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_krb5_aes_cts_encrypt no longer used.

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@23565 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
2008-08-16 23:03:56 +00:00
parent 0a0d731350
commit 634dfaf5f3
1 changed files with 0 additions and 68 deletions
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68
lib/krb5/crypto.c
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@@ -2222,74 +2222,6 @@ DES_PCBC_encrypt_key_ivec(krb5_context context,
* AES draft-raeburn-krb-rijndael-krb-02
*/
void KRB5_LIB_FUNCTION
_krb5_aes_cts_encrypt(const unsigned char *in, unsigned char *out,
size_t len, const AES_KEY *key,
unsigned char *ivec, const int encryptp)
{
unsigned char tmp[AES_BLOCK_SIZE];
int i;
/*
* In the framework of kerberos, the length can never be shorter
* then at least one blocksize.
*/
if (encryptp) {
while(len > AES_BLOCK_SIZE) {
for (i = 0; i < AES_BLOCK_SIZE; i++)
tmp[i] = in[i] ^ ivec[i];
AES_encrypt(tmp, out, key);
memcpy(ivec, out, AES_BLOCK_SIZE);
len -= AES_BLOCK_SIZE;
in += AES_BLOCK_SIZE;
out += AES_BLOCK_SIZE;
}
for (i = 0; i < len; i++)
tmp[i] = in[i] ^ ivec[i];
for (; i < AES_BLOCK_SIZE; i++)
tmp[i] = 0 ^ ivec[i];
AES_encrypt(tmp, out - AES_BLOCK_SIZE, key);
memcpy(out, ivec, len);
memcpy(ivec, out - AES_BLOCK_SIZE, AES_BLOCK_SIZE);
} else {
unsigned char tmp2[AES_BLOCK_SIZE];
unsigned char tmp3[AES_BLOCK_SIZE];
while(len > AES_BLOCK_SIZE * 2) {
memcpy(tmp, in, AES_BLOCK_SIZE);
AES_decrypt(in, out, key);
for (i = 0; i < AES_BLOCK_SIZE; i++)
out[i] ^= ivec[i];
memcpy(ivec, tmp, AES_BLOCK_SIZE);
len -= AES_BLOCK_SIZE;
in += AES_BLOCK_SIZE;
out += AES_BLOCK_SIZE;
}
len -= AES_BLOCK_SIZE;
memcpy(tmp, in, AES_BLOCK_SIZE); /* save last iv */
AES_decrypt(in, tmp2, key);
memcpy(tmp3, in + AES_BLOCK_SIZE, len);
memcpy(tmp3 + len, tmp2 + len, AES_BLOCK_SIZE - len); /* xor 0 */
for (i = 0; i < len; i++)
out[i + AES_BLOCK_SIZE] = tmp2[i] ^ tmp3[i];
AES_decrypt(tmp3, out, key);
for (i = 0; i < AES_BLOCK_SIZE; i++)
out[i] ^= ivec[i];
memcpy(ivec, tmp, AES_BLOCK_SIZE);
}
}
static krb5_error_code
AES_CTS_encrypt(krb5_context context,
struct key_data *key,