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new functions DES_encrypt_null_ivec' and DES_encrypt_key_ivec'

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@2253 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Assar Westerlund
1997-07-13 07:26:22 +00:00
parent 757f7b9430
commit 32fd82841a
1 changed files with 23 additions and 6 deletions
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29
lib/krb5/encrypt.c
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@@ -18,8 +18,21 @@ NULL_encrypt(void *p, size_t len, const krb5_keyblock *keyblock, int encrypt)
}
static void
DES_encrypt(void *p, size_t len,
const krb5_keyblock *keyblock, int encrypt)
DES_encrypt_null_ivec(void *p, size_t len,
const krb5_keyblock *keyblock, int encrypt)
{
des_cblock key;
des_cblock ivec;
des_key_schedule schedule;
memcpy(&key, keyblock->keyvalue.data, sizeof(key));
des_set_key(&key, schedule);
memset (&ivec, 0, sizeof(ivec));
des_cbc_encrypt(p, p, len, schedule, &ivec, encrypt);
}
static void
DES_encrypt_key_ivec(void *p, size_t len,
const krb5_keyblock *keyblock, int encrypt)
{
des_cblock key;
des_key_schedule schedule;
@@ -35,9 +48,12 @@ DES3_encrypt(void *p, size_t len, const krb5_keyblock *keyblock, int encrypt)
}
static struct encryption_type em [] = {
{ ETYPE_DES_CBC_CRC, 8, 8, DES_encrypt, KEYTYPE_DES, CKSUMTYPE_CRC32 },
{ ETYPE_DES_CBC_MD4, 8, 8, DES_encrypt, KEYTYPE_DES, CKSUMTYPE_RSA_MD4 },
{ ETYPE_DES_CBC_MD5, 8, 8, DES_encrypt, KEYTYPE_DES, CKSUMTYPE_RSA_MD5 },
{ ETYPE_DES_CBC_CRC, 8, 8, DES_encrypt_key_ivec,
KEYTYPE_DES, CKSUMTYPE_CRC32 },
{ ETYPE_DES_CBC_MD4, 8, 8, DES_encrypt_null_ivec,
KEYTYPE_DES, CKSUMTYPE_RSA_MD4 },
{ ETYPE_DES_CBC_MD5, 8, 8, DES_encrypt_null_ivec,
KEYTYPE_DES, CKSUMTYPE_RSA_MD5 },
{ ETYPE_NULL, 1, 0, NULL_encrypt, KEYTYPE_NULL, CKSUMTYPE_NONE },
};
@@ -106,7 +122,7 @@ krb5_do_encrypt(krb5_context context,
krb5_generate_random_block(p, et->confoundersize); /* XXX */
memcpy(p + et->confoundersize + checksumsize, ptr, len);
krb5_create_checksum(context, et->cksumtype, p, sz, &cksum);
krb5_create_checksum(context, et->cksumtype, p, sz, NULL, &cksum);
memcpy(p + et->confoundersize, cksum.checksum.data, checksumsize);
free_Checksum(&cksum);
(*et->encrypt)(p, sz, keyblock, 1);
@@ -144,6 +160,7 @@ krb5_do_decrypt(krb5_context context,
ret = krb5_verify_checksum (context,
ptr,
len,
NULL,
&cksum);
free_Checksum(&cksum);
if(ret)