Method verifyDocument

test/test.examples.js:317–345

(signedDocument)

            }
            
            verifyDocument(signedDocument) {
                this.crypt.setPublicKey(this.publicKey);
                
                const { document, signature, signaturePayload } = signedDocument;
                
                const currentHash = this.simpleHash(document);
                
                if (currentHash !== signaturePayload.documentHash) {
                    return { valid: false, reason: 'Document has been modified' };
                }
                
                const decryptedPayload = this.crypt.decrypt(signature);
                if (!decryptedPayload) {
                    return { valid: false, reason: 'Invalid signature' };
                }
                
                const parsedPayload = JSON.parse(decryptedPayload);
                
                if (JSON.stringify(parsedPayload) !== JSON.stringify(signaturePayload)) {
                    return { valid: false, reason: 'Signature payload mismatch' };
                }
                
                return {
                    valid: true,
                    signedAt: new Date(signaturePayload.timestamp),
                    signer: signaturePayload.signer,
                    documentHash: signaturePayload.documentHash
                };
            }
        }
        
        it("should sign and verify documents", function () {