Consolidate sequence counter incrementing code

The sequence counter was incremented in numerous different ways in
numerous different locations. We introduce a single function to do this
inside the record layer.

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Hugo Landau <hlandau@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/19424)

1 files changed, 2 insertions, 0 deletions

diff --git a/ssl/record/methods/recmethod_local.h b/ssl/record/methods/recmethod_local.h
index 2ee6c2e753..e1267500cf 100644
--- a/ssl/record/methods/recmethod_local.h
+++ b/ssl/record/methods/recmethod_local.h
@@ -344,6 +344,8 @@ __owur int ssl3_cbc_digest_record(const EVP_MD *md,
                                   const unsigned char *mac_secret,
                                   size_t mac_secret_length, char is_sslv3);
 
+int tls_increment_sequence_ctr(OSSL_RECORD_LAYER *rl);
+
 int tls_default_read_n(OSSL_RECORD_LAYER *rl, size_t n, size_t max, int extend,
                        int clearold, size_t *readbytes);
 int tls_get_more_records(OSSL_RECORD_LAYER *rl);