From efad3a3cc1fa995058eaafb5435f693647c23571 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pascal=20B=C3=BChler?= <pascal@bgx.no>
Date: Fri, 12 Jan 2024 21:47:36 +0100
Subject: [PATCH] remove redundant size_t casts

---
 srtp/srtp.c        | 12 ++++++------
 test/rtp_decoder.c |  2 +-
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/srtp/srtp.c b/srtp/srtp.c
index 84dbd24b9..81782135e 100644
--- a/srtp/srtp.c
+++ b/srtp/srtp.c
@@ -1824,7 +1824,7 @@ static srtp_err_status_t srtp_protect_aead(srtp_ctx_t *ctx,
     if (!(enc_start <= rtp_hdr + *pkt_octet_len))
         return srtp_err_status_parse_err;
 
-    enc_octet_len = *pkt_octet_len - (size_t)(enc_start - rtp_hdr);
+    enc_octet_len = *pkt_octet_len - (enc_start - rtp_hdr);
 
     /*
      * estimate the packet index using the start of the replay window
@@ -1895,7 +1895,7 @@ static srtp_err_status_t srtp_protect_aead(srtp_ctx_t *ctx,
     /*
      * Set the AAD over the RTP header
      */
-    aad_len = (size_t)(enc_start - rtp_hdr);
+    aad_len = enc_start - rtp_hdr;
     status = srtp_cipher_set_aad(session_keys->rtp_cipher, rtp_hdr, aad_len);
     if (status) {
         return (srtp_err_status_cipher_fail);
@@ -2005,7 +2005,7 @@ static srtp_err_status_t srtp_unprotect_aead(srtp_ctx_t *ctx,
     /*
      * We pass the tag down to the cipher when doing GCM mode
      */
-    enc_octet_len = *pkt_octet_len - mki_size - (size_t)(enc_start - srtp_hdr);
+    enc_octet_len = *pkt_octet_len - mki_size - (enc_start - srtp_hdr);
 
     /*
      * Sanity check the encrypted payload length against
@@ -2037,7 +2037,7 @@ static srtp_err_status_t srtp_unprotect_aead(srtp_ctx_t *ctx,
     /*
      * Set the AAD for AES-GCM, which is the RTP header
      */
-    aad_len = (size_t)(enc_start - srtp_hdr);
+    aad_len = enc_start - srtp_hdr;
     status = srtp_cipher_set_aad(session_keys->rtp_cipher, srtp_hdr, aad_len);
     if (status) {
         return (srtp_err_status_cipher_fail);
@@ -2280,7 +2280,7 @@ srtp_err_status_t srtp_protect_mki(srtp_ctx_t *ctx,
         if (!(enc_start <= rtp_hdr + *pkt_octet_len))
             return srtp_err_status_parse_err;
 
-        enc_octet_len = *pkt_octet_len - (size_t)(enc_start - rtp_hdr);
+        enc_octet_len = *pkt_octet_len - (enc_start - rtp_hdr);
     } else {
         enc_start = NULL;
     }
@@ -2649,7 +2649,7 @@ srtp_err_status_t srtp_unprotect_mki(srtp_ctx_t *ctx,
             return srtp_err_status_parse_err;
 
         enc_octet_len = *pkt_octet_len - tag_len - mki_size -
-                        (size_t)(enc_start - srtp_hdr);
+                        (enc_start - srtp_hdr);
     } else {
         enc_start = NULL;
     }
diff --git a/test/rtp_decoder.c b/test/rtp_decoder.c
index 869512dcf..f9ab24d24 100644
--- a/test/rtp_decoder.c
+++ b/test/rtp_decoder.c
@@ -556,7 +556,7 @@ int main(int argc, char *argv[])
                     expected_len, len);
             exit(1);
         }
-        if (strlen(input_key) > (size_t)policy.rtp.cipher_key_len * 2) {
+        if (strlen(input_key) > policy.rtp.cipher_key_len * 2) {
             fprintf(stderr,
                     "error: too many digits in key/salt "
                     "(should be %zu hexadecimal digits, found %u)\n",