Add SHA384 support, more cleanup

node/C25519.cpp

@@ -2696,7 +2696,7 @@ void get_hram(unsigned char *hram, const unsigned char *sm, const unsigned char
 	for (i = 64;i < smlen;++i) playground[i] = sm[i];
 
 	//crypto_hash_sha512(hram,playground,smlen);
-	ZeroTier::SHA512::hash(hram,playground,(unsigned int)smlen);
+	ZeroTier::SHA512(hram,playground,(unsigned int)smlen);
 }
 
 //////////////////////////////////////////////////////////////////////////////
@@ -2716,11 +2716,11 @@ void C25519::agree(const C25519::Private &mine,const C25519::Public &their,void
 	unsigned char digest[64];
 
 	crypto_scalarmult(rawkey,mine.data,their.data);
-	SHA512::hash(digest,rawkey,32);
+	SHA512(digest,rawkey,32);
 	for(unsigned int i=0,k=0;i<keylen;) {
 		if (k == 64) {
 			k = 0;
-			SHA512::hash(digest,digest,64);
+			SHA512(digest,digest,64);
 		}
 		((unsigned char *)keybuf)[i++] = digest[k++];
 	}
@@ -2729,7 +2729,7 @@ void C25519::agree(const C25519::Private &mine,const C25519::Public &their,void
 void C25519::sign(const C25519::Private &myPrivate,const C25519::Public &myPublic,const void *msg,unsigned int len,void *signature)
 {
 	unsigned char digest[64]; // we sign the first 32 bytes of SHA-512(msg)
-	SHA512::hash(digest,msg,len);
+	SHA512(digest,msg,len);
 
 #ifdef ZT_USE_FAST_X64_ED25519
 	ed25519_amd64_asm_sign(myPrivate.data + 32,myPublic.data + 32,digest,(unsigned char *)signature);
@@ -2743,7 +2743,7 @@ void C25519::sign(const C25519::Private &myPrivate,const C25519::Public &myPubli
 	unsigned char hram[crypto_hash_sha512_BYTES];
 	unsigned char *sig = (unsigned char *)signature;
 
-	SHA512::hash(extsk,myPrivate.data + 32,32);
+	SHA512(extsk,myPrivate.data + 32,32);
 	extsk[0] &= 248;
 	extsk[31] &= 127;
 	extsk[31] |= 64;
@@ -2753,7 +2753,7 @@ void C25519::sign(const C25519::Private &myPrivate,const C25519::Public &myPubli
 	for(unsigned int i=0;i<32;i++)
 		sig[64 + i] = digest[i];
 
-	SHA512::hash(hmg,sig + 32,64);
+	SHA512(hmg,sig + 32,64);
 
 	/* Computation of R */
 	sc25519_from64bytes(&sck, hmg);
@@ -2785,7 +2785,7 @@ bool C25519::verify(const C25519::Public &their,const void *msg,unsigned int len
 	const unsigned char *sig = (const unsigned char *)signature;
 	unsigned char digest[64]; // we sign the first 32 bytes of SHA-512(msg)
 	unsigned char sigtmp[96];
-	SHA512::hash(digest,msg,len);
+	SHA512(digest,msg,len);
 
 	if ((siglen == 96)&&(!Utils::secureEq(sig+64,digest,32))) {
 		return false;
@@ -2831,7 +2831,7 @@ void C25519::_calcPubED(C25519::Pair &kp)
 
 	// Second 32 bytes of pub and priv are the keys for ed25519
 	// signing and verification.
-	SHA512::hash(extsk,kp.priv.data + 32,32);
+	SHA512(extsk,kp.priv.data + 32,32);
 	extsk[0] &= 248;
 	extsk[31] &= 127;
 	extsk[31] |= 64;

node/Identity.cpp

@@ -49,7 +49,7 @@ namespace ZeroTier {
 static inline void _computeMemoryHardHash(const void *publicKey,unsigned int publicKeyBytes,void *digest,void *genmem)
 {
 	// Digest publicKey[] to obtain initial digest
-	SHA512::hash(digest,publicKey,publicKeyBytes);
+	SHA512(digest,publicKey,publicKeyBytes);
 
 	// Initialize genmem[] using Salsa20 in a CBC-like configuration since
 	// ordinary Salsa20 is randomly seek-able. This is good for a cipher
@@ -123,7 +123,7 @@ void Identity::generate(const Type t)
 			do {
 				ECC384GenerateKey(_k.t1.pub,_k.t1.priv);
 				// TODO
-				SHA512::hash(digest,_k.t1.pub,ZT_ECC384_PUBLIC_KEY_SIZE);
+				SHA512(digest,_k.t1.pub,ZT_ECC384_PUBLIC_KEY_SIZE);
 				_address.setTo(digest + 59,ZT_ADDRESS_LENGTH);
 			} while (_address.isReserved());
 			_type = P384;

node/Identity.hpp

@@ -75,6 +75,8 @@ public:
 
 	~Identity() { Utils::burn(reinterpret_cast<void *>(this),sizeof(Identity)); }
 
+	inline void zero() { memset(reinterpret_cast<void *>(this),0,sizeof(Identity)); }
+
 	inline Identity &operator=(const Identity &id)
 	{
 		memcpy(reinterpret_cast<void *>(this),&id,sizeof(Identity));
@@ -118,10 +120,10 @@ public:
 		if (_hasPrivate) {
 			switch(_type) {
 				case C25519:
-					SHA512::hash(sha,_k.t0.priv.data,ZT_C25519_PRIVATE_KEY_LEN);
+					SHA512(sha,_k.t0.priv.data,ZT_C25519_PRIVATE_KEY_LEN);
 					return true;
 				case P384:
-					SHA512::hash(sha,_k.t1.priv,ZT_ECC384_PRIVATE_KEY_SIZE);
+					SHA512(sha,_k.t1.priv,ZT_ECC384_PRIVATE_KEY_SIZE);
 					return true;
 			}
 		}
@@ -139,10 +141,10 @@ public:
 		if (_hasPrivate) {
 			switch(_type) {
 				case C25519:
-					SHA512::hash(sha,_k.t0.pub.data,ZT_C25519_PUBLIC_KEY_LEN);
+					SHA512(sha,_k.t0.pub.data,ZT_C25519_PUBLIC_KEY_LEN);
 					return true;
 				case P384:
-					SHA512::hash(sha,_k.t1.pub,ZT_ECC384_PUBLIC_KEY_SIZE);
+					SHA512(sha,_k.t1.pub,ZT_ECC384_PUBLIC_KEY_SIZE);
 					return true;
 			}
 		}
@@ -175,7 +177,7 @@ public:
 			case P384:
 				if (siglen < ZT_ECC384_SIGNATURE_SIZE)
 					return 0;
-				SHA512::hash(h,data,len);
+				SHA512(h,data,len);
 				ECC384ECDSASign(_k.t1.priv,h,(uint8_t *)sig);
 				return ZT_ECC384_SIGNATURE_SIZE;
 		}
@@ -200,7 +202,7 @@ public:
 			case P384:
 				if (siglen != ZT_ECC384_SIGNATURE_SIZE)
 					return false;
-				SHA512::hash(h,data,len);
+				SHA512(h,data,len);
 				return ECC384ECDSAVerify(_k.t1.pub,h,(const uint8_t *)sig);
 		}
 		return false;
@@ -227,12 +229,12 @@ public:
 					return true;
 				case P384:
 					ECC384ECDH(id._k.t1.pub,_k.t1.priv,ecc384RawSecret);
-					SHA512::hash(h,ecc384RawSecret,sizeof(ecc384RawSecret));
+					SHA512(h,ecc384RawSecret,sizeof(ecc384RawSecret));
 					unsigned int hi = 0;
 					for(unsigned int i=0;i<klen;++i) {
 						if (hi == 64) {
 							hi = 0;
-							SHA512::hash(h,h,64);
+							SHA512(h,h,64);
 						}
 						((uint8_t *)key)[i] = h[hi++];
 					}

node/Locator.hpp

@@ -31,10 +31,15 @@
 #include "Identity.hpp"
 #include "InetAddress.hpp"
 #include "Utils.hpp"
+#include "Buffer.hpp"
+#include "SHA512.hpp"
 
 #include <algorithm>
 #include <vector>
 
+#define ZT_LOCATOR_MAX_PHYSICAL_ADDRESSES 255
+#define ZT_LOCATOR_MAX_VIRTUAL_ADDRESSES 255
+
 namespace ZeroTier {
 
 /**
@@ -48,22 +53,139 @@ namespace ZeroTier {
 class Locator
 {
 public:
-	Locator() :
-		_signatureLength(0) {}
+	Locator() : _signatureLength(0) {}
 
 	inline const std::vector<InetAddress> &phy() const { return _physical; }
 	inline const std::vector<Identity> &virt() const { return _virtual; }
 
-	inline bool sign(const Identity &signingId)
+	inline void add(const InetAddress &ip)
+	{
+		if (_physical.size() < ZT_LOCATOR_MAX_PHYSICAL_ADDRESSES)
+			_physical.push_back(ip);
+	}
+	inline void add(const Identity &zt)
+	{
+		if (_virtual.size() < ZT_LOCATOR_MAX_VIRTUAL_ADDRESSES)
+			_virtual.push_back(zt);
+	}
+	inline void finish(const Identity &id,const int64_t ts)
 	{
+		_ts = ts;
+		_id = id;
 		std::sort(_physical.begin(),_physical.end());
+		_physical.erase(std::unique(_physical.begin(),_physical.end()),_physical.end());
 		std::sort(_virtual.begin(),_virtual.end());
-		_id = signingId;
+		_virtual.erase(std::unique(_virtual.begin(),_virtual.end()),_virtual.end());
+	}
+
+	inline bool sign(const Identity &signingId)
+	{
+		if (!signingId.hasPrivate())
+			return false;
+		if (signingId == _id) {
+			_signedBy.zero();
+		} else {
+			_signedBy = signingId;
+		}
+		Buffer<65536> *tmp = new Buffer<65536>();
+		try {
+			serialize(*tmp,true);
+			_signatureLength = signingId.sign(tmp->data(),tmp->size(),_signature,ZT_SIGNATURE_BUFFER_SIZE);
+			delete tmp;
+			return (_signatureLength > 0);
+		} catch ( ... ) {
+			delete tmp;
+			return false;
+		}
+	}
+
+	inline bool verify() const
+	{
+		if ((_signatureLength == 0)||(_signatureLength > sizeof(_signature)))
+			return false;
+		Buffer<16384> *tmp;
+		try {
+			tmp = new Buffer<16384>(); // 16384 would be huge
+			serialize(*tmp,true);
+			const bool ok = (_signedBy) ? _signedBy.verify(tmp->data(),tmp->size(),_signature,_signatureLength) : _id.verify(tmp->data(),tmp->size(),_signature,_signatureLength);
+			delete tmp;
+			return ok;
+		} catch ( ... ) {
+			delete tmp;
+			return false;
+		}
+	}
+
+	template<unsigned int C>
+	inline void serialize(Buffer<C> &b,const bool forSign = false) const
+	{
+		if (forSign) b.append((uint64_t)0x7f7f7f7f7f7f7f7fULL);
+
+		b.append((uint8_t)0; // version/flags, currently 0
+		b.append((uint64_t)_ts);
+		_id.serialise(b,false);
+		if (_signedBy) {
+			b.append((uint8_t)1); // number of signers
+			_signedBy.serialize(b,false);
+		} else {
+			b.append((uint8_t)0); // signer is _id
+		}
+		b.append((uint8_t)_physical.size());
+		for(std::vector<InetAddress>::const_iterator i(_physical.begin());i!=_physical.end();++i)
+			i->serialize(b);
+		b.append((uint8_t)_virtual.size());
+		for(std::vector<Identity>::const_iterator i(_virtual.begin());i!=_virtual.end();++i)
+			i->serialize(b,false);
+		if (!forSign) {
+			b.append((uint16_t)_signatureLength);
+			b.append(_signature,_signatureLength);
+		}
+		b.append((uint16_t)0); // length of additional fields, currently 0
+
+		if (forSign) b.append((uint64_t)0x7f7f7f7f7f7f7f7fULL);
+	}
+
+	template<unsigned int C>
+	inline unsigned int deserialize(const Buffer<C> &b,unsigned int startAt = 0)
+	{
+		unsigned int p = startAt;
+
+		if (b[p++] != 0)
+			throw ZT_EXCEPTION_INVALID_SERIALIZED_DATA_INVALID_TYPE;
+		_ts = (int64_t)b.template at<uint64_t>(p); p += 8;
+		p += _id.deserialize(b,p);
+		const unsigned int signerCount = b[p++];
+		if (signerCount > 1)
+			throw ZT_EXCEPTION_INVALID_SERIALIZED_DATA_OVERFLOW;
+		if (signerCount == 1) {
+			p += _signedBy.deserialize(b,p);
+		} else {
+			_signedBy.zero();
+		}
+		const unsigned int physicalCount = b[p++];
+		_physical.resize(physicalCount);
+		for(unsigned int i=0;i<physicalCount;++i)
+			p += _physical[i].deserialize(b,p);
+		const unsigned int virtualCount = b[p++];
+		_virtual.resize(virtualCount);
+		for(unsigned int i=0;i<virtualCount;++i)
+			p += _virtual[i].deserialize(b,p);
+		_signatureLen = b.template at<uint16_t>(p); p += 2;
+		if (_signatureLength > ZT_SIGNATURE_BUFFER_SIZE)
+			throw ZT_EXCEPTION_INVALID_SERIALIZED_DATA_OVERFLOW;
+		memcpy(_signature,b.field(p,_signatureLength),_signatureLength);
+		p += _signatureLength;
+		p += b.template at<uint16_t>(p); p += 2;
+		if (p > b.size())
+			throw ZT_EXCEPTION_INVALID_SERIALIZED_DATA_OVERFLOW;
+
+		return (p - startAt);
 	}
 
 private:
 	int64_t _ts;
 	Identity _id;
+	Identity _signedBy; // signed by _id if nil/zero
 	std::vector<InetAddress> _physical;
 	std::vector<Identity> _virtual;
 	unsigned int _signatureLength;

node/SHA512.cpp

@@ -14,17 +14,29 @@ Public domain.
 #include "SHA512.hpp"
 #include "Utils.hpp"
 
+#if 0
+
 #ifdef __APPLE__
 #include <CommonCrypto/CommonDigest.h>
 #define ZT_HAVE_NATIVE_SHA512
 namespace ZeroTier {
-void SHA512::hash(void *digest,const void *data,unsigned int len)
+
+void SHA512(void *digest,const void *data,unsigned int len)
 {
 	CC_SHA512_CTX ctx;
 	CC_SHA512_Init(&ctx);
 	CC_SHA512_Update(&ctx,data,len);
 	CC_SHA512_Final(reinterpret_cast<unsigned char *>(digest),&ctx);
 }
+
+void SHA384(void *digest,const void *data,unsigned int len)
+{
+	CC_SHA512_CTX ctx;
+	CC_SHA384_Init(&ctx);
+	CC_SHA384_Update(&ctx,data,len);
+	CC_SHA384_Final(reinterpret_cast<unsigned char *>(digest),&ctx);
+}
+
 }
 #endif
 
@@ -32,327 +44,221 @@ void SHA512::hash(void *digest,const void *data,unsigned int len)
 #include <openssl/sha.h>
 #define ZT_HAVE_NATIVE_SHA512
 namespace ZeroTier {
-void SHA512::hash(void *digest,const void *data,unsigned int len)
+
+void SHA512(void *digest,const void *data,unsigned int len)
 {
 	SHA512_CTX ctx;
 	SHA512_Init(&ctx);
 	SHA512_Update(&ctx,data,len);
 	SHA512_Final(reinterpret_cast<unsigned char *>(digest),&ctx);
 }
+
+void SHA384(void *digest,const void *data,unsigned int len)
+{
+	SHA512_CTX ctx;
+	SHA384_Init(&ctx);
+	SHA384_Update(&ctx,data,len);
+	SHA384_Final(reinterpret_cast<unsigned char *>(digest),&ctx);
+}
+
 }
 #endif
 
+#endif
+
 #ifndef ZT_HAVE_NATIVE_SHA512
 
 namespace ZeroTier {
 
-#define uint64 uint64_t
+namespace {
 
-#ifdef ZT_NO_TYPE_PUNNING
+static inline void sha512_encode(uint64_t input, uint8_t *output, uint32_t idx)
+{
+	output[idx + 0] = (uint8_t)(input >> 56);
+	output[idx + 1] = (uint8_t)(input >> 48);
+	output[idx + 2] = (uint8_t)(input >> 40);
+	output[idx + 3] = (uint8_t)(input >> 32);
+	output[idx + 4] = (uint8_t)(input >> 24);
+	output[idx + 5] = (uint8_t)(input >> 16);
+	output[idx + 6] = (uint8_t)(input >>  8);
+	output[idx + 7] = (uint8_t)(input >>  0);
+}
+static inline void sha512_decode(uint64_t *output, uint8_t *input, uint32_t idx)
+{
+	*output = ((uint64_t)input[idx + 0] << 56)
+		| ((uint64_t)input[idx + 1] << 48)
+		| ((uint64_t)input[idx + 2] << 40)
+		| ((uint64_t)input[idx + 3] << 32)
+		| ((uint64_t)input[idx + 4] << 24)
+		| ((uint64_t)input[idx + 5] << 16)
+		| ((uint64_t)input[idx + 6] <<  8)
+		| ((uint64_t)input[idx + 7] <<  0);
+}
+
+typedef struct sha512_ctx_tag {
+	uint32_t is_sha384;
+	uint8_t block[128];
+	uint64_t len[2];
+	uint64_t val[8];
+	uint8_t *payload_addr;
+	uint64_t payload_len;
+} sha512_ctx_t;
+
+#define LSR(x,n) (x >> n)
+#define ROR(x,n) (LSR(x,n) | (x << (64 - n)))
+
+#define MA(x,y,z) ((x & y) | (z & (x | y)))
+#define CH(x,y,z) (z ^ (x & (y ^ z)))
+#define GAMMA0(x) (ROR(x, 1) ^ ROR(x, 8) ^  LSR(x, 7))
+#define GAMMA1(x) (ROR(x,19) ^ ROR(x,61) ^  LSR(x, 6))
+#define SIGMA0(x) (ROR(x,28) ^ ROR(x,34) ^ ROR(x,39))
+#define SIGMA1(x) (ROR(x,14) ^ ROR(x,18) ^ ROR(x,41))
+
+#define INIT_COMPRESSOR() uint64_t tmp0 = 0, tmp1 = 0
+#define COMPRESS( a,  b,  c, d,  e,  f,  g,  h, x,  k)   \
+    tmp0 = h + SIGMA1(e) + CH(e,f,g) + k + x;              \
+    tmp1 = SIGMA0(a) + MA(a,b,c); d += tmp0; h = tmp0 + tmp1;
+
+static const uint8_t sha512_padding[128] = { 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
+
+static const uint64_t K[80] = {
+	0x428A2F98D728AE22ULL,  0x7137449123EF65CDULL, 0xB5C0FBCFEC4D3B2FULL,  0xE9B5DBA58189DBBCULL,
+	0x3956C25BF348B538ULL,  0x59F111F1B605D019ULL, 0x923F82A4AF194F9BULL,  0xAB1C5ED5DA6D8118ULL,
+	0xD807AA98A3030242ULL,  0x12835B0145706FBEULL, 0x243185BE4EE4B28CULL,  0x550C7DC3D5FFB4E2ULL,
+	0x72BE5D74F27B896FULL,  0x80DEB1FE3B1696B1ULL, 0x9BDC06A725C71235ULL,  0xC19BF174CF692694ULL,
+	0xE49B69C19EF14AD2ULL,  0xEFBE4786384F25E3ULL, 0x0FC19DC68B8CD5B5ULL,  0x240CA1CC77AC9C65ULL,
+	0x2DE92C6F592B0275ULL,  0x4A7484AA6EA6E483ULL, 0x5CB0A9DCBD41FBD4ULL,  0x76F988DA831153B5ULL,
+	0x983E5152EE66DFABULL,  0xA831C66D2DB43210ULL, 0xB00327C898FB213FULL,  0xBF597FC7BEEF0EE4ULL,
+	0xC6E00BF33DA88FC2ULL,  0xD5A79147930AA725ULL, 0x06CA6351E003826FULL,  0x142929670A0E6E70ULL,
+	0x27B70A8546D22FFCULL,  0x2E1B21385C26C926ULL, 0x4D2C6DFC5AC42AEDULL,  0x53380D139D95B3DFULL,
+	0x650A73548BAF63DEULL,  0x766A0ABB3C77B2A8ULL, 0x81C2C92E47EDAEE6ULL,  0x92722C851482353BULL,
+	0xA2BFE8A14CF10364ULL,  0xA81A664BBC423001ULL, 0xC24B8B70D0F89791ULL,  0xC76C51A30654BE30ULL,
+	0xD192E819D6EF5218ULL,  0xD69906245565A910ULL, 0xF40E35855771202AULL,  0x106AA07032BBD1B8ULL,
+	0x19A4C116B8D2D0C8ULL,  0x1E376C085141AB53ULL, 0x2748774CDF8EEB99ULL,  0x34B0BCB5E19B48A8ULL,
+	0x391C0CB3C5C95A63ULL,  0x4ED8AA4AE3418ACBULL, 0x5B9CCA4F7763E373ULL,  0x682E6FF3D6B2B8A3ULL,
+	0x748F82EE5DEFB2FCULL,  0x78A5636F43172F60ULL, 0x84C87814A1F0AB72ULL,  0x8CC702081A6439ECULL,
+	0x90BEFFFA23631E28ULL,  0xA4506CEBDE82BDE9ULL, 0xBEF9A3F7B2C67915ULL,  0xC67178F2E372532BULL,
+	0xCA273ECEEA26619CULL,  0xD186B8C721C0C207ULL, 0xEADA7DD6CDE0EB1EULL,  0xF57D4F7FEE6ED178ULL,
+	0x06F067AA72176FBAULL,  0x0A637DC5A2C898A6ULL, 0x113F9804BEF90DAEULL,  0x1B710B35131C471BULL,
+	0x28DB77F523047D84ULL,  0x32CAAB7B40C72493ULL, 0x3C9EBE0A15C9BEBCULL,  0x431D67C49C100D4CULL,
+	0x4CC5D4BECB3E42B6ULL,  0x597F299CFC657E2AULL, 0x5FCB6FAB3AD6FAECULL,  0x6C44198C4A475817ULL
+};
 
-static uint64 load_bigendian(const unsigned char *x)
+static inline void sha512_memcpy(uint8_t *src, uint8_t *dst, uint32_t size)
+{
+	uint32_t i = 0;
+	for (;i < size;i++) { *dst++ = *src++; }
+}
+static inline void sha512_memclr(uint8_t *dst, uint32_t size)
 {
-	return
-			(uint64) (x[7]) \
-	| (((uint64) (x[6])) << 8) \
-	| (((uint64) (x[5])) << 16) \
-	| (((uint64) (x[4])) << 24) \
-	| (((uint64) (x[3])) << 32) \
-	| (((uint64) (x[2])) << 40) \
-	| (((uint64) (x[1])) << 48) \
-	| (((uint64) (x[0])) << 56)
-	;
+	uint32_t i = 0;
+	for (;i < size;i++) { *dst++ = 0; }
 }
 
-static void store_bigendian(unsigned char *x,uint64 u)
+static inline void sha512_init_512(sha512_ctx_t *sha512_ctx, uint8_t *payload_addr, uint64_t payload_len)
 {
-	x[7] = u; u >>= 8;
-	x[6] = u; u >>= 8;
-	x[5] = u; u >>= 8;
-	x[4] = u; u >>= 8;
-	x[3] = u; u >>= 8;
-	x[2] = u; u >>= 8;
-	x[1] = u; u >>= 8;
-	x[0] = u;
+	sha512_memclr((uint8_t *)sha512_ctx,sizeof(sha512_ctx_t));
+	sha512_ctx->val[0] = 0x6A09E667F3BCC908ULL;
+	sha512_ctx->val[1] = 0xBB67AE8584CAA73BULL;
+	sha512_ctx->val[2] = 0x3C6EF372FE94F82BULL;
+	sha512_ctx->val[3] = 0xA54FF53A5F1D36F1ULL;
+	sha512_ctx->val[4] = 0x510E527FADE682D1ULL;
+	sha512_ctx->val[5] = 0x9B05688C2B3E6C1FULL;
+	sha512_ctx->val[6] = 0x1F83D9ABFB41BD6BULL;
+	sha512_ctx->val[7] = 0x5BE0CD19137E2179ULL;
+	sha512_ctx->is_sha384 = 0;
+	sha512_ctx->payload_addr = payload_addr;
+	sha512_ctx->payload_len = (uint64_t)payload_len;
+	sha512_ctx->len[0] = payload_len << 3;
+	sha512_ctx->len[1] = payload_len >> 61;
 }
 
-#else // !ZT_NO_TYPE_PUNNING
-
-#define load_bigendian(x) Utils::ntoh(*((const uint64_t *)(x)))
-#define store_bigendian(x,u) (*((uint64_t *)(x)) = Utils::hton((u)))
-
-#endif // ZT_NO_TYPE_PUNNING
-
-#define SHR(x,c) ((x) >> (c))
-#define ROTR(x,c) (((x) >> (c)) | ((x) << (64 - (c))))
-
-#define Ch(x,y,z) ((x & y) ^ (~x & z))
-#define Maj(x,y,z) ((x & y) ^ (x & z) ^ (y & z))
-#define Sigma0(x) (ROTR(x,28) ^ ROTR(x,34) ^ ROTR(x,39))
-#define Sigma1(x) (ROTR(x,14) ^ ROTR(x,18) ^ ROTR(x,41))
-#define sigma0(x) (ROTR(x, 1) ^ ROTR(x, 8) ^ SHR(x,7))
-#define sigma1(x) (ROTR(x,19) ^ ROTR(x,61) ^ SHR(x,6))
-
-#define M(w0,w14,w9,w1) w0 = sigma1(w14) + w9 + sigma0(w1) + w0;
-
-#define EXPAND \
-	M(w0 ,w14,w9 ,w1 ) \
-	M(w1 ,w15,w10,w2 ) \
-	M(w2 ,w0 ,w11,w3 ) \
-	M(w3 ,w1 ,w12,w4 ) \
-	M(w4 ,w2 ,w13,w5 ) \
-	M(w5 ,w3 ,w14,w6 ) \
-	M(w6 ,w4 ,w15,w7 ) \
-	M(w7 ,w5 ,w0 ,w8 ) \
-	M(w8 ,w6 ,w1 ,w9 ) \
-	M(w9 ,w7 ,w2 ,w10) \
-	M(w10,w8 ,w3 ,w11) \
-	M(w11,w9 ,w4 ,w12) \
-	M(w12,w10,w5 ,w13) \
-	M(w13,w11,w6 ,w14) \
-	M(w14,w12,w7 ,w15) \
-	M(w15,w13,w8 ,w0 )
-
-#define F(w,k) \
-	T1 = h + Sigma1(e) + Ch(e,f,g) + k + w; \
-	T2 = Sigma0(a) + Maj(a,b,c); \
-	h = g; \
-	g = f; \
-	f = e; \
-	e = d + T1; \
-	d = c; \
-	c = b; \
-	b = a; \
-	a = T1 + T2;
-
-static inline int crypto_hashblocks(unsigned char *statebytes,const unsigned char *in,unsigned long long inlen)
+static inline void sha512_init_384(sha512_ctx_t *sha512_ctx, uint8_t *payload_addr, uint64_t payload_len)
 {
-	uint64 state[8];
-	uint64 a;
-	uint64 b;
-	uint64 c;
-	uint64 d;
-	uint64 e;
-	uint64 f;
-	uint64 g;
-	uint64 h;
-	uint64 T1;
-	uint64 T2;
-
-	a = load_bigendian(statebytes +  0); state[0] = a;
-	b = load_bigendian(statebytes +  8); state[1] = b;
-	c = load_bigendian(statebytes + 16); state[2] = c;
-	d = load_bigendian(statebytes + 24); state[3] = d;
-	e = load_bigendian(statebytes + 32); state[4] = e;
-	f = load_bigendian(statebytes + 40); state[5] = f;
-	g = load_bigendian(statebytes + 48); state[6] = g;
-	h = load_bigendian(statebytes + 56); state[7] = h;
-
-	while (inlen >= 128) {
-		uint64 w0  = load_bigendian(in +   0);
-		uint64 w1  = load_bigendian(in +   8);
-		uint64 w2  = load_bigendian(in +  16);
-		uint64 w3  = load_bigendian(in +  24);
-		uint64 w4  = load_bigendian(in +  32);
-		uint64 w5  = load_bigendian(in +  40);
-		uint64 w6  = load_bigendian(in +  48);
-		uint64 w7  = load_bigendian(in +  56);
-		uint64 w8  = load_bigendian(in +  64);
-		uint64 w9  = load_bigendian(in +  72);
-		uint64 w10 = load_bigendian(in +  80);
-		uint64 w11 = load_bigendian(in +  88);
-		uint64 w12 = load_bigendian(in +  96);
-		uint64 w13 = load_bigendian(in + 104);
-		uint64 w14 = load_bigendian(in + 112);
-		uint64 w15 = load_bigendian(in + 120);
-
-		F(w0 ,0x428a2f98d728ae22ULL)
-		F(w1 ,0x7137449123ef65cdULL)
-		F(w2 ,0xb5c0fbcfec4d3b2fULL)
-		F(w3 ,0xe9b5dba58189dbbcULL)
-		F(w4 ,0x3956c25bf348b538ULL)
-		F(w5 ,0x59f111f1b605d019ULL)
-		F(w6 ,0x923f82a4af194f9bULL)
-		F(w7 ,0xab1c5ed5da6d8118ULL)
-		F(w8 ,0xd807aa98a3030242ULL)
-		F(w9 ,0x12835b0145706fbeULL)
-		F(w10,0x243185be4ee4b28cULL)
-		F(w11,0x550c7dc3d5ffb4e2ULL)
-		F(w12,0x72be5d74f27b896fULL)
-		F(w13,0x80deb1fe3b1696b1ULL)
-		F(w14,0x9bdc06a725c71235ULL)
-		F(w15,0xc19bf174cf692694ULL)
-
-		EXPAND
-
-		F(w0 ,0xe49b69c19ef14ad2ULL)
-		F(w1 ,0xefbe4786384f25e3ULL)
-		F(w2 ,0x0fc19dc68b8cd5b5ULL)
-		F(w3 ,0x240ca1cc77ac9c65ULL)
-		F(w4 ,0x2de92c6f592b0275ULL)
-		F(w5 ,0x4a7484aa6ea6e483ULL)
-		F(w6 ,0x5cb0a9dcbd41fbd4ULL)
-		F(w7 ,0x76f988da831153b5ULL)
-		F(w8 ,0x983e5152ee66dfabULL)
-		F(w9 ,0xa831c66d2db43210ULL)
-		F(w10,0xb00327c898fb213fULL)
-		F(w11,0xbf597fc7beef0ee4ULL)
-		F(w12,0xc6e00bf33da88fc2ULL)
-		F(w13,0xd5a79147930aa725ULL)
-		F(w14,0x06ca6351e003826fULL)
-		F(w15,0x142929670a0e6e70ULL)
-
-		EXPAND
-
-		F(w0 ,0x27b70a8546d22ffcULL)
-		F(w1 ,0x2e1b21385c26c926ULL)
-		F(w2 ,0x4d2c6dfc5ac42aedULL)
-		F(w3 ,0x53380d139d95b3dfULL)
-		F(w4 ,0x650a73548baf63deULL)
-		F(w5 ,0x766a0abb3c77b2a8ULL)
-		F(w6 ,0x81c2c92e47edaee6ULL)
-		F(w7 ,0x92722c851482353bULL)
-		F(w8 ,0xa2bfe8a14cf10364ULL)
-		F(w9 ,0xa81a664bbc423001ULL)
-		F(w10,0xc24b8b70d0f89791ULL)
-		F(w11,0xc76c51a30654be30ULL)
-		F(w12,0xd192e819d6ef5218ULL)
-		F(w13,0xd69906245565a910ULL)
-		F(w14,0xf40e35855771202aULL)
-		F(w15,0x106aa07032bbd1b8ULL)
-
-		EXPAND
-
-		F(w0 ,0x19a4c116b8d2d0c8ULL)
-		F(w1 ,0x1e376c085141ab53ULL)
-		F(w2 ,0x2748774cdf8eeb99ULL)
-		F(w3 ,0x34b0bcb5e19b48a8ULL)
-		F(w4 ,0x391c0cb3c5c95a63ULL)
-		F(w5 ,0x4ed8aa4ae3418acbULL)
-		F(w6 ,0x5b9cca4f7763e373ULL)
-		F(w7 ,0x682e6ff3d6b2b8a3ULL)
-		F(w8 ,0x748f82ee5defb2fcULL)
-		F(w9 ,0x78a5636f43172f60ULL)
-		F(w10,0x84c87814a1f0ab72ULL)
-		F(w11,0x8cc702081a6439ecULL)
-		F(w12,0x90befffa23631e28ULL)
-		F(w13,0xa4506cebde82bde9ULL)
-		F(w14,0xbef9a3f7b2c67915ULL)
-		F(w15,0xc67178f2e372532bULL)
-
-		EXPAND
-
-		F(w0 ,0xca273eceea26619cULL)
-		F(w1 ,0xd186b8c721c0c207ULL)
-		F(w2 ,0xeada7dd6cde0eb1eULL)
-		F(w3 ,0xf57d4f7fee6ed178ULL)
-		F(w4 ,0x06f067aa72176fbaULL)
-		F(w5 ,0x0a637dc5a2c898a6ULL)
-		F(w6 ,0x113f9804bef90daeULL)
-		F(w7 ,0x1b710b35131c471bULL)
-		F(w8 ,0x28db77f523047d84ULL)
-		F(w9 ,0x32caab7b40c72493ULL)
-		F(w10,0x3c9ebe0a15c9bebcULL)
-		F(w11,0x431d67c49c100d4cULL)
-		F(w12,0x4cc5d4becb3e42b6ULL)
-		F(w13,0x597f299cfc657e2aULL)
-		F(w14,0x5fcb6fab3ad6faecULL)
-		F(w15,0x6c44198c4a475817ULL)
-
-		a += state[0];
-		b += state[1];
-		c += state[2];
-		d += state[3];
-		e += state[4];
-		f += state[5];
-		g += state[6];
-		h += state[7];
-
-		state[0] = a;
-		state[1] = b;
-		state[2] = c;
-		state[3] = d;
-		state[4] = e;
-		state[5] = f;
-		state[6] = g;
-		state[7] = h;
-
-		in += 128;
-		inlen -= 128;
+	sha512_memclr((uint8_t *)sha512_ctx,sizeof(sha512_ctx_t));
+	sha512_ctx->val[0] = 0xCBBB9D5DC1059ED8ULL;
+	sha512_ctx->val[1] = 0x629A292A367CD507ULL;
+	sha512_ctx->val[2] = 0x9159015A3070DD17ULL;
+	sha512_ctx->val[3] = 0x152FECD8F70E5939ULL;
+	sha512_ctx->val[4] = 0x67332667FFC00B31ULL;
+	sha512_ctx->val[5] = 0x8EB44A8768581511ULL;
+	sha512_ctx->val[6] = 0xDB0C2E0D64F98FA7ULL;
+	sha512_ctx->val[7] = 0x47B5481DBEFA4FA4ULL;
+	sha512_ctx->is_sha384 = 1;
+	sha512_ctx->payload_addr = payload_addr;
+	sha512_ctx->payload_len = (uint64_t)payload_len;
+	sha512_ctx->len[0] = payload_len << 3;
+	sha512_ctx->len[1] = payload_len >> 61;
+}
+
+static inline void sha512_hash_factory(sha512_ctx_t *ctx, uint8_t data[128])
+{
+	uint32_t i = 0;
+	uint64_t W[80];
+	uint64_t v[8];
+	INIT_COMPRESSOR();
+	for(i = 0; i < 16; i++) { sha512_decode(&W[i], data, i << 3 ); }
+	for(; i < 80; i++) { W[i] = GAMMA1(W[i -  2]) + W[i -  7] + GAMMA0(W[i - 15]) + W[i - 16]; }
+	for (i = 0;i < 8; i++) { v[i] = ctx->val[i]; }
+	for(i = 0; i < 80;) {
+		COMPRESS(v[0], v[1], v[2], v[3], v[4], v[5], v[6], v[7], W[i], K[i] ); i++;
+		COMPRESS(v[7], v[0], v[1], v[2], v[3], v[4], v[5], v[6], W[i], K[i] ); i++;
+		COMPRESS(v[6], v[7], v[0], v[1], v[2], v[3], v[4], v[5], W[i], K[i] ); i++;
+		COMPRESS(v[5], v[6], v[7], v[0], v[1], v[2], v[3], v[4], W[i], K[i] ); i++;
+		COMPRESS(v[4], v[5], v[6], v[7], v[0], v[1], v[2], v[3], W[i], K[i] ); i++;
+		COMPRESS(v[3], v[4], v[5], v[6], v[7], v[0], v[1], v[2], W[i], K[i] ); i++;
+		COMPRESS(v[2], v[3], v[4], v[5], v[6], v[7], v[0], v[1], W[i], K[i] ); i++;
+		COMPRESS(v[1], v[2], v[3], v[4], v[5], v[6], v[7], v[0], W[i], K[i] ); i++;
 	}
+	for (i = 0; i < 8; i++) { ctx->val[i] += v[i]; }
+}
 
-	store_bigendian(statebytes +  0,state[0]);
-	store_bigendian(statebytes +  8,state[1]);
-	store_bigendian(statebytes + 16,state[2]);
-	store_bigendian(statebytes + 24,state[3]);
-	store_bigendian(statebytes + 32,state[4]);
-	store_bigendian(statebytes + 40,state[5]);
-	store_bigendian(statebytes + 48,state[6]);
-	store_bigendian(statebytes + 56,state[7]);
+static inline void sha512_stage1(sha512_ctx_t *sha512_ctx)
+{
+	while (sha512_ctx->payload_len >= 128) {
+		sha512_hash_factory(sha512_ctx, sha512_ctx->payload_addr);
+		sha512_ctx->payload_addr += 128;
+		sha512_ctx->payload_len -= 128;
+	}
+}
 
-	return 0;
+static inline void sha512_stage2(sha512_ctx_t *sha512_ctx, uint8_t output[64])
+{
+	uint32_t block_pos = sha512_ctx->payload_len;
+	uint32_t padding_bytes = 0;
+	uint8_t temp_data[128] = {0};
+	uint8_t *temp_data_p = (uint8_t *)&temp_data[0];
+	uint8_t len_be[16] = {0};
+	uint8_t i = 0;
+	sha512_memcpy(sha512_ctx->payload_addr, temp_data_p, sha512_ctx->payload_len);
+	padding_bytes = 112 - block_pos;
+	temp_data_p += block_pos;
+	sha512_memcpy((uint8_t *)sha512_padding, temp_data_p, padding_bytes);
+	temp_data_p += padding_bytes;
+	sha512_encode(sha512_ctx->len[1], len_be, 0);
+	sha512_encode(sha512_ctx->len[0], len_be, 8);
+	sha512_memcpy(len_be, temp_data_p, 16);
+	sha512_hash_factory(sha512_ctx, temp_data);
+	for (i = 0; i < 6; i++) { sha512_encode(sha512_ctx->val[i], output, i * 8); }
+	for ( ;(i < 8) && (sha512_ctx->is_sha384 == 0); i++) { sha512_encode(sha512_ctx->val[i], output, i * 8); }
 }
 
-#define blocks crypto_hashblocks
-
-static const unsigned char iv[64] = {
-	0x6a,0x09,0xe6,0x67,0xf3,0xbc,0xc9,0x08,
-	0xbb,0x67,0xae,0x85,0x84,0xca,0xa7,0x3b,
-	0x3c,0x6e,0xf3,0x72,0xfe,0x94,0xf8,0x2b,
-	0xa5,0x4f,0xf5,0x3a,0x5f,0x1d,0x36,0xf1,
-	0x51,0x0e,0x52,0x7f,0xad,0xe6,0x82,0xd1,
-	0x9b,0x05,0x68,0x8c,0x2b,0x3e,0x6c,0x1f,
-	0x1f,0x83,0xd9,0xab,0xfb,0x41,0xbd,0x6b,
-	0x5b,0xe0,0xcd,0x19,0x13,0x7e,0x21,0x79
-};
+} // anonymous namespace
 
-void SHA512::hash(void *digest,const void *data,unsigned int len)
+void SHA512(void *digest,const void *data,unsigned int len)
 {
-	unsigned char h[64];
-	unsigned char padded[256];
-	int i;
-	uint64_t bytes = len;
-
-	const unsigned char *in = (const unsigned char *)data;
-	unsigned int inlen = len;
-
-	for (i = 0;i < 64;++i) h[i] = iv[i];
-
-	blocks(h,in,inlen);
-	in += inlen;
-	inlen &= 127;
-	in -= inlen;
-
-	for (i = 0;i < (int)inlen;++i) padded[i] = in[i];
-	padded[inlen] = 0x80;
-
-	if (inlen < 112) {
-		for (i = inlen + 1;i < 119;++i) padded[i] = 0;
-		padded[119] = (unsigned char)((bytes >> 61) & 0xff);
-		padded[120] = (unsigned char)((bytes >> 53) & 0xff);
-		padded[121] = (unsigned char)((bytes >> 45) & 0xff);
-		padded[122] = (unsigned char)((bytes >> 37) & 0xff);
-		padded[123] = (unsigned char)((bytes >> 29) & 0xff);
-		padded[124] = (unsigned char)((bytes >> 21) & 0xff);
-		padded[125] = (unsigned char)((bytes >> 13) & 0xff);
-		padded[126] = (unsigned char)((bytes >> 5) & 0xff);
-		padded[127] = (unsigned char)((bytes << 3) & 0xff);
-		blocks(h,padded,128);
-	} else {
-		for (i = inlen + 1;i < 247;++i) padded[i] = 0;
-		padded[247] = (unsigned char)((bytes >> 61) & 0xff);
-		padded[248] = (unsigned char)((bytes >> 53) & 0xff);
-		padded[249] = (unsigned char)((bytes >> 45) & 0xff);
-		padded[250] = (unsigned char)((bytes >> 37) & 0xff);
-		padded[251] = (unsigned char)((bytes >> 29) & 0xff);
-		padded[252] = (unsigned char)((bytes >> 21) & 0xff);
-		padded[253] = (unsigned char)((bytes >> 13) & 0xff);
-		padded[254] = (unsigned char)((bytes >> 5) & 0xff);
-		padded[255] = (unsigned char)((bytes << 3) & 0xff);
-		blocks(h,padded,256);
-	}
+	sha512_ctx_t h;
+	sha512_init_512(&h,(uint8_t *)data,len);
+	sha512_stage1(&h);
+	sha512_stage2(&h,(uint8_t *)digest);
+}
 
-	for (i = 0;i < 64;++i) ((unsigned char *)digest)[i] = h[i];
+void SHA384(void *digest,const void *data,unsigned int len)
+{
+	sha512_ctx_t h;
+	sha512_init_384(&h,(uint8_t *)data,len);
+	sha512_stage1(&h);
+	sha512_stage2(&h,(uint8_t *)digest);
 }
 
 } // namespace ZeroTier
@@ -363,5 +269,5 @@ void SHA512::hash(void *digest,const void *data,unsigned int len)
 // This eliminates the need to link against a third party SHA512() from this code
 extern "C" void ZT_sha512internal(void *digest,const void *data,unsigned int len)
 {
-	ZeroTier::SHA512::hash(digest,data,len);
+	ZeroTier::SHA512(digest,data,len);
 }

node/SHA512.hpp

@@ -31,14 +31,9 @@
 
 namespace ZeroTier {
 
-/**
- * SHA-512 digest algorithm
- */
-class SHA512
-{
-public:
-	static void hash(void *digest,const void *data,unsigned int len);
-};
+void SHA512(void *digest,const void *data,unsigned int len);
+
+void SHA384(void *digest,const void *data,unsigned int len);
 
 } // namespace ZeroTier
 

node/Utils.hpp

@@ -242,8 +242,8 @@ public:
 	 */
 	static void getSecureRandom(void *buf,unsigned int bytes);
 
-	static int Utils::b32d(const char *encoded, uint8_t *result, int bufSize);
-	static int Utils::b32e(const uint8_t *data,int length,char *result,int bufSize);
+	static int b32d(const char *encoded, uint8_t *result, int bufSize);
+	static int b32e(const uint8_t *data,int length,char *result,int bufSize);
 
 	/**
 	 * Tokenize a string (alias for strtok_r or strtok_s depending on platform)

selftest.cpp

@@ -105,6 +105,7 @@ static const unsigned char poly1305TV1Tag[16] = { 0xa6,0xf7,0x45,0x00,0x8f,0x81,
 
 static const char *sha512TV0Input = "supercalifragilisticexpealidocious";
 static const unsigned char sha512TV0Digest[64] = { 0x18,0x2a,0x85,0x59,0x69,0xe5,0xd3,0xe6,0xcb,0xf6,0x05,0x24,0xad,0xf2,0x88,0xd1,0xbb,0xf2,0x52,0x92,0x81,0x24,0x31,0xf6,0xd2,0x52,0xf1,0xdb,0xc1,0xcb,0x44,0xdf,0x21,0x57,0x3d,0xe1,0xb0,0x6b,0x68,0x75,0x95,0x9f,0x3b,0x6f,0x87,0xb1,0x13,0x81,0xd0,0xbc,0x79,0x2c,0x43,0x3a,0x13,0x55,0x3c,0xe0,0x84,0xc2,0x92,0x55,0x31,0x1c };
+static const unsigned char sha384TV0Digest[48] = { 0x71,0xe7,0x71,0x79,0xae,0xc3,0xf3,0x5f,0x93,0xea,0xe2,0x1d,0xe3,0x3f,0x24,0x6d,0xed,0x2a,0x59,0xae,0x22,0x45,0x27,0x6c,0x12,0x57,0xf3,0xbe,0xe6,0xce,0xe2,0x73,0xd8,0xad,0xaa,0x9b,0x99,0xa4,0x8a,0x1b,0x7a,0xb9,0x5d,0xfb,0x9c,0x1a,0x1c,0xf6 };
 
 struct C25519TestVector
 {
@@ -220,7 +221,7 @@ static int testCrypto()
 			bytes += 1234567.0;
 		}
 		uint64_t end = OSUtils::now();
-		SHA512::hash(buf1,bb,1234567);
+		SHA512(buf1,bb,1234567);
 		std::cout << ((bytes / 1048576.0) / ((long double)(end - start) / 1024.0)) << " MiB/second (" << Utils::hex(buf1,16,hexbuf) << ')' << std::endl;
 		::free((void *)bb);
 	}
@@ -272,18 +273,25 @@ static int testCrypto()
 			bytes += 1234567.0;
 		}
 		uint64_t end = OSUtils::now();
-		SHA512::hash(buf1,bb,1234567);
+		SHA512(buf1,bb,1234567);
 		std::cout << ((bytes / 1048576.0) / ((long double)(end - start) / 1024.0)) << " MiB/second (" << Utils::hex(buf1,16,hexbuf) << ')' << std::endl;
 		::free((void *)bb);
 	}
 
 	std::cout << "[crypto] Testing SHA-512... "; std::cout.flush();
-	SHA512::hash(buf1,sha512TV0Input,(unsigned int)strlen(sha512TV0Input));
+	SHA512(buf1,sha512TV0Input,(unsigned int)strlen(sha512TV0Input));
 	if (memcmp(buf1,sha512TV0Digest,64)) {
 		std::cout << "FAIL" << std::endl;
 		return -1;
 	}
 	std::cout << "PASS" << std::endl;
+	std::cout << "[crypto] Testing SHA-384... "; std::cout.flush();
+	SHA384(buf1,sha512TV0Input,(unsigned int)strlen(sha512TV0Input));
+	if (memcmp(buf1,sha384TV0Digest,48)) {
+		std::cout << "FAIL" << std::endl;
+		return -1;
+	}
+	std::cout << "PASS" << std::endl;
 
 	std::cout << "[crypto] Testing Poly1305... "; std::cout.flush();
 	Poly1305::compute(buf1,poly1305TV0Input,sizeof(poly1305TV0Input),poly1305TV0Key);

service/SoftwareUpdater.cpp

@@ -127,7 +127,7 @@ void SoftwareUpdater::setUpdateDistribution(bool distribute)
 						const std::string metaHash(OSUtils::jsonBinFromHex(d.meta[ZT_SOFTWARE_UPDATE_JSON_UPDATE_HASH]));
 						if ((metaHash.length() == ZT_SHA512_DIGEST_LEN)&&(OSUtils::readFile(binPath.c_str(),d.bin))) {
 							std::array<uint8_t,ZT_SHA512_DIGEST_LEN> sha512;
-							SHA512::hash(sha512.data(),d.bin.data(),(unsigned int)d.bin.length());
+							SHA512(sha512.data(),d.bin.data(),(unsigned int)d.bin.length());
 							if (!memcmp(sha512.data(),metaHash.data(),ZT_SHA512_DIGEST_LEN)) { // double check that hash in JSON is correct
 								d.meta[ZT_SOFTWARE_UPDATE_JSON_UPDATE_SIZE] = d.bin.length(); // override with correct value -- setting this in meta json is optional
 								std::array<uint8_t,16> shakey;
@@ -347,7 +347,7 @@ bool SoftwareUpdater::check(const int64_t now)
 			try {
 				// (1) Check the hash itself to make sure the image is basically okay
 				uint8_t sha512[ZT_SHA512_DIGEST_LEN];
-				SHA512::hash(sha512,_download.data(),(unsigned int)_download.length());
+				SHA512(sha512,_download.data(),(unsigned int)_download.length());
 				char hexbuf[(ZT_SHA512_DIGEST_LEN * 2) + 2];
 				if (OSUtils::jsonString(_latestMeta[ZT_SOFTWARE_UPDATE_JSON_UPDATE_HASH],"") == Utils::hex(sha512,ZT_SHA512_DIGEST_LEN,hexbuf)) {
 					// (2) Check signature by signing authority