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(wrapped_length/wrapped_length_derived): when calculating the length

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of the encrypted data, use the keyed checksum length if the enctype
supports a keyed checksum. This only matter for aes, for all other
enctypes the key and unkeyed checksum have the same length.


git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@12450 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
2003-07-19 07:34:12 +00:00
parent 8c720307bc
commit ea7327e39d
1 changed files with 11 additions and 2 deletions
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13
lib/krb5/crypto.c
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@@ -3586,9 +3586,15 @@ wrapped_length (krb5_context context,
{
struct encryption_type *et = crypto->et;
size_t padsize = et->padsize;
size_t checksumsize;
size_t res;
res = et->confoundersize + et->checksum->checksumsize + data_len;
if (et->keyed_checksum)
checksumsize = et->keyed_checksum->checksumsize;
else
checksumsize = et->checksum->checksumsize;
res = et->confoundersize + checksumsize + data_len;
res = (res + padsize - 1) / padsize * padsize;
return res;
}
@@ -3604,7 +3610,10 @@ wrapped_length_dervied (krb5_context context,
res = et->confoundersize + data_len;
res = (res + padsize - 1) / padsize * padsize;
res += et->checksum->checksumsize;
if (et->keyed_checksum)
res += et->keyed_checksum->checksumsize;
else
res += et->checksum->checksumsize;
return res;
}