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Merged
Schaeff merged 1 commit into from
Sep 29, 2020
Merged

update generated pedersen #678

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64 changes: 34 additions & 30 deletions zokrates_stdlib/stdlib/hashes/pedersen/512bit.zok
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Original file line number Diff line number Diff line change
@@ -1,3 +1,4 @@

import "utils/multiplexer/lookup3bitSigned" as sel3s
import "utils/multiplexer/lookup2bit" as sel2
import "ecc/babyjubjubParams" as context
Expand All @@ -15,35 +16,38 @@ import "EMBED/u32_from_bits" as from_bits
// #%%
// entropy = np.random.bytes(64)
// hasher = PedersenHasher("test")
// hasher.hash_bytes(entropy)
// print(hasher.dsl_code)

// 512bit to 256bit Pedersen hash using compression of the field elements
def main(u32[16] input) -> u32[8]:

bool[512] e = [ \
...to_bits(input[0]),
...to_bits(input[1]),
...to_bits(input[2]),
...to_bits(input[3]),
...to_bits(input[4]),
...to_bits(input[5]),
...to_bits(input[6]),
...to_bits(input[7]),
...to_bits(input[8]),
...to_bits(input[9]),
...to_bits(input[10]),
...to_bits(input[11]),
...to_bits(input[12]),
...to_bits(input[13]),
...to_bits(input[14]),
...to_bits(input[15])
def main(u32[16] inputs) -> u32[8]:
bool[513] e = [\
...to_bits(inputs[0]),
...to_bits(inputs[1]),
...to_bits(inputs[2]),
...to_bits(inputs[3]),
...to_bits(inputs[4]),
...to_bits(inputs[5]),
...to_bits(inputs[6]),
...to_bits(inputs[7]),
...to_bits(inputs[8]),
...to_bits(inputs[9]),
...to_bits(inputs[10]),
...to_bits(inputs[11]),
...to_bits(inputs[12]),
...to_bits(inputs[13]),
...to_bits(inputs[14]),
...to_bits(inputs[15]),
false
]

BabyJubJubParams context = context()
field[2] a = context.INFINITY //Infinity
field cx = 0
field cy = 0

//Round 0
field cx = sel3s([e[0], e[1], e[2]], [13418723823902222986275588345615650707197303761863176429873001977640541977977 , 8366451672790208592553809639953117385619257483837439526516290319251622927412, 1785026334726838136757054176272745265857971873904476677125553010508875025629, 15763987975760561753692294837740043971877392788040801334205375164715487005236])
field cy = sel2([e[0], e[1]], [15255921313433251341520743036334816584226787412845488772781699434149539664639 , 10916775373885716961512013142444429405184550001421868906213743991404593770484, 18533662942827602783563125901366807026309605479742251601915445402562880550265, 12754584346112149619040942896930712185968371085994381911052593922432846916845])
cx = sel3s([e[0], e[1], e[2]], [13418723823902222986275588345615650707197303761863176429873001977640541977977 , 8366451672790208592553809639953117385619257483837439526516290319251622927412, 1785026334726838136757054176272745265857971873904476677125553010508875025629, 15763987975760561753692294837740043971877392788040801334205375164715487005236])
cy = sel2([e[0], e[1]], [15255921313433251341520743036334816584226787412845488772781699434149539664639 , 10916775373885716961512013142444429405184550001421868906213743991404593770484, 18533662942827602783563125901366807026309605479742251601915445402562880550265, 12754584346112149619040942896930712185968371085994381911052593922432846916845])
a = add(a, [cx, cy], context)
//Round 1
cx = sel3s([e[3], e[4], e[5]], [10096735692467598736728394557736034054031417419721869067082824451240861468728 , 6979151010236415881632946866847657030447196774231162748523315765559549846746, 12137947022495312670974525048647679757468392619153927921382150023166867027471, 10624360821702266736197468438435445939719745367234393212061381062942588576905])
Expand Down Expand Up @@ -722,19 +726,19 @@ def main(u32[16] input) -> u32[8]:
cy = sel2([e[507], e[508]], [18191174947339798787646910619446409943766046946921136035021645191602921923040 , 16559060177998758852323304784771936179434931576336411584121379336820727372618, 13858115732979799183025726471151602712224733686530960054365665740611187232029, 9933192519609817862698304326029579651414877338671776883175639003837130283966])
a = add(a, [cx, cy], context)
//Round 170
cx = sel3s([e[510], e[511], false], [3342564788366736273905106071612128667477972061160313630133110787799686301495 , 13766193863701503939885263345152684798552605679140222504700163745347162493183, 18523279471468319520962369406962457727155204375043681943707151819380964978377, 8094164074569624021939357073285075790695279643883973800173037824312344195506])
cx = sel3s([e[510], e[511], e[512]], [3342564788366736273905106071612128667477972061160313630133110787799686301495 , 13766193863701503939885263345152684798552605679140222504700163745347162493183, 18523279471468319520962369406962457727155204375043681943707151819380964978377, 8094164074569624021939357073285075790695279643883973800173037824312344195506])
cy = sel2([e[510], e[511]], [2329094643034533408459502544740928833981119919633412709248656884170940780093 , 3216329736050668550647765981020076413548845117352735257893224753954595290363, 18710403072495673647060422294369054840513840567808020912157404388689648711093, 9785201456176703812798077455183487364035650707229293534561747881523562553649])
a = add(a, [cx, cy], context)

bool[256] aC = edwardsCompress(a)

return [\
from_bits(aC[0..32]),
from_bits(aC[32..64]),
from_bits(aC[64..96]),
from_bits(aC[96..128]),
from_bits(aC[128..160]),
from_bits(aC[160..192]),
from_bits(aC[192..224]),
from_bits(aC[0..32]),
from_bits(aC[32..64]),
from_bits(aC[64..96]),
from_bits(aC[96..128]),
from_bits(aC[128..160]),
from_bits(aC[160..192]),
from_bits(aC[192..224]),
from_bits(aC[224..256])
]