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

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).

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.

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.