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106 lines
3.7 KiB
Plaintext
106 lines
3.7 KiB
Plaintext
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsISupports.idl"
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interface nsIInputStream;
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/**
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* nsICryptoHash
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* This interface provides crytographic hashing algorithms.
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*/
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[scriptable, uuid(1e5b7c43-4688-45ce-92e1-77ed931e3bbe)]
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interface nsICryptoHash : nsISupports
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{
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/**
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* Hashing Algorithms. These values are to be used by the
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* |init| method to indicate which hashing function to
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* use. These values map directly onto the values defined
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* in mozilla/security/nss/lib/cryptohi/hasht.h.
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*/
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const short MD2 = 1; /* String value: "md2" */
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const short MD5 = 2; /* String value: "md5" */
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const short SHA1 = 3; /* String value: "sha1" */
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const short SHA256 = 4; /* String value: "sha256" */
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const short SHA384 = 5; /* String value: "sha384" */
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const short SHA512 = 6; /* String value: "sha512" */
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/**
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* Initialize the hashing object. This method may be
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* called multiple times with different algorithm types.
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*
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* @param aAlgorithm the algorithm type to be used.
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* This value must be one of the above valid
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* algorithm types.
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*
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* @throws NS_ERROR_INVALID_ARG if an unsupported algorithm
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* type is passed.
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*
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* NOTE: This method or initWithString must be called
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* before any other method on this interface is called.
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*/
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void init(in unsigned long aAlgorithm);
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/**
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* Initialize the hashing object. This method may be
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* called multiple times with different algorithm types.
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*
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* @param aAlgorithm the algorithm type to be used.
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*
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* @throws NS_ERROR_INVALID_ARG if an unsupported algorithm
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* type is passed.
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*
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* NOTE: This method or init must be called before any
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* other method on this interface is called.
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*/
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void initWithString(in ACString aAlgorithm);
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/**
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* @param aData a buffer to calculate the hash over
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*
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* @param aLen the length of the buffer |aData|
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*
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* @throws NS_ERROR_NOT_INITIALIZED if |init| has not been
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* called.
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*/
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void update([const, array, size_is(aLen)] in octet aData, in unsigned long aLen);
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/**
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* Calculates and updates a new hash based on a given data stream.
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*
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* @param aStream an input stream to read from.
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*
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* @param aLen how much to read from the given |aStream|. Passing
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* PR_UINT32_MAX indicates that all data available will be used
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* to update the hash.
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*
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* @throws NS_ERROR_NOT_INITIALIZED if |init| has not been
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* called.
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*
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* @throws NS_ERROR_NOT_AVAILABLE if the requested amount of
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* data to be calculated into the hash is not available.
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*
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*/
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void updateFromStream(in nsIInputStream aStream, in unsigned long aLen);
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/**
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* Completes this hash object and produces the actual hash data.
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*
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* @param aASCII if true then the returned value is a base-64
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* encoded string. if false, then the returned value is
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* binary data.
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*
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* @return a hash of the data that was read by this object. This can
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* be either binary data or base 64 encoded.
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*
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* @throws NS_ERROR_NOT_INITIALIZED if |init| has not been
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* called.
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*
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* NOTE: This method may be called any time after |init|
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* is called. This call resets the object to its
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* pre-init state.
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*/
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ACString finish(in boolean aASCII);
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};
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