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42 views

CMS/PKCS#7: specifying signatureAlgorithm with digest?

I'm confused about algorithm selection for Cryptographic Message Syntax (a.k.a. CMS, PKCS#7) signed objects (RFC5652 Section 5.1). The SignerInfo structure (RFC5652 Section 5.3) has two separate ...
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39 views

Downloadable Autonomous System contact information

When under (a security) attack, it might be useful for the victim to first identify the source IP, then potentially contact the offending ISP. There seem to be plenty of tools for the part where an IP ...
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18 views

Enhanced Security Services / CAdES for PKCS7 - multiple signers for SignerInfo's?

In RFC5652, Cryptographic Message Syntax (CMS), section 5.3. SignerInfo Type, there's a sid field that maps to this: SignerIdentifier ::= CHOICE { issuerAndSerialNumber IssuerAndSerialNumber, ...