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simplify now that there is only one data buffer.

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@24751 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
2009-02-16 19:13:08 +00:00
parent dcb75ee170
commit 8acbbf8edf
1 changed files with 17 additions and 29 deletions
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46
lib/krb5/crypto.c
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@@ -3183,7 +3183,7 @@ krb5_encrypt_iov_ivec(krb5_context context,
krb5_error_code ret;
struct key_data *dkey;
const struct encryption_type *et = crypto->et;
krb5_crypto_iov *tiv, *piv, *hiv;
krb5_crypto_iov *tiv, *piv, *hiv, *div;
if (num_data < 0) {
krb5_clear_error_message(context);
@@ -3198,18 +3198,16 @@ krb5_encrypt_iov_ivec(krb5_context context,
headersz = et->confoundersize;
trailersz = CHECKSUMSIZE(et->keyed_checksum);
for (len = 0, i = 0; i < num_data; i++) {
if (data[i].flags != KRB5_CRYPTO_TYPE_HEADER &&
data[i].flags == KRB5_CRYPTO_TYPE_DATA) {
len += data[i].data.length;
}
}
div = find_iv(data, num_data, KRB5_CRYPTO_TYPE_DATA);
if (div == NULL)
return KRB5_CRYPTO_INTERNAL;
len = div->data.length;
sz = headersz + len;
block_sz = (sz + et->padsize - 1) &~ (et->padsize - 1); /* pad */
pad_sz = block_sz - sz;
trailersz += pad_sz;
/* header */
@@ -3296,13 +3294,9 @@ krb5_encrypt_iov_ivec(krb5_context context,
/* XXX replace with EVP_Cipher */
len = hiv->data.length;
for (i = 0; i < num_data; i++) {
if (data[i].flags != KRB5_CRYPTO_TYPE_DATA &&
data[i].flags != KRB5_CRYPTO_TYPE_PADDING)
continue;
len += data[i].data.length;
}
len = hiv->data.length + div->data.length;
if (piv)
len += piv->data.length;
p = q = malloc(len);
if(p == NULL)
@@ -3310,13 +3304,9 @@ krb5_encrypt_iov_ivec(krb5_context context,
memcpy(q, hiv->data.data, hiv->data.length);
q += hiv->data.length;
for (i = 0; i < num_data; i++) {
if (data[i].flags != KRB5_CRYPTO_TYPE_DATA &&
data[i].flags != KRB5_CRYPTO_TYPE_PADDING)
continue;
memcpy(q, data[i].data.data, data[i].data.length);
q += data[i].data.length;
}
memcpy(q, div->data.data, div->data.length);
q += div->data.length;
memset(q, 0, pad_sz);
ret = _get_derived_key(context, crypto, ENCRYPTION_USAGE(usage), &dkey);
if(ret) {
@@ -3337,16 +3327,14 @@ krb5_encrypt_iov_ivec(krb5_context context,
/* now copy data back to buffers */
q = p;
memcpy(hiv->data.data, q, hiv->data.length);
q += hiv->data.length;
for (i = 0; i < num_data; i++) {
if (data[i].flags != KRB5_CRYPTO_TYPE_DATA &&
data[i].flags != KRB5_CRYPTO_TYPE_PADDING)
continue;
memcpy(data[i].data.data, q, data[i].data.length);
q += data[i].data.length;
}
memcpy(div->data.data, q, div->data.length);
q += div->data.length;
memcpy(piv->data.data, q, pad_sz);
free(p);
return ret;