SLH-DSA·Digital signature·NIST level 1

SLH-DSA-SHAKE-128f

SLH-DSA (FIPS 205) is a stateless hash-based signature scheme, standardized by NIST in August 2024. It relies only on the security of cryptographic hash functions — no number-theoretic assumptions. Larger signatures and slower signing, but the most conservative security basis.

Latest run2026-07-07 09:32 UTC
commitbfd529d
CPU
Xeon Platinum 8259CL @ 2.50GHz
Instance
t3.mediumburstable
OS / Kernel
24.04.4 LTS
liboqs
0.15.0
Wall clock
49m 51s
CPU steal
0.83%

Parameters

Family
SLH-DSA
Parameter set
SHAKE-128f
Public key
32 B
Private key
64 B
Signature
16.69 KB
Iterations / op
1,000
liboqs key
SLH_DSA_PURE_SHAKE_128F
keygenGenerate a fresh key pair.
54 of 54 runs
Mean
2.65 ms
Median
2.62 ms
p95
2.76 ms
p99
3.15 ms
Stdev
161.7 µs
Min
2.60 ms
Ops/sec
378
Mean over time

Click any point to view the GitHub Actions run that produced it.

signProduce a signature over a message using the private key.
54 of 54 runs
Mean
62.37 ms
Median
61.74 ms
p95
66.88 ms
p99
70.92 ms
Stdev
2.01 ms
Min
61.09 ms
Ops/sec
16.0
Mean over time

Click any point to view the GitHub Actions run that produced it.

verifyVerify a signature against a message and public key.
54 of 54 runs
Mean
3.72 ms
Median
3.67 ms
p95
3.94 ms
p99
5.08 ms
Stdev
298.6 µs
Min
3.36 ms
Ops/sec
269
Mean over time

Click any point to view the GitHub Actions run that produced it.