Rust
Rust
Cape Verde Fatura Eletrónica XML Digital Signature
See more XML Digital Signatures Examples
Demonstrates how to sign XML to create a signed invoice compatible with the Cape Verde Fatura Eletrónica requirements.Note: This example requires Chilkat v9.5.0.89 or greater for a small feature to provide the ability produce mult-line base64 signature ending with
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// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// First create the following XML to be signed. This can be created programmatically as shown in the code below, or
// you can simply load the XML to be signed from a file..
// <?xml version="1.0" encoding="utf-8"?>
// <Dfe xmlns="urn:cv:efatura:xsd:v1.0" DocumentTypeCode="1" Id="CV2210818123456789000010100000000546735014601" Version="1.0">
// <Invoice>
// <LedCode>1</LedCode>
// <Serie>SL</Serie>
// <DocumentNumber>5</DocumentNumber>
// <IssueDate>2021-08-30</IssueDate>
// <IssueTime>00:01:00</IssueTime>
// <TaxPointDate>2021-08-18</TaxPointDate>
// <EmitterParty>
// <TaxId CountryCode="CV">123456789</TaxId>
// <Name>Maria</Name>
// <Address CountryCode="CV">
// <State>Estado do Emissor</State>
// <City>Cidade do Emissor</City>
// <Region>Regi�o do Emissor</Region>
// <Street>Rua do Emissor</Street>
// <StreetDetail>Detalhe da rua do Emissor</StreetDetail>
// <BuildingName>Pr�dio do Emissor</BuildingName>
// <BuildingNumber>1</BuildingNumber>
// <BuildingFloor>2</BuildingFloor>
// <PostalCode>7600</PostalCode>
// <AddressDetail>Detalhe de endere�o do Emissor</AddressDetail>
// <AddressCode>CV774999999999999319</AddressCode>
// </Address>
// <Contacts>
// <Telephone>1234567</Telephone>
// <Mobilephone>1234568</Mobilephone>
// <Telefax>1234569</Telefax>
// <Email>somebody@example.com</Email>
// <Website>emissor.efatura.cv</Website>
// </Contacts>
// </EmitterParty>
// <ReceiverParty>
// <TaxId CountryCode="CV">123456789</TaxId>
// <Name>Nome do Recetor</Name>
// <Address CountryCode="CV">
// <State>Estado do Recetor</State>
// <City>Cidade do Recetor</City>
// <Region>Regi�o do Recetor</Region>
// <Street>Rua do Recetor</Street>
// <StreetDetail>Detalhe da rua do Recetor</StreetDetail>
// <BuildingName>Pr�dio do Recetor</BuildingName>
// <BuildingNumber>2</BuildingNumber>
// <BuildingFloor>3</BuildingFloor>
// <PostalCode>7601</PostalCode>
// <AddressDetail>Detalhe de endere�o do Recetor</AddressDetail>
// <AddressCode>CV774999999999999319</AddressCode>
// </Address>
// <Contacts>
// <Telephone>2234567</Telephone>
// <Mobilephone>2234568</Mobilephone>
// <Telefax>2234569</Telefax>
// <Email>rector@efatura.cv</Email>
// <Website>rector.efatura.cv</Website>
// </Contacts>
// </ReceiverParty>
// <Lines>
// <Line LineTypeCode="N">
// <Id>01</Id>
// <OrderLineReference>1</OrderLineReference>
// <Quantity UnitCode="EA">3.15</Quantity>
// <Price>123456</Price>
// <PriceExtension>388886</PriceExtension>
// <Discount>15</Discount>
// <NetTotal>252776</NetTotal>
// <Tax TaxTypeCode="IVA">
// <TaxPercentage>15</TaxPercentage>
// </Tax>
// <Item>
// <Description>Telem�vel</Description>
// <Name>Telem�vel</Name>
// <BrandName>Apple</BrandName>
// <ModelName>iPhone X</ModelName>
// <EmitterIdentification>TLMV</EmitterIdentification>
// <StandardIdentification>
// <GTIN>12345</GTIN>
// </StandardIdentification>
// <HazardousRiskIndicator>false</HazardousRiskIndicator>
// </Item>
// </Line>
// </Lines>
// <Totals>
// <PriceExtensionTotalAmount>388886</PriceExtensionTotalAmount>
// <ChargeTotalAmount>0</ChargeTotalAmount>
// <DiscountTotalAmount>136110</DiscountTotalAmount>
// <NetTotalAmount>252776</NetTotalAmount>
// <Discount ValueType="P">20</Discount>
// <TaxTotalAmount>37916</TaxTotalAmount>
// <PayableAmount>290692</PayableAmount>
// </Totals>
// <References>
// <Reference>
// <FiscalDocument IsOldDocument="false">CV1200520123456789000112345678901112345678901</FiscalDocument>
// <PaymentAmount>12345</PaymentAmount>
// <Tax TaxTypeCode="IR">
// <TaxPercentage>10</TaxPercentage>
// </Tax>
// </Reference>
// <Reference>
// <FiscalDocument IsOldDocument="false">CV1200520123456789000112345678901112345678903</FiscalDocument>
// <PaymentAmount>98765</PaymentAmount>
// <Tax TaxTypeCode="IVA">
// <TaxPercentage>15</TaxPercentage>
// </Tax>
// </Reference>
// </References>
// <Payments>
// <PaymentDueDate>2021-12-31</PaymentDueDate>
// <PaymentTerms>
// <Note>Juros de 12% a partir da data de vencimento</Note>
// </PaymentTerms>
// <PayeeFinancialAccount>
// <NIB>123456789012345678901</NIB>
// <Name>Nome da Conta 1</Name>
// </PayeeFinancialAccount>
// <PayeeFinancialAccount>
// <NIB>123456789012345678902</NIB>
// <Name>Nome da Conta 2</Name>
// </PayeeFinancialAccount>
// </Payments>
// <Note>Texto livre</Note>
// </Invoice>
// <Transmission>
// <IssueMode>2</IssueMode>
// <TransmitterTaxId CountryCode="CV">123456789</TransmitterTaxId>
// <Software>
// <Code>EMIPUB</Code>
// <Name>DNRE Emissor P�blico</Name>
// <Version>Build #53 12-07-2021 14:00:47 CVT - master</Version>
// </Software>
// <Contingency>
// <LedCode>1</LedCode>
// <IssueDate>2020-01-01</IssueDate>
// <IssueTime>01:02:03</IssueTime>
// <ReasonTypeCode>1</ReasonTypeCode>
// </Contingency>
// </Transmission>
// <RepositoryCode>2</RepositoryCode>
// </Dfe>
let _ = true;
// Create the XML to be signed...
// Use this online tool to generate code from sample XML:
// Generate Code to Create XML
let xml_to_sign = chilkat::Xml::new();
xml_to_sign.set_tag("Dfe");
let _ = xml_to_sign.add_attribute("xmlns", "urn:cv:efatura:xsd:v1.0");
let _ = xml_to_sign.add_attribute("DocumentTypeCode", "1");
let _ = xml_to_sign.add_attribute("Id", "CV2210818123456789000010100000000546735014601");
let _ = xml_to_sign.add_attribute("Version", "1.0");
xml_to_sign.update_child_content("Invoice|LedCode", "1");
xml_to_sign.update_child_content("Invoice|Serie", "SL");
xml_to_sign.update_child_content("Invoice|DocumentNumber", "5");
xml_to_sign.update_child_content("Invoice|IssueDate", "2021-08-30");
xml_to_sign.update_child_content("Invoice|IssueTime", "00:01:00");
xml_to_sign.update_child_content("Invoice|TaxPointDate", "2021-08-18");
let _ = xml_to_sign.update_attr_at("Invoice|EmitterParty|TaxId", true, "CountryCode", "CV");
xml_to_sign.update_child_content("Invoice|EmitterParty|TaxId", "123456789");
xml_to_sign.update_child_content("Invoice|EmitterParty|Name", "Maria");
let _ = xml_to_sign.update_attr_at("Invoice|EmitterParty|Address", true, "CountryCode", "CV");
xml_to_sign.update_child_content("Invoice|EmitterParty|Address|State", "Estado do Emissor");
xml_to_sign.update_child_content("Invoice|EmitterParty|Address|City", "Cidade do Emissor");
xml_to_sign.update_child_content("Invoice|EmitterParty|Address|Region", "Regi�o do Emissor");
xml_to_sign.update_child_content("Invoice|EmitterParty|Address|Street", "Rua do Emissor");
xml_to_sign.update_child_content("Invoice|EmitterParty|Address|StreetDetail", "Detalhe da rua do Emissor");
xml_to_sign.update_child_content("Invoice|EmitterParty|Address|BuildingName", "Pr�dio do Emissor");
xml_to_sign.update_child_content("Invoice|EmitterParty|Address|BuildingNumber", "1");
xml_to_sign.update_child_content("Invoice|EmitterParty|Address|BuildingFloor", "2");
xml_to_sign.update_child_content("Invoice|EmitterParty|Address|PostalCode", "7600");
xml_to_sign.update_child_content("Invoice|EmitterParty|Address|AddressDetail", "Detalhe de endere�o do Emissor");
xml_to_sign.update_child_content("Invoice|EmitterParty|Address|AddressCode", "CV774999999999999319");
xml_to_sign.update_child_content("Invoice|EmitterParty|Contacts|Telephone", "1234567");
xml_to_sign.update_child_content("Invoice|EmitterParty|Contacts|Mobilephone", "1234568");
xml_to_sign.update_child_content("Invoice|EmitterParty|Contacts|Telefax", "1234569");
xml_to_sign.update_child_content("Invoice|EmitterParty|Contacts|Email", "somebody@example.com");
xml_to_sign.update_child_content("Invoice|EmitterParty|Contacts|Website", "emissor.efatura.cv");
let _ = xml_to_sign.update_attr_at("Invoice|ReceiverParty|TaxId", true, "CountryCode", "CV");
xml_to_sign.update_child_content("Invoice|ReceiverParty|TaxId", "123456789");
xml_to_sign.update_child_content("Invoice|ReceiverParty|Name", "Nome do Recetor");
let _ = xml_to_sign.update_attr_at("Invoice|ReceiverParty|Address", true, "CountryCode", "CV");
xml_to_sign.update_child_content("Invoice|ReceiverParty|Address|State", "Estado do Recetor");
xml_to_sign.update_child_content("Invoice|ReceiverParty|Address|City", "Cidade do Recetor");
xml_to_sign.update_child_content("Invoice|ReceiverParty|Address|Region", "Regi�o do Recetor");
xml_to_sign.update_child_content("Invoice|ReceiverParty|Address|Street", "Rua do Recetor");
xml_to_sign.update_child_content("Invoice|ReceiverParty|Address|StreetDetail", "Detalhe da rua do Recetor");
xml_to_sign.update_child_content("Invoice|ReceiverParty|Address|BuildingName", "Pr�dio do Recetor");
xml_to_sign.update_child_content("Invoice|ReceiverParty|Address|BuildingNumber", "2");
xml_to_sign.update_child_content("Invoice|ReceiverParty|Address|BuildingFloor", "3");
xml_to_sign.update_child_content("Invoice|ReceiverParty|Address|PostalCode", "7601");
xml_to_sign.update_child_content("Invoice|ReceiverParty|Address|AddressDetail", "Detalhe de endere�o do Recetor");
xml_to_sign.update_child_content("Invoice|ReceiverParty|Address|AddressCode", "CV774999999999999319");
xml_to_sign.update_child_content("Invoice|ReceiverParty|Contacts|Telephone", "2234567");
xml_to_sign.update_child_content("Invoice|ReceiverParty|Contacts|Mobilephone", "2234568");
xml_to_sign.update_child_content("Invoice|ReceiverParty|Contacts|Telefax", "2234569");
xml_to_sign.update_child_content("Invoice|ReceiverParty|Contacts|Email", "rector@efatura.cv");
xml_to_sign.update_child_content("Invoice|ReceiverParty|Contacts|Website", "rector.efatura.cv");
let _ = xml_to_sign.update_attr_at("Invoice|Lines|Line", true, "LineTypeCode", "N");
xml_to_sign.update_child_content("Invoice|Lines|Line|Id", "01");
xml_to_sign.update_child_content("Invoice|Lines|Line|OrderLineReference", "1");
let _ = xml_to_sign.update_attr_at("Invoice|Lines|Line|Quantity", true, "UnitCode", "EA");
xml_to_sign.update_child_content("Invoice|Lines|Line|Quantity", "3.15");
xml_to_sign.update_child_content("Invoice|Lines|Line|Price", "123456");
xml_to_sign.update_child_content("Invoice|Lines|Line|PriceExtension", "388886");
xml_to_sign.update_child_content("Invoice|Lines|Line|Discount", "15");
xml_to_sign.update_child_content("Invoice|Lines|Line|NetTotal", "252776");
let _ = xml_to_sign.update_attr_at("Invoice|Lines|Line|Tax", true, "TaxTypeCode", "IVA");
xml_to_sign.update_child_content("Invoice|Lines|Line|Tax|TaxPercentage", "15");
xml_to_sign.update_child_content("Invoice|Lines|Line|Item|Description", "Telem�vel");
xml_to_sign.update_child_content("Invoice|Lines|Line|Item|Name", "Telem�vel");
xml_to_sign.update_child_content("Invoice|Lines|Line|Item|BrandName", "Apple");
xml_to_sign.update_child_content("Invoice|Lines|Line|Item|ModelName", "iPhone X");
xml_to_sign.update_child_content("Invoice|Lines|Line|Item|EmitterIdentification", "TLMV");
xml_to_sign.update_child_content("Invoice|Lines|Line|Item|StandardIdentification|GTIN", "12345");
xml_to_sign.update_child_content("Invoice|Lines|Line|Item|HazardousRiskIndicator", "false");
xml_to_sign.update_child_content("Invoice|Totals|PriceExtensionTotalAmount", "388886");
xml_to_sign.update_child_content("Invoice|Totals|ChargeTotalAmount", "0");
xml_to_sign.update_child_content("Invoice|Totals|DiscountTotalAmount", "136110");
xml_to_sign.update_child_content("Invoice|Totals|NetTotalAmount", "252776");
let _ = xml_to_sign.update_attr_at("Invoice|Totals|Discount", true, "ValueType", "P");
xml_to_sign.update_child_content("Invoice|Totals|Discount", "20");
xml_to_sign.update_child_content("Invoice|Totals|TaxTotalAmount", "37916");
xml_to_sign.update_child_content("Invoice|Totals|PayableAmount", "290692");
let _ = xml_to_sign.update_attr_at("Invoice|References|Reference|FiscalDocument", true, "IsOldDocument", "false");
xml_to_sign.update_child_content("Invoice|References|Reference|FiscalDocument", "CV1200520123456789000112345678901112345678901");
xml_to_sign.update_child_content("Invoice|References|Reference|PaymentAmount", "12345");
let _ = xml_to_sign.update_attr_at("Invoice|References|Reference|Tax", true, "TaxTypeCode", "IR");
xml_to_sign.update_child_content("Invoice|References|Reference|Tax|TaxPercentage", "10");
let _ = xml_to_sign.update_attr_at("Invoice|References|Reference[1]|FiscalDocument", true, "IsOldDocument", "false");
xml_to_sign.update_child_content("Invoice|References|Reference[1]|FiscalDocument", "CV1200520123456789000112345678901112345678903");
xml_to_sign.update_child_content("Invoice|References|Reference[1]|PaymentAmount", "98765");
let _ = xml_to_sign.update_attr_at("Invoice|References|Reference[1]|Tax", true, "TaxTypeCode", "IVA");
xml_to_sign.update_child_content("Invoice|References|Reference[1]|Tax|TaxPercentage", "15");
xml_to_sign.update_child_content("Invoice|Payments|PaymentDueDate", "2021-12-31");
xml_to_sign.update_child_content("Invoice|Payments|PaymentTerms|Note", "Juros de 12% a partir da data de vencimento");
xml_to_sign.update_child_content("Invoice|Payments|PayeeFinancialAccount|NIB", "123456789012345678901");
xml_to_sign.update_child_content("Invoice|Payments|PayeeFinancialAccount|Name", "Nome da Conta 1");
xml_to_sign.update_child_content("Invoice|Payments|PayeeFinancialAccount[1]|NIB", "123456789012345678902");
xml_to_sign.update_child_content("Invoice|Payments|PayeeFinancialAccount[1]|Name", "Nome da Conta 2");
xml_to_sign.update_child_content("Invoice|Note", "Texto livre");
xml_to_sign.update_child_content("Transmission|IssueMode", "2");
let _ = xml_to_sign.update_attr_at("Transmission|TransmitterTaxId", true, "CountryCode", "CV");
xml_to_sign.update_child_content("Transmission|TransmitterTaxId", "123456789");
xml_to_sign.update_child_content("Transmission|Software|Code", "EMIPUB");
xml_to_sign.update_child_content("Transmission|Software|Name", "DNRE Emissor P�blico");
xml_to_sign.update_child_content("Transmission|Software|Version", "Build #53 12-07-2021 14:00:47 CVT - master");
xml_to_sign.update_child_content("Transmission|Contingency|LedCode", "1");
xml_to_sign.update_child_content("Transmission|Contingency|IssueDate", "2020-01-01");
xml_to_sign.update_child_content("Transmission|Contingency|IssueTime", "01:02:03");
xml_to_sign.update_child_content("Transmission|Contingency|ReasonTypeCode", "1");
xml_to_sign.update_child_content("RepositoryCode", "2");
let gen_ = chilkat::XmlDSigGen::new();
gen_.set_sig_location("Dfe");
gen_.set_sig_location_mod(0);
gen_.set_sig_id("xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac");
gen_.set_sig_namespace_prefix("ds");
gen_.set_sig_namespace_uri("http://www.w3.org/2000/09/xmldsig#");
gen_.set_sig_value_id("xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-sigvalue");
gen_.set_signed_info_canon_alg("C14N");
gen_.set_signed_info_digest_method("sha256");
// Set the KeyInfoId before adding references..
gen_.set_key_info_id("xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-keyinfo");
// Create an Object to be added to the Signature.
let object1 = chilkat::Xml::new();
object1.set_tag("xades:QualifyingProperties");
let _ = object1.add_attribute("xmlns:xades", "http://uri.etsi.org/01903/v1.3.2#");
let _ = object1.add_attribute("xmlns:xades141", "http://uri.etsi.org/01903/v1.4.1#");
let _ = object1.add_attribute("Target", "#xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac");
let _ = object1.update_attr_at("xades:SignedProperties", true, "Id", "xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-signedprops");
object1.update_child_content("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime", "TO BE GENERATED BY CHILKAT");
let _ = object1.update_attr_at("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestMethod", true, "Algorithm", "http://www.w3.org/2001/04/xmlenc#sha256");
object1.update_child_content("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestValue", "TO BE GENERATED BY CHILKAT");
object1.update_child_content("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:IssuerSerialV2", "TO BE GENERATED BY CHILKAT");
let _ = object1.update_attr_at("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat", true, "ObjectReference", "#xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-ref0");
object1.update_child_content("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Description", "DFE Signature");
object1.update_child_content("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Identifier", "efatura-uri");
object1.update_child_content("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:DocumentationReferences|xades:DocumentationReference", "https://efatura.cv");
object1.update_child_content("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:MimeType", "text/xml");
object1.update_child_content("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Encoding", "UTF-8");
object1.update_child_content("xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication|xades:CommitmentTypeId|xades:Identifier", "http://uri.etsi.org/01903/v1.2.2#ProofOfApproval");
object1.update_child_content("xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication|xades:CommitmentTypeId|xades:Description", "Indicates that the signer has approved the content of the signed data object");
object1.update_child_content("xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication|xades:AllSignedDataObjects", "");
object1.update_child_content("xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication[1]|xades:CommitmentTypeId|xades:Identifier", "http://uri.etsi.org/01903/v1.2.2#ProofOfOrigin");
object1.update_child_content("xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication[1]|xades:CommitmentTypeId|xades:Description", "Indicates that the signer recognizes to have created, approved and sent the signed data object");
object1.update_child_content("xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication[1]|xades:ObjectReference", "#xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-ref0");
object1.update_child_content("xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication[1]|xades:CommitmentTypeQualifiers|xades:CommitmentTypeQualifier", "CV-FE-123456789");
let _ = gen_.add_object("", &object1.get_xml().unwrap_or_default(), "", "");
// -------- Reference 1 --------
let _ = gen_.add_same_doc_ref("CV2210818123456789000010100000000546735014601", "sha256", "", "", "");
let _ = gen_.set_ref_id_attr("CV2210818123456789000010100000000546735014601", "xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-ref0");
// -------- Reference 2 --------
let _ = gen_.add_same_doc_ref("xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-keyinfo", "sha256", "C14N", "", "");
// -------- Reference 3 --------
let _ = gen_.add_object_ref("xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-signedprops", "sha256", "C14N", "", "http://uri.etsi.org/01903#SignedProperties");
// Provide a certificate + private key. (PFX password is test123)
let cert = chilkat::Cert::new();
if cert.load_pfx_file("qa_data/pfx/cert_test123.pfx", "test123").is_err() {
println!("{}", cert.last_error_text());
return;
}
let _ = gen_.set_x509_cert(&cert, true);
gen_.set_key_info_type("X509Data");
gen_.set_x509_type("IssuerSerial,SubjectName,Certificate");
// Load XML to be signed...
let sb_xml = chilkat::StringBuilder::new();
let _ = xml_to_sign.get_xml_sb(&sb_xml);
// Note: The last keyword (Base64Cr13Entity) requires Chilkat v9.5.0.89 or later.
gen_.set_behaviors("IndentedSignature,Base64Cr13Entity,ForceAddEnvelopedSignatureTransform,Base64Cr13Entity");
// Sign the XML...
if gen_.create_xml_d_sig_sb(&sb_xml).is_err() {
println!("{}", gen_.last_error_text());
return;
}
// -----------------------------------------------
// Save the signed XML to a file.
let _ = sb_xml.write_file("qa_output/signedXml.xml", "utf-8", false).is_ok();
println!("{}", sb_xml.get_as_string().unwrap_or_default());
// ----------------------------------------
// Verify the signatures we just produced...
let verifier = chilkat::XmlDSig::new();
if verifier.load_signature_sb(&sb_xml).is_err() {
println!("{}", verifier.last_error_text());
return;
}
let num_sigs = verifier.num_signatures();
let mut verify_idx = 0;
while verify_idx < num_sigs {
verifier.set_selector(verify_idx);
if verifier.verify_signature(true).is_err() {
println!("{}", verifier.last_error_text());
return;
}
verify_idx = verify_idx + 1;
}
println!("All signatures were successfully verified.");