static void *des3_make_context(void)
{
- return smalloc(3*sizeof(DESContext));
+ return snewn(3, DESContext);
}
static void *des3_ssh1_make_context(void)
{
/* Need 3 keys for each direction, in SSH1 */
- return smalloc(6*sizeof(DESContext));
+ return snewn(6, DESContext);
}
static void *des_make_context(void)
{
- return smalloc(sizeof(DESContext));
+ return snew(DESContext);
}
static void *des_ssh1_make_context(void)
{
/* Need one key for each direction, in SSH1 */
- return smalloc(2*sizeof(DESContext));
+ return snewn(2, DESContext);
}
static void des3_free_context(void *handle) /* used for both 3DES and DES */
memset(ourkeys, 0, sizeof(ourkeys));
}
-void des_encrypt_xdmauth(unsigned char *keydata, unsigned char *blk, int len)
+static void des_keysetup_xdmauth(unsigned char *keydata, DESContext *dc)
{
unsigned char key[8];
- DESContext dc;
int i, nbits, j;
unsigned int bits;
nbits -= 7;
}
- des_key_setup(GET_32BIT_MSB_FIRST(key), GET_32BIT_MSB_FIRST(key + 4),
- &dc);
+ des_key_setup(GET_32BIT_MSB_FIRST(key), GET_32BIT_MSB_FIRST(key + 4), dc);
+}
+
+void des_encrypt_xdmauth(unsigned char *keydata, unsigned char *blk, int len)
+{
+ DESContext dc;
+ des_keysetup_xdmauth(keydata, &dc);
des_cbc_encrypt(blk, blk, 24, &dc);
}
+void des_decrypt_xdmauth(unsigned char *keydata, unsigned char *blk, int len)
+{
+ DESContext dc;
+ des_keysetup_xdmauth(keydata, &dc);
+ des_cbc_decrypt(blk, blk, 24, &dc);
+}
+
static const struct ssh2_cipher ssh_3des_ssh2 = {
des3_make_context, des3_free_context, des3_iv, des3_key,
des3_ssh2_encrypt_blk, des3_ssh2_decrypt_blk,
};
/*
- * Single DES in ssh2. It isn't clear that "des-cbc" is an official
- * cipher name, but ssh.com support it and apparently aren't the
- * only people to do so, so we sigh and implement it anyway.
+ * Single DES in ssh2. "des-cbc" is marked as HISTORIC in
+ * draft-ietf-secsh-assignednumbers-04.txt, referring to
+ * FIPS-46-3. ("Single DES (i.e., DES) will be permitted
+ * for legacy systems only.") , but ssh.com support it and
+ * apparently aren't the only people to do so, so we sigh
+ * and implement it anyway.
*/
static const struct ssh2_cipher ssh_des_ssh2 = {
des_make_context, des3_free_context, des3_iv, des_key,
8, 56, "single-DES"
};
+static const struct ssh2_cipher ssh_des_sshcom_ssh2 = {
+ des_make_context, des3_free_context, des3_iv, des_key,
+ des_ssh2_encrypt_blk, des_ssh2_decrypt_blk,
+ "des-cbc@ssh.com",
+ 8, 56, "single-DES"
+};
+
static const struct ssh2_cipher *const des3_list[] = {
&ssh_3des_ssh2
};
};
static const struct ssh2_cipher *const des_list[] = {
- &ssh_des_ssh2
+ &ssh_des_ssh2,
+ &ssh_des_sshcom_ssh2
};
const struct ssh2_ciphers ssh2_des = {
- sizeof(des3_list) / sizeof(*des_list),
+ sizeof(des_list) / sizeof(*des_list),
des_list
};