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-rw-r--r--src/libstrongswan/crypto/prfs/prf.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/libstrongswan/crypto/prfs/prf.h b/src/libstrongswan/crypto/prfs/prf.h
index ad15205d3..8b98b41aa 100644
--- a/src/libstrongswan/crypto/prfs/prf.h
+++ b/src/libstrongswan/crypto/prfs/prf.h
@@ -71,13 +71,16 @@ extern enum_name_t *pseudo_random_function_names;
* Generic interface for pseudo-random-functions.
*/
struct prf_t {
+
/**
* Generates pseudo random bytes and writes them in the buffer.
*
* @param seed a chunk containing the seed for the next bytes
* @param buffer pointer where the generated bytes will be written
+ * @return TRUE if bytes generated successfully
*/
- void (*get_bytes) (prf_t *this, chunk_t seed, u_int8_t *buffer);
+ __attribute__((warn_unused_result))
+ bool (*get_bytes) (prf_t *this, chunk_t seed, u_int8_t *buffer);
/**
* Generates pseudo random bytes and allocate space for them.