Implement server-side support for sk-ecdsa U2F-backed keys (#142) * Implement server-side support for sk-ecdsa U2F-backed keys * Fix out-of-bounds read on normal ecdsa-sha2-[identifier] keys * Fix one more potential out-of-bounds read * Check if nistp256 curve is used in sk-ecdsa-sha2- key It's the only allowed curve per PROTOCOL.u2f specification * Implement server-side support for sk-ed25519 FIDO2-backed keys * Keys with type sk-* make no sense as host keys, so they should be disabled * fix typo * Make sk-ecdsa call buf_ecdsa_verify This reduces code duplication, the SK code just handles the different message format. * Reduce sk specific code The application id can be stored in signkey, then we don't need to call sk-specific functions from svr-authpubkey * Remove debugging output, which causes compilation errors with DEBUG_TRACE disabled * Proper cleanup of sk_app Co-authored-by: Matt Johnston <[email protected]>

#ifndef DROPBEAR_DH_GROUPS_H
#define DROPBEAR_DH_GROUPS_H
#include "options.h"

#if DROPBEAR_NORMAL_DH

#if DROPBEAR_DH_GROUP1
#define DH_P_1_LEN 128
extern const unsigned char dh_p_1[DH_P_1_LEN];
#endif

#if DROPBEAR_DH_GROUP14
#define DH_P_14_LEN 256
extern const unsigned char dh_p_14[DH_P_14_LEN];
#endif

#if DROPBEAR_DH_GROUP16
#define DH_P_16_LEN 512
extern const unsigned char dh_p_16[DH_P_16_LEN];
#endif

extern const int DH_G_VAL;

#endif /* DROPBEAR_NORMAL_DH */

#endif