Switch to new fast-paillier with backend choice by maurges · Pull Request #170 · LFDT-Lockness/cggmp21

maurges · 2025-11-24T13:47:57Z

Add the same backend choice here
Modify CI to test with both backends
Remove some util functions as they now exist on the backend integer itself

Signed-off-by: maurges <nikita@dfns.co>

github-actions · 2025-11-24T13:48:17Z

Crate direct deps

Direct deps

cggmp24-keygen v0.7.0-alpha.3 (/home/runner/work/cggmp21/cggmp21/pr_branch/cggmp24-keygen)
digest v0.10.6
futures v0.3.24
generic-ec v0.4.1
generic-ec-zkp v0.4.1
hex v0.4.3
key-share v0.6.1 (/home/runner/work/cggmp21/cggmp21/pr_branch/key-share)
paillier-zk v0.7.0-alpha.3 (/home/runner/work/cggmp21/cggmp21/pr_branch/paillier-zk)
rand_core v0.6.4
rand_hash v0.1.0
round-based v0.4.1
serde v1.0.193
serde_with v2.3.3
sha2 v0.10.6
thiserror v1.0.48
udigest v0.2.1

Compared to base branch

Diff

--- direct-deps-base	2025-11-25 15:13:08.728645961 +0000
+++ direct-deps-pr	2025-11-25 15:13:09.153648121 +0000
@@ -1 +1 @@
-cggmp24-keygen v0.7.0-alpha.2 (/home/runner/work/cggmp21/cggmp21/base_branch/cggmp24-keygen)
+cggmp24-keygen v0.7.0-alpha.3 (/home/runner/work/cggmp21/cggmp21/pr_branch/cggmp24-keygen)
@@ -7,2 +7,2 @@
-key-share v0.6.1 (/home/runner/work/cggmp21/cggmp21/base_branch/key-share)
-paillier-zk v0.7.0-alpha.2 (/home/runner/work/cggmp21/cggmp21/base_branch/paillier-zk)
+key-share v0.6.1 (/home/runner/work/cggmp21/cggmp21/pr_branch/key-share)
+paillier-zk v0.7.0-alpha.3 (/home/runner/work/cggmp21/cggmp21/pr_branch/paillier-zk)

All deps

cargo tree

cggmp24 v0.7.0-alpha.3 (/home/runner/work/cggmp21/cggmp21/pr_branch/cggmp24)
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�[2m│�[0m   �[2m├──�[0m fast-paillier v0.3.2
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�[2m│�[0m   �[2m│�[0m   �[2m│�[0m   �[2m├──�[0m core2 v0.4.0
�[2m│�[0m   �[2m│�[0m   �[2m│�[0m   �[2m│�[0m   �[2m└──�[0m memchr v2.5.0
�[2m│�[0m   �[2m│�[0m   �[2m│�[0m   �[2m├──�[0m num-bigint v0.4.6
�[2m│�[0m   �[2m│�[0m   �[2m│�[0m   �[2m│�[0m   �[2m├──�[0m num-integer v0.1.46
�[2m│�[0m   �[2m│�[0m   �[2m│�[0m   �[2m│�[0m   �[2m│�[0m   �[2m└──�[0m num-traits v0.2.19
�[2m│�[0m   �[2m│�[0m   �[2m│�[0m   �[2m│�[0m   �[2m├──�[0m num-traits v0.2.19
�[2m│�[0m   �[2m│�[0m   �[2m│�[0m   �[2m│�[0m   �[2m└──�[0m rand v0.8.5
�[2m│�[0m   �[2m│�[0m   �[2m│�[0m   �[2m│�[0m   �[2m �[0m   �[2m└──�[0m rand_core v0.6.4
�[2m│�[0m   �[2m│�[0m   �[2m│�[0m   �[2m├──�[0m num-integer v0.1.46 �[33m�[2m(*)�[39m�[22m
�[2m│�[0m   �[2m│�[0m   �[2m│�[0m   �[2m├──�[0m num-traits v0.2.19
�[2m│�[0m   �[2m│�[0m   �[2m│�[0m   �[2m├──�[0m once_cell v1.21.3
�[2m│�[0m   �[2m│�[0m   �[2m│�[0m   �[2m└──�[0m rand_core v0.6.4
�[2m│�[0m   �[2m│�[0m   �[2m├──�[0m num-bigint v0.4.6 �[33m�[2m(*)�[39m�[22m
�[2m│�[0m   �[2m│�[0m   �[2m├──�[0m num-integer v0.1.46 �[33m�[2m(*)�[39m�[22m
�[2m│�[0m   �[2m│�[0m   �[2m├──�[0m num-traits v0.2.19
�[2m│�[0m   �[2m│�[0m   �[2m├──�[0m rand v0.8.5 �[33m�[2m(*)�[39m�[22m
�[2m│�[0m   �[2m│�[0m   �[2m├──�[0m rand_core v0.6.4
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�[2m│�[0m   �[2m│�[0m   �[2m└──�[0m thiserror v2.0.4 �[33m�[2m(*)�[39m�[22m
�[2m│�[0m   �[2m├──�[0m generic-ec v0.4.1 �[33m�[2m(*)�[39m�[22m
�[2m│�[0m   �[2m├──�[0m rand_core v0.6.4
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�[2m│�[0m   �[2m│�[0m   �[2m└──�[0m serde_with_macros v3.0.0 (proc-macro)
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�[2m└──�[0m udigest v0.2.1 �[33m�[2m(*)�[39m�[22m

Compared to base branch

Diff

--- all-deps-base	2025-11-25 15:13:08.870646683 +0000
+++ all-deps-pr	2025-11-25 15:13:09.295648843 +0000
@@ -1 +0,0 @@
-az v1.2.1
@@ -3,2 +1,0 @@
-bytemuck v1.13.1
-bytemuck_derive v1.4.1 (proc-macro)
@@ -6 +3,2 @@
-cggmp24-keygen v0.7.0-alpha.2 (/home/runner/work/cggmp21/cggmp21/base_branch/cggmp24-keygen)
+cggmp24-keygen v0.7.0-alpha.3 (/home/runner/work/cggmp21/cggmp21/pr_branch/cggmp24-keygen)
+core2 v0.4.0
@@ -21 +19 @@
-fast-paillier v0.1.1
+fast-paillier v0.3.2
@@ -38 +36 @@
-gmp-mpfr-sys v1.6.1
+glass_pumpkin v1.9.0
@@ -42,8 +40,10 @@
-key-share v0.6.1 (/home/runner/work/cggmp21/cggmp21/base_branch/key-share)
-key-share v0.6.1 (/home/runner/work/cggmp21/cggmp21/base_branch/key-share) �[33m�[2m(*)�[39m�[22m
-libc v0.2.153
-libm v0.2.15
-num-bigint v0.4.3
-num-integer v0.1.45
-num-traits v0.2.15
-paillier-zk v0.7.0-alpha.2 (/home/runner/work/cggmp21/cggmp21/base_branch/paillier-zk)
+key-share v0.6.1 (/home/runner/work/cggmp21/cggmp21/pr_branch/key-share)
+key-share v0.6.1 (/home/runner/work/cggmp21/cggmp21/pr_branch/key-share) �[33m�[2m(*)�[39m�[22m
+memchr v2.5.0
+num-bigint v0.4.6
+num-bigint v0.4.6 �[33m�[2m(*)�[39m�[22m
+num-integer v0.1.46
+num-integer v0.1.46 �[33m�[2m(*)�[39m�[22m
+num-traits v0.2.19
+once_cell v1.21.3
+paillier-zk v0.7.0-alpha.3 (/home/runner/work/cggmp21/cggmp21/pr_branch/paillier-zk)
@@ -57,0 +58,2 @@
+rand v0.8.5
+rand v0.8.5 �[33m�[2m(*)�[39m�[22m
@@ -64,2 +65,0 @@
-rug v1.27.0
-rug v1.27.0 �[33m�[2m(*)�[39m�[22m
@@ -85,0 +86 @@
+thiserror v2.0.4 �[33m�[2m(*)�[39m�[22m

socket-security · 2025-11-24T13:48:24Z

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	cargo/fast-paillier@0.1.1 ⏵ 0.3.2			^-3

View full report

github-actions · 2025-11-24T13:49:37Z

The spec was successfully compiled. PDF is available here.

github-actions · 2025-11-24T13:52:20Z

Benchmark Result

Benchmarks

RUST_TESTS_SEED=03badec95f61ac836819c481e454673c0ee4ac4a8018b7c351ea09d3836b4a02
n = 3

Non-threshold DKG
Protocol Performance:
  - Protocol took 522.53µs to complete
In particular:
  - Stage: 3.28µs
    - Setup networking: 3.01µs (91.7%)
    - Unstaged: 271.00ns (8.3%)
  - Round 1: 145.14µs
    - Sample x_i, rid_i, chain_code: 64.89µs (44.7%)
    - Sample schnorr commitment: 58.67µs (40.4%)
    - Commit to public data: 21.27µs (14.7%)
    - Unstaged: 310.00ns (0.2%)
  - Round 2: 1.33µs
    - Hash received msgs (reliability check): 1.14µs (85.7%)
    - Unstaged: 190.00ns (14.3%)
  - Round 3: 250.00ns
    - Assert other parties hashed messages (reliability check): 140.00ns (56.0%)
    - Unstaged: 110.00ns (44.0%)
  - Round 4: 65.75µs
    - Validate decommitments: 31.70µs (48.2%)
    - Calculate chain_code: 912.00ns (1.4%)
    - Calculate challege rid: 32.82µs (49.9%)
    - Prove knowledge of `x_i`: 200.00ns (0.3%)
    - Unstaged: 120.00ns (0.2%)
  - Round 5: 306.77µs
    - Validate schnorr proofs: 306.05µs (99.8%)
    - Unstaged: 721.00ns (0.2%)


Threshold DKG
Protocol Performance:
  - Protocol took 1.31ms to complete
In particular:
  - Stage: 1.69µs
    - Setup networking: 1.63µs (96.5%)
    - Unstaged: 60.00ns (3.5%)
  - Round 1: 200.76µs
    - Sample rid_i, schnorr commitment, polynomial, chain_code: 176.29µs (87.8%)
    - Commit to public data: 24.28µs (12.1%)
    - Unstaged: 190.00ns (0.1%)
  - Round 2: 1.28µs
    - Hash received msgs (reliability check): 1.15µs (89.8%)
    - Unstaged: 131.00ns (10.2%)
  - Round 3: 331.00ns
    - Assert other parties hashed messages (reliability check): 211.00ns (63.7%)
    - Unstaged: 120.00ns (36.3%)
  - Round 4: 813.51µs
    - Validate decommitments: 47.26µs (5.8%)
    - Validate data size: 281.00ns (0.0%)
    - Validate Feldmann VSS: 363.88µs (44.7%)
    - Compute rid: 340.00ns (0.0%)
    - Compute chain_code: 772.00ns (0.1%)
    - Compute Ys: 367.92µs (45.2%)
    - Compute sigma: 380.00ns (0.0%)
    - Calculate challenge: 32.18µs (4.0%)
    - Prove knowledge of `sigma_i`: 341.00ns (0.0%)
    - Unstaged: 161.00ns (0.0%)
  - Round 5: 297.28µs
    - Validate schnorr proofs: 296.08µs (99.6%)
    - Derive resulting public key and other data: 962.00ns (0.3%)
    - Unstaged: 230.00ns (0.1%)


Auxiliary data generation protocol
Protocol Performance:
  - Protocol took 18.67s to complete
In particular:
  - Stage: 16.33µs
    - Retrieve auxiliary data: 150.00ns (0.9%)
    - Setup networking: 16.10µs (98.6%)
    - Unstaged: 80.00ns (0.5%)
  - Round 1: 2.22s
    - Build Paillier key: 3.06µs (0.0%)
    - Build Pedersen params: 5.11ms (0.2%)
    - Prove Πprm (ψˆ_i): 2.21s (99.8%)
    - Sample random bytes: 2.07µs (0.0%)
    - Compute hash commitment and sample decommitment: 219.07µs (0.0%)
    - Unstaged: 361.00ns (0.0%)
  - Round 2: 1.71µs
    - Hash received msgs (reliability check): 1.42µs (83.0%)
    - Unstaged: 292.00ns (17.0%)
  - Round 3: 732.00ns
    - Assert other parties hashed messages (reliability check): 481.00ns (65.7%)
    - Unstaged: 251.00ns (34.3%)
  - Round 4: 11.60s
    - Validate round 1 decommitments: 442.39µs (0.0%)
    - Validate bit length and П_prm (ψˆ_i): 4.47s (38.6%)
    - Add together shared random bytes: 1.27µs (0.0%)
    - Compute П_mod (ψ_i): 6.77s (58.3%)
    - Assemble security params for П_fac (ψ_i): 19.80µs (0.0%)
    - Compute П_fac (ψ'_i,j): 360.98ms (3.1%)
    - Unstaged: 2.15µs (0.0%)
  - Round 5: 4.85s
    - Validate ψ_j (П_mod): 4.66s (96.1%)
    - Validate ψ'_j,i (П_fac): 188.31ms (3.9%)
    - Assemble auxiliary info: 778.51µs (0.0%)
    - Unstaged: 1.07µs (0.0%)


Signing protocol
Protocol Performance:
  - Protocol took 2.95s to complete
In particular:
  - Stage: 1.34ms
    - Map t-out-of-n protocol to t-out-of-t: 82.39µs (6.2%)
    - Retrieve auxiliary data: 1.25ms (93.2%)
    - Precompute execution id and security params: 300.00ns (0.0%)
    - Setup networking: 7.73µs (0.6%)
    - Unstaged: 80.00ns (0.0%)
  - Round 1: 417.60ms
    - Generate local ephemeral secrets (k_i, y_i, p_i, v_i): 232.29µs (0.1%)
    - Encrypt G_i and K_i: 73.61ms (17.6%)
    - Generate a_i, b_i, A_i1, A_i2, B_i1, B_i2: 411.72µs (0.1%)
    - Prove psi0_ji, psi1_ji: 343.34ms (82.2%)
    - Unstaged: 922.00ns (0.0%)
  - Round 2: 124.19µs
    - Hash received msgs (reliability check): 123.92µs (99.8%)
    - Unstaged: 270.00ns (0.2%)
  - Round 3: 1.61s
    - Assert other parties hashed messages (reliability check): 1.15µs (0.0%)
    - Verify psi0, psi1 proofs: 213.92ms (13.3%)
    - Prove tilde_psi_i: 362.46µs (0.0%)
    - Sample random r, hat_r, s, hat_s, beta, hat_beta: 13.53µs (0.0%)
    - Encrypt D_ji: 149.90ms (9.3%)
    - Encrypt F_ji: 71.40ms (4.4%)
    - Encrypt hat_D_ji: 150.07ms (9.3%)
    - Encrypt hat_F_ji: 70.34ms (4.4%)
    - Prove psi_ji: 477.86ms (29.8%)
    - Prove psiˆ_ji: 472.29ms (29.4%)
    - Unstaged: 1.61µs (0.0%)
  - Round 4: 918.64ms
    - Retrieve auxiliary data: 1.52µs (0.0%)
    - Validate tilde_psi_j: 1.09ms (0.1%)
    - Validate psi_i,j: 386.27ms (42.0%)
    - Validate hat_psi_i,j: 386.15ms (42.0%)
    - Compute Gamma, Delta_i, delta_i, chi_i: 144.76ms (15.8%)
    - Prove psi_prime: 369.96µs (0.0%)
    - Unstaged: 932.00ns (0.0%)
  - Presig output: 1.55ms
    - Validate psi_prime_prime: 1.07ms (68.8%)
    - Calculate presignature: 484.27µs (31.2%)
    - Unstaged: 791.00ns (0.1%)
  - Partial signing: 7.63µs
  - Signature reconstruction: 533.18µs

Signed-off-by: maurges <nikita@dfns.co> Co-authored-by: Denis Varlakov <denis@dfns.co> Co-authored-by: maurges <nikita@dfns.co>

Cargo.toml

survived · 2025-11-25T14:34:45Z

otherwise looks good!

Signed-off-by: maurges <nikita@dfns.co>

maurges added 15 commits November 24, 2025 14:45

Switch paillier-zk with variable big integer backend

f750d73

Signed-off-by: maurges <nikita@dfns.co>

Add testing of rug in CI

da1d7be

Signed-off-by: maurges <nikita@dfns.co>

Fix unoptimized usage of one()

0d933d0

Signed-off-by: maurges <nikita@dfns.co>

Remove primitve suffixes; restore to original suffixes where impossible

94f3371

Signed-off-by: maurges <nikita@dfns.co>

Fix all tests running with num-bigint

ac2a68e

Signed-off-by: maurges <nikita@dfns.co>

Address review comments

13a1803

Signed-off-by: maurges <nikita@dfns.co>

Add bare check for rug

6ab9b14

Signed-off-by: maurges <nikita@dfns.co>

Update to fast-paillier v0.3. Other small adjustments

00d8a02

Signed-off-by: maurges <nikita@dfns.co>

Update changelog and alpha version

55acdd2

Signed-off-by: maurges <nikita@dfns.co>

Add no_std feature to remaining crates. Check in ci with wasm

aa875e6

Signed-off-by: maurges <nikita@dfns.co>

Fix security params in tests not corresponding to paper, causing fails

c2910a3

Signed-off-by: maurges <nikita@dfns.co>

Fix key length in tests not corresponding to paper, causing fails

24164dc

Signed-off-by: maurges <nikita@dfns.co>

Add a CI check that num-bigint is not present as a dependency

bdf9498

Signed-off-by: maurges <nikita@dfns.co>

Add docs about wasm and no_std. Fix std not being default

da18052

Signed-off-by: maurges <nikita@dfns.co>

Change the strategy of checking for num-bigint or rug backend in ci

d67287a

Signed-off-by: maurges <nikita@dfns.co>

Bump version. Add migration instructions

99adb07

Signed-off-by: maurges <nikita@dfns.co> Co-authored-by: Denis Varlakov <denis@dfns.co> Co-authored-by: maurges <nikita@dfns.co>

maurges marked this pull request as ready for review November 24, 2025 14:15

maurges requested a review from survived November 24, 2025 14:15

survived reviewed Nov 25, 2025

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Use latest fast-paillier with compat fixes

26345bd

Signed-off-by: maurges <nikita@dfns.co>

survived approved these changes Nov 25, 2025

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maurges merged commit d1ec5af into cggmp24/m Nov 26, 2025
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maurges deleted the cggmp24/slow-paillier branch November 26, 2025 09:40

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Switch to new fast-paillier with backend choice#170

Switch to new fast-paillier with backend choice#170
maurges merged 17 commits intocggmp24/mfrom
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