From bb89afd7c59deea855d2818fe36ef7472b4abf2e Mon Sep 17 00:00:00 2001

From: Nathaniel McCallum <npmccallum@redhat.com>

Date: Mon, 9 Sep 2013 14:23:56 -0400

Subject: [PATCH 05/13] Add ASN.1 codec for KKDCP's KDC-PROXY-MESSAGE

Handle encoding and decoding [MS-KKDCP] proxy messages, including

handling of the additional length bytes.  Early versions of [MS-KKDCP]

incorrectly omit that the size of the proxied message is prepended to

the proxied message, as it is when we're using plain TCP, before

encoding the proxy-message structure.  This is fixed at least as of

version 2.1 of the spec.

[nalin@redhat.com: add tests]

ticket: 7929

---

 src/include/k5-int.h                 | 13 +++++++++++++

 src/lib/krb5/asn.1/asn1_k_encode.c   | 14 ++++++++++++++

 src/lib/krb5/krb/kfree.c             | 10 ++++++++++

 src/lib/krb5/libkrb5.exports         |  3 +++

 src/tests/asn.1/krb5_decode_test.c   | 18 ++++++++++++++++++

 src/tests/asn.1/krb5_encode_test.c   |  8 ++++++++

 src/tests/asn.1/ktest.c              | 23 ++++++++++++++++++++++

 src/tests/asn.1/ktest.h              |  5 +++++

 src/tests/asn.1/ktest_equal.c        | 12 ++++++++++++

 src/tests/asn.1/ktest_equal.h        |  3 +++

 src/tests/asn.1/reference_encode.out |  1 +

 src/tests/asn.1/trval_reference.out  | 37 ++++++++++++++++++++++++++++++++++++

 12 files changed, 147 insertions(+)

diff --git a/src/include/k5-int.h b/src/include/k5-int.h

index 096cd14..8f039ee 100644

--- a/src/include/k5-int.h

+++ b/src/include/k5-int.h

@@ -518,6 +518,12 @@ typedef struct _krb5_pa_otp_req {

     krb5_data vendor;

 } krb5_pa_otp_req;

+typedef struct _krb5_kkdcp_message {

+    krb5_data kerb_message;

+    krb5_data target_domain;

+    krb5_int32 dclocator_hint;

+} krb5_kkdcp_message;

+

 #include <stdlib.h>

 #include <string.h>

@@ -898,6 +904,7 @@ void k5_free_otp_tokeninfo(krb5_context context, krb5_otp_tokeninfo *val);

 void k5_free_pa_otp_challenge(krb5_context context,

                               krb5_pa_otp_challenge *val);

 void k5_free_pa_otp_req(krb5_context context, krb5_pa_otp_req *val);

+void k5_free_kkdcp_message(krb5_context context, krb5_kkdcp_message *val);

 /* #include "krb5/wordsize.h" -- comes in through base-defs.h. */

 #include "com_err.h"

@@ -1438,6 +1445,9 @@ encode_krb5_pa_otp_req(const krb5_pa_otp_req *, krb5_data **);

 krb5_error_code

 encode_krb5_pa_otp_enc_req(const krb5_data *, krb5_data **);

+krb5_error_code

+encode_krb5_kkdcp_message(const krb5_kkdcp_message *, krb5_data **);

+

 /*************************************************************************

  * End of prototypes for krb5_encode.c

  *************************************************************************/

@@ -1608,6 +1618,9 @@ decode_krb5_pa_otp_req(const krb5_data *, krb5_pa_otp_req **);

 krb5_error_code

 decode_krb5_pa_otp_enc_req(const krb5_data *, krb5_data **);

+krb5_error_code

+decode_krb5_kkdcp_message(const krb5_data *, krb5_kkdcp_message **);

+

 struct _krb5_key_data;          /* kdb.h */

 struct ldap_seqof_key_data {

diff --git a/src/lib/krb5/asn.1/asn1_k_encode.c b/src/lib/krb5/asn.1/asn1_k_encode.c

index 7b9179d..4dc49c2 100644

--- a/src/lib/krb5/asn.1/asn1_k_encode.c

+++ b/src/lib/krb5/asn.1/asn1_k_encode.c

@@ -1711,3 +1711,17 @@ static const struct atype_info *pa_otp_enc_req_fields[] = {

 };

 DEFSEQTYPE(pa_otp_enc_req, krb5_data, pa_otp_enc_req_fields);

 MAKE_CODEC(krb5_pa_otp_enc_req, pa_otp_enc_req);

+

+DEFFIELD(kkdcp_message_0, krb5_kkdcp_message,

+         kerb_message, 0, ostring_data);

+DEFFIELD(kkdcp_message_1, krb5_kkdcp_message,

+         target_domain, 1, opt_gstring_data);

+DEFFIELD(kkdcp_message_2, krb5_kkdcp_message,

+         dclocator_hint, 2, opt_int32);

+static const struct atype_info *kkdcp_message_fields[] = {

+    &k5_atype_kkdcp_message_0, &k5_atype_kkdcp_message_1,

+    &k5_atype_kkdcp_message_2

+};

+DEFSEQTYPE(kkdcp_message, krb5_kkdcp_message,

+           kkdcp_message_fields);

+MAKE_CODEC(krb5_kkdcp_message, kkdcp_message);

diff --git a/src/lib/krb5/krb/kfree.c b/src/lib/krb5/krb/kfree.c

index 32b2151..f86c619 100644

--- a/src/lib/krb5/krb/kfree.c

+++ b/src/lib/krb5/krb/kfree.c

@@ -821,3 +821,13 @@ k5_free_pa_otp_req(krb5_context context, krb5_pa_otp_req *val)

     free(val->vendor.data);

     free(val);

 }

+

+void

+k5_free_kkdcp_message(krb5_context context, krb5_kkdcp_message *val)

+{

+    if (val == NULL)

+        return;

+    free(val->target_domain.data);

+    free(val->kerb_message.data);

+    free(val);

+}

diff --git a/src/lib/krb5/libkrb5.exports b/src/lib/krb5/libkrb5.exports

index 863ec02..2d0852d 100644

--- a/src/lib/krb5/libkrb5.exports

+++ b/src/lib/krb5/libkrb5.exports

@@ -25,6 +25,7 @@ decode_krb5_iakerb_finished

 decode_krb5_iakerb_header

 decode_krb5_kdc_req_body

 decode_krb5_otp_tokeninfo

+decode_krb5_kkdcp_message

 decode_krb5_pa_enc_ts

 decode_krb5_pa_for_user

 decode_krb5_pa_fx_fast_reply

@@ -72,6 +73,7 @@ encode_krb5_iakerb_finished

 encode_krb5_iakerb_header

 encode_krb5_kdc_req_body

 encode_krb5_otp_tokeninfo

+encode_krb5_kkdcp_message

 encode_krb5_pa_enc_ts

 encode_krb5_pa_for_user

 encode_krb5_pa_fx_fast_reply

@@ -113,6 +115,7 @@ k5_expand_path_tokens

 k5_expand_path_tokens_extra

 k5_free_algorithm_identifier

 k5_free_otp_tokeninfo

+k5_free_kkdcp_message

 k5_free_pa_otp_challenge

 k5_free_pa_otp_req

 k5_free_serverlist

diff --git a/src/tests/asn.1/krb5_decode_test.c b/src/tests/asn.1/krb5_decode_test.c

index 8719978..f12bb16 100644

--- a/src/tests/asn.1/krb5_decode_test.c

+++ b/src/tests/asn.1/krb5_decode_test.c

@@ -54,6 +54,8 @@ static void ktest_free_reply_key_pack(krb5_context context,

 static void ktest_free_reply_key_pack_draft9(krb5_context context,

                                              krb5_reply_key_pack_draft9 *val);

 #endif

+static void ktest_free_kkdcp_message(krb5_context context,

+                                     krb5_kkdcp_message *val);

 int main(argc, argv)

     int argc;

@@ -1077,6 +1079,13 @@ int main(argc, argv)

         ktest_empty_data(&ref;;

     }

+    /****************************************************************/

+    /* decode_krb5_kkdcp_message */

+    {

+        setup(krb5_kkdcp_message,ktest_make_sample_kkdcp_message);

+        decode_run("kkdcp_message","","30 82 01 FC A0 82 01 EC 04 82 01 E8 6A 82 01 E4 30 82 01 E0 A1 03 02 01 05 A2 03 02 01 0A A3 26 30 24 30 10 A1 03 02 01 0D A2 09 04 07 70 61 2D 64 61 74 61 30 10 A1 03 02 01 0D A2 09 04 07 70 61 2D 64 61 74 61 A4 82 01 AA 30 82 01 A6 A0 07 03 05 00 FE DC BA 98 A1 1A 30 18 A0 03 02 01 01 A1 11 30 0F 1B 06 68 66 74 73 61 69 1B 05 65 78 74 72 61 A2 10 1B 0E 41 54 48 45 4E 41 2E 4D 49 54 2E 45 44 55 A3 1A 30 18 A0 03 02 01 01 A1 11 30 0F 1B 06 68 66 74 73 61 69 1B 05 65 78 74 72 61 A4 11 18 0F 31 39 39 34 30 36 31 30 30 36 30 33 31 37 5A A5 11 18 0F 31 39 39 34 30 36 31 30 30 36 30 33 31 37 5A A6 11 18 0F 31 39 39 34 30 36 31 30 30 36 30 33 31 37 5A A7 03 02 01 2A A8 08 30 06 02 01 00 02 01 01 A9 20 30 1E 30 0D A0 03 02 01 02 A1 06 04 04 12 D0 00 23 30 0D A0 03 02 01 02 A1 06 04 04 12 D0 00 23 AA 25 30 23 A0 03 02 01 00 A1 03 02 01 05 A2 17 04 15 6B 72 62 41 53 4E 2E 31 20 74 65 73 74 20 6D 65 73 73 61 67 65 AB 81 BF 30 81 BC 61 5C 30 5A A0 03 02 01 05 A1 10 1B 0E 41 54 48 45 4E 41 2E 4D 49 54 2E 45 44 55 A2 1A 30 18 A0 03 02 01 01 A1 11 30 0F 1B 06 68 66 74 73 61 69 1B 05 65 78 74 72 61 A3 25 30 23 A0 03 02 01 00 A1 03 02 01 05 A2 17 04 15 6B 72 62 41 53 4E 2E 31 20 74 65 73 74 20 6D 65 73 73 61 67 65 61 5C 30 5A A0 03 02 01 05 A1 10 1B 0E 41 54 48 45 4E 41 2E 4D 49 54 2E 45 44 55 A2 1A 30 18 A0 03 02 01 01 A1 11 30 0F 1B 06 68 66 74 73 61 69 1B 05 65 78 74 72 61 A3 25 30 23 A0 03 02 01 00 A1 03 02 01 05 A2 17 04 15 6B 72 62 41 53 4E 2E 31 20 74 65 73 74 20 6D 65 73 73 61 67 65 A1 0A 1B 08 6B 72 62 35 64 61 74 61",decode_krb5_kkdcp_message,ktest_equal_kkdcp_message,ktest_free_kkdcp_message);

+    }

+

 #ifndef DISABLE_PKINIT

     /****************************************************************/

@@ -1262,3 +1271,12 @@ ktest_free_reply_key_pack_draft9(krb5_context context,

 }

 #endif /* not DISABLE_PKINIT */

+

+static void

+ktest_free_kkdcp_message(krb5_context context,

+                         krb5_kkdcp_message *val)

+{

+    if (val)

+        ktest_empty_kkdcp_message(val);

+    free(val);

+}

diff --git a/src/tests/asn.1/krb5_encode_test.c b/src/tests/asn.1/krb5_encode_test.c

index 638f6fe..3ba8684 100644

--- a/src/tests/asn.1/krb5_encode_test.c

+++ b/src/tests/asn.1/krb5_encode_test.c

@@ -734,6 +734,14 @@ main(argc, argv)

         encode_run(d, "pa_otp_enc_req", "", encode_krb5_pa_otp_enc_req);

         ktest_empty_data(&d);

     }

+    /****************************************************************/

+    /* encode_krb5_kkdcp_message */

+    {

+        krb5_kkdcp_message info;

+        ktest_make_sample_kkdcp_message(&info;;

+        encode_run(info, "kkdcp_message", "", encode_krb5_kkdcp_message);

+        ktest_empty_kkdcp_message(&info;;

+    }

 #ifndef DISABLE_PKINIT

     /****************************************************************/

     /* encode_krb5_pa_pk_as_req */

diff --git a/src/tests/asn.1/ktest.c b/src/tests/asn.1/ktest.c

index aa41fd8..4ce9f70 100644

--- a/src/tests/asn.1/ktest.c

+++ b/src/tests/asn.1/ktest.c

@@ -933,6 +933,21 @@ ktest_make_sample_ldap_seqof_key_data(ldap_seqof_key_data *p)

 }

 #endif

+void

+ktest_make_sample_kkdcp_message(krb5_kkdcp_message *p)

+{

+    krb5_kdc_req req;

+    krb5_data *message;

+

+    ktest_make_sample_kdc_req(&req;;

+    req.msg_type = KRB5_AS_REQ;

+    encode_krb5_as_req(&req, &message);

+    p->kerb_message = *message;

+    free(message);

+    ktest_empty_kdc_req(&req;;

+    ktest_make_sample_data(&(p->target_domain));

+    p->dclocator_hint = 0;

+}

 /****************************************************************/

 /* destructors */

@@ -1731,3 +1746,11 @@ ktest_empty_ldap_seqof_key_data(krb5_context ctx, ldap_seqof_key_data *p)

     free(p->key_data);

 }

 #endif

+

+void

+ktest_empty_kkdcp_message(krb5_kkdcp_message *p)

+{

+    ktest_empty_data(&p->kerb_message);

+    ktest_empty_data(&p->target_domain);

+    p->dclocator_hint = -1;

+}

diff --git a/src/tests/asn.1/ktest.h b/src/tests/asn.1/ktest.h

index 67a6c69..a9ebb77 100644

--- a/src/tests/asn.1/ktest.h

+++ b/src/tests/asn.1/ktest.h

@@ -119,6 +119,9 @@ void ktest_make_sample_pkinit_supp_pub_info(krb5_pkinit_supp_pub_info *p);

 #ifdef ENABLE_LDAP

 void ktest_make_sample_ldap_seqof_key_data(ldap_seqof_key_data *p);

 #endif

+

+void ktest_make_sample_kkdcp_message(krb5_kkdcp_message *p);

+

 /*----------------------------------------------------------------------*/

 void ktest_empty_authorization_data(krb5_authdata **ad);

@@ -200,6 +203,8 @@ void ktest_empty_pkinit_supp_pub_info(krb5_pkinit_supp_pub_info *p);

 void ktest_empty_ldap_seqof_key_data(krb5_context, ldap_seqof_key_data *p);

 #endif

+void ktest_empty_kkdcp_message(krb5_kkdcp_message *p);

+

 extern krb5_context test_context;

 extern char *sample_principal_name;

diff --git a/src/tests/asn.1/ktest_equal.c b/src/tests/asn.1/ktest_equal.c

index 4e71242..39c35b5 100644

--- a/src/tests/asn.1/ktest_equal.c

+++ b/src/tests/asn.1/ktest_equal.c

@@ -1039,3 +1039,15 @@ ktest_equal_reply_key_pack_draft9(krb5_reply_key_pack_draft9 *ref,

 }

 #endif /* not DISABLE_PKINIT */

+

+int

+ktest_equal_kkdcp_message(krb5_kkdcp_message *ref, krb5_kkdcp_message *var)

+{

+    int p = TRUE;

+    if (ref == var) return TRUE;

+    else if (ref == NULL || var == NULL) return FALSE;

+    p = p && data_eq(ref->kerb_message, var->kerb_message);

+    p = p && data_eq(ref->target_domain, var->target_domain);

+    p = p && (ref->dclocator_hint == var->dclocator_hint);

+    return p;

+}

diff --git a/src/tests/asn.1/ktest_equal.h b/src/tests/asn.1/ktest_equal.h

index e75f86a..491653f 100644

--- a/src/tests/asn.1/ktest_equal.h

+++ b/src/tests/asn.1/ktest_equal.h

@@ -145,4 +145,7 @@ generic(ktest_equal_reply_key_pack, krb5_reply_key_pack);

 generic(ktest_equal_reply_key_pack_draft9, krb5_reply_key_pack_draft9);

 #endif /* not DISABLE_PKINIT */

+int ktest_equal_kkdcp_message(krb5_kkdcp_message *ref,

+                              krb5_kkdcp_message *var);

+

 #endif

diff --git a/src/tests/asn.1/reference_encode.out b/src/tests/asn.1/reference_encode.out

index 315e25b..b737da3 100644

--- a/src/tests/asn.1/reference_encode.out

+++ b/src/tests/asn.1/reference_encode.out

@@ -68,3 +68,4 @@ encode_krb5_pa_otp_challenge: 30 81 A5 80 08 6D 61 78 6E 6F 6E 63 65 81 0B 74 65

 encode_krb5_pa_otp_req(optionals NULL): 30 2C 80 05 00 00 00 00 00 A2 23 A0 03 02 01 00 A1 03 02 01 05 A2 17 04 15 6B 72 62 41 53 4E 2E 31 20 74 65 73 74 20 6D 65 73 73 61 67 65

 encode_krb5_pa_otp_req: 30 81 B9 80 05 00 60 00 00 00 81 05 6E 6F 6E 63 65 A2 23 A0 03 02 01 00 A1 03 02 01 05 A2 17 04 15 6B 72 62 41 53 4E 2E 31 20 74 65 73 74 20 6D 65 73 73 61 67 65 A3 0B 06 09 60 86 48 01 65 03 04 02 01 84 02 03 E8 85 05 66 72 6F 67 73 86 0A 6D 79 66 69 72 73 74 70 69 6E 87 05 68 61 72 6B 21 88 0F 31 39 39 34 30 36 31 30 30 36 30 33 31 37 5A 89 03 33 34 36 8A 01 02 8B 09 79 6F 75 72 74 6F 6B 65 6E 8C 28 75 72 6E 3A 69 65 74 66 3A 70 61 72 61 6D 73 3A 78 6D 6C 3A 6E 73 3A 6B 65 79 70 72 6F 76 3A 70 73 6B 63 3A 68 6F 74 70 8D 0B 45 78 61 6D 70 6C 65 63 6F 72 70

 encode_krb5_pa_otp_enc_req: 30 0A 80 08 6B 72 62 35 64 61 74 61

+encode_krb5_kkdcp_message: 30 82 01 FC A0 82 01 EC 04 82 01 E8 6A 82 01 E4 30 82 01 E0 A1 03 02 01 05 A2 03 02 01 0A A3 26 30 24 30 10 A1 03 02 01 0D A2 09 04 07 70 61 2D 64 61 74 61 30 10 A1 03 02 01 0D A2 09 04 07 70 61 2D 64 61 74 61 A4 82 01 AA 30 82 01 A6 A0 07 03 05 00 FE DC BA 98 A1 1A 30 18 A0 03 02 01 01 A1 11 30 0F 1B 06 68 66 74 73 61 69 1B 05 65 78 74 72 61 A2 10 1B 0E 41 54 48 45 4E 41 2E 4D 49 54 2E 45 44 55 A3 1A 30 18 A0 03 02 01 01 A1 11 30 0F 1B 06 68 66 74 73 61 69 1B 05 65 78 74 72 61 A4 11 18 0F 31 39 39 34 30 36 31 30 30 36 30 33 31 37 5A A5 11 18 0F 31 39 39 34 30 36 31 30 30 36 30 33 31 37 5A A6 11 18 0F 31 39 39 34 30 36 31 30 30 36 30 33 31 37 5A A7 03 02 01 2A A8 08 30 06 02 01 00 02 01 01 A9 20 30 1E 30 0D A0 03 02 01 02 A1 06 04 04 12 D0 00 23 30 0D A0 03 02 01 02 A1 06 04 04 12 D0 00 23 AA 25 30 23 A0 03 02 01 00 A1 03 02 01 05 A2 17 04 15 6B 72 62 41 53 4E 2E 31 20 74 65 73 74 20 6D 65 73 73 61 67 65 AB 81 BF 30 81 BC 61 5C 30 5A A0 03 02 01 05 A1 10 1B 0E 41 54 48 45 4E 41 2E 4D 49 54 2E 45 44 55 A2 1A 30 18 A0 03 02 01 01 A1 11 30 0F 1B 06 68 66 74 73 61 69 1B 05 65 78 74 72 61 A3 25 30 23 A0 03 02 01 00 A1 03 02 01 05 A2 17 04 15 6B 72 62 41 53 4E 2E 31 20 74 65 73 74 20 6D 65 73 73 61 67 65 61 5C 30 5A A0 03 02 01 05 A1 10 1B 0E 41 54 48 45 4E 41 2E 4D 49 54 2E 45 44 55 A2 1A 30 18 A0 03 02 01 01 A1 11 30 0F 1B 06 68 66 74 73 61 69 1B 05 65 78 74 72 61 A3 25 30 23 A0 03 02 01 00 A1 03 02 01 05 A2 17 04 15 6B 72 62 41 53 4E 2E 31 20 74 65 73 74 20 6D 65 73 73 61 67 65 A1 0A 1B 08 6B 72 62 35 64 61 74 61

diff --git a/src/tests/asn.1/trval_reference.out b/src/tests/asn.1/trval_reference.out

index 461021e..599580c 100644

--- a/src/tests/asn.1/trval_reference.out

+++ b/src/tests/asn.1/trval_reference.out

@@ -1478,3 +1478,40 @@ encode_krb5_pa_otp_enc_req:

 [Sequence/Sequence Of]

 .  [0] <8>

       6b 72 62 35 64 61 74 61                             krb5data

+

+encode_krb5_kkdcp_message:

+

+[Sequence/Sequence Of]

+.  [0] [Octet String] <488>

+      6a 82 01 e4 30 82 01 e0 a1 03 02 01 05 a2 03 02     j...0...........

+      01 0a a3 26 30 24 30 10 a1 03 02 01 0d a2 09 04     ...&0$0.........

+      07 70 61 2d 64 61 74 61 30 10 a1 03 02 01 0d a2     .pa-data0.......

+      09 04 07 70 61 2d 64 61 74 61 a4 82 01 aa 30 82     ...pa-data....0.

+      01 a6 a0 07 03 05 00 fe dc ba 98 a1 1a 30 18 a0     .............0..

+      03 02 01 01 a1 11 30 0f 1b 06 68 66 74 73 61 69     ......0...hftsai

+      1b 05 65 78 74 72 61 a2 10 1b 0e 41 54 48 45 4e     ..extra....ATHEN

+      41 2e 4d 49 54 2e 45 44 55 a3 1a 30 18 a0 03 02     A.MIT.EDU..0....

+      01 01 a1 11 30 0f 1b 06 68 66 74 73 61 69 1b 05     ....0...hftsai..

+      65 78 74 72 61 a4 11 18 0f 31 39 39 34 30 36 31     extra....1994061

+      30 30 36 30 33 31 37 5a a5 11 18 0f 31 39 39 34     0060317Z....1994

+      30 36 31 30 30 36 30 33 31 37 5a a6 11 18 0f 31     0610060317Z....1

+      39 39 34 30 36 31 30 30 36 30 33 31 37 5a a7 03     9940610060317Z..

+      02 01 2a a8 08 30 06 02 01 00 02 01 01 a9 20 30     ..*..0........ 0

+      1e 30 0d a0 03 02 01 02 a1 06 04 04 12 d0 00 23     .0.............#

+      30 0d a0 03 02 01 02 a1 06 04 04 12 d0 00 23 aa     0.............#.

+      25 30 23 a0 03 02 01 00 a1 03 02 01 05 a2 17 04     %0#.............

+      15 6b 72 62 41 53 4e 2e 31 20 74 65 73 74 20 6d     .krbASN.1 test m

+      65 73 73 61 67 65 ab 81 bf 30 81 bc 61 5c 30 5a     essage...0..a\0Z

+      a0 03 02 01 05 a1 10 1b 0e 41 54 48 45 4e 41 2e     .........ATHENA.

+      4d 49 54 2e 45 44 55 a2 1a 30 18 a0 03 02 01 01     MIT.EDU..0......

+      a1 11 30 0f 1b 06 68 66 74 73 61 69 1b 05 65 78     ..0...hftsai..ex

+      74 72 61 a3 25 30 23 a0 03 02 01 00 a1 03 02 01     tra.%0#.........

+      05 a2 17 04 15 6b 72 62 41 53 4e 2e 31 20 74 65     .....krbASN.1 te

+      73 74 20 6d 65 73 73 61 67 65 61 5c 30 5a a0 03     st messagea\0Z..

+      02 01 05 a1 10 1b 0e 41 54 48 45 4e 41 2e 4d 49     .......ATHENA.MI

+      54 2e 45 44 55 a2 1a 30 18 a0 03 02 01 01 a1 11     T.EDU..0........

+      30 0f 1b 06 68 66 74 73 61 69 1b 05 65 78 74 72     0...hftsai..extr

+      61 a3 25 30 23 a0 03 02 01 00 a1 03 02 01 05 a2     a.%0#...........

+      17 04 15 6b 72 62 41 53 4e 2e 31 20 74 65 73 74     ...krbASN.1 test

+      20 6d 65 73 73 61 67 65                              message

+.  [1] [General string] "krb5data"

-- 

2.1.0