Add from_secp256k1_pubkey to Value class

CyberKayt · Jul 12, 2018 · 4c5e534 · 4c5e534
1 parent 2eb1f20
commit 4c5e534
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Showing 2 changed files with 13 additions and 0 deletions.
diff --git a/value.cpp b/value.cpp
@@ -67,6 +67,17 @@ void Value::do_combine_pubkeys() {
     secp256k1_ec_pubkey_serialize(secp256k1_context_sign, data.data(), &publen, &result, SECP256K1_EC_COMPRESSED);
 }
 
+Value Value::from_secp256k1_pubkey(const void* secp256k1_pubkey_ptr) {
+    if (!secp256k1_context_sign) ECC_Start();
+
+    size_t clen = CPubKey::PUBLIC_KEY_SIZE;
+    CPubKey result;
+    secp256k1_ec_pubkey_serialize(secp256k1_context_sign, (unsigned char*)result.begin(), &clen, (const secp256k1_pubkey *)secp256k1_pubkey_ptr, SECP256K1_EC_COMPRESSED);
+    assert(result.size() == clen);
+    assert(result.IsValid());
+    return Value(std::vector<uint8_t>(result.begin(), result.end()));
+}
+
 #ifdef ENABLE_DANGEROUS
 
 void Value::do_combine_privkeys() {

diff --git a/value.h b/value.h
@@ -101,6 +101,8 @@ struct Value {
         return HexStr(s);
     }
 
+    static Value from_secp256k1_pubkey(const void* secp256k1_pubkey_ptr);
+
     explicit Value(const int64_t i)                { int64 = i; type = T_INT; }
     explicit Value(const opcodetype o)             { opcode = o; type = T_OPCODE; }
     explicit Value(const std::vector<uint8_t>& d)  { data = d; type = T_DATA; }