File size: 1,981 Bytes
a8b4b87 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 | /**
* multi_source_sync.ts — Shor-replicated convergent ingest for Amaru.
*
* Maps the Shor [[9,1,3]] receipt code (Shor 1995, PRA 52:R2493) to
* Amaru's multi-source data sync: up to 9 parallel sources can be
* ingested for one logical delta; majority-decode survives single
* source corruption.
*
* Citations:
* - Shor 1995 — 10.1103/PhysRevA.52.R2493
* - Hamming 1950 — 10.1002/j.1538-7305.1950.tb00463.x
*
* Innovation: Shor's construction was qubits; here we apply it to
* append-only deltas from heterogeneous sources. Receipt-level QEC.
*/
import {
shorEncode,
shorMajorityPayload,
hammingDistByte,
PhysicalReceipt,
} from './qec_lineage';
export interface SourceDelta {
readonly sourceId: string;
readonly payload: number; // single-byte digest of the delta (UInt8)
readonly lineage: number;
}
/** Convergence: given up to 9 source deltas for the same logical record,
* return the majority-decoded payload. */
export function convergeSources(deltas: ReadonlyArray<SourceDelta>): number {
if (deltas.length === 0) return 0;
// Pad up to 9 by repeating the first delta (Shor [[9,1,3]] bundle).
const padded: PhysicalReceipt[] = [];
for (let i = 0; i < 9; i += 1) {
const d = deltas[i % deltas.length];
padded.push({ payload: d.payload, lineage: d.lineage });
}
return shorMajorityPayload(padded);
}
/** Detect corruption: returns the number of sources whose payload
* differs from the majority. */
export function detectCorruptedSources(deltas: ReadonlyArray<SourceDelta>): number {
const majority = convergeSources(deltas);
return deltas.filter((d) => d.payload !== majority).length;
}
/** Source-pair Hamming distance (bytes): for fingerprinting drift. */
export function sourcePairDistance(a: SourceDelta, b: SourceDelta): number {
return hammingDistByte(a.payload, b.payload) + hammingDistByte(a.lineage, b.lineage);
}
export { shorEncode, shorMajorityPayload };
export type { PhysicalReceipt };
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