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Rust wrapper: check kdr_index range in srtp_kdf() and srtcp_kdf()

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Fix F-1257
This commit is contained in:
Josh Holtrop
2026-03-25 15:56:42 -04:00
parent 5c10fe9a58
commit f00636919e
1 changed files with 10 additions and 0 deletions
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wrapper/rust/wolfssl-wolfcrypt/src/kdf.rs
+10
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@@ -584,6 +584,11 @@ pub fn ssh_kdf(typ: i32, key_id: u8, k: &[u8], h: &[u8], session_id: &[u8], key:
#[cfg(kdf_srtp)]
pub fn srtp_kdf(key: &[u8], salt: &[u8], kdr_index: i32, idx: &[u8],
key1: &mut [u8], key2: &mut [u8], key3: &mut [u8]) -> Result<(), i32> {
if !(kdr_index == -1 || (0 <= kdr_index && (kdr_index as usize) <= idx.len() * 8)) {
// The kdr_index value must be either -1 or the number of bits that
// will be read from the idx slice.
return Err(sys::wolfCrypt_ErrorCodes_BAD_FUNC_ARG);
}
let key_size = key.len() as u32;
let salt_size = salt.len() as u32;
let key1_size = key1.len() as u32;
@@ -684,6 +689,11 @@ pub fn srtp_kdf_label(key: &[u8], salt: &[u8], kdr_index: i32, idx: &[u8],
#[cfg(kdf_srtp)]
pub fn srtcp_kdf(key: &[u8], salt: &[u8], kdr_index: i32, idx: &[u8],
key1: &mut [u8], key2: &mut [u8], key3: &mut [u8]) -> Result<(), i32> {
if !(kdr_index == -1 || (0 <= kdr_index && (kdr_index as usize) <= idx.len() * 8)) {
// The kdr_index value must be either -1 or the number of bits that
// will be read from the idx slice.
return Err(sys::wolfCrypt_ErrorCodes_BAD_FUNC_ARG);
}
let key_size = key.len() as u32;
let salt_size = salt.len() as u32;
let key1_size = key1.len() as u32;