diff options
| author | Pliable Pixels <pliablepixels@gmail.com> | 2017-09-21 12:49:18 -0400 |
|---|---|---|
| committer | Pliable Pixels <pliablepixels@gmail.com> | 2017-09-21 12:49:18 -0400 |
| commit | b28028ac4082842143b0f528d6bc539da6ccb419 (patch) | |
| tree | 1e26ea969a781ed8e323fca4e3c76345113fc694 /www/lib/crypto-js/pad-ansix923.js | |
| parent | 676270d21beed31d767a06c89522198c77d5d865 (diff) | |
mega changes, including updates and X
Diffstat (limited to 'www/lib/crypto-js/pad-ansix923.js')
| -rw-r--r-- | www/lib/crypto-js/pad-ansix923.js | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/www/lib/crypto-js/pad-ansix923.js b/www/lib/crypto-js/pad-ansix923.js new file mode 100644 index 00000000..f01f21e4 --- /dev/null +++ b/www/lib/crypto-js/pad-ansix923.js @@ -0,0 +1,49 @@ +;(function (root, factory, undef) { + if (typeof exports === "object") { + // CommonJS + module.exports = exports = factory(require("./core"), require("./cipher-core")); + } + else if (typeof define === "function" && define.amd) { + // AMD + define(["./core", "./cipher-core"], factory); + } + else { + // Global (browser) + factory(root.CryptoJS); + } +}(this, function (CryptoJS) { + + /** + * ANSI X.923 padding strategy. + */ + CryptoJS.pad.AnsiX923 = { + pad: function (data, blockSize) { + // Shortcuts + var dataSigBytes = data.sigBytes; + var blockSizeBytes = blockSize * 4; + + // Count padding bytes + var nPaddingBytes = blockSizeBytes - dataSigBytes % blockSizeBytes; + + // Compute last byte position + var lastBytePos = dataSigBytes + nPaddingBytes - 1; + + // Pad + data.clamp(); + data.words[lastBytePos >>> 2] |= nPaddingBytes << (24 - (lastBytePos % 4) * 8); + data.sigBytes += nPaddingBytes; + }, + + unpad: function (data) { + // Get number of padding bytes from last byte + var nPaddingBytes = data.words[(data.sigBytes - 1) >>> 2] & 0xff; + + // Remove padding + data.sigBytes -= nPaddingBytes; + } + }; + + + return CryptoJS.pad.Ansix923; + +}));
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