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Ascon-80pq AEAD

Ascon variant with 160-bit key providing extra security margin against quantum attacks. Maintains same performance as Ascon-128.

Properties

Property	Value
Category	Authenticated Encryption
Sub-category	Lightweight Cryptography
Variant	ascon80pq
Security status	🛡️ Secure
Complexity	Intermediate
Inventor	Christoph Dobraunig, Maria Eichlseder, Florian Mendel, Martin Schläffer
Year	2023
Origin	Not specified
Source	algorithms/aead/ascon.js

Parameters

Parameter	Supported values
Key sizes	20 bytes (160 bits)
Tag sizes	16 bytes (128 bits)

Capabilities

Flag	Value
SupportsDetached	No

Security

Status: 🛡️ Secure

No vulnerabilities are recorded for this implementation.

Documentation

• NIST SP 800-232
• Ascon Specification
• NIST LWC Winner Announcement

References

• Ascon Reference C Implementation
• pyascon (Python Reference Implementation)

Test vectors

3 vectors ship with this algorithm and run in the test suite. Byte values are hexadecimal.

Vector 1 — Ascon-80pq: Empty message, empty AAD (Count 1)

Field	Value
key	000102030405060708090a0b0c0d0e0f10111213
nonce	000102030405060708090a0b0c0d0e0f
aad	(empty)
input	(empty)
expected	abb688efa0b9d56b33277a2c97d2146b

Vector 2 — Ascon-80pq: 8-byte plaintext (Count 265)

Field	Value
key	000102030405060708090a0b0c0d0e0f10111213
nonce	000102030405060708090a0b0c0d0e0f
aad	(empty)
input	0001020304050607
expected	2846418067ce93861a484e22565f161146fb6f47913803f9

Vector 3 — Ascon-80pq: 16-byte plaintext with 8-byte AAD (Count 537)

Field	Value
key	000102030405060708090a0b0c0d0e0f10111213
nonce	000102030405060708090a0b0c0d0e0f
aad	0001020304050607
input	000102030405060708090a0b0c0d0e0f
expected	e16c12dd1db74fa773415872b01cb834dbe18b2d5c6c9e77df52e8cabb7a3283

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