Overview #The PKCS #7 standard describes general syntax for data that may have cryptography applied to it, such as digital Signatures and digital envelopes.
PKCS #7 is compatible with Privacy-Enhanced Mail (PEM) in that signed-data and signed-and-enveloped-data content, constructed in a Privacy-Enhanced Mail-compatible mode, can be converted into Privacy-Enhanced Mail messages without any cryptographic operations. Privacy-Enhanced Mail messages can similarly be converted into the signed-data and signed-and-enveloped data content types.
PKCS7 Certificate Format Characteristics:
- contains certificate OR Certificate Chain (but does not store the Private Key)
- Often used provide Certificate Chain to Clients