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Deprecated failed KDF

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Co-Authored-By: brekotis <93345790+brekotis@users.noreply.github.com>
This commit is contained in:
Alexey
2026-02-15 12:29:34 +03:00
parent e911a21a93
commit 427c7dd375
1 changed files with 7 additions and 1 deletions
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8
src/protocol/obfuscation.rs
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@@ -160,6 +160,12 @@ pub fn prepare_tg_nonce(
} }
/// Encrypt the outgoing nonce for Telegram /// Encrypt the outgoing nonce for Telegram
/// Legacy helper — **do not use**.
/// WARNING: logic diverges from Python/C reference (SHA256 of 48 bytes, IV from head).
/// Kept only to avoid breaking external callers; prefer `encrypt_tg_nonce_with_ciphers`.
#[deprecated(
note = "Incorrect MTProto obfuscation KDF; use proxy::handshake::encrypt_tg_nonce_with_ciphers"
)]
pub fn encrypt_nonce(nonce: &[u8; HANDSHAKE_LEN]) -> Vec<u8> { pub fn encrypt_nonce(nonce: &[u8; HANDSHAKE_LEN]) -> Vec<u8> {
let key_iv = &nonce[SKIP_LEN..SKIP_LEN + KEY_LEN + IV_LEN]; let key_iv = &nonce[SKIP_LEN..SKIP_LEN + KEY_LEN + IV_LEN];
let enc_key = sha256(key_iv); let enc_key = sha256(key_iv);
@@ -208,4 +214,4 @@ mod tests {
assert!(is_valid_nonce(&nonce)); assert!(is_valid_nonce(&nonce));
assert_eq!(nonce.len(), HANDSHAKE_LEN); assert_eq!(nonce.len(), HANDSHAKE_LEN);
} }
} }