diff --git a/src/crypto.c b/src/crypto.c
index fed8ab3..057d303 100644
--- a/src/crypto.c
+++ b/src/crypto.c
@@ -293,11 +293,13 @@ int sqlite3_rekey(sqlite3 *db, const void *pKey, int nKey) {
         rc = sqlite3BtreeBeginTrans(pDb->pBt, 1); /* begin write transaction */
         rc = sqlite3PagerPagecount(pPager, &page_count);
         for(pgno = 1; rc == SQLITE_OK && pgno <= page_count; pgno++) { /* pgno's start at 1 see pager.c:pagerAcquire */
-          rc = sqlite3PagerGet(pPager, pgno, &page);
-          if(rc == SQLITE_OK) { /* write page see pager_incr_changecounter for example */
-            rc = sqlite3PagerWrite(page);
-            if(rc == SQLITE_OK) {
-              sqlite3PagerUnref(page);
+          if(!sqlite3pager_is_mj_pgno(pPager, pgno)) { /* skip this page (see pager.c:pagerAcquire for reasoning) */
+            rc = sqlite3PagerGet(pPager, pgno, &page);
+            if(rc == SQLITE_OK) { /* write page see pager_incr_changecounter for example */
+              rc = sqlite3PagerWrite(page);
+              if(rc == SQLITE_OK) {
+                sqlite3PagerUnref(page);
+              } 
             } 
           } 
         }
diff --git a/src/pager.c b/src/pager.c
index e39fd64..e15893d 100644
--- a/src/pager.c
+++ b/src/pager.c
@@ -5363,11 +5363,13 @@ i64 sqlite3PagerJournalSizeLimit(Pager *pPager, i64 iLimit){
 
 /* BEGIN CRYPTO */
 #ifdef SQLITE_HAS_CODEC
-
 int sqlite3pager_get_codec(Pager *pPager, void **ctx) {
   *ctx = pPager->pCodecArg;
 }
 
+int sqlite3pager_is_mj_pgno(Pager *pPager, Pgno pgno) {
+  return (PAGER_MJ_PGNO(pPager) == pgno) ? 1 : 0;
+}
 #endif
 /* END CRYPTO */
 
diff --git a/test/codec.test b/test/codec.test
index 3bbb8b9..e63a00b 100644
--- a/test/codec.test
+++ b/test/codec.test
@@ -78,5 +78,66 @@ do_test codec-1.5 {
   }
 } {1 {file is encrypted or is not a database}}
 
+# open using raw hex key
+do_test codec-1.6 {
+  db close
+  sqlite_orig db test.db
+  execsql {
+    PRAGMA key = "x'98483C6EB40B6C31A448C22A66DED3B5E5E8D5119CAC8327B655C8B5C4836489'";
+    SELECT * from t1;
+  }
+} {test1 test2}
+
+# test invalid hex key fails
+do_test codec-1.7 {
+  db close
+  sqlite_orig db test.db
+  catchsql {
+    PRAGMA key = "x'98483C6EB40B6C31A448C22A66DED3B5E5E8D5119CAC8327B655C8B5C4836480'";
+    SELECT name FROM sqlite_master WHERE type='table';
+  }
+} {1 {file is encrypted or is not a database}}
+
+# test a large number of inserts in a transaction for multiple pages
+do_test codec-1.8 {
+  db close
+  sqlite_orig db test.db
+  execsql {
+    PRAGMA key = 'testkey';
+    BEGIN;
+    CREATE TABLE t2(a,b);
+  }
+  for {set i 1} {$i<=25000} {incr i} {
+    set r [expr {int(rand()*500000)}]
+    execsql "INSERT INTO t2 VALUES($i,$r);" 
+  }
+  execsql {
+    COMMIT;
+    SELECT count(*) FROM t2;
+  } 
+} {25000}
+
+# test initial rekey
+do_test codec-1.9 {
+  db close
+  sqlite_orig db test.db
+  execsql {
+    PRAGMA key = 'testkey';
+    PRAGMA rekey = 'testkeynew';
+  }
+  db close
+} {}
+
+# test that now the new key opens the database
+# now close database re-open with new key
+do_test codec-1.10 {
+  sqlite_orig db test.db
+  execsql {
+    PRAGMA key = 'testkeynew';
+    SELECT count(*) FROM t2;
+  }
+} {25000}
+
+
 db close
 finish_test