(verify_mic_des3): fix 3des verify_mic to conform to rfc (and mit
kerberos), provide backward compat hook git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@11624 ec53bebd-3082-4978-b11e-865c3cabbd6b
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		| @@ -1,5 +1,5 @@ | ||||
| /* | ||||
|  * Copyright (c) 1997 - 2001 Kungliga Tekniska H<>gskolan | ||||
|  * Copyright (c) 1997 - 2003 Kungliga Tekniska H<>gskolan | ||||
|  * (Royal Institute of Technology, Stockholm, Sweden).  | ||||
|  * All rights reserved.  | ||||
|  * | ||||
| @@ -141,6 +141,7 @@ verify_mic_des3 | ||||
|   int cmp; | ||||
|   Checksum csum; | ||||
|   char *tmp; | ||||
|   char ivec[8]; | ||||
|    | ||||
|   p = token_buffer->value; | ||||
|   ret = gssapi_krb5_verify_header (&p, | ||||
| @@ -167,11 +168,15 @@ verify_mic_des3 | ||||
|   } | ||||
|  | ||||
|   /* verify sequence number */ | ||||
|   if (context_handle->more_flags & COMPAT_OLD_DES3) | ||||
|       memset(ivec, 0, 8); | ||||
|   else | ||||
|       memcpy(ivec, p + 8, 8); | ||||
|  | ||||
|   ret = krb5_decrypt (gssapi_krb5_context, | ||||
| 		      crypto, | ||||
| 		      KRB5_KU_USAGE_SEQ, | ||||
| 		      p, 8, &seq_data); | ||||
|   ret = krb5_decrypt_ivec (gssapi_krb5_context, | ||||
| 			   crypto, | ||||
| 			   KRB5_KU_USAGE_SEQ, | ||||
| 			   p, 8, &seq_data, ivec); | ||||
|   if (ret) { | ||||
|       gssapi_krb5_set_error_string (); | ||||
|       krb5_crypto_destroy (gssapi_krb5_context, crypto); | ||||
|   | ||||
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