0be354a920
Single-commit clean baseline after security scrub of niche-tells, project codenames, internal jargon, and contributor-email leaks. Contents: - 100 Rust crates (_primitives/_rust/) - 37 agent manifests (_manifests/) + generated specs (_generated/) - 67 user-invocable skills (skills/) - 33 hooks (hooks/) - Composition blocks (_blocks/) - Documentation (docs/, README.md) - TS adapter packages (_ts_packages/) - Assembler (_assembler/) - Roles (_roles/) - Templates (_templates/) - Forgejo CI (.forgejo/) Author: Denis Parfionovich <info@greendragon.info> License: see LICENSE.
54 lines
1.4 KiB
Rust
54 lines
1.4 KiB
Rust
//! sha256-based artifact id.
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//!
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//! Id = sha256(schema_name || 0x00 || content_bytes). Including the schema
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//! name prevents trivial collisions across different content types with the
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//! same payload bytes. Hex-encoded 64-char string.
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use sha2::{Digest, Sha256};
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/// Deterministic artifact id from schema name + content bytes.
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pub fn artifact_id(schema_name: &str, content: &[u8]) -> String {
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let mut h = Sha256::new();
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h.update(schema_name.as_bytes());
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h.update([0u8]);
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h.update(content);
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let out = h.finalize();
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hex_encode(&out)
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}
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fn hex_encode(bytes: &[u8]) -> String {
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const TABLE: &[u8; 16] = b"0123456789abcdef";
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let mut s = String::with_capacity(bytes.len() * 2);
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for b in bytes {
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s.push(TABLE[(*b >> 4) as usize] as char);
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s.push(TABLE[(*b & 0x0f) as usize] as char);
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}
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s
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn id_is_deterministic_for_same_input() {
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let a = artifact_id("spec", b"hello");
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let b = artifact_id("spec", b"hello");
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assert_eq!(a, b);
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assert_eq!(a.len(), 64);
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}
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#[test]
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fn id_changes_with_schema_name() {
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let a = artifact_id("spec", b"hello");
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let b = artifact_id("plan", b"hello");
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assert_ne!(a, b);
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}
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#[test]
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fn id_changes_with_content() {
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let a = artifact_id("spec", b"hello");
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let b = artifact_id("spec", b"world");
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assert_ne!(a, b);
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}
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}
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