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20 lines
505 B
20 lines
505 B
/*
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* pkcs7.unpad
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* https://github.com/brightcove/pkcs7
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*
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* Copyright (c) 2014 Brightcove
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* Licensed under the apache2 license.
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*/
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'use strict';
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/**
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* Returns the subarray of a Uint8Array without PKCS#7 padding.
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* @param padded {Uint8Array} unencrypted bytes that have been padded
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* @return {Uint8Array} the unpadded bytes
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* @see http://tools.ietf.org/html/rfc5652
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*/
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module.exports = function unpad(padded) {
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return padded.subarray(0, padded.byteLength - padded[padded.byteLength - 1]);
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};
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