Created
October 12, 2016 18:03
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| package main | |
| import ( | |
| "crypto/cipher" | |
| "crypto/des" | |
| "encoding/binary" | |
| "fmt" | |
| ) | |
| var des3 cipher.Block | |
| func init() { | |
| var err error | |
| des3, err = des.NewTripleDESCipher([]byte("dummy testing cipher key")) | |
| if err != nil { | |
| panic(err) | |
| } | |
| } | |
| func main() { | |
| fmt.Println(encrypt(42)) | |
| fmt.Println(decrypt(encrypt(42))) | |
| } | |
| func encrypt(i uint64) uint64 { | |
| bb := make([]byte, 8) | |
| binary.LittleEndian.PutUint64(bb, i) | |
| des3.Encrypt(bb, bb) | |
| return binary.LittleEndian.Uint64(bb) | |
| } | |
| func decrypt(i uint64) uint64 { | |
| bb := make([]byte, 8) | |
| binary.LittleEndian.PutUint64(bb, i) | |
| des3.Decrypt(bb, bb) | |
| return binary.LittleEndian.Uint64(bb) | |
| } |
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