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Seed based dilithium key generation

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This commit is contained in:
jl777
2019-02-23 04:56:59 -11:00
parent 145d05a625
commit 69a890fe53
2 changed files with 22 additions and 6 deletions
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2
src/cc/cclib.cpp
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@@ -81,7 +81,7 @@ CClib_methods[] =
{ (char *)"musig", (char *)"verify", (char *)"msg sig pubkey", 3, 3, 'V', EVAL_MUSIG },
{ (char *)"musig", (char *)"send", (char *)"combined_pk amount", 2, 2, 'x', EVAL_MUSIG },
{ (char *)"musig", (char *)"spend", (char *)"sendtxid sig destpubkey", 3, 3, 'y', EVAL_MUSIG },
{ (char *)"dilithium", (char *)"keypair", (char *)"<no args>", 0, 0, 'K', EVAL_DILITHIUM },
{ (char *)"dilithium", (char *)"keypair", (char *)"[hexseed]", 0, 1, 'K', EVAL_DILITHIUM },
{ (char *)"dilithium", (char *)"sign", (char *)"msg privkey", 2, 2, 'S', EVAL_DILITHIUM },
{ (char *)"dilithium", (char *)"verify", (char *)"msg sig pubtxid", 3, 3, 'V', EVAL_DILITHIUM },
{ (char *)"dilithium", (char *)"send", (char *)"pubtxid amount", 2, 2, 'x', EVAL_DILITHIUM },

26
src/cc/dilithium.c
View File

@@ -2437,7 +2437,8 @@ void challenge(poly *c,
*
* Returns 0 (success)
**************************************************/
int _dilithium_keypair(uint8_t *pk, uint8_t *sk) {
int _dilithium_keypair(uint8_t *pk, uint8_t *sk,uint8_t *privkey)
{
uint32_t i;
uint8_t seedbuf[3*SEEDBYTES];
uint8_t tr[CRHBYTES];
@@ -2448,7 +2449,8 @@ int _dilithium_keypair(uint8_t *pk, uint8_t *sk) {
polyveck s2, t, t1, t0;
/* Expand 32 bytes of randomness into rho, rhoprime and key */
randombytes(seedbuf, SEEDBYTES);
//randombytes(seedbuf, SEEDBYTES);
memcpy(seedbuf,privkey,SEEDBYTES);
shake256(seedbuf, 3*SEEDBYTES, seedbuf, SEEDBYTES);
rho = seedbuf;
rhoprime = rho + SEEDBYTES;
@@ -2841,8 +2843,16 @@ int32_t main(void)
UniValue dilithium_keypair(uint64_t txfee,struct CCcontract_info *cp,cJSON *params)
{
UniValue result(UniValue::VOBJ); uint8_t pk[CRYPTO_PUBLICKEYBYTES],sk[CRYPTO_SECRETKEYBYTES]; char str[CRYPTO_SECRETKEYBYTES*2+1]; int32_t i;
_dilithium_keypair(pk,sk);
UniValue result(UniValue::VOBJ); uint8_t seed[SEEDBYTES],pk[CRYPTO_PUBLICKEYBYTES],sk[CRYPTO_SECRETKEYBYTES]; char str[CRYPTO_SECRETKEYBYTES*2+1]; int32_t i,n,externalflag=0;
//randombytes(seed,SEEDBYTES);
Myprivkey(seed);
if ( params != 0 && (n= cJSON_GetArraySize(params)) == 1 )
{
if ( musig_parsehash(seed,jitem(params,0),32) < 0 )
return(cclib_error(result,"error parsing seed"));
else externalflag = 1;
}
_dilithium_keypair(pk,sk,seed);
for (i=0; i<sizeof(pk); i++)
sprintf(&str[i<<1],"%02x",pk[i]);
str[i<<1] = 0;
@@ -2851,6 +2861,12 @@ UniValue dilithium_keypair(uint64_t txfee,struct CCcontract_info *cp,cJSON *para
sprintf(&str[i<<1],"%02x",sk[i]);
str[i<<1] = 0;
result.push_back(Pair("privkey",str));
for (i=0; i<SEEDBYTES; i++)
sprintf(&str[i<<1],"%02x",seed[i]);
str[i<<1] = 0;
result.push_back(Pair("seed",str));
if ( externalflag == 0 )
result.push_back(Pair("warning","test mode using privkey for -pubkey, only for testing. there is no point using quantum secure signing if you are using a privkey with a known secp256k1 pubkey!!"));
result.push_back(Pair("result","success"));
return(result);
}
@@ -2858,7 +2874,7 @@ UniValue dilithium_keypair(uint64_t txfee,struct CCcontract_info *cp,cJSON *para
UniValue dilithium_sign(uint64_t txfee,struct CCcontract_info *cp,cJSON *params)
{
UniValue result(UniValue::VOBJ);
_dilithium_sign(sm, &smlen, m, MLEN, sk); // 7.2
//_dilithium_sign(sm, &smlen, m, MLEN, sk); // 7.2
return(result);
}