@transmute/bbs-bls12381-signature-2020/dist/bbs-bls12381-signature-2020.cjs.production.min.js

Transmute implementation of https://w3id.org/security/suites/bls12381-2020

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a.ensureSuiteContext=function(e){var t=e.document,r="https://w3id.org/security/suites/bls12381-2020/v1";if(!(t["@context"]===r||Array.isArray(t["@context"])&&t["@context"].includes(r)))throw new TypeError("The document to be signed must contain this suite's @context, \""+r+'".')},a.getVerificationMethod=function(){var e=i(s.mark((function e(r){var n,o,a;return s.wrap((function(e){for(;;)switch(e.prev=e.next){case 0:if(n=r.documentLoader,"object"==typeof(o=r.proof.verificationMethod)&&(o=o.id),o){e.next=5;break}throw new Error('No "verificationMethod" found in proof.');case 5:return e.next=7,t.frame(o,{"@context":d,"@embed":"@always",id:o},{documentLoader:n,compactToRelative:!1,expandContext:d});case 7:if(a=e.sent){e.next=10;break}throw new Error("Verification method "+o+" not found.");case 10:if(void 0===a.revoked){e.next=12;break}throw new Error("The verification method has been revoked.");case 12:return e.abrupt("return",a);case 13:case"end":return e.stop()}}),e)})));return 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L=a.sent,a.next=20,t.frame(L,d,{documentLoader:h});case 20:return M=a.sent,a.next=23,y.createVerifyDocumentData(M,{documentLoader:h,expansionMap:l});case 23:if(k=a.sent,P=g.length,E=Array.from(Array(P).keys()),(V=k.map((function(e){return b.indexOf(e)+P}))).length===k.length){a.next=29;break}throw new Error("Some statements in the reveal document not found in original proof");case 29:if(D=E.concat(V),v){a.next=34;break}return a.next=33,n.randomBytes(50);case 33:v=a.sent;case 34:return x.nonce=Buffer.from(v).toString("base64"),B=g.concat(w).map((function(e){return new Uint8Array(Buffer.from(e))})),a.next=38,this.getVerificationMethod({proof:f,document:c,documentLoader:h,expansionMap:l});case 38:return j=a.sent,a.next=41,r.Bls12381G2KeyPair.from(j);case 41:return S=a.sent,a.next=44,o.blsCreateProof({messages:B,revealed:D,signature:new Uint8Array(m),nonce:v,publicKey:new Uint8Array(S.publicKey)});case 44:return 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t.proofValue,e.abrupt("return",this.canonize(t,{documentLoader:n,expansionMap:o,skipExpansion:!1}));case 5:case"end":return e.stop()}}),e,this)})));return function(t,r){return e.apply(this,arguments)}}(),a.createVerifyData=function(){var e=i(s.mark((function e(t){var r,n,o,a,i;return s.wrap((function(e){for(;;)switch(e.prev=e.next){case 0:return r=t.proof,n=t.document,o=t.documentLoader,a=t.expansionMap,e.next=3,this.createVerifyProofData(r,{documentLoader:o,expansionMap:a});case 3:return i=e.sent,e.next=6,this.createVerifyDocumentData(n,{documentLoader:o,expansionMap:a});case 6:return e.abrupt("return",i.concat(e.sent));case 8:case"end":return e.stop()}}),e,this)})));return function(t){return e.apply(this,arguments)}}(),a.createVerifyProofData=function(){var e=i(s.mark((function e(t,r){var n,o;return s.wrap((function(e){for(;;)switch(e.prev=e.next){case 0:return n=r.documentLoader,o=r.expansionMap,e.next=3,this.canonizeProof(t,{documentLoader:n,expansionMap:o});case 3:return e.abrupt("return",e.sent.split("\n").filter((function(e){return e.length>0})));case 5:case"end":return e.stop()}}),e,this)})));return function(t,r){return e.apply(this,arguments)}}(),a.createVerifyDocumentData=function(){var e=i(s.mark((function e(t,r){var n,o;return s.wrap((function(e){for(;;)switch(e.prev=e.next){case 0:return n=r.documentLoader,o=r.expansionMap,e.next=3,this.canonize(t,{documentLoader:n,expansionMap:o});case 3:return e.abrupt("return",e.sent.split("\n").filter((function(e){return e.length>0})));case 5:case"end":return e.stop()}}),e,this)})));return function(t,r){return e.apply(this,arguments)}}(),a.verifyProof=function(){var e=i(s.mark((function e(t){var n,a,i,u,c,f,p,d,h,l,v,m,y;return s.wrap((function(e){for(;;)switch(e.prev=e.next){case 0:return n=t.document,a=t.documentLoader,i=t.expansionMap,u=t.purpose,c=t.proof,e.prev=2,c.type="BbsBlsSignature2020",e.next=6,this.createVerifyProofData(c,{documentLoader:a,expansionMap:i});case 6:return f=e.sent,e.next=9,this.createVerifyProofData(n,{documentLoader:a,expansionMap:i});case 9:return p=e.sent.map((function(e){return e.replace(/<urn:bnid:(_:c14n[0-9]+)>/g,"$1")})),d=f.concat(p).map((function(e){return new Uint8Array(Buffer.from(e))})),e.next=14,this.getVerificationMethod({proof:c,document:n,documentLoader:a,expansionMap:i});case 14:return h=e.sent,e.next=17,r.Bls12381G2KeyPair.from(h);case 17:return l=e.sent,e.next=20,o.blsVerifyProof({proof:new Uint8Array(Buffer.from(c.proofValue,"base64")),publicKey:new Uint8Array(l.publicKey),messages:d,nonce:new Uint8Array(Buffer.from(c.nonce,"base64"))});case 20:return v=e.sent,e.next=23,u.validate(c,{document:n,suite:this,verificationMethod:h,documentLoader:a,expansionMap:i});case 23:if(y=(m=e.sent).error,m.valid){e.next=28;break}throw y;case 28:return e.abrupt("return",v);case 31:return e.prev=31,e.t0=e.catch(2),e.abrupt("return",{verified:!1,error:e.t0});case 34:case"end":return e.stop()}}),e,this,[[2,31]])})));return function(t){return e.apply(this,arguments)}}(),e}();h.type="BbsBlsSignatureProof2020",Object.keys(r).forEach((function(e){"default"!==e&&Object.defineProperty(exports,e,{enumerable:!0,get:function(){return r[e]}})})),exports.BbsBlsSignature2020=p,exports.BbsBlsSignatureProof2020=h;
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