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-rw-r--r--src/outbound_group_session.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/src/outbound_group_session.c b/src/outbound_group_session.c
index 4e4561a..ae45694 100644
--- a/src/outbound_group_session.c
+++ b/src/outbound_group_session.c
@@ -154,20 +154,23 @@ size_t olm_init_outbound_group_session_random_length(
size_t olm_init_outbound_group_session(
OlmOutboundGroupSession *session,
- uint8_t const * random, size_t random_length
+ uint8_t *random, size_t random_length
) {
+ const uint8_t *random_ptr = random;
+
if (random_length < olm_init_outbound_group_session_random_length(session)) {
/* Insufficient random data for new session */
session->last_error = OLM_NOT_ENOUGH_RANDOM;
return (size_t)-1;
}
- megolm_init(&(session->ratchet), random, 0);
- random += MEGOLM_RATCHET_LENGTH;
+ megolm_init(&(session->ratchet), random_ptr, 0);
+ random_ptr += MEGOLM_RATCHET_LENGTH;
- _olm_crypto_ed25519_generate_key(random, &(session->signing_key));
- random += ED25519_RANDOM_LENGTH;
+ _olm_crypto_ed25519_generate_key(random_ptr, &(session->signing_key));
+ random_ptr += ED25519_RANDOM_LENGTH;
+ _olm_unset(random, random_length);
return 0;
}