Tags

Tags give the ability to mark specific points in history as being important

  • v0.2.3

    83545265 · Release 0.2.3 — Makefile portability · 
    v0.2.3 — Makefile portability fixes

  • v0.2.2

    2eef0613 · Release 0.2.2 — memory safety fixes for large inputs · 
    libpdq 0.2.2 — memory safety fixes

Fix signed-int overflow in Jarosz/decimate indexing for very large
inputs and add explicit size_t multiplication overflow guards.
No algorithmic changes; output unchanged from 0.2.1.

  • v0.2.1

    a36381b5 · Release 0.2.1 — safety fixes · 
    libpdq 0.2.1 — safety fixes

Reject len > INT_MAX in pdq_hash_image, switch luma loop to size_t to
avoid signed-int overflow on very large images, drop a stale source
header comment. No algorithmic changes; bit-compat with Meta's
reference unchanged from 0.2.0.

  • v0.2.0

    0a957263 · Release 0.2.0 · 
    libpdq 0.2.0

First public release. Bit-compatible with Meta's reference PDQ for
typical natural-content images.

Pipeline: stb_image decode -> BT.601 luminance -> Jarosz tent filter
+ decimate -> 16x16 separable DCT-II -> median threshold -> 256-bit
hash. Hex output matches Meta's canonical Hash256::format() so
libpdq's hashes interoperate with NCMEC, GIFCT, and ThreatExchange
tooling.

See CHANGELOG.md for full notes.