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+---
+layout: forum
+title: 'Re: Exception: 9key_error error'
+grand_parent: Forum Posts
+parent: Bitcoin Forum
+nav_order: 97
+date: 2010-05-16 22:53:59 UTC
+original: https://bitcointalk.org/index.php?topic=135.msg1133#msg1133
+---
+
+# Re: Exception: 9key_error error
+
+---
+
+```
+Re: Exception: 9key_error error
+May 16, 2010, 10:53:59 PM
+
+Does it happen every time you run it, or just happened once at some random time?
+
+I've never seen that fail before.  It's a call to OpenSSL that I assumed would never fail, but I put an error check there just in case.  I can't imagine how it would fail.  Out of memory maybe.
+
+The code is:
+
+key.h:
+    EC_KEY* pkey;
+
+        pkey = EC_KEY_new_by_curve_name(NID_secp256k1);
+        if (pkey == NULL)
+            throw key_error("CKey::CKey() : EC_KEY_new_by_curve_name failed");
+
+NID_secp256k1 is a constant.
+```