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Verify roc

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jl777
2019-02-22 00:41:51 -11:00
parent 3de50a250b
commit a687d695af
1 changed files with 27 additions and 17 deletions
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44
src/cc/musig.cpp
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@@ -620,25 +620,35 @@ UniValue musig_partialsig(uint64_t txfee,struct CCcontract_info *cp,cJSON *param
UniValue musig_verify(uint64_t txfee,struct CCcontract_info *cp,cJSON *params)
{
static secp256k1_context *ctx;
UniValue result(UniValue::VOBJ); int32_t n;
UniValue result(UniValue::VOBJ); int32_t i,n; uint8_t msg[32],musig64[64]; secp256k1_pubkey combined_pk; secp256k1_schnorrsig musig; char str[129];
if ( ctx == 0 )
ctx = secp256k1_context_create(SECP256K1_CONTEXT_SIGN | SECP256K1_CONTEXT_VERIFY);
if ( params != 0 && (n= cJSON_GetArraySize(params)) > 0 )
if ( params != 0 && (n= cJSON_GetArraySize(params)) != 3 )
{
// can code this out of order
}
result.push_back(Pair("result","success"));
/** Verify a Schnorr signature.
*
* Returns: 1: correct signature
* 0: incorrect or unparseable signature
* Args: ctx: a secp256k1 context object, initialized for verification.
* In: sig: the signature being verified (cannot be NULL)
* msg32: the 32-byte message hash being verified (cannot be NULL)
* pubkey: pointer to a public key to verify with (cannot be NULL)
*/
// if (!secp256k1_schnorrsig_verify(ctx, &sig, msg, &combined_pk)) {
return(result);
if ( musig_parsehash32(msg,jitem(params,0)) < 0 )
return(cclib_error(result,"error parsing pkhash"));
else if ( musig_parsepubkey(ctx,combined_pk,jitem(params,1)) < 0 )
return(cclib_error(result,"error parsing combined_pk"));
else if ( musig_parsehash64(musig64,jitem(params,2)) < 0 )
return(cclib_error(result,"error parsing musig64"));
for (i=0; i<32; i++)
sprintf(&str[i*2],"%02x",msg[i]);
str[64] = 0;
result.push_back(Pair("msg",str));
result.push_back(Pair("combined_pk",jstr(jitem(params,1),0)));
for (i=0; i<64; i++)
sprintf(&str[i*2],"%02x",musig64[i]);
str[128] = 0;
result.push_back(Pair("combinedsig",str));
if ( secp256k1_schnorrsig_parse(ctx,&musig,&musig64[0]) > 0 )
{
if ( secp256k1_schnorrsig_verify(ctx,&musig,msg,&combined_pk) > 0 )
{
result.push_back(Pair("result","success"));
return(result);
} else return(cclib_error(result,"musig didnt verify"));
} else return(cclib_error(result,"couldnt parse musig64"));
} else return(cclib_error(result,"wrong number of params, need 3: msg, combined_pk, combinedsig"));
}
// helpers for rpc calls that generate/validate onchain tx
@@ -733,7 +743,7 @@ UniValue musig_spend(uint64_t txfee,struct CCcontract_info *cp,cJSON *params)
}
if ( !secp256k1_schnorrsig_verify((const secp256k1_context *)ctx,&musig,(const uint8_t *)msg,(const secp256k1_pubkey *)&combined_pk) )
{
//return(cclib_error(result,"musig didnt validate"));
return(cclib_error(result,"musig didnt validate"));
}
mtx.vin.push_back(CTxIn(prevhash,MUSIG_PREVN));
mtx.vout.push_back(vout);