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From: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
Date: Thu, 7 Sep 2017 18:41:10 -0400
Subject: gpg: default to 3072-bit keys.
* agent/command.c (hlp_genkey): update help text to suggest the use of
3072 bits.
* doc/wks.texi: Make example match default generation.
* g10/keygen.c (gen_elg): update default from 2048 to 3072.
* g10/keyid.c (pubkey_string): update comment so that first example
is the default 3072-bit RSA.
--
3072-bit RSA is widely considered to be 128-bit-equivalent security.
This is a sensible default in 2017.
Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
(cherry picked from commit 909fbca19678e6e36968607e8a2348381da39d8c)
---
agent/command.c | 2 +-
doc/wks.texi | 4 ++--
g10/keygen.c | 2 +-
g10/keyid.c | 4 ++--
4 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/agent/command.c b/agent/command.c
index b682c55..ea65290 100644
--- a/agent/command.c
+++ b/agent/command.c
@@ -843,7 +843,7 @@ static const char hlp_genkey[] =
"\n"
" C: GENKEY\n"
" S: INQUIRE KEYPARAM\n"
- " C: D (genkey (rsa (nbits 2048)))\n"
+ " C: D (genkey (rsa (nbits 3072)))\n"
" C: END\n"
" S: D (public-key\n"
" S: D (rsa (n 326487324683264) (e 10001)))\n"
diff --git a/doc/wks.texi b/doc/wks.texi
index e398ccb..68ed117 100644
--- a/doc/wks.texi
+++ b/doc/wks.texi
@@ -447,10 +447,10 @@ the submission address:
The output of the last command looks similar to this:
@example
- sec rsa2048 2016-08-30 [SC]
+ sec rsa3072 2016-08-30 [SC]
C0FCF8642D830C53246211400346653590B3795B
uid [ultimate] key-submission@@example.net
- ssb rsa2048 2016-08-30 [E]
+ ssb rsa3072 2016-08-30 [E]
@end example
Take the fingerprint from that output and manually publish the key:
diff --git a/g10/keygen.c b/g10/keygen.c
index 80d65c4..5b4a785 100644
--- a/g10/keygen.c
+++ b/g10/keygen.c
@@ -1436,7 +1436,7 @@ gen_elg (int algo, unsigned int nbits, KBNODE pub_root,
if (nbits < 1024)
{
- nbits = 2048;
+ nbits = 3072;
log_info (_("keysize invalid; using %u bits\n"), nbits );
}
else if (nbits > 4096)
diff --git a/g10/keyid.c b/g10/keyid.c
index 69d85da..2987287 100644
--- a/g10/keyid.c
+++ b/g10/keyid.c
@@ -73,7 +73,7 @@ pubkey_letter( int algo )
is copied to the supplied buffer up a length of BUFSIZE-1.
Examples for the output are:
- "rsa2048" - RSA with 2048 bit
+ "rsa3072" - RSA with 3072 bit
"elg1024" - Elgamal with 1024 bit
"ed25519" - ECC using the curve Ed25519.
"E_1.2.3.4" - ECC using the unsupported curve with OID "1.2.3.4".
@@ -83,7 +83,7 @@ pubkey_letter( int algo )
If the option --legacy-list-mode is active, the output use the
legacy format:
- "2048R" - RSA with 2048 bit
+ "3072R" - RSA with 3072 bit
"1024g" - Elgamal with 1024 bit
"256E" - ECDSA using a curve with 256 bit
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