7193a60cda
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@1919 ec53bebd-3082-4978-b11e-865c3cabbd6b
80 lines
1.9 KiB
C
80 lines
1.9 KiB
C
#include "gssapi_locl.h"
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RCSID("$Id$");
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static krb5_error_code
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encode_om_uint32(OM_uint32 n, u_char *p)
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{
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p[0] = (n >> 0) & 0xFF;
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p[1] = (n >> 8) & 0xFF;
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p[2] = (n >> 16) & 0xFF;
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p[3] = (n >> 24) & 0xFF;
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return 0;
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}
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static krb5_error_code
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hash_input_chan_bindings (const gss_channel_bindings_t b,
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u_char *p)
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{
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u_char num[4];
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struct md5 md5;
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md5_init(&md5);
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encode_om_uint32 (b->initiator_addrtype, num);
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md5_update (&md5, num, sizeof(num));
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encode_om_uint32 (b->initiator_address.length, num);
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md5_update (&md5, num, sizeof(num));
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if (b->initiator_address.length)
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md5_update (&md5,
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b->initiator_address.value,
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b->initiator_address.length);
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encode_om_uint32 (b->acceptor_addrtype, num);
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md5_update (&md5, num, sizeof(num));
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encode_om_uint32 (b->acceptor_address.length, num);
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md5_update (&md5, num, sizeof(num));
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if (b->acceptor_address.length)
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md5_update (&md5,
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b->acceptor_address.value,
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b->acceptor_address.length);
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encode_om_uint32 (b->application_data.length, num);
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md5_update (&md5, num, sizeof(num));
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if (b->application_data.length)
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md5_update (&md5,
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b->application_data.value,
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b->application_data.length);
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md5_finito (&md5, p);
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return 0;
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}
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krb5_error_code
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gssapi_krb5_create_8003_checksum (
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const gss_channel_bindings_t input_chan_bindings,
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OM_uint32 flags,
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Checksum *result)
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{
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u_char *p;
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u_int32_t val;
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result->cksumtype = 0x8003;
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result->checksum.length = 24;
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result->checksum.data = malloc (result->checksum.length);
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if (result->checksum.data == NULL)
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return ENOMEM;
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p = result->checksum.data;
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encode_om_uint32 (16, p);
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p += 4;
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if (input_chan_bindings == GSS_C_NO_CHANNEL_BINDINGS) {
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memset (p, 0, 16);
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} else {
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hash_input_chan_bindings (input_chan_bindings, p);
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}
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p += 16;
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encode_om_uint32 (flags, p);
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p += 4;
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if (p - (u_char *)result->checksum.data != result->checksum.length)
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abort ();
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return 0;
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}
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