diff options
Diffstat (limited to 'src/method_xsalsa20_poly1305.c')
| -rw-r--r-- | src/method_xsalsa20_poly1305.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/method_xsalsa20_poly1305.c b/src/method_xsalsa20_poly1305.c index 95fbfa2..ca928c5 100644 --- a/src/method_xsalsa20_poly1305.c +++ b/src/method_xsalsa20_poly1305.c @@ -86,11 +86,14 @@ static size_t method_min_decrypt_head_space(fastd_context *ctx) { return (crypto_secretbox_xsalsa20poly1305_BOXZEROBYTES - NONCEBYTES); } -static fastd_method_session_state* method_session_init(fastd_context *ctx, uint8_t *secret, size_t length, bool initiator) { +static fastd_method_session_state* method_session_init(fastd_context *ctx, uint8_t *secret, size_t length, bool initiator, fastd_method_session_state *old_session) { int i; if (length < crypto_secretbox_xsalsa20poly1305_KEYBYTES) exit_bug(ctx, "xsalsa20-poly1305: tried to init with short secret"); + + if (old_session && memcmp(secret, old_session->key, crypto_secretbox_xsalsa20poly1305_KEYBYTES) == 0) + return NULL; fastd_method_session_state *session = malloc(sizeof(fastd_method_session_state)); |