DragonX/hush3
1
1
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases 1 Wiki Activity

Use my curve25519 and sha256

Browse Source
This commit is contained in:
jl777
2018-07-29 22:10:31 -11:00
parent f41b35abe4
commit d176d2df4f
2 changed files with 23 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
src/cc/dice.cpp
View File

@@ -26,25 +26,25 @@
2. and 3. can be done in mempool
*/
void vcalc_sha256(char deprecated[(256 >> 3) * 2 + 1],uint8_t hash[256 >> 3],uint8_t *src,int32_t len);
void ed25519_create_keypair(uint8_t *,uint8_t *,uint8_t *);
void ed25519_key_exchange(uint8_t *,uint8_t *,uint8_t *);
uint256 DiceHashEntropy(uint256 &entropy,uint256 txidseed) // assumes little endian CPU and max 1 vout per txid used
uint256 DiceHashEntropy(uint256 &entropy,uint256 txidpriv) // assumes little endian CPU and max 1 vout per txid used
{
int32_t i; uint8_t tmp256[32],tmpseed[32],txidpub[32],txidpriv[32],mypriv[32],mypub[32],myseed[32],ssecret[32],ssecret2[32]; uint256 hentropy;
int32_t i; bits256 tmp256,txidpub,mypriv,mypub,ssecret,ssecret2; uint256 hentropy;
memset(&hentropy,0,32);
ed25519_create_keypair(txidpub,txidpriv,(uint8_t *)&txidseed);
Myprivkey(tmp256);
vcalc_sha256(0,tmpseed,tmp256,32);
ed25519_create_keypair(mypub,mypriv,tmpseed);
ed25519_key_exchange(ssecret,txidpub,mypriv);
ed25519_key_exchange(ssecret2,mypub,txidpriv);
if ( memcmp(ssecret,ssecret2,32) == 0 )
txidpriv.bytes[0] &= 0xf8, txidpriv.bytes[31] &= 0x7f, txidpriv.bytes[31] |= 0x40;
txidpub = curve25519(txidpriv,curve25519_basepoint9());
Myprivkey(tmp256.bytes);
vcalc_sha256(0,mypriv.bytes,tmp256.bytes,32);
mypriv.bytes[0] &= 0xf8, mypriv.bytes[31] &= 0x7f, mypriv.bytes[31] |= 0x40;
mypub = curve25519(mypriv,curve25519_basepoint9());
ssecret = curve25519_shared(txidpub,mypriv);
ssecret2 = curve25519_shared(mypub,txidpriv);
if ( memcmp(ssecret.bytes,ssecret2.bytes,32) == 0 )
{
vcalc_sha256(0,(uint8_t *)&entropy,ssecret,32);
vcalc_sha256(0,(uint8_t *)&entropy,ssecret.bytes,32);
vcalc_sha256(0,(uint8_t *)&hentropy,(uint8_t *)&entropy,32);
}
} else fprintf(stderr,"shared secrets dont match\n");
return(hentropy);
}