https://github.com/midnight-wonderer/ige-go

add Infinite Garble Extension mode of operation support to golang
https://github.com/midnight-wonderer/ige-go

Last synced: 8 days ago
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add Infinite Garble Extension mode of operation support to golang

• Host: GitHub
• URL: https://github.com/midnight-wonderer/ige-go
• Owner: midnight-wonderer
• License: other
• Created: 2014-06-10T07:14:26.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2014-07-30T19:46:24.000Z (over 10 years ago)
• Last Synced: 2024-03-14T19:19:40.528Z (10 months ago)
• Language: Go
• Size: 176 KB
• Stars: 1
• Watchers: 2
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
###IGE-go

My favorite cryptography mode of operation scheme for the block cipher, Infinite Garble Extension. It is not good for general purpose message authentication though.

Since you are here I guess you know why and when to use IGE mode but if not just [Google it](https://encrypted.google.com/search?q=Infinite+Garble+Extension&hl=en) for more info.

###Install

go get github.com/MidnightWonderer/IGE-go/ige

###Example Usage

```Go

package main

import (

	"crypto/aes"

	"encoding/hex"

	"fmt"

	"github.com/MidnightWonderer/IGE-go/ige"

)

func main() {

	aesKey, _ := hex.DecodeString("5468697320697320616E20696D706C65")

	aesBlock, _ := aes.NewCipher(aesKey)

	igeIV, _ := hex.DecodeString("6D656E746174696F6E206F6620494745206D6F646520666F72204F70656E5353")

	igeEnc := ige.NewIGEEncrypter(aesBlock, igeIV)

	crypttext, _ := hex.DecodeString("99706487A1CDE613BC6DE0B6F24B1C7AA448C8B9C3403E3467A8CAD89340F53B")

	fmt.Printf("%s\r\n", hex.EncodeToString(crypttext))

	igeEnc.CryptBlocks(crypttext, crypttext)

	fmt.Printf("%s\r\n", hex.EncodeToString(crypttext))

	//print:

	//99706487a1cde613bc6de0b6f24b1c7aa448c8b9c3403e3467a8cad89340f53b

	//4c2e204c6574277320686f70652042656e20676f74206974207269676874210a

	//test vector:

	//https://web.archive.org/web/20120418022623/http://www.links.org/files/openssl-ige.pdf

}

```

###etc.

IGE-go was placed under The MIT-Zero License. Contribution back is encouraged.