PKCS7_DETACHED
int flags = PKCS7_DETACHED, operation = 0, ret = 0, indef = 0;
flags &= ~PKCS7_DETACHED;
flags &= ~PKCS7_DETACHED;
if (flags & PKCS7_DETACHED) {
if (flags & PKCS7_DETACHED)
int flags = PKCS7_DETACHED | PKCS7_STREAM;
#define SMIME_DETACHED PKCS7_DETACHED