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34 #include <krb5_locl.h>
36 RCSID("$Id: mk_priv.c,v 1.31 2002/09/04 16:26:04 joda Exp $");
40 krb5_mk_priv(krb5_context context,
41 krb5_auth_context auth_context,
42 const krb5_data *userdata,
44 /*krb5_replay_data*/ void *outdata)
59 if (auth_context->local_subkey)
60 key = auth_context->local_subkey;
61 else if (auth_context->remote_subkey)
62 key = auth_context->remote_subkey;
64 key = auth_context->keyblock;
66 krb5_us_timeofday (context, &sec, &usec);
68 part.user_data = *userdata;
70 part.timestamp = &sec2;
73 if (auth_context->flags & KRB5_AUTH_CONTEXT_DO_SEQUENCE) {
74 tmp_seq = auth_context->local_seqnumber;
75 part.seq_number = &tmp_seq;
77 part.seq_number = NULL;
80 part.s_address = auth_context->local_address;
81 part.r_address = auth_context->remote_address;
83 krb5_data_zero (&s.enc_part.cipher);
85 ASN1_MALLOC_ENCODE(EncKrbPrivPart, buf, buf_size, &part, &len, ret);
90 s.msg_type = krb_priv;
91 s.enc_part.etype = key->keytype;
92 s.enc_part.kvno = NULL;
94 ret = krb5_crypto_init(context, key, 0, &crypto);
99 ret = krb5_encrypt (context,
102 buf + buf_size - len,
105 krb5_crypto_destroy(context, crypto);
113 ASN1_MALLOC_ENCODE(KRB_PRIV, buf, buf_size, &s, &len, ret);
117 krb5_data_free (&s.enc_part.cipher);
119 ret = krb5_data_copy(outbuf, buf + buf_size - len, len);
121 krb5_set_error_string (context, "malloc: out of memory");
126 if (auth_context->flags & KRB5_AUTH_CONTEXT_DO_SEQUENCE)
127 auth_context->local_seqnumber =
128 (auth_context->local_seqnumber + 1) & 0xFFFFFFFF;
133 krb5_data_free (&s.enc_part.cipher);