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More ECC work to prep for a FIPS mode

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Adam Ierymenko 2024-09-20 14:04:49 -07:00
parent 307befa892
commit 5b7e1ceb68
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2 changed files with 36 additions and 5 deletions
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5
node/ECC.cpp
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@ -8,15 +8,10 @@ Derived from public domain code by D. J. Bernstein.
// This code remains in the public domain.
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include "Constants.hpp"
#include "ECC.hpp"
#include "SHA512.hpp"
#include "Buffer.hpp"
#include "Hashtable.hpp"
#include "Mutex.hpp"
#ifdef __WINDOWS__
#pragma warning(disable: 4146)

36
node/ECC.hpp
View file

@ -11,11 +11,45 @@
*/
/****/
/*
* This file defines the elliptic curve crypto used for ZeroTier V1. The normal
* public version uses C25519 and Ed25519, while the FIPS version uses NIST.
* FIPS builds are completely incompatible with regular ZeroTier, but that's
* fine since FIPS users typically want a fully isolated private network. If you
* are not such a user you probably don't want this.
*/
#ifndef ZT_ECC_HPP
#define ZT_ECC_HPP
#include "Utils.hpp"
#ifdef ZT_FIPS
/* FIPS140/NIST ECC cryptography */
/* Note that to be FIPS we also need to link against a FIPS-certified library. */
#include <openssl/evp.h>
#include <openssl/ec.h>
#include <openssl/err.h>
#include <openssl/pem.h>
#include <openssl/bn.h>
#define ZT_ECC_PUBLIC_KEY_SET_LEN (97 * 2) /* Two ECC P-384 keys */
#define ZT_ECC_PRIVATE_KEY_SET_LEN (48 * 2) /* Two ECC P-384 secret keys */
#define ZT_ECC_SIGNATURE_LEN 96 /* NIST P-384 ECDSA signature */
class ECC
{
public:
struct Public { uint8_t data[ZT_ECC_PUBLIC_KEY_SET_LEN]; };
struct Private { uint8_t data[ZT_ECC_PRIVATE_KEY_SET_LEN]; };
struct Signature { uint8_t data[ZT_ECC_SIGNATURE_LEN]; };
struct Pair { Public pub; Private priv; };
};
#else // Curve25519 / Ed25519
namespace ZeroTier {
#define ZT_ECC_PUBLIC_KEY_SET_LEN 64
@ -166,3 +200,5 @@ private:
} // namespace ZeroTier
#endif
#endif