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gpg: Change default and max AEAD chunk size to 4 MiB

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This is per OpenPGP WG design team decision from 2021-08-13
(raising a new wall after exactly 60 years ;-)

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2021-08-27 12:05:50 +02:00
parent 0b64c27446
commit ad3dabc9fb
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GPG Key ID: E3FDFF218E45B72B
2 changed files with 4 additions and 4 deletions
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2
doc/gpg.texi
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@ -2391,7 +2391,7 @@ receiving side can check for transmission errors or tampering at the
end of each chunk and does not need to delay this until all data has
been received. The used chunk size is 2^@var{n} byte. The lowest
allowed value for @var{n} is 6 (64 byte) and the largest is the
default of 27 which creates chunks not larger than 128 MiB.
default of 22 which creates chunks not larger than 4 MiB.
@item --input-size-hint @var{n}
@opindex input-size-hint

6
g10/gpg.c
View File

@ -3974,15 +3974,15 @@ main (int argc, char **argv)
/* Check chunk size. Please fix also the man page if you change
* the default. The limits are given by the specs. */
if (!opt.chunk_size)
opt.chunk_size = 27; /* Default to the suggested max of 128 MiB. */
opt.chunk_size = 22; /* Default to the suggested max of 4 MiB. */
else if (opt.chunk_size < 6)
{
opt.chunk_size = 6;
log_info (_("chunk size invalid - using %d\n"), opt.chunk_size);
}
else if (opt.chunk_size > (allow_large_chunks? 62 : 27))
else if (opt.chunk_size > (allow_large_chunks? 62 : 22))
{
opt.chunk_size = (allow_large_chunks? 62 : 27);
opt.chunk_size = (allow_large_chunks? 62 : 22);
log_info (_("chunk size invalid - using %d\n"), opt.chunk_size);
}