add secp256k1 condition type to cryptoconditions

src/komodo_cryptoconditions.cpp

@@ -3,8 +3,8 @@
 #include "script/interpreter.h"
 
 
-int TransactionSignatureChecker::CheckAuxCondition(const CC *cond) const {
-
+int TransactionSignatureChecker::CheckAuxCondition(const CC *cond) const
+{
     // Check that condition is equal to fulfillment
     if (0 == strcmp((const char*)cond->method, "equals")) {
         return (cond->conditionAuxLength == cond->fulfillmentAuxLength) &&

src/script/interpreter.cpp

@@ -1164,7 +1164,7 @@ static int komodoCCAux(CC *cond, void *checker) {
 bool TransactionSignatureChecker::CheckCryptoCondition(const CC *cond, const std::vector<unsigned char>& condBin, const CScript& scriptCode) const
 {
     uint256 message = SignatureHash(scriptCode, *txTo, nIn, SIGHASH_ALL);
-    return cc_verify(cond, (const unsigned char*)&message, 32,
+    return cc_verify(cond, (const unsigned char*)&message, 32, 0,
             condBin.data(), condBin.size(), komodoCCAux, (void*)this);
 }
 

src/secp256k1/src/ecdsa_impl.h

@@ -47,12 +47,20 @@ static const secp256k1_fe_t secp256k1_ecdsa_const_p_minus_order = SECP256K1_FE_C
 );
 
 static int secp256k1_ecdsa_sig_parse(secp256k1_ecdsa_sig_t *r, const unsigned char *sig, int size) {
+
+    /* libscott had to add this to get this version of the library to read compact sigs */
+    int overflow = 0;
+    if (size == 64) {
+        secp256k1_scalar_set_b32(&r->r, sig, &overflow);
+        secp256k1_scalar_set_b32(&r->s, sig+32, &overflow);
+        return 1;
+    }
+
     unsigned char ra[32] = {0}, sa[32] = {0};
     const unsigned char *rp;
     const unsigned char *sp;
     int lenr;
     int lens;
-    int overflow;
     if (sig[0] != 0x30) {
         return 0;
     }