1 files changed, 5 insertions, 2 deletions
diff --git a/src/rpc/util.cpp b/src/rpc/util.cpp
index 22ec4e6967..9a7c731afe 100644
--- a/src/rpc/util.cpp
+++ b/src/rpc/util.cpp
@@ -194,11 +194,14 @@ std::string HelpExampleRpcNamed(const std::string& methodname, const RPCArgList&
 CPubKey HexToPubKey(const std::string& hex_in)
 {
     if (!IsHex(hex_in)) {
-        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid public key: " + hex_in);
+        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Pubkey \"" + hex_in + "\" must be a hex string");
+    }
+    if (hex_in.length() != 66 && hex_in.length() != 130) {
+        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Pubkey \"" + hex_in + "\" must have a length of either 33 or 65 bytes");
     }
     CPubKey vchPubKey(ParseHex(hex_in));
     if (!vchPubKey.IsFullyValid()) {
-        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid public key: " + hex_in);
+        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Pubkey \"" + hex_in + "\" must be cryptographically valid.");
     }
     return vchPubKey;
 }