The CERT_SIGNED_CONTENT_INFO structure is a "to be signed" encoded content and its signature. The ToBeSigned member is the encoded CERT_INFO, CRL_INFO, or CERT_REQUEST_INFO.
typedef struct _CERT_SIGNED_CONTENT_INFO {
CRYPT_DER_BLOB ToBeSigned;
CRYPT_ALGORITHM_IDENTIFIER SignatureAlgorithm;
CRYPT_BIT_BLOB Signature;
} CERT_SIGNED_CONTENT_INFO, *PCERT_SIGNED_CONTENT_INFO;
BLOB Structure, CRYPT_ALGORITHM_IDENTIFIER, CRYPT_BIT_BLOB