https://github.com/infinityworks/aws-decryption-go

Decrypt AWS Encryption SDK formatted blobs using a custom private key
https://github.com/infinityworks/aws-decryption-go

Last synced: 5 months ago
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Decrypt AWS Encryption SDK formatted blobs using a custom private key

• Host: GitHub
• URL: https://github.com/infinityworks/aws-decryption-go
• Owner: infinityworks
• Created: 2020-05-20T16:53:09.000Z (about 6 years ago)
• Default Branch: master
• Last Pushed: 2020-06-02T15:06:37.000Z (about 6 years ago)
• Last Synced: 2024-06-20T16:49:58.253Z (about 2 years ago)
• Language: Go
• Homepage:
• Size: 16.6 KB
• Stars: 2
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# aws-decryption-go

Decrypt AWS Encryption SDK formatted blobs using a custom private key.

This repo implements part of the [AWS Encryption SDK spec](https://docs.aws.amazon.com/encryption-sdk/latest/developer-guide/message-format.html) in go. It is presently limitted in scope:

* Decryption only

* Framed data body only

* Algorithm Suite 0x0378 only (see [this spec page](https://docs.aws.amazon.com/encryption-sdk/latest/developer-guide/algorithms-reference.html))

This is sufficient to decrypt encrypted customer input generated by the Amazon Connect platform.

## Usage

```go

package main 

import (

    decrypt "github.com/infinityworks/aws-decryption-go"

)

func main () {

    key, err := ioutil.ReadFile("./private.key")

    if err != nil {

        log.Fatalf("error reading key file: %s", err)

    }

    ciphertext, err := ioutil.ReadFile("./ciphertext_base64")

    if err != nil {

        log.Fatalf("error reading key file: %s", err)

    }

    dataBytes, err := base64.StdEncoding.DecodeString(ciphertext)

    if err != nil {

        log.Fatalf("error decoding base64 ciphertext: %s", err)

    }

    decrypter, err := decrypt.New(key)

    if err != nil {

        log.Fatalf("error creating decrypter: %s", err)

    }

    result, err := decrypter.Decrypt(dataBytes)

    if err != nil {

        log.Fatalf("error decrypting data: %s", err)

    }

    

    fmt.Println("decrypted data: %s", string(result))

}

```