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Security
Signed Exchange (.sxg) Decoder
Decode metadata from Signed Exchange (.sxg) files showing certificate, validity, fallback URL, and integrity hash.
Magic / Versão
Fallback URL
Campos do Signature
Validade (date → expires)
Decodificação leve: extrai cabeçalho/magic do binário e parse do Signature (Structured Headers RFC 8941). Não verifica certificado nem MICE.
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