func loadCrypter(optCrypter string) dkeyczar.Crypter {
if optCrypter == "" {
return nil
}
//fmt.Println("using crypter:", optCrypter)
r := dkeyczar.NewFileReader(optCrypter)
crypter, err := dkeyczar.NewCrypter(r)
if err != nil {
panic(fmt.Sprintf("failed to load crypter: %s", err))
//return nil
}
return crypter
}
func (k *CypherKey) InstantiateCrypter() {
c := loadCrypter("")
r := loadReader(k.Loc, c)
if r == nil {
panic(fmt.Sprintf("could not read keys from '%s'", k.Loc))
}
// a crypter can decode as well as encode
crypter, err := dkeyczar.NewCrypter(r)
if err != nil {
panic(err)
}
crypter.SetEncoding(dkeyczar.NO_ENCODING)
//crypter.SetEncoding(dkeyczar.BASE64W)
k.crypter = crypter
}
func writeDecryptTest(dir string) {
fulldir := TESTDATA + dir
r := dkeyczar.NewFileReader(fulldir)
crypter, _ := dkeyczar.NewCrypter(r)
ciphertext, _ := crypter.Encrypt([]byte(PLAINTEXT))
fmt.Println(`
check_decrypt(readers.FileReader("` + fulldir + `"),
"` + dir + `",
"` + PLAINTEXT + `",
"` + ciphertext + `",
)
`)
}
func writeKeyczartTest(dir string) {
fulldir := TESTDATA + dir
km := dkeyczar.NewKeyManager()
r := dkeyczar.NewFileReader(fulldir)
km.Load(r)
json := km.ToJSONs(nil)
fmt.Println(`
meta = """` + json[0] + `"""
keys={`)
for i := 1; i < len(json); i++ {
fmt.Println(" " + strconv.Itoa(i) + `: """` + json[i] + `""",`)
}
fmt.Println(`}
r = JSONReader(meta, keys)`)
signer, _ := dkeyczar.NewSigner(r)
if signer != nil {
signature, _ := signer.Sign([]byte(PLAINTEXT))
fmt.Println(
`check_verify(r,
"json ` + dir + `",
"` + PLAINTEXT + `",
"` + signature + `",
)`)
} else {
crypter, _ := dkeyczar.NewCrypter(r)
ciphertext, _ := crypter.Encrypt([]byte(PLAINTEXT))
fmt.Println(
`check_decrypt(r,
"json ` + dir + `",
"` + PLAINTEXT + `",
"` + ciphertext + `",
)`)
}
}