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mk_rep.c (78527) mk_rep.c (103423)
1/*
1/*
2 * Copyright (c) 1997 - 2001 Kungliga Tekniska H�gskolan
2 * Copyright (c) 1997 - 2002 Kungliga Tekniska H�gskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright

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28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#include <krb5_locl.h>
35
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright

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28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#include <krb5_locl.h>
35
36RCSID("$Id: mk_rep.c,v 1.19 2001/05/14 06:14:49 assar Exp $");
36RCSID("$Id: mk_rep.c,v 1.20 2002/09/04 16:26:05 joda Exp $");
37
38krb5_error_code
39krb5_mk_rep(krb5_context context,
40 krb5_auth_context auth_context,
41 krb5_data *outbuf)
42{
43 krb5_error_code ret;
44 AP_REP ap;

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67 }
68 *(body.seq_number) = auth_context->local_seqnumber;
69 } else
70 body.seq_number = NULL;
71
72 ap.enc_part.etype = auth_context->keyblock->keytype;
73 ap.enc_part.kvno = NULL;
74
37
38krb5_error_code
39krb5_mk_rep(krb5_context context,
40 krb5_auth_context auth_context,
41 krb5_data *outbuf)
42{
43 krb5_error_code ret;
44 AP_REP ap;

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67 }
68 *(body.seq_number) = auth_context->local_seqnumber;
69 } else
70 body.seq_number = NULL;
71
72 ap.enc_part.etype = auth_context->keyblock->keytype;
73 ap.enc_part.kvno = NULL;
74
75 buf_size = length_EncAPRepPart(&body);
76 buf = malloc (buf_size);
77 if (buf == NULL) {
78 free_EncAPRepPart (&body);
79 krb5_set_error_string (context, "malloc: out of memory");
80 return ENOMEM;
81 }
82
83 ret = krb5_encode_EncAPRepPart (context,
84 buf + buf_size - 1,
85 buf_size,
86 &body,
87 &len);
88
75 ASN1_MALLOC_ENCODE(EncAPRepPart, buf, buf_size, &body, &len, ret);
89 free_EncAPRepPart (&body);
76 free_EncAPRepPart (&body);
77 if(ret)
78 return ret;
90 ret = krb5_crypto_init(context, auth_context->keyblock,
91 0 /* ap.enc_part.etype */, &crypto);
92 if (ret) {
93 free (buf);
94 return ret;
95 }
96 ret = krb5_encrypt (context,
97 crypto,
98 KRB5_KU_AP_REQ_ENC_PART,
99 buf + buf_size - len,
100 len,
101 &ap.enc_part.cipher);
102 krb5_crypto_destroy(context, crypto);
103 if (ret) {
104 free(buf);
105 return ret;
106 }
107
79 ret = krb5_crypto_init(context, auth_context->keyblock,
80 0 /* ap.enc_part.etype */, &crypto);
81 if (ret) {
82 free (buf);
83 return ret;
84 }
85 ret = krb5_encrypt (context,
86 crypto,
87 KRB5_KU_AP_REQ_ENC_PART,
88 buf + buf_size - len,
89 len,
90 &ap.enc_part.cipher);
91 krb5_crypto_destroy(context, crypto);
92 if (ret) {
93 free(buf);
94 return ret;
95 }
96
108 buf_size = length_AP_REP(&ap);
109 buf = realloc(buf, buf_size);
110 if(buf == NULL) {
111 free_AP_REP (&ap);
112 krb5_set_error_string (context, "malloc: out of memory");
113 return ENOMEM;
114 }
115 ret = encode_AP_REP (buf + buf_size - 1, buf_size, &ap, &len);
116
97 ASN1_MALLOC_ENCODE(AP_REP, outbuf->data, outbuf->length, &ap, &len, ret);
117 free_AP_REP (&ap);
98 free_AP_REP (&ap);
118
119 if(len != buf_size)
120 krb5_abortx(context, "krb5_mk_rep: encoded length != calculated length");
121 outbuf->data = buf;
122 outbuf->length = len;
123 return 0;
99 return ret;
124}
100}