selftest: mitm-s4u2self: use zlib for CRC32_checksum calc

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14202

Signed-off-by: Isaac Boukris <iboukris@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

diff --git a/source4/torture/krb5/kdc-canon-heimdal.c b/source4/torture/krb5/kdc-canon-heimdal.c
index dffebd7403807084ee9d2b95ff56cc845b6f2d57..8dc3e24a8d53b15a400d1da2b18dc1e00e75d655 100644 (file)
--- a/source4/torture/krb5/kdc-canon-heimdal.c
+++ b/source4/torture/krb5/kdc-canon-heimdal.c
@@ -33,6 +33,7 @@
 #include "auth/auth_sam_reply.h"
 #include "auth/gensec/gensec.h"
 #include "param/param.h"
+#include "zlib.h"
 
 #define TEST_CANONICALIZE     0x0000001
 #define TEST_ENTERPRISE       0x0000002
@@ -214,6 +215,17 @@ static bool test_accept_ticket(struct torture_context *tctx,
        return true;
 }
 
+static void
+zCRC32_checksum(const void *data,
+               size_t len,
+               Checksum *C)
+{
+       uint32_t *crc = C->checksum.data;
+       *crc = ~(crc32(0xffffffff, data, len));
+       C->checksum.length = 4;
+       C->cksumtype = 1;
+}
+
 krb5_error_code
 _krb5_s4u2self_to_checksumdata(krb5_context context,
                               const PA_S4U2Self *self,
@@ -252,11 +264,7 @@ static bool change_for_user_principal(struct torture_krb5_context *test_context,
        torture_assert_int_equal(test_context->tctx,
                                 _krb5_s4u2self_to_checksumdata(k5_ctx, &mod_self, &cksum_data),
                                 0, "_krb5_s4u2self_to_checksumdata() failed");
-       torture_assert_int_equal(test_context->tctx,
-                                krb5_create_checksum(k5_ctx, NULL, KRB5_KU_OTHER_CKSUM,
-                                                     CKSUMTYPE_CRC32, cksum_data.data,
-                                                     cksum_data.length, &mod_self.cksum),
-                                0, "krb5_create_checksum() failed");
+       zCRC32_checksum(cksum_data.data, cksum_data.length, &mod_self.cksum);
 
        ASN1_MALLOC_ENCODE(PA_S4U2Self, for_user->padata_value.data, for_user->padata_value.length,
                           &mod_self, &used, ret);
@@ -270,7 +278,6 @@ static bool change_for_user_principal(struct torture_krb5_context *test_context,
 
        free_PA_S4U2Self(&self);
        krb5_data_free(&cksum_data);
-       free_Checksum(&mod_self.cksum);
 
        return true;
 }