diff options
Diffstat (limited to 'crypto/kerberosIV/appl/kauth/encdata.c')
-rw-r--r-- | crypto/kerberosIV/appl/kauth/encdata.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/crypto/kerberosIV/appl/kauth/encdata.c b/crypto/kerberosIV/appl/kauth/encdata.c new file mode 100644 index 0000000..800326a --- /dev/null +++ b/crypto/kerberosIV/appl/kauth/encdata.c @@ -0,0 +1,101 @@ +/* + * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Kungliga Tekniska + * Högskolan and its contributors. + * + * 4. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include "kauth.h" + +RCSID("$Id: encdata.c,v 1.9 1997/04/01 08:17:30 joda Exp $"); + +int +write_encrypted (int fd, void *buf, size_t len, des_key_schedule schedule, + des_cblock *session, struct sockaddr_in *me, + struct sockaddr_in *him) +{ + void *outbuf; + int32_t outlen, l; + int i; + unsigned char tmp[4]; + + outbuf = malloc(len + 30); + if (outbuf == NULL) + return -1; + outlen = krb_mk_priv (buf, outbuf, len, schedule, session, me, him); + if (outlen < 0) { + free(outbuf); + return -1; + } + l = outlen; + for(i = 3; i >= 0; i--, l = l >> 8) + tmp[i] = l & 0xff; + if (krb_net_write (fd, tmp, 4) != 4 || + krb_net_write (fd, outbuf, outlen) != outlen) { + free(outbuf); + return -1; + } + + free(outbuf); + return 0; +} + + +int +read_encrypted (int fd, void *buf, size_t len, void **ret, + des_key_schedule schedule, des_cblock *session, + struct sockaddr_in *him, struct sockaddr_in *me) +{ + int status; + int32_t l; + MSG_DAT msg; + unsigned char tmp[4]; + + l = krb_net_read (fd, tmp, 4); + if (l != 4) + return l; + l = (tmp[0] << 24) | (tmp[1] << 16) | (tmp[2] << 8) | tmp[3]; + if (l > len) + return -1; + if (krb_net_read (fd, buf, l) != l) + return -1; + status = krb_rd_priv (buf, l, schedule, session, him, me, &msg); + if (status != RD_AP_OK) { + fprintf (stderr, "read_encrypted: %s\n", + krb_get_err_text(status)); + return -1; + } + *ret = msg.app_data; + return msg.app_length; +} |