Add BatchContribution parsers & real json test

batch_contribution_10.json

@@ -0,0 +1,133 @@
+{
+  "contributions": [
+    {
+      "numG1Powers": 10,
+      "numG2Powers": 10,
+      "powersOfTau": {
+        "G1Powers": [
+          "0x97f1d3a73197d7942695638c4fa9ac0fc3688c4f9774b905a14e3a3f171bac586c55e83ff97a1aeffb3af00adb22c6bb",
+          "0xa378067a893ead4127dea9611d8532730f837243d8ccf2cd2c0627192f98dbaffd93745025eaac982f5c356ffafc982d",
+          "0xa40a639ed3268a745ba5e3663e53ac317407a50e4703cfdbdcad1e9ad9971ca70f0128c3cf632c06eace5c95b563d1b3",
+          "0x943641efd6c96c6daf2e48490c6cd9ee10289e11a9b1116787952d331857a7375f44b0d9410d0255ae12c8bc9d6897b9",
+          "0xa83c9b16eda2ae02ab0549b21ea9530ae0abfc83674a84ab15bcbf2dfcfbcbc99ac616aff28b2b8fb8e43cd6e4a14698",
+          "0x93a934da1d12865186e265fbd80eb446ecf0a8e4eba85f7cbfd1e1aa33fad0176116f3e97e803eb7e757952a25571912",
+          "0x906089f0089fd56d76ec450506c888ae5219e0d77bbde594d7f05a0d384f6efbf7720117d8cd06568d3dc24aad4a2b5c",
+          "0xa8adfda4341f10d511cca71f6166d947e080a3cc203712e107800bd20b27d091d602ebc1ffde650f7fde5cd332951114",
+          "0x9405c3ac15ccef48e621291a1311df0166da2ec96ab5f7ef554853f48875b99f34be84f7c7acfe5bb1c1b5f9a25f0d73",
+          "0xa2096447d14f03d0fcd53f287aa31e68695ea10b79119c7194b467b6acceb85b49eb15052fa2d25bee18b1ca92eacae9"
+        ],
+        "G2Powers": [
+          "0x93e02b6052719f607dacd3a088274f65596bd0d09920b61ab5da61bbdc7f5049334cf11213945d57e5ac7d055d042b7e024aa2b2f08f0a91260805272dc51051c6e47ad4fa403b02b4510b647ae3d1770bac0326a805bbefd48056c8c121bdb8",
+          "0x89950d84e988c5610ae8fe1ed16d51959a3cdc0c373dd550e09aa4f9e0c97e477e2a65dd42c625d79b3e43ea3581edf21133cf5292082ee7c0e25752ef404d2219cd92d35216c52bc12fb58072d5fb0158b0ceef9da6d393a6a4031e4f7d46fe",
+          "0x92c0be5b7c501522413447aa5024807148cecf7b66c6d0d3cd3936d0f4a6a85975652b4c1d29b78a6c6735a987b20b8016dd8d94f3a842ff310496847e1031837931a04445593b3d571ce737bd270dc7ea57c5a58c5e3124179424f842d8f023",
+          "0x8d3975485ca4b7a1ca3b963b5b854f5f4b210e0145124905527f4368dc867d6d699ef7ab5d0add0946d5659ba841394e0205710907e4c5dc35745b9707e74df8384703d94587ddd7299d25ae617c630cc73810f5719d4babb932219134844303",
+          "0x998f30802c63722860011abfe563619f2d183a5efb391284426f76f0acf84dbaa14f95b24d18bbb535a3634d7f2c4b810feb9875118a34b60254b014e84b994e914a34b07f32dcbecd3a0cf5db238626444f1b1492a97072dd900cde0a5aaaf1",
+          "0x92457a369881136ea44f4d78bee5ef565a72688ce810b227d9639461ff1334e6037ac8a8887878987fb65b4e95cd81ef04f9d6267094d5444e968ad6387d13c7db8099281696e08576366bacb70079566c4ed9521d6a1517066c91fdb01582f1",
+          "0x9424eb8c24e722a5892b3db0bdf585fcffb3c583c18260fe592b43a37a01a2111300804b54bcbf802cc0fb7aadf5bf461873453c0cdd143774dc9a7d7df7a77182165797f0bf25f1de9071ff373572bef4a68f07b4fb8e66efd31f1a26dc69dc",
+          "0x9067edc923a97aa859f88478b9251ccec92d57d60374067a4830778c86e848827e61f65c70f253242dd29f630de030a214bc93aef41af4c77f72a0b7511647c61d87d06b8ba1a0a8525bbf4b05f27b34828a257da587376be8553bb763327dfc",
+          "0xab336817d7c5cd1bcbb32b40c593f61c6426cf9645cb0d7de8364c984d898d3fc2aec7bcc90149828714fc041b9fd71513f7375873af5947387027da4f1ff9227048a6db9f2754430453db242ce4b2c62743acfad419e376e425b64571fd7c1d",
+          "0x81e0d34d9acc47508d2c9220d746935eb13feb3751a9c59967ed3aabe577aa37ec9c86d43a0d87c78d1f93dfa5c7b2f3005e683513f93aa4c6a617db5f8c716dd07040736e193bad1e6684bb5cb805e5b168e22a96e263d0ea8042addcc39865"
+        ]
+      },
+      "potPubkey": "0x93e02b6052719f607dacd3a088274f65596bd0d09920b61ab5da61bbdc7f5049334cf11213945d57e5ac7d055d042b7e024aa2b2f08f0a91260805272dc51051c6e47ad4fa403b02b4510b647ae3d1770bac0326a805bbefd48056c8c121bdb8",
+      "blsSignature": ""
+    },
+    {
+      "numG1Powers": 10,
+      "numG2Powers": 10,
+      "powersOfTau": {
+        "G1Powers": [
+          "0x97f1d3a73197d7942695638c4fa9ac0fc3688c4f9774b905a14e3a3f171bac586c55e83ff97a1aeffb3af00adb22c6bb",
+          "0xb216c2f01f61edf6a61e88cb2bbc5e14c5b887a48cf39d5e807cdf6c74c1ddfafc807fa491c6d7dc49cac4c58910f152",
+          "0x8d99ac362d842d82f8bd77c013995f3bc6800e6497a52495c4ec899bf2a95250513ae06216ce797e0071770371c11e30",
+          "0xa31e068bc6837ef7477e3976a0cb2b518a5b59440e4be19a95b271e2397d9884eb2cab0be2b741bd12132bb1c9accbd7",
+          "0xb108b7e8d22a5c567442374121712d1a271b0d93930b8943d74f3e0c2e07833b42cb353c03bfedbd75850dec448daa9d",
+          "0xa17b9068308a830df358a3f488cda2b2745280830b8d24cde0d5d9245f48567461aa41709c76b294ef99a0b2f43b2899",
+          "0xa440e5bf3c63067062ecd37927a6215083f60daf3d6608b0745b1b04702ec99a374dcc900069275c545c75afa5ad9a7f",
+          "0xb82994ca41e784bff93553952d3ee9ccc470cde88ef2ad467d7aff86484f676b7e014ab1a99208b58b18a7f4d6f8bd9d",
+          "0xb783a5d704f8eff2b826908683536164fdfca880090ea1b0dd72d6ccb3f29c236a95883eb3ac227ed0f8ea6945db1f9d",
+          "0x85d6e4fac198239db9d381e5d9ae6036143b2e8023d0cc25aaace2933f9689736c54c4369f7a1b788aa04c3f327dbcd8"
+        ],
+        "G2Powers": [
+          "0x93e02b6052719f607dacd3a088274f65596bd0d09920b61ab5da61bbdc7f5049334cf11213945d57e5ac7d055d042b7e024aa2b2f08f0a91260805272dc51051c6e47ad4fa403b02b4510b647ae3d1770bac0326a805bbefd48056c8c121bdb8",
+          "0x81e2a9d9fc4c8f9475e806228396808a1c30591463b29b8b1dd3c73721f078d2f4853000a57a7e932aa8ba47e73c95fe1014e51a6943b2b5f6d7d5744cbe1907bbf3a530ef69b203ef810f3fd6a1981300f5e0565fb11de6579e6c4126a36ed6",
+          "0x87a9490bb010a56b26309568335d82322a9b9904f6dbad73f768dfc50116f07337f8154301c5a2342608d2227c684f4e01280f2fbf55d9ff55ca6ec61bd9c415bde4a6f60c1c46db56a2735a266da292afe4020da4b24a9aa748e6e3c03844ae",
+          "0x96aab105676ea9a12345e03543c5b190f11e478bf509cdeacb0d0fa1be0741a5addf3fef1b9873461fc4e89377ac320305f6b56bc6a8cc2888cd264529f587781600a84d189fcff2b976d6d484cf6ef2f64654fc5a79921c091be6c2c3d718dd",
+          "0xa0032c8f32327fb501efd344ca33c5376a646a090e19257e195207c52a92a00b07219803d3ddb272921d4051ab900b3b1864c9e7a848e39b2b4fff7921c4c5cf0b05cae21cf1faebb33935a5b0422d6ecb2712355e974b9e7c61c60147e01608",
+          "0xa99867eb5be2e78bfdb570e8d711e877f91fd50224ec4267d02531a1c6b953cf60fbf854c7b32b7d27188a73d83d9f12063e6d2e5d29bdacb225d45611e9f039bc9e1bf890ac4874ec2f135c8bc3f7028dd4c20864ca3b49844b7d1e5c0aaea6",
+          "0x93e5c51625a0d6a567d214bfc59bebb48afb44c06c37e27076f0316ec0e4cfc911be16c1761639a1a507f866e6585d500e624368552dcca286baa000cf314165c710166214d9622e0c6996e4899edd1efe5b3edde073d001174f7149db2bccdd",
+          "0x9649c3ba60f63811bb3b8afed0bec607e701f2668b154c78b82782b78bc0202f17506dac9e787aadc6b43579f0788e2010b57b39d685075231d9a50f2fc53da66e1ea9f82373493b91723b06acf696457603624bff9f1059b0c3c211254d78e8",
+          "0xb6650f4dce8b165a240eb337155af576b745bbf48b10ce1c5e4797cf5ac59d43756e46a7352278d9526c4e84d4cfa42b05215cd2caf93b041331bbfa8bee713851cf75a426ee0bc292bd61e090f6ac95fe7b3ce981023f7e2b44128355cf04bf",
+          "0x8edc430fd61190405aef500e824656aa7a9169274f8d3f72e5c21d06b1c4ddba7a3669c8866aec614810d44f6af24029060c1f8bf116fe62a995b825b751b80f8f5f584640b9b3043340268d6f0b624491491728639b855f2d9cc0831fbecc6f"
+        ]
+      },
+      "potPubkey": "0x93e02b6052719f607dacd3a088274f65596bd0d09920b61ab5da61bbdc7f5049334cf11213945d57e5ac7d055d042b7e024aa2b2f08f0a91260805272dc51051c6e47ad4fa403b02b4510b647ae3d1770bac0326a805bbefd48056c8c121bdb8",
+      "blsSignature": ""
+    },
+    {
+      "numG1Powers": 10,
+      "numG2Powers": 10,
+      "powersOfTau": {
+        "G1Powers": [
+          "0x97f1d3a73197d7942695638c4fa9ac0fc3688c4f9774b905a14e3a3f171bac586c55e83ff97a1aeffb3af00adb22c6bb",
+          "0xb3e708190251b0e11bcf5549014d1a2812d200ed036ce517648662637cf3484b949a96fddb76d13476dfbdd0840e8316",
+          "0x8929b0375ca1f6197495d7de124ff19ce7b968b90a823017545a8afcc5e34eafbd27cdec5cc228dea7ca0ddc801c3343",
+          "0xa15ddff4b80bedcb9d5274cfdc95ff4e66a35106b92f8d1385958ec5546afb918f48a895fa7999a2f950925b159839d3",
+          "0x8b8637a0a1cc3b54b888c1952f9155e4a29f16a61fd3fde0ddb3afc03e50bb771626cf86ab099d3968fbfc91a72c6f13",
+          "0x980e3af09cf0ac274f71f6863bd3e0c2b37ab72eabc02da7095d139440c262c622dc220c9ab5d86c8069f1086e6437fd",
+          "0x82fa86ed657ccc999e11dbf9fece38e4e7fecf21244dde6fb4030bdc2b4db5314b6317467a0370258dd00daf28edd31e",
+          "0x8bb91d884671c787ff6e4e7a999e8323c9493673d99b05c6d209719d950420019e28ae54abb9196514c6c90e3a5612c2",
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+          "0x8dc3ad6f0f25a57447f6abab721361b7aa0ef7b2fe055cefcc0ea409ef312e41509370390514c39298e445393b0697c4"
+        ],
+        "G2Powers": [
+          "0x93e02b6052719f607dacd3a088274f65596bd0d09920b61ab5da61bbdc7f5049334cf11213945d57e5ac7d055d042b7e024aa2b2f08f0a91260805272dc51051c6e47ad4fa403b02b4510b647ae3d1770bac0326a805bbefd48056c8c121bdb8",
+          "0xb8877c50de7aa1fbf9cd9e8a6b468fe94e76e3363adc0d6e956b9671ba7d2fe663ff6147980a32c689d1070e664d2c440c5ae2e51ef0cf19856d5d094a1cd54dbd47c5a046fad39c601a18b88ab730642942ad269dacee247e22a05cd4b8fbab",
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+          "0x9848c398bfcc8c5576bdf32546c2731ccd1e3586ff495cb0320e249474446df9123b1b3fa6692fa87869980551fb7591132a7af9307f1e616a24c32a0e0dd52470681338bae86c032c61d8b174d4f83f3117080c57cc176e84a1dfbf9215aec1"
+        ]
+      },
+      "potPubkey": "0x93e02b6052719f607dacd3a088274f65596bd0d09920b61ab5da61bbdc7f5049334cf11213945d57e5ac7d055d042b7e024aa2b2f08f0a91260805272dc51051c6e47ad4fa403b02b4510b647ae3d1770bac0326a805bbefd48056c8c121bdb8",
+      "blsSignature": ""
+    },
+    {
+      "numG1Powers": 10,
+      "numG2Powers": 10,
+      "powersOfTau": {
+        "G1Powers": [
+          "0x97f1d3a73197d7942695638c4fa9ac0fc3688c4f9774b905a14e3a3f171bac586c55e83ff97a1aeffb3af00adb22c6bb",
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+          "0xad5b525e5763680513c71cf44ca4fd618d049439168c744183a03ff40a2c2fe6a4654d7cd334e7f576c4b3c3dc2dbcb8",
+          "0xb1cb2f21e1f85c140eac4140ee08999a0b62bb343038d6e0444e3cb3fb511767fa4b48700a470869c54def52f25c8e6d",
+          "0xa7e5cb7c1fa5faa93aadbb912d041ba64d587b815cb900b12440e5391590e17cd5b1102bc67049286a9a88280d8b572f",
+          "0x824323c4e30c0ac13f674bfbdfdca0c2a01c1cbec19616c192a8f8e6a3f4359c041f4c2583da711cb35047255b59e804",
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+          "0x9926c14d88631bc72ec3f1511bdf7b9ab4e7d4a869da6e6672f47bf13ba10e7000ac6598d82ee647d29831755f798aa7",
+          "0xb68bc3aaadcfcd71836b9cbf40d06ff4b313ed3ef30771be36455e7fca9cfa1f0942d309d166043dcd4de2c431017580",
+          "0x8e9421e5155f7a411409588bb880fac5ec89e8e489b5f92e226c472ec440fbc1960806ea06cbfbd963aa0491b554c90c"
+        ],
+        "G2Powers": [
+          "0x93e02b6052719f607dacd3a088274f65596bd0d09920b61ab5da61bbdc7f5049334cf11213945d57e5ac7d055d042b7e024aa2b2f08f0a91260805272dc51051c6e47ad4fa403b02b4510b647ae3d1770bac0326a805bbefd48056c8c121bdb8",
+          "0xb2cc2cfe5fcf7b23eeb066bc4655a934f39ffd70999cc02eacafc7709f90c33f2a0f8749e5dc20c705058660877c139501eb607997d7487abb210faef4b3e9460981d7168a84a2be5c7d044b5200fa0883c88a963f83c9f59ac53bb94507d35a",
+          "0xa16a79ffb866a4cda1be0439f9b395f0f262eba841562bd8adf7c75a36ac5f4c3158d95b292e97092893b12505458b471200cd054ea543cee18b3d6b99409d808e50c4622fe7d6cfa11254c3a749dbe3e3ef94c5d9e3c8e4f105e2ba635b86b0",
+          "0x85a15ee55547645c1eb626e4746d51fa28a66685a05a8cd00c4aee048efc48bfde2082eb2c633d5a558bbdf5783bc61f0cd82b787363d63cca13c570b2dd7a31ab1d5f6b861d8e1907fc2216bbb315eac18d6a0ef30692e86126026d04f090e3",
+          "0xa4a89464fbf75fb83f55412a8f390785e61fdf3b1bc1c21745e818697f25605b55352e17e55dce17fcdf043a1b2da75c19682aa91aef5a35ddd280bc8d0fe51d5688171d8a738cfde753e594159ce12e1f2b5ce83316ff09327b279a922a08fb",
+          "0x89e3644909f5df88512e2b34449583f9f37b1250694f49dd417e45e42642263d74ff85ad79cc0c3a07154d18225188210dd915bb19ff857a791cd7154015ea10df3892bd614e94efb2fb6b65583e26e5e5ba90b2ddce1cba56331c80710a9b53",
+          "0x89628be321e85a9a77beccc6c59aea23d4e2b68e43b4f9f41600393fae6c932917b8d17de1730f2aec54874172fcd5ff035d08fe0240c9ec16dcb46cafe1d20251545e133bde0e6e7bde62eb01faa9a756c67782cd120ee6f72a84315c62f878",
+          "0xb30ca64bc7fd010aef1b0313c581e9a60a4f58f988214e54f66934b2edd75b1a4bd4844907375349be5c02e3f386850d0c7f1418e84cbd55befb3bd954b4fd2872203241b1add8c8632dcb909801515edc2596760b9eb8ca4a0a527d78b24946",
+          "0x94db78262b12066c5ce020ee3568d3135d9a8956736c9e22db69edd328bcb3a84a7284ac8ed42a4968096c55b132266505ddaad15503543778742891c68a2d11915cc60d0470259f3679d0060ac545f7be819946b750f0720841616470589a56",
+          "0xb9f927add3577acc6ee09d98b94836d4d7a09a466d33a73514214938c2fd9f50d063583656b4e1c5ac50c925c17c7bda007dcbddaa5eb714eb23cbc8ccbaf9fa4d4ba45ebc38be1f2d6fb1d95a7eda330ed5f9cc658d6c22a4f7aee7581cce4e"
+        ]
+      },
+      "potPubkey": "0x93e02b6052719f607dacd3a088274f65596bd0d09920b61ab5da61bbdc7f5049334cf11213945d57e5ac7d055d042b7e024aa2b2f08f0a91260805272dc51051c6e47ad4fa403b02b4510b647ae3d1770bac0326a805bbefd48056c8c121bdb8",
+      "blsSignature": ""
+    }
+  ],
+  "ecdsaSignature": ""
+}

parsers.go

@@ -57,6 +57,7 @@ func (s *State) UnmarshalJSON(b []byte) error {
 			return err
 		}
 	}
+	// TODO validate data (G1 & G2 subgroup checks, etc)
 	return err
 }
 
@@ -92,6 +93,61 @@ func (s State) MarshalJSON() ([]byte, error) {
 	return json.Marshal(sStr)
 }
 
+func (c *BatchContribution) UnmarshalJSON(b []byte) error {
+	var cStr batchContributionStr
+	if err := json.Unmarshal(b, &cStr); err != nil {
+		return err
+	}
+	var err error
+	g2 := bls12381.NewG2()
+
+	c.Contributions = make([]Contribution, len(cStr.Contributions))
+	for i := 0; i < len(cStr.Contributions); i++ {
+		c.Contributions[i].NumG1Powers = cStr.Contributions[i].NumG1Powers
+		c.Contributions[i].NumG2Powers = cStr.Contributions[i].NumG2Powers
+		c.Contributions[i].PowersOfTau = &SRS{}
+		c.Contributions[i].PowersOfTau.G1Powers, err =
+			stringsToPointsG1(cStr.Contributions[i].PowersOfTau.G1Powers)
+		if err != nil {
+			return err
+		}
+		c.Contributions[i].PowersOfTau.G2Powers, err =
+			stringsToPointsG2(cStr.Contributions[i].PowersOfTau.G2Powers)
+		if err != nil {
+			return err
+		}
+
+		g2sBytes, err := hex.DecodeString(strings.TrimPrefix(cStr.Contributions[i].PotPubKey, "0x"))
+		if err != nil {
+			return err
+		}
+		c.Contributions[i].PotPubKey, err = g2.FromCompressed(g2sBytes)
+		if err != nil {
+			return err
+		}
+	}
+	return err
+}
+
+func (c BatchContribution) MarshalJSON() ([]byte, error) {
+	var cStr batchContributionStr
+	g2 := bls12381.NewG2()
+
+	cStr.Contributions = make([]contributionStr, len(c.Contributions))
+	for i := 0; i < len(c.Contributions); i++ {
+		cStr.Contributions[i].NumG1Powers = c.Contributions[i].NumG1Powers
+		cStr.Contributions[i].NumG2Powers = c.Contributions[i].NumG2Powers
+		cStr.Contributions[i].PowersOfTau = powersOfTauStr{}
+		cStr.Contributions[i].PowersOfTau.G1Powers =
+			g1PointsToStrings(c.Contributions[i].PowersOfTau.G1Powers)
+		cStr.Contributions[i].PowersOfTau.G2Powers =
+			g2PointsToStrings(c.Contributions[i].PowersOfTau.G2Powers)
+
+		cStr.Contributions[i].PotPubKey = "0x" + hex.EncodeToString(g2.ToCompressed(c.Contributions[i].PotPubKey))
+	}
+	return json.Marshal(cStr)
+}
+
 type powersOfTauStr struct {
 	G1Powers []string `json:"G1Powers"`
 	G2Powers []string `json:"G2Powers"`
@@ -110,6 +166,17 @@ type transcriptStr struct {
 	Witness     witnessStr     `json:"witness"`
 }
 
+type contributionStr struct {
+	NumG1Powers uint64         `json:"numG1Powers"`
+	NumG2Powers uint64         `json:"numG2Powers"`
+	PowersOfTau powersOfTauStr `json:"powersOfTau"`
+	PotPubKey   string         `json:"potPubkey"`
+}
+
+type batchContributionStr struct {
+	Contributions []contributionStr `json:"contributions"`
+}
+
 type stateStr struct {
 	Transcripts                []transcriptStr `json:"transcripts"`
 	ParticipantIDs             []string        `json:"participantIds"`

powersoftau_test.go

@@ -2,6 +2,7 @@ package kzgceremony
 
 import (
 	"encoding/json"
+	"fmt"
 	"io/ioutil"
 	"testing"
 
@@ -43,3 +44,21 @@ func TestComputeNewState(t *testing.T) {
 	err = ioutil.WriteFile("new_state.json", b, 0600)
 	c.Assert(err, qt.IsNil)
 }
+
+func TestBatchContribution(t *testing.T) {
+	c := qt.New(t)
+	j, err := ioutil.ReadFile("batch_contribution_10.json")
+	c.Assert(err, qt.IsNil)
+
+	bc := &BatchContribution{}
+	err = json.Unmarshal(j, bc)
+	c.Assert(err, qt.IsNil)
+
+	nb, err :=
+		bc.Contribute([]byte("1111111111111111111111111111111111111111111111111111111111111111"))
+	c.Assert(err, qt.IsNil)
+
+	b, err := json.Marshal(nb)
+	c.Assert(err, qt.IsNil)
+	fmt.Println(string(b))
+}