Add encrypt key to json

2025-01-02 22:50:20 +00:00 · 2020-01-26 14:38:56 -05:00 · 2020-01-26 14:38:56 -05:00 · 12777a04ca
commit 12777a04ca
parent 656d7bc006
18 changed files with 3341 additions and 3 deletions
--- a/4
+++ b/4
@ -1,5 +1,9 @@
 2020-01-26  Jay Berkenbilt  <ejb@ql.org>

+	* Add "encrypt" key to the json output. This contains largely the
+	same information as given by --show-encryption but in a
+	consistent, parseable format.
+
 	* Add options --is-encrypted and --requires-password. These can be
 	used with files, including encrypted files with unknown passwords,
 	to determine whether or not a file is encrypted and whether a
--- a/manual/qpdf-manual.xml
+++ b/manual/qpdf-manual.xml
@ -4725,6 +4725,18 @@ print "\n";
         </para>
        </listitem>
       </itemizedlist>
+       <itemizedlist>
+        <listitem>
+         <para>
+          Added <literal>encrypt</literal> key to JSON options. With
+          the exception of the reconstructed user password for older
+          encryption formats, this provides the same information as
+          <option>--show-encryption</option> but in a consistent,
+          parseable format. See output of <command>qpdf
+          --json-help</command> for details.
+         </para>
+        </listitem>
+       </itemizedlist>
      </listitem>
     </itemizedlist>
    </listitem>
--- a/qpdf/qpdf.cc
+++ b/qpdf/qpdf.cc
@ -564,6 +564,83 @@ static JSON json_schema(std::set<std::string>* keys = 0)
                "annotation flags from /F --"
                " see pdf_annotation_flag_e in qpdf/Constants.h"));
    }
+    if (all_keys || keys->count("encrypt"))
+    {
+        JSON encrypt = schema.addDictionaryMember(
+            "encrypt", JSON::makeDictionary());
+        encrypt.addDictionaryMember(
+            "encrypted",
+            JSON::makeString("whether the document is encrypted"));
+        encrypt.addDictionaryMember(
+            "userpasswordmatched",
+            JSON::makeString("whether supplied password matched user password;"
+                             " always false for non-encrypted files"));
+        encrypt.addDictionaryMember(
+            "ownerpasswordmatched",
+            JSON::makeString("whether supplied password matched owner password;"
+                             " always false for non-encrypted files"));
+        JSON capabilities = encrypt.addDictionaryMember(
+            "capabilities", JSON::makeDictionary());
+        capabilities.addDictionaryMember(
+            "accessibility",
+            JSON::makeString("allow extraction for accessibility?"));
+        capabilities.addDictionaryMember(
+            "extract",
+            JSON::makeString("allow extraction?"));
+        capabilities.addDictionaryMember(
+            "printlow",
+            JSON::makeString("allow low resolution printing?"));
+        capabilities.addDictionaryMember(
+            "printhigh",
+            JSON::makeString("allow high resolution printing?"));
+        capabilities.addDictionaryMember(
+            "modifyassembly",
+            JSON::makeString("allow modifying document assembly?"));
+        capabilities.addDictionaryMember(
+            "modifyforms",
+            JSON::makeString("allow modifying forms?"));
+        capabilities.addDictionaryMember(
+            "moddifyannotations",
+            JSON::makeString("allow modifying annotations?"));
+        capabilities.addDictionaryMember(
+            "modifyother",
+            JSON::makeString("allow other modifications?"));
+        capabilities.addDictionaryMember(
+            "modify",
+            JSON::makeString("allow all modifications?"));
+
+        JSON parameters = encrypt.addDictionaryMember(
+            "parameters", JSON::makeDictionary());
+        parameters.addDictionaryMember(
+            "R",
+            JSON::makeString("R value from Encrypt dictionary"));
+        parameters.addDictionaryMember(
+            "V",
+            JSON::makeString("V value from Encrypt dictionary"));
+        parameters.addDictionaryMember(
+            "P",
+            JSON::makeString("P value from Encrypt dictionary"));
+        parameters.addDictionaryMember(
+            "bits",
+            JSON::makeString("encryption key bit length"));
+        parameters.addDictionaryMember(
+            "key",
+            JSON::makeString("encryption key; will be null"
+                             " unless --show-encryption-key was specified"));
+        parameters.addDictionaryMember(
+            "method",
+            JSON::makeString("overall encryption method:"
+                             " none, mixed, RC4, AESv2, AESv3"));
+        parameters.addDictionaryMember(
+            "streammethod",
+            JSON::makeString("encryption method for streams"));
+        parameters.addDictionaryMember(
+            "stringmethod",
+            JSON::makeString("encryption method for string"));
+        parameters.addDictionaryMember(
+            "filemethod",
+            JSON::makeString("encryption method for attachments"));
+    }
    return schema;
 }

@ -936,7 +1013,8 @@ ArgParser::initOptionTable()
    // The list of selectable top-level keys id duplicated in three
    // places: json_schema, do_json, and initOptionTable.
    char const* json_key_choices[] = {
-        "objects", "pages", "pagelabels", "outlines", "acroform", 0};
+        "objects", "pages", "pagelabels", "outlines", "acroform",
+        "encrypt", 0};
    (*t)["json-key"] = oe_requiredChoices(
        &ArgParser::argJsonKey, json_key_choices);
    (*t)["json-object"] = oe_requiredParameter(
@ -1568,8 +1646,11 @@ ArgParser::argJsonHelp()
        << std::endl
        << "specify a subset of top-level keys when you invoke qpdf, but the \"version\""
        << std::endl
-        << "and \"parameters\" keys will always be present."
+        << "and \"parameters\" keys will always be present. Note that the \"encrypt\""
        << std::endl
+        << "key's values will be populated for non-encrypted files. Some values will"
+        << std::endl
+        << "be null, and others will have values that apply to unencrypted files."
        << std::endl
        << json_schema().unparse()
        << std::endl;
@ -3817,6 +3898,106 @@ static void do_json_acroform(QPDF& pdf, Options& o, JSON& j)
    }
 }

+static void do_json_encrypt(QPDF& pdf, Options& o, JSON& j)
+{
+    int R = 0;
+    int P = 0;
+    int V = 0;
+    QPDF::encryption_method_e stream_method = QPDF::e_none;
+    QPDF::encryption_method_e string_method = QPDF::e_none;
+    QPDF::encryption_method_e file_method = QPDF::e_none;
+    bool is_encrypted = pdf.isEncrypted(
+        R, P, V, stream_method, string_method, file_method);
+    JSON j_encrypt = j.addDictionaryMember(
+        "encrypt", JSON::makeDictionary());
+    j_encrypt.addDictionaryMember(
+        "encrypted",
+        JSON::makeBool(is_encrypted));
+    j_encrypt.addDictionaryMember(
+        "userpasswordmatched",
+        JSON::makeBool(is_encrypted && pdf.userPasswordMatched()));
+    j_encrypt.addDictionaryMember(
+        "ownerpasswordmatched",
+        JSON::makeBool(is_encrypted && pdf.ownerPasswordMatched()));
+    JSON j_capabilities = j_encrypt.addDictionaryMember(
+        "capabilities", JSON::makeDictionary());
+    j_capabilities.addDictionaryMember(
+        "accessibility",
+        JSON::makeBool(pdf.allowAccessibility()));
+    j_capabilities.addDictionaryMember(
+        "extract",
+        JSON::makeBool(pdf.allowExtractAll()));
+    j_capabilities.addDictionaryMember(
+        "printlow",
+        JSON::makeBool(pdf.allowPrintLowRes()));
+    j_capabilities.addDictionaryMember(
+        "printhigh",
+        JSON::makeBool(pdf.allowPrintHighRes()));
+    j_capabilities.addDictionaryMember(
+        "modifyassembly",
+        JSON::makeBool(pdf.allowModifyAssembly()));
+    j_capabilities.addDictionaryMember(
+        "modifyforms",
+        JSON::makeBool(pdf.allowModifyForm()));
+    j_capabilities.addDictionaryMember(
+        "moddifyannotations",
+        JSON::makeBool(pdf.allowModifyAnnotation()));
+    j_capabilities.addDictionaryMember(
+        "modifyother",
+        JSON::makeBool(pdf.allowModifyOther()));
+    j_capabilities.addDictionaryMember(
+        "modify",
+        JSON::makeBool(pdf.allowModifyAll()));
+    JSON j_parameters = j_encrypt.addDictionaryMember(
+        "parameters", JSON::makeDictionary());
+    j_parameters.addDictionaryMember("R", JSON::makeInt(R));
+    j_parameters.addDictionaryMember("V", JSON::makeInt(V));
+    j_parameters.addDictionaryMember("P", JSON::makeInt(P));
+    int bits = 0;
+    JSON key = JSON::makeNull();
+    if (is_encrypted)
+    {
+        std::string encryption_key = pdf.getEncryptionKey();
+        bits = QIntC::to_int(encryption_key.length() * 8);
+        if (o.show_encryption_key)
+        {
+            key = JSON::makeString(QUtil::hex_encode(encryption_key));
+        }
+    }
+    j_parameters.addDictionaryMember("bits", JSON::makeInt(bits));
+    j_parameters.addDictionaryMember("key", key);
+    auto fix_method = [is_encrypted](QPDF::encryption_method_e& m) {
+                          if (is_encrypted && m == QPDF::e_none)
+                          {
+                              m = QPDF::e_rc4;
+                          }
+                      };
+    fix_method(stream_method);
+    fix_method(string_method);
+    fix_method(file_method);
+    std::string s_stream_method = show_encryption_method(stream_method);
+    std::string s_string_method = show_encryption_method(string_method);
+    std::string s_file_method = show_encryption_method(file_method);
+    std::string s_overall_method;
+    if ((stream_method == string_method) &&
+        (stream_method == file_method))
+    {
+        s_overall_method = s_stream_method;
+    }
+    else
+    {
+        s_overall_method = "mixed";
+    }
+    j_parameters.addDictionaryMember(
+        "method", JSON::makeString(s_overall_method));
+    j_parameters.addDictionaryMember(
+        "streammethod", JSON::makeString(s_stream_method));
+    j_parameters.addDictionaryMember(
+        "stringmethod", JSON::makeString(s_string_method));
+    j_parameters.addDictionaryMember(
+        "filemethod", JSON::makeString(s_file_method));
+}
+
 static void do_json(QPDF& pdf, Options& o)
 {
    JSON j = JSON::makeDictionary();
@ -3869,6 +4050,10 @@ static void do_json(QPDF& pdf, Options& o)
    {
        do_json_acroform(pdf, o, j);
    }
+    if (all_keys || o.json_keys.count("encrypt"))
+    {
+        do_json_encrypt(pdf, o, j);
+    }

    // Check against schema

--- a/qpdf/qtest/qpdf.test
+++ b/qpdf/qtest/qpdf.test
@ -607,6 +607,7 @@ my @json_files = (
    ['image-streams', []],
    ['image-streams-small', []],
    ['field-types', []],
+    ['field-types', ['--show-encryption-key']],
    ['image-streams', ['--decode-level=all']],
    ['image-streams', ['--decode-level=specialized']],
    ['page-labels-and-outlines', ['--json-key=objects']],
@ -621,6 +622,8 @@ my @json_files = (
     ['--json-key=objects', '--json-object=trailer', '--json-object=2 0 R']],
    ['field-types', ['--json-key=acroform']],
    ['need-appearances', ['--json-key=acroform']],
+    ['V4-aes', ['--json-key=encrypt']],
+    ['V4-aes', ['--json-key=encrypt', '--show-encryption-key']],
 );
 $n_tests += scalar(@json_files);
 foreach my $d (@json_files)
@ -3176,7 +3179,7 @@ my @encrypted_files =
      1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
    );

-$n_tests += 5 + (2 * (@encrypted_files)) + (6 * (@encrypted_files - 6)) + 9;
+$n_tests += 5 + (2 * (@encrypted_files)) + (7 * (@encrypted_files - 6)) + 9;

 $td->runtest("encrypted file",
 	     {$td->COMMAND => "test_driver 2 encrypted-with-images.pdf"},
@ -3216,7 +3219,9 @@ foreach my $d (@encrypted_files)
 	$modifyother, $modifyall) = @$d;

    my $f = sub { $_[0] ? "allowed" : "not allowed" };
+    my $jf = sub { $_[0] ? "true" : "false" };
    my $enc_details = "";
+    my $enc_json = "{\n  \"encrypt\": {\n    \"capabilities\": {\n";
    if ($match_owner)
    {
        $enc_details .= "Supplied password is owner password\n";
@ -3235,6 +3240,37 @@ foreach my $d (@encrypted_files)
 	"modify annotations: " . &$f($modifyannot) . "\n" .
 	"modify other: " . &$f($modifyother) . "\n" .
 	"modify anything: " . &$f($modifyall) . "\n";
+    $enc_json .=
+        "      \"accessibility\": " . &$jf($accessible) . ",\n" .
+        "      \"extract\": " . &$jf($extract) . ",\n" .
+        "      \"moddifyannotations\": " . &$jf($modifyannot) . ",\n" .
+        "      \"modify\": " . &$jf($modifyall) . ",\n" .
+        "      \"modifyassembly\": " . &$jf($modifyassembly) . ",\n" .
+        "      \"modifyforms\": " . &$jf($modifyform) . ",\n" .
+        "      \"modifyother\": " . &$jf($modifyother) . ",\n" .
+        "      \"printhigh\": " . &$jf($printhigh) . ",\n" .
+        "      \"printlow\": " . &$jf($printlow) . "\n" .
+        "    },\n" .
+        "    \"encrypted\": true,\n" .
+        "    \"ownerpasswordmatched\": ---opm---,\n" .
+        "    \"parameters\": {\n" .
+        "      \"P\": ---P---,\n" .
+        "      \"R\": ---R---,\n" .
+        "      \"V\": ---V---,\n" .
+        "      \"bits\": ---bits---,\n" .
+        "      \"filemethod\": \"---method---\",\n" .
+        "      \"key\": null,\n" .
+        "      \"method\": \"---method---\",\n" .
+        "      \"streammethod\": \"---method---\",\n" .
+        "      \"stringmethod\": \"---method---\"\n" .
+        "    },\n" .
+        "    \"userpasswordmatched\": ---upm---\n" .
+        "  },\n" .
+        "  \"parameters\": {\n" .
+        "    \"decodelevel\": \"generalized\"\n" .
+        "  },\n" .
+        "  \"version\": 1\n" .
+        "}\n";
    if ($file =~ m/XI-/)
    {
        $enc_details .=
@ -3277,6 +3313,16 @@ foreach my $d (@encrypted_files)
 	my $upass = $3 || "";
 	my $opass = $4 || "";
 	my $bits = (($V == 5) ? 256 : ($V == 2) ? 128 : 40);
+        my $method = $bits == 256 ? "AESv3" : "RC4";
+        my $opm = ($pass eq $opass ? "true" : "false");
+        my $upm = ($pass eq $upass ? "true" : "false");
+        $enc_json =~ s/---R---/$R/;
+        $enc_json =~ s/---P---/$P/;
+        $enc_json =~ s/---V---/$V/;
+        $enc_json =~ s/---bits---/$bits/;
+        $enc_json =~ s/---method---/$method/g;
+        $enc_json =~ s/---opm---/$opm/;
+        $enc_json =~ s/---upm---/$upm/;

 	my $eflags = "-encrypt \"$upass\" \"$opass\" $bits $xeflags --";
        if (($pass ne $upass) && ($V >= 5))
@ -3307,6 +3353,13 @@ foreach my $d (@encrypted_files)
 			  "User password = $upass\n$enc_details",
 			  $td->EXIT_STATUS => 0},
 		     $td->NORMALIZE_NEWLINES);
+        $td->runtest("json encrypt key ($enc_n)",
+		     {$td->COMMAND =>
+			  "qpdf --json --json-key=encrypt" .
+                          " --password=\"$pass\"" .
+			  " $file.enc2"},
+		     {$td->STRING => $enc_json, $td->EXIT_STATUS => 0},
+		     $td->NORMALIZE_NEWLINES);
 	$td->runtest("decrypt again",
 		     {$td->COMMAND =>
 			  "qpdf --static-id --no-original-object-ids -qdf" .
--- a/qpdf/qtest/qpdf/direct-pages-json.out
+++ b/qpdf/qtest/qpdf/direct-pages-json.out
@ -4,6 +4,33 @@
    "hasacroform": false,
    "needappearances": false
  },
+  "encrypt": {
+    "capabilities": {
+      "accessibility": true,
+      "extract": true,
+      "moddifyannotations": true,
+      "modify": true,
+      "modifyassembly": true,
+      "modifyforms": true,
+      "modifyother": true,
+      "printhigh": true,
+      "printlow": true
+    },
+    "encrypted": false,
+    "ownerpasswordmatched": false,
+    "parameters": {
+      "P": 0,
+      "R": 0,
+      "V": 0,
+      "bits": 0,
+      "filemethod": "none",
+      "key": null,
+      "method": "none",
+      "streammethod": "none",
+      "stringmethod": "none"
+    },
+    "userpasswordmatched": false
+  },
  "objects": {
    "1 0 R": {
      "/Pages": "2 0 R",
--- a/qpdf/qtest/qpdf/json-V4-aes-encrypt---show-encryption-key.out
+++ b/qpdf/qtest/qpdf/json-V4-aes-encrypt---show-encryption-key.out
@ -0,0 +1,33 @@
+{
+  "encrypt": {
+    "capabilities": {
+      "accessibility": true,
+      "extract": true,
+      "moddifyannotations": true,
+      "modify": true,
+      "modifyassembly": true,
+      "modifyforms": true,
+      "modifyother": true,
+      "printhigh": true,
+      "printlow": true
+    },
+    "encrypted": true,
+    "ownerpasswordmatched": true,
+    "parameters": {
+      "P": -4,
+      "R": 4,
+      "V": 4,
+      "bits": 128,
+      "filemethod": "AESv2",
+      "key": "474258b004f2ce0017adeb6e79574357",
+      "method": "AESv2",
+      "streammethod": "AESv2",
+      "stringmethod": "AESv2"
+    },
+    "userpasswordmatched": true
+  },
+  "parameters": {
+    "decodelevel": "generalized"
+  },
+  "version": 1
+}
--- a/qpdf/qtest/qpdf/json-V4-aes-encrypt.out
+++ b/qpdf/qtest/qpdf/json-V4-aes-encrypt.out
@ -0,0 +1,33 @@
+{
+  "encrypt": {
+    "capabilities": {
+      "accessibility": true,
+      "extract": true,
+      "moddifyannotations": true,
+      "modify": true,
+      "modifyassembly": true,
+      "modifyforms": true,
+      "modifyother": true,
+      "printhigh": true,
+      "printlow": true
+    },
+    "encrypted": true,
+    "ownerpasswordmatched": true,
+    "parameters": {
+      "P": -4,
+      "R": 4,
+      "V": 4,
+      "bits": 128,
+      "filemethod": "AESv2",
+      "key": null,
+      "method": "AESv2",
+      "streammethod": "AESv2",
+      "stringmethod": "AESv2"
+    },
+    "userpasswordmatched": true
+  },
+  "parameters": {
+    "decodelevel": "generalized"
+  },
+  "version": 1
+}
--- a/qpdf/qtest/qpdf/json-field-types---show-encryption-key.out
+++ b/qpdf/qtest/qpdf/json-field-types---show-encryption-key.out
--- a/qpdf/qtest/qpdf/json-field-types.out
+++ b/qpdf/qtest/qpdf/json-field-types.out
@ -385,6 +385,33 @@
    "hasacroform": true,
    "needappearances": true
  },
+  "encrypt": {
+    "capabilities": {
+      "accessibility": true,
+      "extract": true,
+      "moddifyannotations": true,
+      "modify": true,
+      "modifyassembly": true,
+      "modifyforms": true,
+      "modifyother": true,
+      "printhigh": true,
+      "printlow": true
+    },
+    "encrypted": false,
+    "ownerpasswordmatched": false,
+    "parameters": {
+      "P": 0,
+      "R": 0,
+      "V": 0,
+      "bits": 0,
+      "filemethod": "none",
+      "key": null,
+      "method": "none",
+      "streammethod": "none",
+      "stringmethod": "none"
+    },
+    "userpasswordmatched": false
+  },
  "objects": {
    "1 0 R": {
      "/AcroForm": {
--- a/qpdf/qtest/qpdf/json-image-streams-all.out
+++ b/qpdf/qtest/qpdf/json-image-streams-all.out
@ -4,6 +4,33 @@
    "hasacroform": false,
    "needappearances": false
  },
+  "encrypt": {
+    "capabilities": {
+      "accessibility": true,
+      "extract": true,
+      "moddifyannotations": true,
+      "modify": true,
+      "modifyassembly": true,
+      "modifyforms": true,
+      "modifyother": true,
+      "printhigh": true,
+      "printlow": true
+    },
+    "encrypted": false,
+    "ownerpasswordmatched": false,
+    "parameters": {
+      "P": 0,
+      "R": 0,
+      "V": 0,
+      "bits": 0,
+      "filemethod": "none",
+      "key": null,
+      "method": "none",
+      "streammethod": "none",
+      "stringmethod": "none"
+    },
+    "userpasswordmatched": false
+  },
  "objects": {
    "1 0 R": {
      "/Pages": "2 0 R",
--- a/qpdf/qtest/qpdf/json-image-streams-small.out
+++ b/qpdf/qtest/qpdf/json-image-streams-small.out
@ -4,6 +4,33 @@
    "hasacroform": false,
    "needappearances": false
  },
+  "encrypt": {
+    "capabilities": {
+      "accessibility": true,
+      "extract": true,
+      "moddifyannotations": true,
+      "modify": true,
+      "modifyassembly": true,
+      "modifyforms": true,
+      "modifyother": true,
+      "printhigh": true,
+      "printlow": true
+    },
+    "encrypted": false,
+    "ownerpasswordmatched": false,
+    "parameters": {
+      "P": 0,
+      "R": 0,
+      "V": 0,
+      "bits": 0,
+      "filemethod": "none",
+      "key": null,
+      "method": "none",
+      "streammethod": "none",
+      "stringmethod": "none"
+    },
+    "userpasswordmatched": false
+  },
  "objects": {
    "1 0 R": {
      "/Pages": "2 0 R",
--- a/qpdf/qtest/qpdf/json-image-streams-specialized.out
+++ b/qpdf/qtest/qpdf/json-image-streams-specialized.out
@ -4,6 +4,33 @@
    "hasacroform": false,
    "needappearances": false
  },
+  "encrypt": {
+    "capabilities": {
+      "accessibility": true,
+      "extract": true,
+      "moddifyannotations": true,
+      "modify": true,
+      "modifyassembly": true,
+      "modifyforms": true,
+      "modifyother": true,
+      "printhigh": true,
+      "printlow": true
+    },
+    "encrypted": false,
+    "ownerpasswordmatched": false,
+    "parameters": {
+      "P": 0,
+      "R": 0,
+      "V": 0,
+      "bits": 0,
+      "filemethod": "none",
+      "key": null,
+      "method": "none",
+      "streammethod": "none",
+      "stringmethod": "none"
+    },
+    "userpasswordmatched": false
+  },
  "objects": {
    "1 0 R": {
      "/Pages": "2 0 R",
--- a/qpdf/qtest/qpdf/json-image-streams.out
+++ b/qpdf/qtest/qpdf/json-image-streams.out
@ -4,6 +4,33 @@
    "hasacroform": false,
    "needappearances": false
  },
+  "encrypt": {
+    "capabilities": {
+      "accessibility": true,
+      "extract": true,
+      "moddifyannotations": true,
+      "modify": true,
+      "modifyassembly": true,
+      "modifyforms": true,
+      "modifyother": true,
+      "printhigh": true,
+      "printlow": true
+    },
+    "encrypted": false,
+    "ownerpasswordmatched": false,
+    "parameters": {
+      "P": 0,
+      "R": 0,
+      "V": 0,
+      "bits": 0,
+      "filemethod": "none",
+      "key": null,
+      "method": "none",
+      "streammethod": "none",
+      "stringmethod": "none"
+    },
+    "userpasswordmatched": false
+  },
  "objects": {
    "1 0 R": {
      "/Pages": "2 0 R",
--- a/qpdf/qtest/qpdf/json-outlines-with-actions.out
+++ b/qpdf/qtest/qpdf/json-outlines-with-actions.out
@ -4,6 +4,33 @@
    "hasacroform": false,
    "needappearances": false
  },
+  "encrypt": {
+    "capabilities": {
+      "accessibility": true,
+      "extract": true,
+      "moddifyannotations": true,
+      "modify": true,
+      "modifyassembly": true,
+      "modifyforms": true,
+      "modifyother": true,
+      "printhigh": true,
+      "printlow": true
+    },
+    "encrypted": false,
+    "ownerpasswordmatched": false,
+    "parameters": {
+      "P": 0,
+      "R": 0,
+      "V": 0,
+      "bits": 0,
+      "filemethod": "none",
+      "key": null,
+      "method": "none",
+      "streammethod": "none",
+      "stringmethod": "none"
+    },
+    "userpasswordmatched": false
+  },
  "objects": {
    "1 0 R": {
      "/Names": {
--- a/qpdf/qtest/qpdf/json-outlines-with-old-root-dests.out
+++ b/qpdf/qtest/qpdf/json-outlines-with-old-root-dests.out
@ -4,6 +4,33 @@
    "hasacroform": false,
    "needappearances": false
  },
+  "encrypt": {
+    "capabilities": {
+      "accessibility": true,
+      "extract": true,
+      "moddifyannotations": true,
+      "modify": true,
+      "modifyassembly": true,
+      "modifyforms": true,
+      "modifyother": true,
+      "printhigh": true,
+      "printlow": true
+    },
+    "encrypted": false,
+    "ownerpasswordmatched": false,
+    "parameters": {
+      "P": 0,
+      "R": 0,
+      "V": 0,
+      "bits": 0,
+      "filemethod": "none",
+      "key": null,
+      "method": "none",
+      "streammethod": "none",
+      "stringmethod": "none"
+    },
+    "userpasswordmatched": false
+  },
  "objects": {
    "1 0 R": {
      "/Dests": "107 0 R",
--- a/qpdf/qtest/qpdf/json-page-labels-and-outlines.out
+++ b/qpdf/qtest/qpdf/json-page-labels-and-outlines.out
@ -4,6 +4,33 @@
    "hasacroform": false,
    "needappearances": false
  },
+  "encrypt": {
+    "capabilities": {
+      "accessibility": true,
+      "extract": true,
+      "moddifyannotations": true,
+      "modify": true,
+      "modifyassembly": true,
+      "modifyforms": true,
+      "modifyother": true,
+      "printhigh": true,
+      "printlow": true
+    },
+    "encrypted": false,
+    "ownerpasswordmatched": false,
+    "parameters": {
+      "P": 0,
+      "R": 0,
+      "V": 0,
+      "bits": 0,
+      "filemethod": "none",
+      "key": null,
+      "method": "none",
+      "streammethod": "none",
+      "stringmethod": "none"
+    },
+    "userpasswordmatched": false
+  },
  "objects": {
    "1 0 R": {
      "/Outlines": "95 0 R",
--- a/qpdf/qtest/qpdf/json-page-labels-num-tree.out
+++ b/qpdf/qtest/qpdf/json-page-labels-num-tree.out
@ -4,6 +4,33 @@
    "hasacroform": false,
    "needappearances": false
  },
+  "encrypt": {
+    "capabilities": {
+      "accessibility": true,
+      "extract": true,
+      "moddifyannotations": true,
+      "modify": true,
+      "modifyassembly": true,
+      "modifyforms": true,
+      "modifyother": true,
+      "printhigh": true,
+      "printlow": true
+    },
+    "encrypted": false,
+    "ownerpasswordmatched": false,
+    "parameters": {
+      "P": 0,
+      "R": 0,
+      "V": 0,
+      "bits": 0,
+      "filemethod": "none",
+      "key": null,
+      "method": "none",
+      "streammethod": "none",
+      "stringmethod": "none"
+    },
+    "userpasswordmatched": false
+  },
  "objects": {
    "1 0 R": {
      "/PageLabels": "2 0 R",
--- a/qpdf/qtest/qpdf/page_api_2-json.out
+++ b/qpdf/qtest/qpdf/page_api_2-json.out
@ -4,6 +4,33 @@
    "hasacroform": false,
    "needappearances": false
  },
+  "encrypt": {
+    "capabilities": {
+      "accessibility": true,
+      "extract": true,
+      "moddifyannotations": true,
+      "modify": true,
+      "modifyassembly": true,
+      "modifyforms": true,
+      "modifyother": true,
+      "printhigh": true,
+      "printlow": true
+    },
+    "encrypted": false,
+    "ownerpasswordmatched": false,
+    "parameters": {
+      "P": 0,
+      "R": 0,
+      "V": 0,
+      "bits": 0,
+      "filemethod": "none",
+      "key": null,
+      "method": "none",
+      "streammethod": "none",
+      "stringmethod": "none"
+    },
+    "userpasswordmatched": false
+  },
  "objects": {
    "1 0 R": {
      "/Pages": "3 0 R",