RFC 2440:OpenPGP Message Format
RFC-Ref

service


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... OpenPGP provides data integrity services for messages and data files by using these core technologies: ...
... key management and certificate services, but many of these are beyond the scope of this document. ...
... Both digital signature and confidentiality services may be applied to the same message. First, a signature is generated for the message and ...
... encoding of these binary octets is needed. OpenPGP provides the service of converting the raw 8-bit binary octet stream to a stream ...


... top-level key provides signature services, and the subkeys provide encryption services ...
... services, and the subkeys provide encryption services. Note: in PGP ...



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