use crate::aws_lc::{BN_bin2bn, BN_bn2bin, BN_new, BN_num_bytes, BN_set_u64, BIGNUM};
use crate::ptr::{ConstPointer, DetachableLcPtr, LcPtr};
use core::ptr::null_mut;
impl TryFrom<&[u8]> for LcPtr<BIGNUM> {
type Error = ();
fn try_from(bytes: &[u8]) -> Result<Self, Self::Error> {
unsafe { LcPtr::new(BN_bin2bn(bytes.as_ptr(), bytes.len(), null_mut())) }
}
}
impl TryFrom<u64> for LcPtr<BIGNUM> {
type Error = ();
fn try_from(value: u64) -> Result<Self, Self::Error> {
unsafe {
let mut bn = LcPtr::new(BN_new())?;
if 1 != BN_set_u64(*bn.as_mut(), value) {
return Err(());
}
Ok(bn)
}
}
}
impl TryFrom<&[u8]> for DetachableLcPtr<BIGNUM> {
type Error = ();
fn try_from(bytes: &[u8]) -> Result<Self, Self::Error> {
unsafe { DetachableLcPtr::new(BN_bin2bn(bytes.as_ptr(), bytes.len(), null_mut())) }
}
}
impl TryFrom<u64> for DetachableLcPtr<BIGNUM> {
type Error = ();
fn try_from(value: u64) -> Result<Self, Self::Error> {
unsafe {
let bn = DetachableLcPtr::new(BN_new())?;
if 1 != BN_set_u64(*bn, value) {
return Err(());
}
Ok(bn)
}
}
}
impl ConstPointer<BIGNUM> {
pub(crate) fn to_be_bytes(&self) -> Vec<u8> {
unsafe {
let bn_bytes = BN_num_bytes(**self);
let mut byte_vec = Vec::with_capacity(bn_bytes as usize);
let out_bytes = BN_bn2bin(**self, byte_vec.as_mut_ptr());
debug_assert_eq!(out_bytes, bn_bytes as usize);
byte_vec.set_len(out_bytes);
byte_vec
}
}
}