/* C code:
struct PKCS15_Ret {
int error_code;
int len;
};
struct PKCS15_Ret PKCS15_wrap(int hash_type, octet message, octet receive) {
int error_code = PKCS15(hashType, &mOct, &cOct);
return struct PKCS15_Ret{ error_code, cOct.len };
}
*/
func PKCS15_PLAIN(hashType, RFS int, msg []byte) ([]byte, error) {
// input
mOct := C.octet{
C.int(len(msg)),
C.int(len(msg)),
(*C.char)(unsafe.Pointer(&msg[0])),
}
// output
r := make([]byte, RFS)
cOct := C.octet{
C.int(0),
C.int(RFS),
(*C.char)(unsafe.Pointer(&r[0])),
}
rtn := C.PKCS15_wrap(C.int(hashType), mOct, cOct)
if rtn.error_code != 1 {
return nil, &Error{code: int(rtn.error_code)}
}
return r[:rtn.len], nil
}
On Wednesday, November 29, 2017 at 3:12:31 PM UTC-8, xingtao zhao wrote:
>
> Make your C function to accept octet parameter, instead of *octet parameter?
> Then there will be no allocations.
>
> On Wednesday, November 29, 2017 at 2:39:38 PM UTC-8, Владислав Митов wrote:
>>
>> So no way around 4 allocations for 2 values?
>
>
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