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Performance measurements › x86_1 › kem-23 · system: x86_1 · arm_1

kem-23 Mito — performance on x86-64 (system x86_1)

Independent measurement following the structure of the NICCS x86 self-assessment guide, §3.5 (1)–(7). Not a submitter self-assessment.

1. Basic information

2. Assessment environment

item value
processor 12th Gen Intel(R) Core(TM) i7-12700 (CPU 2, one core)
clock max 2.10 GHz, governor performance, turbo off, SMT off
memory 31788 MiB
OS / kernel Debian GNU/Linux 13 (trixie) / 6.12.107+deb13-amd64
compiler / build tool gcc (Debian 14.2.0-19) 14.2.0 / cmake version 3.31.6
campaign start / end (UTC) 2026-09-25T10:02:21 / 2026-09-28T10:51:21

3. Functional testing (KAT)

Each library was checked against the submitted KAT vectors (SHA-256 manifest kem-23/kat.sha256 in the harness) before timing.

instance build flags KAT
Mito-1-128 guide PASS
Mito-1-256 guide PASS
Mito-1-512 guide PASS
Mito-1-E-128 guide PASS
Mito-1-E-256 guide PASS
Mito-1-E-512 guide PASS
Mito-2-E-128 guide PASS
Mito-2-E-256 guide PASS
Mito-2-E-512 guide PASS

4. Performance

instance operation mean cycles mean time ops/s median trial n (trials × iters)
Mito-1-128 keygen 12.63 M 6.03 ms 166 6.03 ms 825 (5 × 165)
Mito-1-128 enc 20.92 M 10 ms 100 10 ms 505 (5 × 101)
Mito-1-128 dec 29.58 M 14.1 ms 70.8 14.1 ms 355 (5 × 71)
Mito-1-256 keygen 38.14 M 18.4 ms 54.3 18.2 ms 275 (5 × 55)
Mito-1-256 enc 63.41 M 30.3 ms 33 30.3 ms 165 (5 × 33)
Mito-1-256 dec 89.90 M 42.9 ms 23.3 42.9 ms 120 (5 × 24)
Mito-1-512 keygen 234.79 M 112 ms 8.91 112 ms 100 (5 × 20)
Mito-1-512 enc 391.13 M 187 ms 5.35 187 ms 100 (5 × 20)
Mito-1-512 dec 550.81 M 265 ms 3.78 263 ms 100 (5 × 20)
Mito-1-E-128 keygen 11.69 M 5.58 ms 179 5.58 ms 890 (5 × 178)
Mito-1-E-128 enc 19.36 M 9.25 ms 108 9.25 ms 540 (5 × 108)
Mito-1-E-128 dec 27.35 M 13.1 ms 76.5 13.1 ms 380 (5 × 76)
Mito-1-E-256 keygen 39.69 M 19 ms 52.7 19 ms 265 (5 × 53)
Mito-1-E-256 enc 65.98 M 31.5 ms 31.7 31.5 ms 160 (5 × 32)
Mito-1-E-256 dec 93.36 M 44.6 ms 22.4 44.6 ms 115 (5 × 23)
Mito-1-E-512 keygen 224.83 M 107 ms 9.31 107 ms 100 (5 × 20)
Mito-1-E-512 enc 374.52 M 180 ms 5.55 179 ms 100 (5 × 20)
Mito-1-E-512 dec 527.42 M 253 ms 3.95 252 ms 100 (5 × 20)
Mito-2-E-128 keygen 17.27 M 8.25 ms 121 8.25 ms 605 (5 × 121)
Mito-2-E-128 enc 24.84 M 11.9 ms 84.3 11.9 ms 425 (5 × 85)
Mito-2-E-128 dec 32.99 M 15.8 ms 63.5 15.8 ms 320 (5 × 64)
Mito-2-E-256 keygen 55.07 M 26.3 ms 38 26.3 ms 190 (5 × 38)
Mito-2-E-256 enc 79.54 M 38 ms 26.3 38 ms 135 (5 × 27)
Mito-2-E-256 dec 105.35 M 50.3 ms 19.9 50.3 ms 100 (5 × 20)
Mito-2-E-512 keygen 346.96 M 167 ms 5.98 166 ms 100 (5 × 20)
Mito-2-E-512 enc 501.43 M 240 ms 4.17 240 ms 100 (5 × 20)
Mito-2-E-512 dec 660.21 M 317 ms 3.16 315 ms 100 (5 × 20)

5. Resource consumption

Static memory is approximated by the library's loadable ELF segments; peak memory is the process high-water mark (VmHWM) including the benchmark driver and libc, so both are upper-bound proxies rather than isolated algorithm memory.

instance operation static: ELF image (bytes) baseline RSS peak RSS
Mito-1-128 keygen 55177 1724 KiB 1888 KiB
Mito-1-128 enc 55177 1816 KiB 1888 KiB
Mito-1-128 dec 55177 1800 KiB 1924 KiB
Mito-1-256 keygen 56001 1744 KiB 1992 KiB
Mito-1-256 enc 56001 1924 KiB 2016 KiB
Mito-1-256 dec 56001 1936 KiB 2008 KiB
Mito-1-512 keygen 56361 1808 KiB 2252 KiB
Mito-1-512 enc 56361 2268 KiB 2408 KiB
Mito-1-512 dec 56361 2432 KiB 2524 KiB
Mito-1-E-128 keygen 55537 1724 KiB 1888 KiB
Mito-1-E-128 enc 55537 1776 KiB 1904 KiB
Mito-1-E-128 dec 55537 1776 KiB 1908 KiB
Mito-1-E-256 keygen 56441 1752 KiB 1980 KiB
Mito-1-E-256 enc 56441 1900 KiB 2000 KiB
Mito-1-E-256 dec 56441 1932 KiB 2000 KiB
Mito-1-E-512 keygen 57289 1820 KiB 2252 KiB
Mito-1-E-512 enc 57289 2292 KiB 2376 KiB
Mito-1-E-512 dec 57289 2388 KiB 2460 KiB
Mito-2-E-128 keygen 55289 1744 KiB 1872 KiB
Mito-2-E-128 enc 55289 1796 KiB 1896 KiB
Mito-2-E-128 dec 55289 1804 KiB 1916 KiB
Mito-2-E-256 keygen 56073 1744 KiB 1936 KiB
Mito-2-E-256 enc 56073 1924 KiB 2020 KiB
Mito-2-E-256 dec 56073 1924 KiB 2056 KiB
Mito-2-E-512 keygen 56881 1828 KiB 2308 KiB
Mito-2-E-512 enc 56881 2328 KiB 2408 KiB
Mito-2-E-512 dec 56881 2396 KiB 2464 KiB

6. Transmission and storage overhead

External public-key, ciphertext and signature sizes follow the curated performance/external_sizes.csv catalog; secret-key and shared-secret lengths remain API figures. See the size audit for disagreements.

instance public key secret key ciphertext shared secret
Mito-1-128 3908 4052 5796 64
Mito-1-256 8522 8682 12714 64
Mito-1-512 26630 26822 39878 64
Mito-1-E-128 3720 3864 5512 64
Mito-1-E-256 8130 8290 12130 64
Mito-1-E-512 25674 25866 38442 64
Mito-2-E-128 5192 5336 6440 64
Mito-2-E-256 10828 10988 13484 64
Mito-2-E-512 32712 32904 40840 64

Symmetric primitives

Survey verdict: ICCS-only

Share of each operation spent in the ICCS placeholder hash functions and in the ICCS DRNG (reference build, measured in the same run with link-time wrappers):

instance operation pseudohash/XOF/sm3 DRNG calls per operation
Mito-1-128 keygen 0.3% 7.8% drng 177, pseudohash 1
Mito-1-128 enc 1.0% 6.6% drng 266, pseudohash 2
Mito-1-128 dec 1.6% 6.0% drng 351, pseudohash 3
Mito-1-256 keygen 0.1% 4.3% drng 275, pseudohash 1
Mito-1-256 enc 0.6% 3.6% drng 413, pseudohash 2
Mito-1-256 dec 1.1% 3.2% drng 552, pseudohash 3
Mito-1-512 keygen 0.0% 1.6% drng 536, pseudohash 1
Mito-1-512 enc 0.3% 1.2% drng 803, pseudohash 2
Mito-1-512 dec 0.5% 1.1% drng 1.08e+03, pseudohash 3
Mito-1-E-128 keygen 0.3% 8.3% drng 178, pseudohash 1
Mito-1-E-128 enc 1.0% 7.1% drng 267, pseudohash 2
Mito-1-E-128 dec 1.6% 6.4% drng 351, pseudohash 3
Mito-1-E-256 keygen 0.1% 4.1% drng 275, pseudohash 1
Mito-1-E-256 enc 0.6% 3.4% drng 411, pseudohash 2
Mito-1-E-256 dec 1.0% 3.0% drng 545, pseudohash 3
Mito-1-E-512 keygen 0.0% 1.6% drng 536, pseudohash 1
Mito-1-E-512 enc 0.3% 1.3% drng 801, pseudohash 2
Mito-1-E-512 dec 0.5% 1.2% drng 1.08e+03, pseudohash 3
Mito-2-E-128 keygen 0.2% 6.4% drng 194, pseudohash 1
Mito-2-E-128 enc 1.1% 5.2% drng 236, pseudohash 2
Mito-2-E-128 dec 1.7% 5.2% drng 327, pseudohash 3
Mito-2-E-256 keygen 0.1% 3.3% drng 292, pseudohash 1
Mito-2-E-256 enc 0.6% 2.7% drng 363, pseudohash 2
Mito-2-E-256 dec 1.0% 2.6% drng 504, pseudohash 3
Mito-2-E-512 keygen 0.0% 1.2% drng 555, pseudohash 1
Mito-2-E-512 enc 0.3% 0.9% drng 693, pseudohash 2
Mito-2-E-512 dec 0.5% 0.9% drng 964, pseudohash 3

7. Raw evidence index

Paths are relative to performance/data/x86_1/ in the harness; each JSON file records its commands, environment and trials.

instance item file
Mito-1-128 KAT log (sha256 48b126c7832d690a…) kat/kem-23/Mito-1-128.log
Mito-1-128 timing dec records/kem-23/Mito-1-128__dec.json
Mito-1-128 timing enc records/kem-23/Mito-1-128__enc.json
Mito-1-128 timing keygen records/kem-23/Mito-1-128__keygen.json
Mito-1-128 hash profile dec profile/kem-23/Mito-1-128__dec.json
Mito-1-128 hash profile enc profile/kem-23/Mito-1-128__enc.json
Mito-1-128 hash profile keygen profile/kem-23/Mito-1-128__keygen.json
Mito-1-256 KAT log (sha256 bcde43e95d77dff2…) kat/kem-23/Mito-1-256.log
Mito-1-256 timing dec records/kem-23/Mito-1-256__dec.json
Mito-1-256 timing enc records/kem-23/Mito-1-256__enc.json
Mito-1-256 timing keygen records/kem-23/Mito-1-256__keygen.json
Mito-1-256 hash profile dec profile/kem-23/Mito-1-256__dec.json
Mito-1-256 hash profile enc profile/kem-23/Mito-1-256__enc.json
Mito-1-256 hash profile keygen profile/kem-23/Mito-1-256__keygen.json
Mito-1-512 KAT log (sha256 4aae9274e08975a2…) kat/kem-23/Mito-1-512.log
Mito-1-512 timing dec records/kem-23/Mito-1-512__dec.json
Mito-1-512 timing enc records/kem-23/Mito-1-512__enc.json
Mito-1-512 timing keygen records/kem-23/Mito-1-512__keygen.json
Mito-1-512 hash profile dec profile/kem-23/Mito-1-512__dec.json
Mito-1-512 hash profile enc profile/kem-23/Mito-1-512__enc.json
Mito-1-512 hash profile keygen profile/kem-23/Mito-1-512__keygen.json
Mito-1-E-128 KAT log (sha256 cf86a7383f9f5906…) kat/kem-23/Mito-1-E-128.log
Mito-1-E-128 timing dec records/kem-23/Mito-1-E-128__dec.json
Mito-1-E-128 timing enc records/kem-23/Mito-1-E-128__enc.json
Mito-1-E-128 timing keygen records/kem-23/Mito-1-E-128__keygen.json
Mito-1-E-128 hash profile dec profile/kem-23/Mito-1-E-128__dec.json
Mito-1-E-128 hash profile enc profile/kem-23/Mito-1-E-128__enc.json
Mito-1-E-128 hash profile keygen profile/kem-23/Mito-1-E-128__keygen.json
Mito-1-E-256 KAT log (sha256 f64c50c13782ab87…) kat/kem-23/Mito-1-E-256.log
Mito-1-E-256 timing dec records/kem-23/Mito-1-E-256__dec.json
Mito-1-E-256 timing enc records/kem-23/Mito-1-E-256__enc.json
Mito-1-E-256 timing keygen records/kem-23/Mito-1-E-256__keygen.json
Mito-1-E-256 hash profile dec profile/kem-23/Mito-1-E-256__dec.json
Mito-1-E-256 hash profile enc profile/kem-23/Mito-1-E-256__enc.json
Mito-1-E-256 hash profile keygen profile/kem-23/Mito-1-E-256__keygen.json
Mito-1-E-512 KAT log (sha256 2ed32a87f5edc9dc…) kat/kem-23/Mito-1-E-512.log
Mito-1-E-512 timing dec records/kem-23/Mito-1-E-512__dec.json
Mito-1-E-512 timing enc records/kem-23/Mito-1-E-512__enc.json
Mito-1-E-512 timing keygen records/kem-23/Mito-1-E-512__keygen.json
Mito-1-E-512 hash profile dec profile/kem-23/Mito-1-E-512__dec.json
Mito-1-E-512 hash profile enc profile/kem-23/Mito-1-E-512__enc.json
Mito-1-E-512 hash profile keygen profile/kem-23/Mito-1-E-512__keygen.json
Mito-2-E-128 KAT log (sha256 dc8fde4fdd876d2c…) kat/kem-23/Mito-2-E-128.log
Mito-2-E-128 timing dec records/kem-23/Mito-2-E-128__dec.json
Mito-2-E-128 timing enc records/kem-23/Mito-2-E-128__enc.json
Mito-2-E-128 timing keygen records/kem-23/Mito-2-E-128__keygen.json
Mito-2-E-128 hash profile dec profile/kem-23/Mito-2-E-128__dec.json
Mito-2-E-128 hash profile enc profile/kem-23/Mito-2-E-128__enc.json
Mito-2-E-128 hash profile keygen profile/kem-23/Mito-2-E-128__keygen.json
Mito-2-E-256 KAT log (sha256 acd8cf343c1e580d…) kat/kem-23/Mito-2-E-256.log
Mito-2-E-256 timing dec records/kem-23/Mito-2-E-256__dec.json
Mito-2-E-256 timing enc records/kem-23/Mito-2-E-256__enc.json
Mito-2-E-256 timing keygen records/kem-23/Mito-2-E-256__keygen.json
Mito-2-E-256 hash profile dec profile/kem-23/Mito-2-E-256__dec.json
Mito-2-E-256 hash profile enc profile/kem-23/Mito-2-E-256__enc.json
Mito-2-E-256 hash profile keygen profile/kem-23/Mito-2-E-256__keygen.json
Mito-2-E-512 KAT log (sha256 121de948af972264…) kat/kem-23/Mito-2-E-512.log
Mito-2-E-512 timing dec records/kem-23/Mito-2-E-512__dec.json
Mito-2-E-512 timing enc records/kem-23/Mito-2-E-512__enc.json
Mito-2-E-512 timing keygen records/kem-23/Mito-2-E-512__keygen.json
Mito-2-E-512 hash profile dec profile/kem-23/Mito-2-E-512__dec.json
Mito-2-E-512 hash profile enc profile/kem-23/Mito-2-E-512__enc.json
Mito-2-E-512 hash profile keygen profile/kem-23/Mito-2-E-512__keygen.json

Scripts: performance/campaign.py, performance/ngcc_perf.c, performance/hashprof/ in the harness.