diff options
Diffstat (limited to 'src/com/isode/stroke/filetransfer/IncrementalBytestreamHashCalculator.java')
-rw-r--r-- | src/com/isode/stroke/filetransfer/IncrementalBytestreamHashCalculator.java | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/src/com/isode/stroke/filetransfer/IncrementalBytestreamHashCalculator.java b/src/com/isode/stroke/filetransfer/IncrementalBytestreamHashCalculator.java new file mode 100644 index 0000000..e79a7a5 --- /dev/null +++ b/src/com/isode/stroke/filetransfer/IncrementalBytestreamHashCalculator.java @@ -0,0 +1,79 @@ +/* + * Copyright (c) 2011 Tobias Markmann + * Licensed under the simplified BSD license. + * See Documentation/Licenses/BSD-simplified.txt for more information. + */ +/* + * Copyright (c) 2013-2014 Isode Limited. + * All rights reserved. + * See the COPYING file for more information. + */ +/* + * Copyright (c) 2015 Tarun Gupta. + * Licensed under the simplified BSD license. + * See Documentation/Licenses/BSD-simplified.txt for more information. + */ + +package com.isode.stroke.filetransfer; + +import com.isode.stroke.crypto.Hash; +import com.isode.stroke.crypto.CryptoProvider; +import com.isode.stroke.base.ByteArray; +import com.isode.stroke.stringcodecs.Hexify; + +public class IncrementalBytestreamHashCalculator { + + private Hash md5Hasher; + private Hash sha1Hasher; + private ByteArray md5Hash; + private ByteArray sha1Hash; + + public IncrementalBytestreamHashCalculator(boolean doMD5, boolean doSHA1, CryptoProvider crypto) { + md5Hasher = doMD5 ? crypto.createMD5() : null; + sha1Hasher = doSHA1 ? crypto.createSHA1() : null; + } + + public void feedData(final ByteArray data) { + if (md5Hasher != null) { + md5Hasher.update(data); + } + if (sha1Hasher != null) { + sha1Hasher.update(data); + } + } + + /*void feedData(const SafeByteArray& data) { + if (md5Hasher) { + md5Hasher.update(createByteArray(data.data(), data.size())); + } + if (sha1Hasher) { + sha1Hasher.update(createByteArray(data.data(), data.size())); + } + }*/ + + public ByteArray getSHA1Hash() { + assert(sha1Hasher != null); + if (sha1Hash == null) { + sha1Hash = sha1Hasher.getHash(); + } + return sha1Hash; + } + + public ByteArray getMD5Hash() { + assert(md5Hasher != null); + if (md5Hash == null) { + md5Hash = md5Hasher.getHash(); + } + return md5Hash; + } + + public String getSHA1String() { + assert(sha1Hasher != null); + return Hexify.hexify(getSHA1Hash()); + } + + public String getMD5String() { + assert(md5Hasher != null); + return Hexify.hexify(getMD5Hash()); + } +}
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