Make ECP error codes more specific
diff --git a/include/polarssl/ecp.h b/include/polarssl/ecp.h
index b43278d..7a58011 100644
--- a/include/polarssl/ecp.h
+++ b/include/polarssl/ecp.h
@@ -34,9 +34,11 @@
*/
#define POLARSSL_ERR_ECP_BAD_INPUT_DATA -0x4F80 /**< Bad input parameters to function. */
#define POLARSSL_ERR_ECP_BUFFER_TOO_SMALL -0x4F00 /**< The buffer is too small to write to. */
-#define POLARSSL_ERR_ECP_GENERIC -0x4E80 /**< Generic ECP error. */
-#define POLARSSL_ERR_ECP_FEATURE_UNAVAILABLE -0x4E00 /**< Requested curve not available. */
+#define POLARSSL_ERR_ECP_FEATURE_UNAVAILABLE -0x4E80 /**< Requested curve not available. */
#define POLARSSL_ERR_ECP_VERIFY_FAILED -0x4E00 /**< The signature is not valid. */
+#define POLARSSL_ERR_ECP_MALLOC_FAILED -0x4D80 /**< Memory allocation failed. */
+#define POLARSSL_ERR_ECP_RANDOM_FAILED -0x4D00 /**< Generation of random value, such as (ephemeral) key, failed. */
+#define POLARSSL_ERR_ECP_INVALID_KEY -0x4C80 /**< Invalid private or public key. */
#ifdef __cplusplus
extern "C" {
@@ -301,7 +303,7 @@
* \param ilen Actual length of input
*
* \return 0 if successful,
- * POLARSSL_ERR_ECP_GENERIC if input is invalid
+ * POLARSSL_ERR_ECP_BAD_INPUT_DATA if input is invalid
* POLARSSL_ERR_MPI_MALLOC_FAILED if memory allocation failed
*
* \note This function does NOT check that the point actually
@@ -474,7 +476,7 @@
* \param pt Point to check
*
* \return 0 if point is a valid public key,
- * POLARSSL_ERR_ECP_GENERIC otherwise.
+ * POLARSSL_ERR_ECP_INVALID_KEY otherwise.
*
* \note This function only checks the point is non-zero, has valid
* coordinates and lies on the curve, but not that it is
@@ -497,7 +499,7 @@
* \param d Integer to check
*
* \return 0 if point is a valid private key,
- * POLARSSL_ERR_ECP_GENERIC otherwise.
+ * POLARSSL_ERR_ECP_INVALID_KEY otherwise.
*
* \note Uses bare components rather than an ecp_keypair structure
* in order to ease use with other structures such as