Use upstream whatsapp again (#809)

1 files changed, 0 insertions, 101 deletions

diff --git a/vendor/github.com/matterbridge/go-whatsapp/crypto/cbc/cbc.go b/vendor/github.com/matterbridge/go-whatsapp/crypto/cbc/cbc.go
deleted file mode 100644
index cc5427c3..00000000
--- a/vendor/github.com/matterbridge/go-whatsapp/crypto/cbc/cbc.go
+++ /dev/null
@@ -1,101 +0,0 @@
-/*
-CBC describes a block cipher mode. In cryptography, a block cipher mode of operation is an algorithm that uses a
-block cipher to provide an information service such as confidentiality or authenticity. A block cipher by itself
-is only suitable for the secure cryptographic transformation (encryption or decryption) of one fixed-length group of
-bits called a block. A mode of operation describes how to repeatedly apply a cipher's single-block operation to
-securely transform amounts of data larger than a block.
-
-This package simplifies the usage of AES-256-CBC.
-*/
-package cbc
-
-/*
-Some code is provided by the GitHub user locked (github.com/locked):
-https://gist.github.com/locked/b066aa1ddeb2b28e855e
-Thanks!
-*/
-import (
-	"bytes"
-	"crypto/aes"
-	"crypto/cipher"
-	"crypto/rand"
-	"fmt"
-	"io"
-)
-
-/*
-Decrypt is a function that decrypts a given cipher text with a provided key and initialization vector(iv).
-*/
-func Decrypt(key, iv, ciphertext []byte) ([]byte, error) {
-	block, err := aes.NewCipher(key)
-
-	if err != nil {
-		return nil, err
-	}
-
-	if len(ciphertext) < aes.BlockSize {
-		return nil, fmt.Errorf("ciphertext is shorter then block size: %d / %d", len(ciphertext), aes.BlockSize)
-	}
-
-	if iv == nil {
-		iv = ciphertext[:aes.BlockSize]
-		ciphertext = ciphertext[aes.BlockSize:]
-	}
-
-	cbc := cipher.NewCBCDecrypter(block, iv)
-	cbc.CryptBlocks(ciphertext, ciphertext)
-
-	return unpad(ciphertext)
-}
-
-/*
-Encrypt is a function that encrypts plaintext with a given key and an optional initialization vector(iv).
-*/
-func Encrypt(key, iv, plaintext []byte) ([]byte, error) {
-	plaintext = pad(plaintext, aes.BlockSize)
-
-	if len(plaintext)%aes.BlockSize != 0 {
-		return nil, fmt.Errorf("plaintext is not a multiple of the block size: %d / %d", len(plaintext), aes.BlockSize)
-	}
-
-	block, err := aes.NewCipher(key)
-	if err != nil {
-		return nil, err
-	}
-
-	var ciphertext []byte
-	if iv == nil {
-		ciphertext = make([]byte, aes.BlockSize+len(plaintext))
-		iv := ciphertext[:aes.BlockSize]
-		if _, err := io.ReadFull(rand.Reader, iv); err != nil {
-			return nil, err
-		}
-
-		cbc := cipher.NewCBCEncrypter(block, iv)
-		cbc.CryptBlocks(ciphertext[aes.BlockSize:], plaintext)
-	} else {
-		ciphertext = make([]byte, len(plaintext))
-
-		cbc := cipher.NewCBCEncrypter(block, iv)
-		cbc.CryptBlocks(ciphertext, plaintext)
-	}
-
-	return ciphertext, nil
-}
-
-func pad(ciphertext []byte, blockSize int) []byte {
-	padding := blockSize - len(ciphertext)%blockSize
-	padtext := bytes.Repeat([]byte{byte(padding)}, padding)
-	return append(ciphertext, padtext...)
-}
-
-func unpad(src []byte) ([]byte, error) {
-	length := len(src)
-	padLen := int(src[length-1])
-
-	if padLen > length {
-		return nil, fmt.Errorf("padding is greater then the length: %d / %d", padLen, length)
-	}
-
-	return src[:(length - padLen)], nil
-}