bb8dc579ea
conditional arithmetic prefixed with c: cadd, csub. Also use ccopy instead of cmov to avoid potential confusion like in https://github.com/cfrg/draft-irtf-cfrg-hash-to-curve/issues/210
2020-02-25 01:26:21 +01:00
5b53ad9cf3
Add references for finite fields and tower of finite fields arithmetic
2020-02-25 01:16:10 +01:00
78dee73648
Fp: setZero, setOne, double, in-place mul, Fp2: square
2020-02-24 20:39:36 +01:00
6b05c69652
Rename Fq -> Fp
2020-02-24 17:10:09 +01:00
3bd70991d4
reorg the codebase + add/update READMEs in folders with research ( #12 )
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* reorg the codebase + add/update READMEs in folders with research
* fix readme
* update pairing implementation papers
* Seperate hash-to-curve in its own folder, distinguish between norms, research and presentations
* Better markdown line breaks
* Add in-depth analysis of towers of extension fields for BN curve
* Fix Colm Ó hÉigeartaigh name and add Hash-to-Curve reference
2020-02-24 10:50:19 +01:00
d83101153a
Cosmetic changes: remove debug import strutils, BigInt.dec "returns" is now a doc comment, remove redundant setting the internal bitlength for modular multiplication
2020-02-23 21:49:51 +01:00
80f822c227
Set up CI with Azure Pipelines ( #13 )
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* Set up CI with Azure Pipelines
[skip ci]
* Add task for testing without GMP
* Add C++ testing + no GMP on windows
* Add the Nim wrapper for GMP to Azure build
* Add Azure badge
* Fix nimble test tasks
* Workaround windows path in Azure
* Fix nim binaries path and mingw on 32-bit
* add stew test dependency
* Fix nim/nimble path
* disable GMP tests on windows
2020-02-23 18:27:26 +01:00
acbb0f57f7
Travis CI ( #14 )
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* add Travis config for x86_64 and ARM64
* Add Travis badge
* add stew test dependency
* comment out unused 64-bit word extended precision arithmetic for ARM CI
2020-02-23 17:56:43 +01:00
5f91751328
remove leftover debugEcho
2020-02-23 17:12:41 +01:00
05009f9407
Fix mux comment and link
2020-02-23 02:23:19 +01:00
dc46e86490
Create a specialized montgomery modular square function
2020-02-23 01:43:42 +01:00
c807707ee4
Add research on pairing curve implementations
2020-02-23 01:17:39 +01:00
68727e5c8d
Add modular inversion + test vs GMP
2020-02-22 19:50:24 +01:00
8cbbd40a0c
Add benchmark of constant-time vs unsafe powmod
2020-02-22 18:39:29 +01:00
acfc99c4f0
Add an unsafe modular exponentiation that may leak exponent bits to timing attacks/oscilloscopes/memory cache attacks
2020-02-22 18:18:17 +01:00
e0f4e49cb5
Test modular exponentiation with BN254 and BLS12-381 moduli
2020-02-22 16:56:04 +01:00
24f2e1088e
Fix modular exp tests
2020-02-22 16:39:57 +01:00
4b65d0d723
Skeleton of modular exponentiation
2020-02-22 16:37:31 +01:00
236047767f
move mask to common
2020-02-18 13:01:14 +01:00
ef5dd8345b
Allow compile-time bigint serialization + terminology: serialize -> export
2020-02-18 12:36:42 +01:00
9395febada
add octet string encode/decode (bigEndian raw int)
2020-02-18 11:54:36 +01:00
d7d20c50b6
Add primitive for window-based modular exponentiation
2020-02-17 00:13:42 +01:00
285b6aad1a
Add cmov according to Milagro / hash_to_curve spec
2020-02-16 22:18:22 +01:00
6694023f16
Revert "Use cmov name instead of mux to be in line with IETF spec on Hash to curve and Verifiable Random Functions"
...
This reverts commit 56177c0cfe
2020-02-16 22:13:54 +01:00
56177c0cfe
Use cmov name instead of mux to be in line with IETF spec on Hash to curve and Verifiable Random Functions
2020-02-16 21:34:21 +01:00
a1801e26a0
Now passing finite field test vs GMP
2020-02-16 19:08:19 +01:00
c3d458e31b
Fix bug in redc: use montgomery mul for now. Add NIST P256 curve
2020-02-16 18:59:10 +01:00
7740bfbae4
print montgomery magics at compile-time
2020-02-16 12:32:34 +01:00
f1430915fe
Add Mersenn 61 and 127 + debugging print
2020-02-16 12:03:01 +01:00
5620bbfaee
rename io tests ti io bigints
2020-02-16 11:29:27 +01:00
23ecb9a221
Add a (failing) test vs GMP for modular multiplication on BN254 curve Field
2020-02-16 02:20:08 +01:00
10346d83a4
Benchmark: BigInt -> Montgomery conversion:
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- shlAddMod (with assembly division) is already 4x slower than Montgomery Multiplication based.
- constant-time division will be even slower
- use montgomery-multiplication based conversion
2020-02-16 01:43:17 +01:00
bd1430157f
Add BLS12-381 curve:
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- don't create "Mod" in curve parser: compile-time type incompatibility
- don't use "Mod" in const sections: compile-time type incompat --> create a macro to get montgomery magics instead of a const array
2020-02-16 00:44:01 +01:00
05a2c6a34b
Properly precompute the montomery cosntants at compile-time and store them in ROM
2020-02-15 20:43:38 +01:00
4970572393
Introduce alternate conversion to Montgomery Residue based on Montgomery Multiplication
2020-02-15 19:22:40 +01:00
e2333dce3c
Terminology nres -> mres, montgomeryResidue, montyResidue
2020-02-15 16:11:17 +01:00
d3ad4acb3a
Do less in curve generator macro:
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- no more monty magic "negInvModWord"
- no public "matchingBigInt"
Improve comment on Montgomery procedures
2020-02-15 13:56:13 +01:00
398b871c4f
Reorg the repo to introduce prepare for introducing the R² (mod p) magic constant
2020-02-15 13:13:01 +01:00
eb94c3d1bc
Add Montgomery Modular Multiplication
2020-02-15 02:59:08 +01:00
301cf20195
Use Montgomery representation by default for Finite Field
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- Fix montyMagic, modular inversion mode 2^2k was missing an iteration
- Fix test for buffer size in BigInt serialization
- Add UINT/Hex serialization for finite fields
- Montgomery conversion and redc
2020-02-15 00:26:40 +01:00
f418e08746
For finite fields, we will use the Montgomery n-residue form by default
2020-02-14 13:36:34 +01:00
f6b229b19c
Modular addition and substraction tests
2020-02-13 00:11:45 +01:00
4cac44358f
Update security level of BN254 to ~100bits
2020-02-13 00:11:04 +01:00
3eb22f8fc7
Fix curve parser, implement smoke test for finite field
2020-02-12 23:57:51 +01:00
6226d86726
Update IO: dumpHex -> toHex dumpRawUint -> serializeRawUint
2020-02-12 21:57:39 +01:00
343399ba1c
Remove TODO comment about bound checking, UncheckedArray in the raw API are not bound checked
2020-02-12 00:33:12 +01:00
89fce3b1c4
Wrap tests in main. Fixes C codegen bug due to templates invocation on global variable in test_primitives
2020-02-12 00:25:48 +01:00
fe59efb8d8
reorganize the repo
2020-02-12 00:20:31 +01:00
28c9c472b3
Fix generated code duplication due to templates
2020-02-11 14:28:21 +01:00
2a438653a8
Don't emit useless inline C functions
2020-02-11 12:42:24 +01:00
Mamy André-Ratsimbazafy