From e445b2f3f84f8b09b391c4bee2e6c2886963f2fe Mon Sep 17 00:00:00 2001
From: Frank Denis
Date: Wed, 12 Mar 2025 01:52:15 +0100
Subject: Update overhead for AEGIS-256 with 32-bit nonces

---
 Documentation/file-format.md | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'Documentation')

diff --git a/Documentation/file-format.md b/Documentation/file-format.md
index 73c505f..7b5f765 100644
--- a/Documentation/file-format.md
+++ b/Documentation/file-format.md
@@ -30,10 +30,12 @@ Data block, AEGIS (enabled via `-init -aegis`)
 	1-4096 bytes encrypted data
 	16 bytes tag
 
-Full block overhead (AEGIS, AES-GCM and AES-SIV mode) = 32/4096 = 1/128 = 0.78125 %
+Full block overhead (AES-GCM and AES-SIV mode) = 32/4096 = 1/128 = 0.78125 %
 
 Full block overhead (XChaCha20-Poly1305 mode) = 40/4096 = \~1 %
 
+Full block overhead (AEGIS-256X2 mode) = 48/4096 = 3/256 = 1.171875 %
+
 Example: 1-byte file, AES-GCM and AES-SIV mode
 ----------------------------------------------
 
-- 
cgit v1.2.3