xml-dsig

The open standard for proving any file is real, unaltered and sealed

Biblioteca Go para emissao de documentos fiscais eletronicos brasileiros: NF-e e NFC-e no leiaute 4.00, com assinatura digital e comunicacao com a SEFAZ

Java/Maven CLI that applies an enveloped XML digital signature (XML-DSig: RSA-SHA1, inclusive C14N, X509Data) inside the ext:ExtensionContent element of UBL 2.1 documents — the signing step Peru's SUNAT requires for electronic invoices, boletas, credit/debit notes, and despatch advices (guías de remisión).

Emissor de NF-e modelo 55 em TypeScript: XML validado contra XSD oficial, assinatura XML-DSig, numeração concorrente, Postgres multi-tenant e SOAP com TLS mútuo.

ZATCA (Fatoora) Phase-2 e-invoicing for PHP — UBL 2.1 XML, QR, XAdES signing, business rules

Independent, open-source SDKs for DGII e-CF electronic invoicing in the Dominican Republic — TypeScript (npm @deuriib/dgii-ecf) and Python (PyPI py-dgii-ecf). XMLDSig signing (C14N + RSA-SHA256), SEED auth, e-CF/RFCE submission, status queries, idempotent retries. MIT.

Malaysia e-invoicing XML signature implementation

Parse and verify SAML in DuckDB with SQL — XML-DSig / C14N signature validation and golden-SAML / XML-signature-wrapping detection. A VGI worker.

Biblioteca Java para assinatura digital de XML com XML-DSig (Enveloped), compatível com o padrão ICP-Brasil para documentos fiscais, suportando certificados A1 (.pfx) e algoritmos RSA-SHA1.