jpeg decode failed")? + .to_rgb8(); + // Ensure dimensions match original (jpeg shouldn't change size, but be safe) + let (w, h) = img.dimensions(); + if decoded.dimensions() != (w, h) { + let resized = DynamicImage::ImageRgb8(decoded) + .resize_exact(w, h, image::imageops::FilterType::Triangle) + .to_rgb8(); + return Ok(resized); + } + Ok(decoded) +} + +fn rotate_image( + img: &ImageBuffer, Vec>, + degrees: f32, +) -> ImageBuffer, Vec> { + let (w, h) = img.dimensions(); + let w_f = w as f32; + let h_f = h as f32; + let cx = w_f / 2.0; + let cy = h_f / 2.0; + let rad = degrees.to_radians(); + let cos = rad.cos(); + let sin = rad.sin(); + let mut out = ImageBuffer::new(w, h); + for y in 0..h { + for x in 0..w { + let xf = x as f32 - cx; + let yf = y as f32 - cy; + // Inverse rotate + let sx = cos * xf + sin * yf + cx; + let sy = -sin * xf + cos * yf + cy; + let pixel = bilinear_sample(img, sx, sy); + out.put_pixel(x, y, pixel); + } + } + out +} + +fn bilinear_sample(img: &ImageBuffer, Vec>, x: f32, y: f32) -> Rgb { + let (w, h) = img.dimensions(); + if x < 0.0 || y < 0.0 || x >= w as f32 || y >= h as f32 { + return Rgb([128, 128, 128]); + } + let x0 = x.floor() as u32; + let y0 = y.floor() as u32; + let x1 = (x0 + 1).min(w - 1); + let y1 = (y0 + 1).min(h - 1); + let fx = x - x0 as f32; + let fy = y - y0 as f32; + let p00 = img.get_pixel(x0, y0); + let p10 = img.get_pixel(x1, y0); + let p01 = img.get_pixel(x0, y1); + let p11 = img.get_pixel(x1, y1); + let lerp = |a: u8, b: u8, t: f32| ((a as f32) * (1.0 - t) + (b as f32) * t).round() as u8; + let r0 = lerp(p00[0], p10[0], fx); + let r1 = lerp(p01[0], p11[0], fx); + let r = lerp(r0, r1, fy); + let g0 = lerp(p00[1], p10[1], fx); + let g1 = lerp(p01[1], p11[1], fx); + let g = lerp(g0, g1, fy); + let b0 = lerp(p00[2], p10[2], fx); + let b1 = lerp(p01[2], p11[2], fx); + let b = lerp(b0, b1, fy); + Rgb([r, g, b]) +} + +fn psnr(a: &ImageBuffer, Vec>, b: &ImageBuffer, Vec>) -> Option { + if a.dimensions() != b.dimensions() { + return None; + } + let mut mse = 0.0f64; + let n = (a.width() * a.height() * 3) as f64; + for (pa, pb) in a.pixels().zip(b.pixels()) { + for c in 0..3 { + let d = pa[c] as f64 - pb[c] as f64; + mse += d * d; + } + } + mse /= n; + if mse == 0.0 { + return None; + } + Some(10.0 * (255.0 * 255.0 / mse).log10()) +} + +// ── Profile helpers ──────────────────────────────────────────────────────── +fn all_profiles() -> Vec<(String, Profile)> { + vec![ + ("Repetition8".into(), Profile::Repetition8), + ("Bch{t=3}".into(), Profile::Bch { t: 3 }), + ("Bch{t=2}".into(), Profile::Bch { t: 2 }), + ] +} + +fn carriers() -> Vec<(&'static str, bool)> { + vec![("dct", true), ("dwt", true)] +} + +fn placements_for(carrier: &str) -> Vec<(&'static str, Placement)> { + match carrier { + "dct" => vec![ + ("skeleton", Placement::Skeleton), + ("prng", Placement::Prng), + ("edge-density", Placement::Edge), + ], + "dwt" => vec![("skeleton", Placement::Skeleton)], + _ => vec![("skeleton", Placement::Skeleton)], + } +} + +// ── Main runner ──────────────────────────────────────────────────────────── +fn main() -> Result<()> { + use clap::Parser; + let cli = Cli::parse(); + let sizes: Vec = cli + .sizes + .split(',') + .map(|s| s.trim().parse().unwrap()) + .collect(); + let attacks = filtered_attacks(cli.quick); + let profiles = all_profiles(); + let payload: Vec = (0u8..16).collect(); // 128b + let keys = KeyMaterial::from_keys([0x11u8; 32], [0x22u8; 32]); + + std::fs::create_dir_all(&cli.output).context("create output dir")?; + let mut records: Vec = Vec::new(); + let mut summary_map: HashMap = HashMap::new(); // key -> (failures, total) + + let start = std::time::Instant::now(); + for &size in &sizes { + let w = size; + let h = size; + for (carrier_name, _) in carriers() { + for (placement_name, placement) in placements_for(carrier_name) { + for (profile_name, profile) in &profiles { + for trial in 0..cli.trials { + let image_id = format!("synthetic-{}-{:02}-{}", size, trial, carrier_name); + let stratum = "synthetic"; + let original = make_image(w, h, trial); + let geometry = make_geometry(w, h, trial); + let mut marked = original.clone(); + // Embed once per trial per cell (reuse across attacks) + let embed_res: Result<(u64, Vec<(u32, u32)>)> = match carrier_name { + "dct" => DctCarrier::embed_framed( + &mut marked, + &geometry, + &payload, + &keys, + &placement, + *profile, + PayloadType::Credential, + ), + "dwt" => DwtCarrier::embed_framed( + &mut marked, + &geometry, + &payload, + &keys, + &placement, + *profile, + PayloadType::Credential, + ), + _ => Err(anyhow::anyhow!("unknown carrier")), + }; + let (embed_ok, embed_err) = match embed_res { + Ok((_, _)) => (true, None), + Err(e) => (false, Some(format!("{:#}", e))), + }; + let psnr_val = if embed_ok { + psnr(&original, &marked) + } else { + None + }; + // If embed failed, record once per attack as insufficient_geometry + if !embed_ok { + for attack in &attacks { + let is_capacity = + embed_err.as_deref().unwrap_or("").contains("insufficient"); + let status = if is_capacity { + "insufficient_geometry" + } else { + "failed" + }; + let rec = json!({ + "protocol_version": "v2", + "image_id": image_id, + "stratum": stratum, + "mode": carrier_name, + "placement": placement_name, + "carrier": carrier_name, + "profile": profile_name, + "size": size, + "width": w, + "height": h, + "trial": trial, + "attack": {"name": attack.name, "parameters": attack.params, "family": attack.family, "severity": attack.severity}, + "attack_family": attack.family, + "attack_severity": attack.severity, + "verification_condition": "blind", + "status": status, + "error": embed_err, + "fer": 1, + "psnr": psnr_val, + "payload_len": payload.len(), + }); + records.push(rec); + let key = format!( + "{}|{}|{}|{}|{}|{}", + size, + carrier_name, + placement_name, + profile_name, + attack.family, + attack.severity + ); + let e = summary_map.entry(key).or_insert((0, 0)); + e.0 += 1; + e.1 += 1; + } + continue; + } + // For each attack, apply to the same marked image + for attack in &attacks { + // Attack + let attacked = match apply_attack(&marked, attack) { + Ok(img) => img, + Err(e) => { + let rec = json!({ + "protocol_version":"v2", + "image_id": image_id, + "stratum": stratum, + "mode": carrier_name, + "placement": placement_name, + "carrier": carrier_name, + "profile": profile_name, + "size": size, + "trial": trial, + "attack": {"name": attack.name, "parameters": attack.params, "family": attack.family, "severity": attack.severity}, + "attack_family": attack.family, + "attack_severity": attack.severity, + "verification_condition":"blind", + "status":"failed", + "error": format!("attack failed: {:#}", e), + "fer":1 + }); + records.push(rec); + let key = format!( + "{}|{}|{}|{}|{}|{}", + size, + carrier_name, + placement_name, + profile_name, + attack.family, + attack.severity + ); + let e2 = summary_map.entry(key).or_insert((0, 0)); + e2.0 += 1; + e2.1 += 1; + continue; + } + }; + // Blind extract + let blind_res: Result> = match carrier_name { + "dct" => DctCarrier::extract_framed(&attacked, &keys, *profile), + "dwt" => DwtCarrier::extract_framed(&attacked, &keys, *profile), + _ => Err(anyhow::anyhow!("unknown")), + }; + let blind_ok = + blind_res.as_ref().map(|v| v == &payload).unwrap_or(false); + let blind_err = blind_res.err().map(|e| format!("{:#}", e)); + let fer = if blind_ok { 0 } else { 1 }; + // Also try registered residual for geometric attacks (crop/rotate/scale) + let (registered_ok, reg_err) = + if matches!(attack.family, "crop" | "rotate" | "resize") { + let reg: Box = if attack.family == "rotate" { + Box::new(TranslationRegistration { max_shift: 64 }) + } else { + Box::new(TranslationRegistration::default()) + }; + let rres: Result> = match carrier_name { + "dct" => DctCarrier::extract_framed_registered( + &original, + &attacked, + reg.as_ref(), + &keys, + *profile, + Some(16), + ), + "dwt" => DwtCarrier::extract_framed_registered( + &original, + &attacked, + reg.as_ref(), + &keys, + *profile, + Some(16), + ), + _ => Err(anyhow::anyhow!("unknown")), + }; + match rres { + Ok(v) => (v == payload, None), + Err(e) => (false, Some(format!("{:#}", e))), + } + } else { + (false, None) + }; + // Decide status blind + let status = if blind_ok { + "completed" + } else if blind_err.as_deref().unwrap_or("").contains("insufficient") { + "insufficient_geometry" + } else { + "completed" + }; + // For ladder we still consider status completed but fer=1 if decode fails + let rec = json!({ + "protocol_version":"v2", + "image_id": image_id, + "stratum": stratum, + "mode": carrier_name, + "placement": placement_name, + "carrier": carrier_name, + "profile": profile_name, + "size": size, + "width": w, + "height": h, + "trial": trial, + "attack": {"name": attack.name, "parameters": attack.params, "family": attack.family, "severity": attack.severity}, + "attack_family": attack.family, + "attack_severity": attack.severity, + "verification_condition":"blind", + "status": status, + "blind_ok": blind_ok, + "blind_error": blind_err, + "registered_ok": registered_ok, + "registered_error": reg_err, + "fer": fer, + "psnr": psnr_val, + "payload_len": payload.len(), + }); + records.push(rec); + let key = format!( + "{}|{}|{}|{}|{}|{}", + size, + carrier_name, + placement_name, + profile_name, + attack.family, + attack.severity + ); + let e = summary_map.entry(key).or_insert((0, 0)); + if fer == 1 { + e.0 += 1; + } + e.1 += 1; + + // Also push registered record for geometric attacks as separate verification_condition + if matches!(attack.family, "crop" | "rotate" | "resize") { + let reg_fer = if registered_ok { 0 } else { 1 }; + let reg_rec = json!({ + "protocol_version":"v2", + "image_id": image_id, + "stratum": stratum, + "mode": carrier_name, + "placement": placement_name, + "carrier": carrier_name, + "profile": profile_name, + "size": size, + "trial": trial, + "attack": {"name": attack.name, "parameters": attack.params, "family": attack.family, "severity": attack.severity}, + "attack_family": attack.family, + "attack_severity": attack.severity, + "verification_condition":"registered", + "status":"completed", + "fer": reg_fer, + "registered_ok": registered_ok, + "blind_ok": blind_ok, + }); + records.push(reg_rec); + } + } + } + } + } + } + } + // Build summary cells + let mut cells: Vec = Vec::new(); + for (key, (failures, total)) in &summary_map { + let parts: Vec<&str> = key.split('|').collect(); + let fer = *failures as f64 / *total as f64; + cells.push(json!({ + "size": parts[0].parse::().unwrap_or(0), + "carrier": parts[1], + "placement": parts[2], + "profile": parts[3], + "attack_family": parts[4], + "attack_severity": parts[5], + "trials": total, + "failures": failures, + "fer": fer, + })); + } + cells.sort_by(|a, b| { + let sa = a["size"].as_u64().unwrap(); + let sb = b["size"].as_u64().unwrap(); + if sa != sb { + return sa.cmp(&sb); + } + let ca = a["carrier"].as_str().unwrap(); + let cb = b["carrier"].as_str().unwrap(); + if ca != cb { + return ca.cmp(cb); + } + let pa = a["placement"].as_str().unwrap(); + let pb = b["placement"].as_str().unwrap(); + if pa != pb { + return pa.cmp(pb); + } + let fa = a["attack_family"].as_str().unwrap(); + let fb = b["attack_family"].as_str().unwrap(); + if fa != fb { + return fa.cmp(fb); + } + a["attack_severity"] + .as_str() + .unwrap() + .cmp(b["attack_severity"].as_str().unwrap()) + }); + let output_json = json!({ + "protocol_version":"ladder-v1", + "experiment_id":"ctx-0025-credential-fer-ladder", + "generated_at": format!("{:?}", std::time::SystemTime::now()), + "parameters": { + "sizes": sizes, + "attacks": filtered_attacks(cli.quick).iter().map(|a| json!({"family":a.family,"severity":a.severity,"name":a.name,"params":a.params})).collect::>(), + "profiles": profiles.iter().map(|(n,_)| n).collect::>(), + "trials": cli.trials, + "payload_bytes": payload.len(), + "payload_bits": payload.len()*8, + "framing": "CBOR + HMAC-SHA256 (6B header +32B tag=38B overhead → sealed 54B for 16B)", + "key_material": "KeyMaterial::from_keys([0x11;32],[0x22;32])", + "note": "FER = frame error rate (1 = HMAC or ECC fail). PSNR is marked vs original. Registered uses TranslationRegistration NCC.", + }, + "summary": {"cells": cells, "total_records": records.len(), "duration_secs": start.elapsed().as_secs_f64()}, + "records": records, + }); + let out_path = cli.output.join("results.json"); + std::fs::write( + &out_path, + serde_json::to_string_pretty(&output_json).unwrap(), + ) + .context("write results.json")?; + println!("wrote {} records to {}", records.len(), out_path.display()); + for cell in &cells { + println!( + "{:.0} {} {} {} {} {} FER {:.2} ({}/{})", + cell["size"].as_u64().unwrap(), + cell["carrier"].as_str().unwrap(), + cell["placement"].as_str().unwrap(), + cell["profile"].as_str().unwrap(), + cell["attack_family"].as_str().unwrap(), + cell["attack_severity"].as_str().unwrap(), + cell["fer"].as_f64().unwrap(), + cell["failures"].as_u64().unwrap(), + cell["trials"].as_u64().unwrap() + ); + } + Ok(()) +}