pub unsafe extern "C" fn PKCS7_encrypt(
certs: *mut stack_st_X509,
b: *mut BIO,
cipher: *const EVP_CIPHER,
flags: c_int,
) -> *mut PKCS7
pub unsafe extern "C" fn PKCS7_encrypt(
certs: *mut stack_st_X509,
b: *mut BIO,
cipher: *const EVP_CIPHER,
flags: c_int,
) -> *mut PKCS7