FAQs: openssl

If you try to verify the signature of a p7m file without the Certification Authority (la CA), the verification fails ("unable to load certificate") because we do not have CA trust certificates (so-called Trusts).
These Certificate Authorities have been defined by Italian law and are registered on the CNIPA, which since December 2009 has become DigitPA, as a certificate of XML certificates and found them on the same site at https://applicazioni.cnipa.gov.it/TSL/_IT_TSL_signed.xml.

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Vedi la faq in italiano If you try to verify the signature of a p7m file without the Certificati... Click to see the complete FAQ ...

Consider the case where the signed document is a pdf (document.pdf.p7m).

To verify the signature and extract the content file, we use the openssl command with the smime parameter for signature verification (-verify)

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Vedi la faq in italiano Consider the case where the signed document is a pdf (document.pdf.p7m).... Click to see the complete FAQ ...

Let's consider the case where the signed document is a pdf (document.pdf.p7m).

To extract the certificate used to sign the p7m we use the openssl command with the pkcs parameter

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Vedi la faq in italiano Let's consider the case where the signed document is a pdf (document.pdf... Click to see the complete FAQ ...

Let's consider the case where the signed document is a pdf (document.pdf.p7m).

To extract the content file we use the openssl command with the smime parameter for signature verification (-verify)

(more…)

Vedi la faq in italiano Let's consider the case where the signed document is a pdf (document.pdf... Click to see the complete FAQ ...