https://github.com/sketchytech/Swiftography

Standard cryptographic algorithms in a Swift Playground
https://github.com/sketchytech/Swiftography

Last synced: 2 months ago
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Standard cryptographic algorithms in a Swift Playground

• Host: GitHub
• URL: https://github.com/sketchytech/Swiftography
• Owner: sketchytech
• License: mit
• Created: 2015-04-23T09:24:58.000Z (about 9 years ago)
• Default Branch: master
• Last Pushed: 2017-11-10T12:42:41.000Z (over 6 years ago)
• Last Synced: 2024-01-29T18:05:48.706Z (5 months ago)
• Language: Swift
• Size: 273 KB
• Stars: 8
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Lists

• Awesome-Swift-Playgrounds - Swiftography - Standard cryptographic algorithms in a Swift Playground. ⏳ (Theoretical Computer Science / Algorithms and Data Structures)

README

        
# Swiftography

Standard cryptographic algorithms in a Swift Playground

## CryptoJS

Swiftorgraphy leverages the [CryptoJS](https://code.google.com/p/crypto-js/) repository via JavaScriptCore framework. It is featured in a playground here but can transfered to a regular app as well.

## IDPF font obfuscation added

Font obfuscation in line with [IDPF EPUB standard](http://www.idpf.org/epub/30/spec/epub30-ocf.html#font-obfuscation) works to obfuscate and de-obfuscate fonts.

## Example

As you'll see in the playground all is self-explanatory and easy to use, simply write:

```

let str = "Hello Swift!"

Crypto.sha1(str) // "9c602d242f2ecedff6dd3703576e1fa39aa25706"

Crypto.sha224(str) // "807db20e8e9f401114c7d542609bda14b8ebcb723f662cc14602ee96"

Crypto.sha256(str) // "bf452d84b203dfe67b45f1d73be4866f2552f8414eff79452375a467f02e30d7"

Crypto.sha384(str) // "f1a8c74940995d34dc90b7972c50c36c1a5e9137c723aeacf0e11d527f63f487f96707c339e58e9a210cc2084243b028"

Crypto.sha512(str) // "636130e3878c8c47ee266849d8c8754481dae9018a32f74ac13a7773390dfee02e7472fb7caa1c1a33e846bcc16204e895ddd11dd8175e87f3b2451b7326c03f"

Crypto.sha3(str) // "f23a824632ba5a27fc2d7bf3683032acb27862eb49d7bce825c75f86a52a2b123aab3c76035fab5a5aad01b0cc0c495b2140198260a0e7441ba9235f26795338"

Crypto.md5(str) // "ba135edf6168271dfe4ed79e719e8188"

Crypto.ripemd160(str) // "1c87b79ebcb075d87242486fe0e8e43b9ccdd311"

```

In addition to common crypotography algorithms, repo now includes IDPF EPUB standard font obfuscation.

```

// IDPF font obfuscation

if let url = NSBundle.mainBundle().URLForResource("Lobster-Regular", withExtension: "ttf"),

    source = NSData(contentsOfURL: url) {

        // obfuscate font using IDPF approach

        let obFont = obfuscateFontIDPF(source,"urn:uuid:9A6376C9-9E0A-4BA4-87CE-667AA91A70DE")

        obFont == source // false, font has been obfuscated

        obfuscateFontIDPF(obFont,"urn:uuid:9A6376C9-9E0A-4BA4-87CE-667AA91A70DE") == source // true, font has been obfuscated back to original state

}

```