- Addedd writing and updating of seedfiles as functions to CTR_DRBG
diff --git a/include/polarssl/ctr_drbg.h b/include/polarssl/ctr_drbg.h
index 01a58e1..b2014c2 100644
--- a/include/polarssl/ctr_drbg.h
+++ b/include/polarssl/ctr_drbg.h
@@ -152,7 +152,7 @@
* \param add_len Length of additional data
*/
void ctr_drbg_update( ctr_drbg_context *ctx,
- const unsigned char *additional, size_t add_len );
+ const unsigned char *additional, size_t add_len );
/**
* \brief CTR_DRBG generate random with additional update input
@@ -189,6 +189,30 @@
int ctr_drbg_random( void *p_rng,
unsigned char *output, size_t output_len );
+#if defined(POLARSSL_FS_IO)
+/**
+ * \brief Write a seed file
+ *
+ * \param path Name of the file
+ *
+ * \return 0 if successful, 1 on file error, or
+ * POLARSSL_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED
+ */
+int ctr_drbg_write_seed_file( ctr_drbg_context *ctx, const char *path );
+
+/**
+ * \brief Read and update a seed file. Seed is added to this
+ * instance
+ *
+ * \param path Name of the file
+ *
+ * \return 0 if successful, 1 on file error,
+ * POLARSSL_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED or
+ * POLARSSL_ERR_CTR_DRBG_INPUT_TOO_BIG
+ */
+int ctr_drbg_update_seed_file( ctr_drbg_context *ctx, const char *path );
+#endif
+
/**
* \brief Checkup routine
*