Make ECP error codes more specific
diff --git a/library/error.c b/library/error.c
index 4323e72..04ce28e 100644
--- a/library/error.c
+++ b/library/error.c
@@ -215,12 +215,16 @@
             snprintf( buf, buflen, "ECP - Bad input parameters to function" );
         if( use_ret == -(POLARSSL_ERR_ECP_BUFFER_TOO_SMALL) )
             snprintf( buf, buflen, "ECP - The buffer is too small to write to" );
-        if( use_ret == -(POLARSSL_ERR_ECP_GENERIC) )
-            snprintf( buf, buflen, "ECP - Generic ECP error" );
         if( use_ret == -(POLARSSL_ERR_ECP_FEATURE_UNAVAILABLE) )
             snprintf( buf, buflen, "ECP - Requested curve not available" );
         if( use_ret == -(POLARSSL_ERR_ECP_VERIFY_FAILED) )
             snprintf( buf, buflen, "ECP - The signature is not valid" );
+        if( use_ret == -(POLARSSL_ERR_ECP_MALLOC_FAILED) )
+            snprintf( buf, buflen, "ECP - Memory allocation failed" );
+        if( use_ret == -(POLARSSL_ERR_ECP_RANDOM_FAILED) )
+            snprintf( buf, buflen, "ECP - Generation of random value, such as (ephemeral) key, failed" );
+        if( use_ret == -(POLARSSL_ERR_ECP_INVALID_KEY) )
+            snprintf( buf, buflen, "ECP - Invalid private or public key" );
 #endif /* POLARSSL_ECP_C */
 
 #if defined(POLARSSL_MD_C)