Crypto Services (utils) - Support for SHA224-512

1 files changed, 43 insertions, 39 deletions

diff --git a/services/crypto/modules/utils.js b/services/crypto/modules/utils.js
index c17f5dfa1..e3a77ad0a 100644
--- a/services/crypto/modules/utils.js
+++ b/services/crypto/modules/utils.js
@@ -77,43 +77,6 @@ this.CryptoUtils = {
   },
 
   /**
-   * UTF-8 encode a message and perform a SHA-1 over it.
-   *
-   * @param message
-   *        (string) Buffer to perform operation on. Should be a JS string.
-   *                 It is possible to pass in a string representing an array
-   *                 of bytes. But, you probably don't want to UTF-8 encode
-   *                 such data and thus should not be using this function.
-   *
-   * @return string
-   *         Raw bytes constituting SHA-1 hash. Value is a JS string. Each
-   *         character is the byte value for that offset. Returned string
-   *         always has .length == 20.
-   */
-  UTF8AndSHA1: function UTF8AndSHA1(message) {
-    let hasher = Cc["@mozilla.org/security/hash;1"]
-                 .createInstance(Ci.nsICryptoHash);
-    hasher.init(hasher.SHA1);
-
-    return CryptoUtils.digestUTF8(message, hasher);
-  },
-
-  sha1: function sha1(message) {
-    return CommonUtils.bytesAsHex(CryptoUtils.UTF8AndSHA1(message));
-  },
-
-  sha1Base32: function sha1Base32(message) {
-    return CommonUtils.encodeBase32(CryptoUtils.UTF8AndSHA1(message));
-  },
-
-  sha256(message) {
-    let hasher = Cc["@mozilla.org/security/hash;1"]
-                 .createInstance(Ci.nsICryptoHash);
-    hasher.init(hasher.SHA256);
-    return CommonUtils.bytesAsHex(CryptoUtils.digestUTF8(message, hasher));
-  },
-
-  /**
    * Produce an HMAC key object from a key string.
    */
   makeHMACKey: function makeHMACKey(str) {
@@ -187,9 +150,8 @@ this.CryptoUtils = {
                        hmacAlg=Ci.nsICryptoHMAC.SHA1, hmacLen=20) {
 
     // We don't have a default in the algo itself, as NSS does.
-    // Use the constant.
     if (!dkLen) {
-      dkLen = SYNC_KEY_DECODED_LENGTH;
+      throw new Error("dkLen should be defined");
     }
 
     function F(S, c, i, h) {
@@ -551,6 +513,48 @@ this.CryptoUtils = {
 
 };
 
+/**
+ * Hashing Algorithms SHA-X.
+ * These values map directly onto the values defined
+ * in netwerk/base/nsICryptoHash.idl.
+ */
+let shaX = ["1", "256", "384", "512", "224"];
+
+for (let shaIdx = 0, shaIdxLen = shaX.length; shaIdx < shaIdxLen; shaIdx++) {
+  let shaXIdx = shaX[shaIdx];
+
+  /**
+   * UTF-8 encode a message and perform a SHA-X over it.
+   *
+   * @param message
+   *        (string) Buffer to perform operation on. Should be a JS string.
+   *                 It is possible to pass in a string representing an array
+   *                 of bytes. But, you probably don't want to UTF-8 encode
+   *                 such data and thus should not be using this function.
+   *
+   * @return string
+   *         Raw bytes constituting SHA-X hash. Value is a JS string.
+   *         Each character is the byte value for that offset.
+   */
+  CryptoUtils["UTF8AndSHA" + shaXIdx] = function (message) {
+    let hasher = Cc["@mozilla.org/security/hash;1"]
+                 .createInstance(Ci.nsICryptoHash);
+    hasher.init(hasher["SHA" + shaXIdx]);
+
+    return CryptoUtils.digestUTF8(message, hasher);
+  };
+
+  CryptoUtils["sha" + shaXIdx] = function (message) {
+    return CommonUtils.bytesAsHex(
+        CryptoUtils["UTF8AndSHA" + shaXIdx](message));
+  };
+
+  CryptoUtils["sha" + shaXIdx + "Base32"] = function (message) {
+    return CommonUtils.encodeBase32(
+        CryptoUtils["UTF8AndSHA" + shaXIdx](message));
+  };
+}
+
 XPCOMUtils.defineLazyGetter(CryptoUtils, "_utf8Converter", function() {
   let converter = Cc["@mozilla.org/intl/scriptableunicodeconverter"]
                     .createInstance(Ci.nsIScriptableUnicodeConverter);