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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is mozilla.org code.
- *
- * The Initial Developer of the Original Code is
- * Doug Turner <dougt@meer.net>.
- * Portions created by the Initial Developer are Copyright (C) 2005
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either the GNU General Public License Version 2 or later (the "GPL"), or
- * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
-
- #include "nsISupports.idl"
- interface nsIInputStream;
-
- /**
- * nsICryptoHash
- * This interface provides crytographic hashing algorithms.
- */
-
- [scriptable, uuid(1e5b7c43-4688-45ce-92e1-77ed931e3bbe)]
- interface nsICryptoHash : nsISupports
- {
- /**
- * Hashing Algorithms. These values are to be used by the
- * |init| method to indicate which hashing function to
- * use. These values map directly onto the values defined
- * in mozilla/security/nss/lib/cryptohi/hasht.h.
- */
- const short MD2 = 1; /* String value: "md2" */
- const short MD5 = 2; /* String value: "md5" */
- const short SHA1 = 3; /* String value: "sha1" */
- const short SHA256 = 4; /* String value: "sha256" */
- const short SHA384 = 5; /* String value: "sha384" */
- const short SHA512 = 6; /* String value: "sha512" */
-
- /**
- * Initialize the hashing object. This method may be
- * called multiple times with different algorithm types.
- *
- * @param aAlgorithm the algorithm type to be used.
- * This value must be one of the above valid
- * algorithm types.
- *
- * @throws NS_ERROR_INVALID_ARG if an unsupported algorithm
- * type is passed.
- *
- * NOTE: This method or initWithString must be called
- * before any other method on this interface is called.
- */
- void init(in unsigned long aAlgorithm);
-
- /**
- * Initialize the hashing object. This method may be
- * called multiple times with different algorithm types.
- *
- * @param aAlgorithm the algorithm type to be used.
- *
- * @throws NS_ERROR_INVALID_ARG if an unsupported algorithm
- * type is passed.
- *
- * NOTE: This method or init must be called before any
- * other method on this interface is called.
- */
- void initWithString(in ACString aAlgorithm);
-
- /**
- * @param aData a buffer to calculate the hash over
- *
- * @param aLen the length of the buffer |aData|
- *
- * @throws NS_ERROR_NOT_INITIALIZED if |init| has not been
- * called.
- */
- void update([const, array, size_is(aLen)] in octet aData, in unsigned long aLen);
-
- /**
- * Calculates and updates a new hash based on a given data stream.
- *
- * @param aStream an input stream to read from.
- *
- * @param aLen how much to read from the given |aStream|. Passing
- * PR_UINT32_MAX indicates that all data available will be used
- * to update the hash.
- *
- * @throws NS_ERROR_NOT_INITIALIZED if |init| has not been
- * called.
- *
- * @throws NS_ERROR_NOT_AVAILABLE if the requested amount of
- * data to be calculated into the hash is not available.
- *
- */
- void updateFromStream(in nsIInputStream aStream, in unsigned long aLen);
-
- /**
- * Completes this hash object and produces the actual hash data.
- *
- * @param aASCII if true then the returned value is a base-64
- * encoded string. if false, then the returned value is
- * binary data.
- *
- * @return a hash of the data that was read by this object. This can
- * be either binary data or base 64 encoded.
- *
- * @throws NS_ERROR_NOT_INITIALIZED if |init| has not been
- * called.
- *
- * NOTE: This method may be called any time after |init|
- * is called. This call resets the object to its
- * pre-init state.
- */
- ACString finish(in PRBool aASCII);
- };
-