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From: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
Date: Thu, 7 Sep 2017 19:04:00 -0400
Subject: gpg: default to AES-256.
* g10/main.h (DEFAULT_CIPHER_ALGO): Prefer AES256 by default.
--
It's 2017, and pretty much everyone has AES-256 available. Symmetric
crypto is also rarely the bottleneck (asymmetric crypto is much more
expensive). AES-256 provides some level of protection against
large-scale decryption efforts, and longer key lengths provide a hedge
against unforseen cryptanalysis.
Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
(cherry picked from commit 73ff075204df09db5248170a049f06498cdbb7aa)
---
g10/main.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/g10/main.h b/g10/main.h
index 273ddaa..d1a54db 100644
--- a/g10/main.h
+++ b/g10/main.h
@@ -31,7 +31,9 @@
(i.e. uncompressed) rather than 1 (zip). However, the real world
issues of speed and size come into play here. */
-#if GPG_USE_AES128
+#if GPG_USE_AES256
+# define DEFAULT_CIPHER_ALGO CIPHER_ALGO_AES256
+#elif GPG_USE_AES128
# define DEFAULT_CIPHER_ALGO CIPHER_ALGO_AES
#elif GPG_USE_CAST5
# define DEFAULT_CIPHER_ALGO CIPHER_ALGO_CAST5
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