Asymmetric Phase Coding

NeurIPS 2026 40th Conference on Neural Information Processing Systems

Asymmetric Phase Coding Audio Watermarking

An Ed25519 signature hidden in the phase and magnitude of audio, verified with the public key alone.

  • Guang Yang1
  • Fengchen Liu2,3,4
  • Amir Ghasemian1
  • Zhong Wang2,5
  • Ninareh Mehrabi6
  • Homa Hosseinmardi1
  • 1University of California, Los Angeles
  • 2Lawrence Berkeley National Laboratory
  • 3University of California, Berkeley
  • 4Dakota State University
  • 5University of California, Merced
  • 6Meta

Runs in your browser. Nothing is uploaded.

Settings
Clip
Drop an audio file here, or choose one. First 30 s, mixed to mono.
Message

0 of bytes, UTF-8.

Attacks on the signed file

Protocol

Sign, attack, verify

Figure 1 of the paper, filled in by your run. Click a box for details.

Not run yet.

Use the library

Three implementations, one format

One format and one set of test vectors in JavaScript, Rust and Python. Source: JavaScript, Rust, Python.