Mass Mailer - Send an email.html to all recipients in a maillist.csvHEADmaster

1 files changed, 92 insertions, 0 deletions

diff --git a/crypt.go b/crypt.go
new file mode 100644
index 0000000..662184c
--- /dev/null
+++ b/crypt.go
@@ -0,0 +1,92 @@
+package main
+
+import (
+    "encoding/base64"
+    "crypto/aes"
+    "crypto/cipher"
+    "crypto/rand"
+    "fmt"
+    "io"
+    "os"
+    //"strconv"
+)
+
+func cryptexample() {
+    fmt.Println("Testing Cryptics")
+    //key := "123456789012345678901234" // Needs to be 32 bytes long
+    //key := "Have some of the beautiful ideas"
+    plaintext1 := "Hello! You Fool! I Love You"
+    plaintext2 := "Somefancy Password"
+    foo := Encrypt(plaintext1)
+    fook := Decrypt(foo)
+    fmt.Printf("%s -> %s\n",plaintext1,foo)
+    fmt.Printf("%s -> %s\n\n",foo,fook)
+    bar := Encrypt(plaintext2)
+    barn := Decrypt(bar)
+    fmt.Printf("%s -> %s\n",plaintext2,bar)
+    fmt.Printf("%s -> %s\n\n",bar,barn)
+    os.Exit(0)
+}
+    
+    //key := "123456789012345678901234" // Needs to be 32 bytes long
+var keystr string = "Have some of the beautiful ideas"
+
+func encodeBase64(inp string) string {
+    b := []byte(inp)
+    return base64.StdEncoding.EncodeToString(b)
+}
+
+func decodeBase64(s string) string {
+    data, err := base64.StdEncoding.DecodeString(s)
+    if err != nil { panic(err) }
+        return string(data)
+}
+
+func Encrypt(textstr string) string {
+    text := []byte(textstr)
+    key := []byte(keystr)
+
+    //fmt.Println(text)
+    block, err := aes.NewCipher([]byte(key))
+    checkErr(err)
+    
+    b := base64.StdEncoding.EncodeToString(text)
+    ciphertext := make([]byte, aes.BlockSize+len(b))
+    iv := ciphertext[:aes.BlockSize]
+    _, err = io.ReadFull(rand.Reader, iv)
+    checkErr(err)
+    cfb := cipher.NewCFBEncrypter(block, iv)
+    cfb.XORKeyStream(ciphertext[aes.BlockSize:], []byte(b))
+    return encodeBase64(string(ciphertext))
+
+}
+
+func Decrypt(textstr string) string {
+    
+    text := []byte(decodeBase64(textstr))
+    key := []byte(keystr)
+    //checkErr(err)
+
+    block, err := aes.NewCipher(key)
+    checkErr(err)
+    if len(text) < aes.BlockSize {
+        return "GEEEH SCHIESSEN! ZU Kurz?"
+        //return nil, errors.New("ciphertext too short")
+    }
+    iv := text[:aes.BlockSize]
+    text = text[aes.BlockSize:]
+    cfb := cipher.NewCFBDecrypter(block, iv)
+    cfb.XORKeyStream(text, text)
+    //data, err := base64.StdEncoding.DecodeString(string(text[aes.BlockSize:]))
+    data, err := base64.StdEncoding.DecodeString(string(text))
+    checkErr(err)
+    return string(data)
+    //if err != nil { panic(err) }
+    //ciphertext := decodeBase64(text)
+    //cfb := cipher.NewCFBEncrypter(block, iv)
+    //plaintext := make([]byte, len(ciphertext))
+    //cfb.XORKeyStream(plaintext, ciphertext)
+    //return string(plaintext)
+}
+
+