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-rw-r--r--toolkit/components/passwordmgr/OSCrypto_win.js186
1 files changed, 144 insertions, 42 deletions
diff --git a/toolkit/components/passwordmgr/OSCrypto_win.js b/toolkit/components/passwordmgr/OSCrypto_win.js
index 61d4deb87..2bc206a85 100644
--- a/toolkit/components/passwordmgr/OSCrypto_win.js
+++ b/toolkit/components/passwordmgr/OSCrypto_win.js
@@ -11,14 +11,27 @@ Cu.import("resource://gre/modules/XPCOMUtils.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "ctypes", "resource://gre/modules/ctypes.jsm");
+const FLAGS_NOT_SET = 0;
+
+const wintypes = {
+ BOOL: ctypes.bool,
+ BYTE: ctypes.uint8_t,
+ DWORD: ctypes.uint32_t,
+ PBYTE: ctypes.unsigned_char.ptr,
+ PCHAR: ctypes.char.ptr,
+ PDWORD: ctypes.uint32_t.ptr,
+ PVOID: ctypes.voidptr_t,
+ WORD: ctypes.uint16_t,
+}
+
function OSCrypto() {
this._structs = {};
this._functions = new Map();
this._libs = new Map();
this._structs.DATA_BLOB = new ctypes.StructType("DATA_BLOB",
[
- {cbData: ctypes.uint32_t},
- {pbData: ctypes.uint8_t.ptr}
+ {cbData: wintypes.DWORD},
+ {pbData: wintypes.PVOID}
]);
try {
@@ -29,31 +42,30 @@ function OSCrypto() {
this._functions.set("CryptProtectData",
this._libs.get("crypt32").declare("CryptProtectData",
ctypes.winapi_abi,
- ctypes.uint32_t,
+ wintypes.DWORD,
this._structs.DATA_BLOB.ptr,
- ctypes.voidptr_t,
- ctypes.voidptr_t,
- ctypes.voidptr_t,
- ctypes.voidptr_t,
- ctypes.uint32_t,
+ wintypes.PVOID,
+ wintypes.PVOID,
+ wintypes.PVOID,
+ wintypes.PVOID,
+ wintypes.DWORD,
this._structs.DATA_BLOB.ptr));
-
this._functions.set("CryptUnprotectData",
this._libs.get("crypt32").declare("CryptUnprotectData",
ctypes.winapi_abi,
- ctypes.uint32_t,
+ wintypes.DWORD,
this._structs.DATA_BLOB.ptr,
- ctypes.voidptr_t,
- ctypes.voidptr_t,
- ctypes.voidptr_t,
- ctypes.voidptr_t,
- ctypes.uint32_t,
+ wintypes.PVOID,
+ wintypes.PVOID,
+ wintypes.PVOID,
+ wintypes.PVOID,
+ wintypes.DWORD,
this._structs.DATA_BLOB.ptr));
this._functions.set("LocalFree",
this._libs.get("kernel32").declare("LocalFree",
ctypes.winapi_abi,
- ctypes.uint32_t,
- ctypes.voidptr_t));
+ wintypes.DWORD,
+ wintypes.PVOID));
} catch (ex) {
Cu.reportError(ex);
this.finalize();
@@ -62,18 +74,101 @@ function OSCrypto() {
}
OSCrypto.prototype = {
/**
- * Decrypt an array of numbers using the windows CryptUnprotectData API.
- * @param {number[]} array - the encrypted array that needs to be decrypted.
- * @returns {string} the decryption of the array.
+ * Convert an array containing only two bytes unsigned numbers to a string.
+ * @param {number[]} arr - the array that needs to be converted.
+ * @returns {string} the string representation of the array.
+ */
+ arrayToString(arr) {
+ let str = "";
+ for (let i = 0; i < arr.length; i++) {
+ str += String.fromCharCode(arr[i]);
+ }
+ return str;
+ },
+
+ /**
+ * Convert a string to an array.
+ * @param {string} str - the string that needs to be converted.
+ * @returns {number[]} the array representation of the string.
*/
- decryptData(array) {
+ stringToArray(str) {
+ let arr = [];
+ for (let i = 0; i < str.length; i++) {
+ arr.push(str.charCodeAt(i));
+ }
+ return arr;
+ },
+
+ /**
+ * Calculate the hash value used by IE as the name of the registry value where login details are
+ * stored.
+ * @param {string} data - the string value that needs to be hashed.
+ * @returns {string} the hash value of the string.
+ */
+ getIELoginHash(data) {
+ // return the two-digit hexadecimal code for a byte
+ function toHexString(charCode) {
+ return ("00" + charCode.toString(16)).slice(-2);
+ }
+
+ // the data needs to be encoded in null terminated UTF-16
+ data += "\0";
+ let converter = Cc["@mozilla.org/intl/scriptableunicodeconverter"].
+ createInstance(Ci.nsIScriptableUnicodeConverter);
+ converter.charset = "UTF-16";
+ // result is an out parameter,
+ // result.value will contain the array length
+ let result = {};
+ // dataArray is an array of bytes
+ let dataArray = converter.convertToByteArray(data, result);
+ // calculation of SHA1 hash value
+ let cryptoHash = Cc["@mozilla.org/security/hash;1"].
+ createInstance(Ci.nsICryptoHash);
+ cryptoHash.init(cryptoHash.SHA1);
+ cryptoHash.update(dataArray, dataArray.length);
+ let hash = cryptoHash.finish(false);
+
+ let tail = 0; // variable to calculate value for the last 2 bytes
+ // convert to a character string in hexadecimal notation
+ for (let c of hash) {
+ tail += c.charCodeAt(0);
+ }
+ hash += String.fromCharCode(tail % 256);
+
+ // convert the binary hash data to a hex string.
+ let hashStr = [toHexString(hash.charCodeAt(i)) for (i in hash)].join("");
+ return hashStr.toUpperCase();
+ },
+
+ /**
+ * Decrypt a string using the windows CryptUnprotectData API.
+ * @param {string} data - the encrypted string that needs to be decrypted.
+ * @param {?string} entropy - the entropy value of the decryption (could be null). Its value must
+ * be the same as the one used when the data was encrypted.
+ * @returns {string} the decryption of the string.
+ */
+ decryptData(data, entropy = null) {
+ let array = this.stringToArray(data);
let decryptedData = "";
- let encryptedData = ctypes.uint8_t.array(array.length)(array);
+ let encryptedData = wintypes.BYTE.array(array.length)(array);
let inData = new this._structs.DATA_BLOB(encryptedData.length, encryptedData);
let outData = new this._structs.DATA_BLOB();
+ let entropyParam;
+ if (entropy) {
+ let entropyArray = this.stringToArray(entropy);
+ entropyArray.push(0);
+ let entropyData = wintypes.WORD.array(entropyArray.length)(entropyArray);
+ let optionalEntropy = new this._structs.DATA_BLOB(entropyData.length * 2,
+ entropyData);
+ entropyParam = optionalEntropy.address();
+ } else {
+ entropyParam = null;
+ }
+
let status = this._functions.get("CryptUnprotectData")(inData.address(), null,
- null, null, null, 0,
- outData.address());
+ entropyParam,
+ null, null, FLAGS_NOT_SET,
+ outData.address());
if (status === 0) {
throw new Error("decryptData failed: " + status);
}
@@ -81,32 +176,43 @@ OSCrypto.prototype = {
// convert byte array to JS string.
let len = outData.cbData;
let decrypted = ctypes.cast(outData.pbData,
- ctypes.uint8_t.array(len).ptr).contents;
+ wintypes.BYTE.array(len).ptr).contents;
for (let i = 0; i < decrypted.length; i++) {
decryptedData += String.fromCharCode(decrypted[i]);
}
this._functions.get("LocalFree")(outData.pbData);
return decryptedData;
- },
+ },
/**
* Encrypt a string using the windows CryptProtectData API.
- * @param {string} string - the string that is going to be encrypted.
- * @returns {number[]} the encrypted string encoded as an array of numbers.
+ * @param {string} data - the string that is going to be encrypted.
+ * @param {?string} entropy - the entropy value of the encryption (could be null). Its value must
+ * be the same as the one that is going to be used for the decryption.
+ * @returns {string} the encrypted string.
*/
- encryptData(string) {
- let encryptedData = [];
- let decryptedData = ctypes.uint8_t.array(string.length)();
+ encryptData(data, entropy = null) {
+ let encryptedData = "";
+ let decryptedData = wintypes.BYTE.array(data.length)(this.stringToArray(data));
- for (let i = 0; i < string.length; i++) {
- decryptedData[i] = string.charCodeAt(i);
+ let inData = new this._structs.DATA_BLOB(data.length, decryptedData);
+ let outData = new this._structs.DATA_BLOB();
+ let entropyParam;
+ if (!entropy) {
+ entropyParam = null;
+ } else {
+ let entropyArray = this.stringToArray(entropy);
+ entropyArray.push(0);
+ let entropyData = wintypes.WORD.array(entropyArray.length)(entropyArray);
+ let optionalEntropy = new this._structs.DATA_BLOB(entropyData.length * 2,
+ entropyData);
+ entropyParam = optionalEntropy.address();
}
- let inData = new this._structs.DATA_BLOB(string.length, decryptedData);
- let outData = new this._structs.DATA_BLOB();
let status = this._functions.get("CryptProtectData")(inData.address(), null,
- null, null, null, 0,
+ entropyParam,
+ null, null, FLAGS_NOT_SET,
outData.address());
if (status === 0) {
throw new Error("encryptData failed: " + status);
@@ -115,12 +221,8 @@ OSCrypto.prototype = {
// convert byte array to JS string.
let len = outData.cbData;
let encrypted = ctypes.cast(outData.pbData,
- ctypes.uint8_t.array(len).ptr).contents;
-
- for (let i = 0; i < len; i++) {
- encryptedData.push(encrypted[i]);
- }
-
+ wintypes.BYTE.array(len).ptr).contents;
+ encryptedData = this.arrayToString(encrypted);
this._functions.get("LocalFree")(outData.pbData);
return encryptedData;
},
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-10 05:26:32 +0000