piotrpsz / Blowfish

Go implementation of Blowfish

Blowfish

Implementation of the Blowfish encryption algorithm (the creator of the algorithm is Bruce Schneier). It must be clear that the code is not tuned for speed - main goal is explanation how works the algorithm.

To test the correctness of the operation, run the following program:

Example: How to test

func main () {
    fmt.Println ()

    L: = uint32 (1)
    R: = uint32 (2)
    bf: = blowfish.New([]byte("TESTKEY"))

    bf.Encrypt (&L, &R)
    fmt.Printf ("%08x, %08x\n", L, R)

    if (L == 0xdf333fd2 && R == 0x30a71bb4) {
        fmt.Println ("Test encryption OK.")
    } else {
        fmt.Println ("Test encryption failed.")
    }

    bf.Decrypt (&L, &R)
    if (L == 1 && R == 2) {
        fmt.Println ("Test decryption OK.")
    } else {
        fmt.Println ("Test decryption failed.");
    }
}