iden-q-post-quantum (Python) — generated by iqcgen 1.1.0
Do not edit these sources. They are compiled from the IdenQ Crypto IR in
specs/ and regenerated with iqcgen generate. Cross-language byte parity is
the property this package exists to guarantee; hand edits silently break it.
Requires: CPython 3.10-3.13 from source; the published wheel is bytecode, so one wheel per minor version.
pip install ./dist/python
Passphrase-rooted hybrid post-quantum secret encryption (cipher_payload v2)
A passphrase is stretched with Argon2id into a master key; an ML-KEM-768 keypair is derived deterministically from that master key (so nothing has to be stored or synced); encapsulating to it yields a post-quantum shared secret which is mixed with a symmetric KEK to wrap a random per-secret data key. An attacker needs the passphrase — breaking ML-KEM alone, or recording traffic today to decrypt after a quantum computer exists, does not help.
from iden_q_post_quantum import (encrypt, decrypt)
encrypt(plaintext: string, passphrase: string)— Encrypt a secret under a passphrase.decrypt(payload: struct, passphrase: string)— Decrypt a payload with the passphrase that produced it.
Hybrid X25519 + ML-KEM-768 public-key envelope (login_envelope v1)
Seals a short credential to a recipient's static hybrid public key. Classical and post- quantum defence in depth: an interceptor who strips TLS must break BOTH X25519 and ML- KEM-768 to recover the key-encryption key, and neither alone is enough. The recipient opens it with the matching private keys.
from iden_q_post_quantum import (seal, unseal, derive_recipient_keys)
seal(plaintext: bytes, recipient_x_pk: bytes, recipient_mlkem_ek: bytes)— Seal a plaintext to a recipient's static hybrid public key.unseal(envelope: struct, x_sk: bytes, mlkem_dk: bytes)— Open an envelope with the recipient's private keys.derive_recipient_keys(seed: bytes)— Derive a recipient key set deterministically from a 96-byte seed.
ML-DSA-44 detached signature (mldsa_signature v1)
Post-quantum digital signatures (FIPS 204, ML-DSA-44). A signer derives a key pair
deterministically from a seed and signs a message; a verifier checks the signature
against the pinned public key and fails closed on anything that does not verify. Pure
ML-DSA with an empty context string, so the signing input is the message itself — the
shape a JWS ML-DSA-44 assertion needs.
from iden_q_post_quantum import (derive_signing_keys, sign, verify)
derive_signing_keys(seed: bytes)— Derive a signing key pair deterministically from a 32-byte seed.sign(sk: bytes, message: bytes)— Sign a message with a signing key.verify(signed: struct, pk: bytes)— Verify a signed message against a pinned verification key.
Licence
IdenQ Proprietary Licence. See LICENSE — this software is licensed, not sold.
Third-party components keep their own terms; see THIRD-PARTY-NOTICES.md.
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Publisher:
release.yml on iden-q/iden-q-post-quantum
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