mirror of
https://github.com/gchq/CyberChef.git
synced 2026-03-02 21:44:38 +01:00
Compare commits
16 Commits
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c80cb57b07 | ||
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dec28e16d4 |
@@ -2,6 +2,10 @@
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All major and minor version changes will be documented in this file. Details of patch-level version changes can be found in [commit messages](https://github.com/gchq/CyberChef/commits/master).
|
||||
|
||||
|
||||
### [8.34.0] - 2019-06-28
|
||||
- Various new visualisations added to the 'Entropy' operation [@MShwed] | [#535]
|
||||
- Efficiency improvements made to the 'Entropy' operation for large file support [@n1474335]
|
||||
|
||||
### [8.33.0] - 2019-06-27
|
||||
- 'Bzip2 Compress' operation added and 'Bzip2 Decompress' operation greatly improved [@artemisbot] | [#531]
|
||||
|
||||
@@ -136,6 +140,7 @@ All major and minor version changes will be documented in this file. Details of
|
||||
|
||||
|
||||
|
||||
[8.34.0]: https://github.com/gchq/CyberChef/releases/tag/v8.34.0
|
||||
[8.33.0]: https://github.com/gchq/CyberChef/releases/tag/v8.33.0
|
||||
[8.32.0]: https://github.com/gchq/CyberChef/releases/tag/v8.32.0
|
||||
[8.31.0]: https://github.com/gchq/CyberChef/releases/tag/v8.31.0
|
||||
@@ -198,6 +203,7 @@ All major and minor version changes will be documented in this file. Details of
|
||||
[@anthony-arnold]: https://github.com/anthony-arnold
|
||||
[@masq]: https://github.com/masq
|
||||
[@Ge0rg3]: https://github.com/Ge0rg3
|
||||
[@MShwed]: https://github.com/MShwed
|
||||
|
||||
[#95]: https://github.com/gchq/CyberChef/pull/299
|
||||
[#173]: https://github.com/gchq/CyberChef/pull/173
|
||||
@@ -242,4 +248,5 @@ All major and minor version changes will be documented in this file. Details of
|
||||
[#525]: https://github.com/gchq/CyberChef/pull/525
|
||||
[#531]: https://github.com/gchq/CyberChef/pull/531
|
||||
[#533]: https://github.com/gchq/CyberChef/pull/533
|
||||
[#535]: https://github.com/gchq/CyberChef/pull/535
|
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[#571]: https://github.com/gchq/CyberChef/pull/571
|
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|
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200
package-lock.json
generated
200
package-lock.json
generated
@@ -1,6 +1,6 @@
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"version": "8.33.1",
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@@ -5390,37 +5396,43 @@
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@@ -5429,25 +5441,29 @@
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|
||||
"bundled": true,
|
||||
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|
||||
"integrity": "sha512-4KghwV8vH5k+g2ylT+sLTjy5wmUOb9vPhnM8NHvRf9dHmnW/CndrFXy2aRPaPST6dugXSdHXfeaHQm77PIz/1A==",
|
||||
"dev": true,
|
||||
"optional": true,
|
||||
"requires": {
|
||||
@@ -5631,7 +5666,8 @@
|
||||
},
|
||||
"nopt": {
|
||||
"version": "4.0.1",
|
||||
"bundled": true,
|
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"integrity": "sha1-0NRoWv1UFRk8jHUFYC0NF81kR00=",
|
||||
"dev": true,
|
||||
"optional": true,
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"requires": {
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||||
@@ -5641,13 +5677,15 @@
|
||||
},
|
||||
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|
||||
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|
||||
"bundled": true,
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||||
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||||
"integrity": "sha512-8/JCaftHwbd//k6y2rEWp6k1wxVfpFzB6t1p825+cUb7Ym2XQfhwIC5KwhrvzZRJu+LtDE585zVaS32+CGtf0g==",
|
||||
"dev": true,
|
||||
"optional": true
|
||||
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|
||||
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|
||||
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|
||||
"bundled": true,
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||||
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||||
"integrity": "sha512-+TcdO7HJJ8peiiYhvPxsEDhF3PJFGUGRcFsGve3vxvxdcpO2Z4Z7rkosRM0kWj6LfbK/P0gu3dzk5RU1ffvFcw==",
|
||||
"dev": true,
|
||||
"optional": true,
|
||||
"requires": {
|
||||
@@ -5657,7 +5695,8 @@
|
||||
},
|
||||
"npmlog": {
|
||||
"version": "4.1.2",
|
||||
"bundled": true,
|
||||
"resolved": "https://registry.npmjs.org/npmlog/-/npmlog-4.1.2.tgz",
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||||
"integrity": "sha512-2uUqazuKlTaSI/dC8AzicUck7+IrEaOnN/e0jd3Xtt1KcGpwx30v50mL7oPyr/h9bL3E4aZccVwpwP+5W9Vjkg==",
|
||||
"dev": true,
|
||||
"optional": true,
|
||||
"requires": {
|
||||
@@ -5669,19 +5708,22 @@
|
||||
},
|
||||
"number-is-nan": {
|
||||
"version": "1.0.1",
|
||||
"bundled": true,
|
||||
"resolved": "https://registry.npmjs.org/number-is-nan/-/number-is-nan-1.0.1.tgz",
|
||||
"integrity": "sha1-CXtgK1NCKlIsGvuHkDGDNpQaAR0=",
|
||||
"dev": true,
|
||||
"optional": true
|
||||
},
|
||||
"object-assign": {
|
||||
"version": "4.1.1",
|
||||
"bundled": true,
|
||||
"resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
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||||
"integrity": "sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=",
|
||||
"dev": true,
|
||||
"optional": true
|
||||
},
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||||
"once": {
|
||||
"version": "1.4.0",
|
||||
"bundled": true,
|
||||
"resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
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||||
"integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
|
||||
"dev": true,
|
||||
"optional": true,
|
||||
"requires": {
|
||||
@@ -5690,19 +5732,22 @@
|
||||
},
|
||||
"os-homedir": {
|
||||
"version": "1.0.2",
|
||||
"bundled": true,
|
||||
"resolved": "https://registry.npmjs.org/os-homedir/-/os-homedir-1.0.2.tgz",
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||||
"integrity": "sha1-/7xJiDNuDoM94MFox+8VISGqf7M=",
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||||
"dev": true,
|
||||
"optional": true
|
||||
},
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||||
"os-tmpdir": {
|
||||
"version": "1.0.2",
|
||||
"bundled": true,
|
||||
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||||
"integrity": "sha1-u+Z0BseaqFxc/sdm/lc0VV36EnQ=",
|
||||
"dev": true,
|
||||
"optional": true
|
||||
},
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||||
"osenv": {
|
||||
"version": "0.1.5",
|
||||
"bundled": true,
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||||
"resolved": "https://registry.npmjs.org/osenv/-/osenv-0.1.5.tgz",
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||||
"integrity": "sha512-0CWcCECdMVc2Rw3U5w9ZjqX6ga6ubk1xDVKxtBQPK7wis/0F2r9T6k4ydGYhecl7YUBxBVxhL5oisPsNxAPe2g==",
|
||||
"dev": true,
|
||||
"optional": true,
|
||||
"requires": {
|
||||
@@ -5712,19 +5757,22 @@
|
||||
},
|
||||
"path-is-absolute": {
|
||||
"version": "1.0.1",
|
||||
"bundled": true,
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||||
"resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
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||||
"integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
|
||||
"dev": true,
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||||
"optional": true
|
||||
},
|
||||
"process-nextick-args": {
|
||||
"version": "2.0.0",
|
||||
"bundled": true,
|
||||
"resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.0.tgz",
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||||
"integrity": "sha512-MtEC1TqN0EU5nephaJ4rAtThHtC86dNN9qCuEhtshvpVBkAW5ZO7BASN9REnF9eoXGcRub+pFuKEpOHE+HbEMw==",
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||||
"dev": true,
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||||
"optional": true
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||||
},
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"rc": {
|
||||
"version": "1.2.8",
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||||
"bundled": true,
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||||
"resolved": "https://registry.npmjs.org/rc/-/rc-1.2.8.tgz",
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||||
"integrity": "sha512-y3bGgqKj3QBdxLbLkomlohkvsA8gdAiUQlSBJnBhfn+BPxg4bc62d8TcBW15wavDfgexCgccckhcZvywyQYPOw==",
|
||||
"dev": true,
|
||||
"optional": true,
|
||||
"requires": {
|
||||
@@ -5736,7 +5784,8 @@
|
||||
"dependencies": {
|
||||
"minimist": {
|
||||
"version": "1.2.0",
|
||||
"bundled": true,
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"resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
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||||
"integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
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||||
"dev": true,
|
||||
"optional": true
|
||||
}
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||||
@@ -5744,7 +5793,8 @@
|
||||
},
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||||
"readable-stream": {
|
||||
"version": "2.3.6",
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"bundled": true,
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"resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
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"integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
|
||||
"dev": true,
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"optional": true,
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"requires": {
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@@ -5759,7 +5809,8 @@
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||||
},
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"rimraf": {
|
||||
"version": "2.6.3",
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"bundled": true,
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"resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.6.3.tgz",
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"integrity": "sha512-mwqeW5XsA2qAejG46gYdENaxXjx9onRNCfn7L0duuP4hCuTIi/QO7PDK07KJfp1d+izWPrzEJDcSqBa0OZQriA==",
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"dev": true,
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"optional": true,
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"requires": {
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@@ -5768,43 +5819,50 @@
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},
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"safe-buffer": {
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"version": "5.1.2",
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"bundled": true,
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"resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
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"integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==",
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"dev": true,
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"optional": true
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},
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"safer-buffer": {
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"version": "2.1.2",
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"bundled": true,
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"resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
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"integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==",
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"dev": true,
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"optional": true
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},
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"integrity": "sha512-NqVDv9TpANUjFm0N8uM5GxL36UgKi9/atZw+x7YFnQ8ckwFGKrl4xX4yWtrey3UJm5nP1kUbnYgLopqWNSRhWw==",
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"dev": true,
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"optional": true
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},
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"semver": {
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"version": "5.7.0",
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"resolved": "https://registry.npmjs.org/semver/-/semver-5.7.0.tgz",
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"dev": true,
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"optional": true
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},
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"set-blocking": {
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"version": "2.0.0",
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"bundled": true,
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"integrity": "sha1-BF+XgtARrppoA93TgrJDkrPYkPc=",
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"dev": true,
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},
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"resolved": "https://registry.npmjs.org/signal-exit/-/signal-exit-3.0.2.tgz",
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"integrity": "sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0=",
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"dev": true,
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"optional": true
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},
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"string-width": {
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"resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
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"integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
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"dev": true,
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"optional": true,
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"requires": {
|
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@@ -5815,7 +5873,8 @@
|
||||
},
|
||||
"string_decoder": {
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"version": "1.1.1",
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"bundled": true,
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"resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
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"integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
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"dev": true,
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"optional": true,
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"requires": {
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@@ -5824,7 +5883,8 @@
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||||
},
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"strip-ansi": {
|
||||
"version": "3.0.1",
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||||
"bundled": true,
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"resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
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"integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
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"dev": true,
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"optional": true,
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"requires": {
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@@ -5833,13 +5893,15 @@
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},
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"strip-json-comments": {
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"version": "2.0.1",
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"bundled": true,
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"resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-2.0.1.tgz",
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"integrity": "sha1-PFMZQukIwml8DsNEhYwobHygpgo=",
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"dev": true,
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"optional": true
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},
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"tar": {
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"version": "4.4.8",
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"dev": true,
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"optional": true,
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"requires": {
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@@ -5854,13 +5916,15 @@
|
||||
},
|
||||
"util-deprecate": {
|
||||
"version": "1.0.2",
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||||
"bundled": true,
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"resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
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"integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=",
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"dev": true,
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"optional": true
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},
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"wide-align": {
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"version": "1.1.3",
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"bundled": true,
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"resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.3.tgz",
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"integrity": "sha512-QGkOQc8XL6Bt5PwnsExKBPuMKBxnGxWWW3fU55Xt4feHozMUhdUMaBCk290qpm/wG5u/RSKzwdAC4i51YigihA==",
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"dev": true,
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"optional": true,
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"requires": {
|
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@@ -5869,13 +5933,15 @@
|
||||
},
|
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"wrappy": {
|
||||
"version": "1.0.2",
|
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"bundled": true,
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"resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
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"integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
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"dev": true,
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"optional": true
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},
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"yallist": {
|
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"version": "3.0.3",
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"bundled": true,
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"resolved": "https://registry.npmjs.org/yallist/-/yallist-3.0.3.tgz",
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"integrity": "sha512-S+Zk8DEWE6oKpV+vI3qWkaK+jSbIK86pCwe2IF/xwIpQ8jEuxpw9NyaGjmp9+BoJv5FV2piqCDcoCtStppiq2A==",
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"dev": true,
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"optional": true
|
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}
|
||||
|
||||
@@ -1,6 +1,6 @@
|
||||
{
|
||||
"name": "cyberchef",
|
||||
"version": "8.33.1",
|
||||
"version": "8.34.1",
|
||||
"description": "The Cyber Swiss Army Knife for encryption, encoding, compression and data analysis.",
|
||||
"author": "n1474335 <n1474335@gmail.com>",
|
||||
"homepage": "https://gchq.github.io/CyberChef",
|
||||
|
||||
@@ -4,8 +4,13 @@
|
||||
* @license Apache-2.0
|
||||
*/
|
||||
|
||||
import * as d3temp from "d3";
|
||||
import * as nodomtemp from "nodom";
|
||||
|
||||
import Operation from "../Operation";
|
||||
import Utils from "../Utils";
|
||||
|
||||
const d3 = d3temp.default ? d3temp.default : d3temp;
|
||||
const nodom = nodomtemp.default ? nodomtemp.default: nodomtemp;
|
||||
|
||||
/**
|
||||
* Entropy operation
|
||||
@@ -19,30 +24,45 @@ class Entropy extends Operation {
|
||||
super();
|
||||
|
||||
this.name = "Entropy";
|
||||
this.module = "Default";
|
||||
this.module = "Charts";
|
||||
this.description = "Shannon Entropy, in the context of information theory, is a measure of the rate at which information is produced by a source of data. It can be used, in a broad sense, to detect whether data is likely to be structured or unstructured. 8 is the maximum, representing highly unstructured, 'random' data. English language text usually falls somewhere between 3.5 and 5. Properly encrypted or compressed data should have an entropy of over 7.5.";
|
||||
this.infoURL = "https://wikipedia.org/wiki/Entropy_(information_theory)";
|
||||
this.inputType = "byteArray";
|
||||
this.outputType = "number";
|
||||
this.inputType = "ArrayBuffer";
|
||||
this.outputType = "json";
|
||||
this.presentType = "html";
|
||||
this.args = [];
|
||||
this.args = [
|
||||
{
|
||||
"name": "Visualisation",
|
||||
"type": "option",
|
||||
"value": ["Shannon scale", "Histogram (Bar)", "Histogram (Line)", "Curve", "Image"]
|
||||
}
|
||||
];
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {byteArray} input
|
||||
* @param {Object[]} args
|
||||
* Calculates the frequency of bytes in the input.
|
||||
*
|
||||
* @param {Uint8Array} input
|
||||
* @returns {number}
|
||||
*/
|
||||
run(input, args) {
|
||||
calculateShannonEntropy(input) {
|
||||
const prob = [],
|
||||
uniques = input.unique(),
|
||||
str = Utils.byteArrayToChars(input);
|
||||
let i;
|
||||
occurrences = new Array(256).fill(0);
|
||||
|
||||
for (i = 0; i < uniques.length; i++) {
|
||||
prob.push(str.count(Utils.chr(uniques[i])) / input.length);
|
||||
// Count occurrences of each byte in the input
|
||||
let i;
|
||||
for (i = 0; i < input.length; i++) {
|
||||
occurrences[input[i]]++;
|
||||
}
|
||||
|
||||
// Store probability list
|
||||
for (i = 0; i < occurrences.length; i++) {
|
||||
if (occurrences[i] > 0) {
|
||||
prob.push(occurrences[i] / input.length);
|
||||
}
|
||||
}
|
||||
|
||||
// Calculate Shannon entropy
|
||||
let entropy = 0,
|
||||
p;
|
||||
|
||||
@@ -54,44 +74,357 @@ class Entropy extends Operation {
|
||||
return -entropy;
|
||||
}
|
||||
|
||||
/**
|
||||
* Calculates the scanning entropy of the input
|
||||
*
|
||||
* @param {Uint8Array} inputBytes
|
||||
* @returns {Object}
|
||||
*/
|
||||
calculateScanningEntropy(inputBytes) {
|
||||
const entropyData = [];
|
||||
const binWidth = inputBytes.length < 256 ? 8 : 256;
|
||||
|
||||
for (let bytePos = 0; bytePos < inputBytes.length; bytePos += binWidth) {
|
||||
const block = inputBytes.slice(bytePos, bytePos+binWidth);
|
||||
entropyData.push(this.calculateShannonEntropy(block));
|
||||
}
|
||||
|
||||
return { entropyData, binWidth };
|
||||
}
|
||||
|
||||
/**
|
||||
* Calculates the frequency of bytes in the input.
|
||||
*
|
||||
* @param {object} svg
|
||||
* @param {function} xScale
|
||||
* @param {function} yScale
|
||||
* @param {integer} svgHeight
|
||||
* @param {integer} svgWidth
|
||||
* @param {object} margins
|
||||
* @param {string} xTitle
|
||||
* @param {string} yTitle
|
||||
*/
|
||||
createAxes(svg, xScale, yScale, svgHeight, svgWidth, margins, title, xTitle, yTitle) {
|
||||
// Axes
|
||||
const yAxis = d3.axisLeft()
|
||||
.scale(yScale);
|
||||
|
||||
const xAxis = d3.axisBottom()
|
||||
.scale(xScale);
|
||||
|
||||
svg.append("g")
|
||||
.attr("transform", `translate(0, ${svgHeight - margins.bottom})`)
|
||||
.call(xAxis);
|
||||
|
||||
svg.append("g")
|
||||
.attr("transform", `translate(${margins.left},0)`)
|
||||
.call(yAxis);
|
||||
|
||||
// Axes labels
|
||||
svg.append("text")
|
||||
.attr("transform", "rotate(-90)")
|
||||
.attr("y", 0 - margins.left)
|
||||
.attr("x", 0 - (svgHeight / 2))
|
||||
.attr("dy", "1em")
|
||||
.style("text-anchor", "middle")
|
||||
.text(yTitle);
|
||||
|
||||
svg.append("text")
|
||||
.attr("transform", `translate(${svgWidth / 2}, ${svgHeight - margins.bottom + 40})`)
|
||||
.style("text-anchor", "middle")
|
||||
.text(xTitle);
|
||||
|
||||
// Add title
|
||||
svg.append("text")
|
||||
.attr("transform", `translate(${svgWidth / 2}, ${margins.top - 10})`)
|
||||
.style("text-anchor", "middle")
|
||||
.text(title);
|
||||
}
|
||||
|
||||
/**
|
||||
* Calculates the frequency of bytes in the input.
|
||||
*
|
||||
* @param {Uint8Array} inputBytes
|
||||
* @returns {number[]}
|
||||
*/
|
||||
calculateByteFrequency(inputBytes) {
|
||||
const freq = new Array(256).fill(0);
|
||||
if (inputBytes.length === 0) return freq;
|
||||
|
||||
// Count occurrences of each byte in the input
|
||||
let i;
|
||||
for (i = 0; i < inputBytes.length; i++) {
|
||||
freq[inputBytes[i]]++;
|
||||
}
|
||||
|
||||
for (i = 0; i < freq.length; i++) {
|
||||
freq[i] = freq[i] / inputBytes.length;
|
||||
}
|
||||
|
||||
return freq;
|
||||
}
|
||||
|
||||
/**
|
||||
* Calculates the frequency of bytes in the input.
|
||||
*
|
||||
* @param {number[]} byteFrequency
|
||||
* @returns {HTML}
|
||||
*/
|
||||
createByteFrequencyLineHistogram(byteFrequency) {
|
||||
const margins = { top: 30, right: 20, bottom: 50, left: 30 };
|
||||
|
||||
const svgWidth = 500,
|
||||
svgHeight = 500;
|
||||
|
||||
const document = new nodom.Document();
|
||||
let svg = document.createElement("svg");
|
||||
|
||||
svg = d3.select(svg)
|
||||
.attr("width", "100%")
|
||||
.attr("height", "100%")
|
||||
.attr("viewBox", `0 0 ${svgWidth} ${svgHeight}`);
|
||||
|
||||
const yScale = d3.scaleLinear()
|
||||
.domain([0, d3.max(byteFrequency, d => d)])
|
||||
.range([svgHeight - margins.bottom, margins.top]);
|
||||
|
||||
const xScale = d3.scaleLinear()
|
||||
.domain([0, byteFrequency.length - 1])
|
||||
.range([margins.left, svgWidth - margins.right]);
|
||||
|
||||
const line = d3.line()
|
||||
.x((_, i) => xScale(i))
|
||||
.y(d => yScale(d))
|
||||
.curve(d3.curveMonotoneX);
|
||||
|
||||
svg.append("path")
|
||||
.datum(byteFrequency)
|
||||
.attr("fill", "none")
|
||||
.attr("stroke", "steelblue")
|
||||
.attr("d", line);
|
||||
|
||||
this.createAxes(svg, xScale, yScale, svgHeight, svgWidth, margins, "", "Byte", "Byte Frequency");
|
||||
|
||||
return svg._groups[0][0].outerHTML;
|
||||
}
|
||||
|
||||
/**
|
||||
* Creates a byte frequency histogram
|
||||
*
|
||||
* @param {number[]} byteFrequency
|
||||
* @returns {HTML}
|
||||
*/
|
||||
createByteFrequencyBarHistogram(byteFrequency) {
|
||||
const margins = { top: 30, right: 20, bottom: 50, left: 30 };
|
||||
|
||||
const svgWidth = 500,
|
||||
svgHeight = 500,
|
||||
binWidth = 1;
|
||||
|
||||
const document = new nodom.Document();
|
||||
let svg = document.createElement("svg");
|
||||
svg = d3.select(svg)
|
||||
.attr("width", "100%")
|
||||
.attr("height", "100%")
|
||||
.attr("viewBox", `0 0 ${svgWidth} ${svgHeight}`);
|
||||
|
||||
const yExtent = d3.extent(byteFrequency, d => d);
|
||||
const yScale = d3.scaleLinear()
|
||||
.domain(yExtent)
|
||||
.range([svgHeight - margins.bottom, margins.top]);
|
||||
|
||||
const xScale = d3.scaleLinear()
|
||||
.domain([0, byteFrequency.length - 1])
|
||||
.range([margins.left - binWidth, svgWidth - margins.right]);
|
||||
|
||||
svg.selectAll("rect")
|
||||
.data(byteFrequency)
|
||||
.enter().append("rect")
|
||||
.attr("x", (_, i) => xScale(i) + binWidth)
|
||||
.attr("y", dataPoint => yScale(dataPoint))
|
||||
.attr("width", binWidth)
|
||||
.attr("height", dataPoint => yScale(yExtent[0]) - yScale(dataPoint))
|
||||
.attr("fill", "blue");
|
||||
|
||||
this.createAxes(svg, xScale, yScale, svgHeight, svgWidth, margins, "", "Byte", "Byte Frequency");
|
||||
|
||||
return svg._groups[0][0].outerHTML;
|
||||
}
|
||||
|
||||
/**
|
||||
* Creates a byte frequency histogram
|
||||
*
|
||||
* @param {number[]} entropyData
|
||||
* @returns {HTML}
|
||||
*/
|
||||
createEntropyCurve(entropyData) {
|
||||
const margins = { top: 30, right: 20, bottom: 50, left: 30 };
|
||||
|
||||
const svgWidth = 500,
|
||||
svgHeight = 500;
|
||||
|
||||
const document = new nodom.Document();
|
||||
let svg = document.createElement("svg");
|
||||
svg = d3.select(svg)
|
||||
.attr("width", "100%")
|
||||
.attr("height", "100%")
|
||||
.attr("viewBox", `0 0 ${svgWidth} ${svgHeight}`);
|
||||
|
||||
const yScale = d3.scaleLinear()
|
||||
.domain([0, d3.max(entropyData, d => d)])
|
||||
.range([svgHeight - margins.bottom, margins.top]);
|
||||
|
||||
const xScale = d3.scaleLinear()
|
||||
.domain([0, entropyData.length])
|
||||
.range([margins.left, svgWidth - margins.right]);
|
||||
|
||||
const line = d3.line()
|
||||
.x((_, i) => xScale(i))
|
||||
.y(d => yScale(d))
|
||||
.curve(d3.curveMonotoneX);
|
||||
|
||||
if (entropyData.length > 0) {
|
||||
svg.append("path")
|
||||
.datum(entropyData)
|
||||
.attr("d", line);
|
||||
|
||||
svg.selectAll("path").attr("fill", "none").attr("stroke", "steelblue");
|
||||
}
|
||||
|
||||
this.createAxes(svg, xScale, yScale, svgHeight, svgWidth, margins, "Scanning Entropy", "Block", "Entropy");
|
||||
|
||||
return svg._groups[0][0].outerHTML;
|
||||
}
|
||||
|
||||
/**
|
||||
* Creates an image representation of the entropy
|
||||
*
|
||||
* @param {number[]} entropyData
|
||||
* @returns {HTML}
|
||||
*/
|
||||
createEntropyImage(entropyData) {
|
||||
const svgHeight = 100,
|
||||
svgWidth = 100,
|
||||
cellSize = 1,
|
||||
nodes = [];
|
||||
|
||||
for (let i = 0; i < entropyData.length; i++) {
|
||||
nodes.push({
|
||||
x: i % svgWidth,
|
||||
y: Math.floor(i / svgWidth),
|
||||
entropy: entropyData[i]
|
||||
});
|
||||
}
|
||||
|
||||
const document = new nodom.Document();
|
||||
let svg = document.createElement("svg");
|
||||
svg = d3.select(svg)
|
||||
.attr("width", "100%")
|
||||
.attr("height", "100%")
|
||||
.attr("viewBox", `0 0 ${svgWidth} ${svgHeight}`);
|
||||
|
||||
const greyScale = d3.scaleLinear()
|
||||
.domain([0, d3.max(entropyData, d => d)])
|
||||
.range(["#000000", "#FFFFFF"])
|
||||
.interpolate(d3.interpolateRgb);
|
||||
|
||||
svg
|
||||
.selectAll("rect")
|
||||
.data(nodes)
|
||||
.enter().append("rect")
|
||||
.attr("x", d => d.x * cellSize)
|
||||
.attr("y", d => d.y * cellSize)
|
||||
.attr("width", cellSize)
|
||||
.attr("height", cellSize)
|
||||
.style("fill", d => greyScale(d.entropy));
|
||||
|
||||
return svg._groups[0][0].outerHTML;
|
||||
}
|
||||
|
||||
/**
|
||||
* Displays the entropy as a scale bar for web apps.
|
||||
*
|
||||
* @param {number} entropy
|
||||
* @returns {html}
|
||||
* @returns {HTML}
|
||||
*/
|
||||
present(entropy) {
|
||||
createShannonEntropyVisualization(entropy) {
|
||||
return `Shannon entropy: ${entropy}
|
||||
<br><canvas id='chart-area'></canvas><br>
|
||||
- 0 represents no randomness (i.e. all the bytes in the data have the same value) whereas 8, the maximum, represents a completely random string.
|
||||
- Standard English text usually falls somewhere between 3.5 and 5.
|
||||
- Properly encrypted or compressed data of a reasonable length should have an entropy of over 7.5.
|
||||
<br><canvas id='chart-area'></canvas><br>
|
||||
- 0 represents no randomness (i.e. all the bytes in the data have the same value) whereas 8, the maximum, represents a completely random string.
|
||||
- Standard English text usually falls somewhere between 3.5 and 5.
|
||||
- Properly encrypted or compressed data of a reasonable length should have an entropy of over 7.5.
|
||||
|
||||
The following results show the entropy of chunks of the input data. Chunks with particularly high entropy could suggest encrypted or compressed sections.
|
||||
The following results show the entropy of chunks of the input data. Chunks with particularly high entropy could suggest encrypted or compressed sections.
|
||||
|
||||
<br><script>
|
||||
var canvas = document.getElementById("chart-area"),
|
||||
parentRect = canvas.parentNode.getBoundingClientRect(),
|
||||
entropy = ${entropy},
|
||||
height = parentRect.height * 0.25;
|
||||
<br><script>
|
||||
var canvas = document.getElementById("chart-area"),
|
||||
parentRect = canvas.parentNode.getBoundingClientRect(),
|
||||
entropy = ${entropy},
|
||||
height = parentRect.height * 0.25;
|
||||
|
||||
canvas.width = parentRect.width * 0.95;
|
||||
canvas.height = height > 150 ? 150 : height;
|
||||
canvas.width = parentRect.width * 0.95;
|
||||
canvas.height = height > 150 ? 150 : height;
|
||||
|
||||
CanvasComponents.drawScaleBar(canvas, entropy, 8, [
|
||||
{
|
||||
label: "English text",
|
||||
min: 3.5,
|
||||
max: 5
|
||||
},{
|
||||
label: "Encrypted/compressed",
|
||||
min: 7.5,
|
||||
max: 8
|
||||
}
|
||||
]);
|
||||
</script>`;
|
||||
CanvasComponents.drawScaleBar(canvas, entropy, 8, [
|
||||
{
|
||||
label: "English text",
|
||||
min: 3.5,
|
||||
max: 5
|
||||
},{
|
||||
label: "Encrypted/compressed",
|
||||
min: 7.5,
|
||||
max: 8
|
||||
}
|
||||
]);
|
||||
</script>`;
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {ArrayBuffer} input
|
||||
* @param {Object[]} args
|
||||
* @returns {json}
|
||||
*/
|
||||
run(input, args) {
|
||||
const visualizationType = args[0];
|
||||
input = new Uint8Array(input);
|
||||
|
||||
switch (visualizationType) {
|
||||
case "Histogram (Bar)":
|
||||
case "Histogram (Line)":
|
||||
return this.calculateByteFrequency(input);
|
||||
case "Curve":
|
||||
case "Image":
|
||||
return this.calculateScanningEntropy(input).entropyData;
|
||||
case "Shannon scale":
|
||||
default:
|
||||
return this.calculateShannonEntropy(input);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Displays the entropy in a visualisation for web apps.
|
||||
*
|
||||
* @param {json} entropyData
|
||||
* @param {Object[]} args
|
||||
* @returns {html}
|
||||
*/
|
||||
present(entropyData, args) {
|
||||
const visualizationType = args[0];
|
||||
|
||||
switch (visualizationType) {
|
||||
case "Histogram (Bar)":
|
||||
return this.createByteFrequencyBarHistogram(entropyData);
|
||||
case "Histogram (Line)":
|
||||
return this.createByteFrequencyLineHistogram(entropyData);
|
||||
case "Curve":
|
||||
return this.createEntropyCurve(entropyData);
|
||||
case "Image":
|
||||
return this.createEntropyImage(entropyData);
|
||||
case "Shannon scale":
|
||||
default:
|
||||
return this.createShannonEntropyVisualization(entropyData);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
export default Entropy;
|
||||
|
||||
@@ -244,7 +244,7 @@ class App {
|
||||
/**
|
||||
* Sets up the adjustable splitter to allow the user to resize areas of the page.
|
||||
*
|
||||
* @param {boolean} [minimise=false] - Set this flag if attempting to minimuse frames to 0 width
|
||||
* @param {boolean} [minimise=false] - Set this flag if attempting to minimise frames to 0 width
|
||||
*/
|
||||
initialiseSplitter(minimise=false) {
|
||||
if (this.columnSplitter) this.columnSplitter.destroy();
|
||||
@@ -252,9 +252,9 @@ class App {
|
||||
|
||||
this.columnSplitter = Split(["#operations", "#recipe", "#IO"], {
|
||||
sizes: [20, 30, 50],
|
||||
minSize: minimise ? [0, 0, 0] : [240, 370, 450],
|
||||
minSize: minimise ? [0, 0, 0] : [240, 310, 450],
|
||||
gutterSize: 4,
|
||||
expandToMin: false,
|
||||
expandToMin: true,
|
||||
onDrag: function() {
|
||||
this.manager.recipe.adjustWidth();
|
||||
}.bind(this)
|
||||
|
||||
@@ -617,6 +617,23 @@ class RecipeWaiter {
|
||||
ingredientRule.style.gridTemplateColumns = "auto auto auto auto";
|
||||
ingredientChildRule.style.gridColumn = "1 / span 4";
|
||||
}
|
||||
|
||||
// Hide Chef icon on Bake button if the page is compressed
|
||||
const bakeIcon = document.querySelector("#bake img");
|
||||
|
||||
if (recList.clientWidth < 370) {
|
||||
// Hide Chef icon on Bake button
|
||||
bakeIcon.style.display = "none";
|
||||
} else {
|
||||
bakeIcon.style.display = "inline-block";
|
||||
}
|
||||
|
||||
// Scale controls to fit pane width
|
||||
const controls = document.getElementById("controls");
|
||||
const controlsContent = document.getElementById("controls-content");
|
||||
const scale = (controls.clientWidth - 1) / controlsContent.scrollWidth;
|
||||
|
||||
controlsContent.style.transform = `translate(-50%, -50%) scale(${scale})`;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
@@ -191,7 +191,7 @@
|
||||
<ul id="rec-list" class="list-area no-select"></ul>
|
||||
|
||||
<div id="controls" class="no-select">
|
||||
<div class="d-flex align-items-center">
|
||||
<div id="controls-content" class="d-flex align-items-center">
|
||||
<button type="button" class="mx-2 btn btn-lg btn-secondary" id="step" data-toggle="tooltip" title="Step through the recipe">
|
||||
Step
|
||||
</button>
|
||||
|
||||
@@ -21,6 +21,14 @@
|
||||
background-color: var(--secondary-background-colour);
|
||||
}
|
||||
|
||||
#controls-content {
|
||||
position: relative;
|
||||
left: 50%;
|
||||
top: 50%;
|
||||
transform: translate(-50%, -50%);
|
||||
transform-origin: center left;
|
||||
}
|
||||
|
||||
#auto-bake-label {
|
||||
display: inline-block;
|
||||
width: 100px;
|
||||
|
||||
Reference in New Issue
Block a user