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(decrypt_internal_derived): check that there's enough data

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@9622 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Assar Westerlund
2001-01-30 17:10:55 +00:00
parent 74fd83ce59
commit 5761d220bb
1 changed files with 4 additions and 1 deletions
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5
lib/krb5/crypto.c
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@@ -2305,12 +2305,15 @@ decrypt_internal_derived(krb5_context context,
struct encryption_type *et = crypto->et;
unsigned long l;
checksum_sz = CHECKSUMSIZE(et->keyed_checksum);
if (len < checksum_sz)
return EINVAL; /* better error code? */
p = malloc(len);
if(len != 0 && p == NULL)
return ENOMEM;
memcpy(p, data, len);
checksum_sz = CHECKSUMSIZE(et->keyed_checksum);
len -= checksum_sz;
ret = _get_derived_key(context, crypto, ENCRYPTION_USAGE(usage), &dkey);