Blowfish在Java/Scala中加密，在bash中解密

Question

scala> import javax.crypto.Cipher
scala> import javax.crypto.spec.SecretKeySpec
scala> val cipher = Cipher.getInstance("Blowfish")
scala> cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec("0123456789abcdef".getBytes("utf-8"), "Blowfish"))
scala> javax.xml.bind.DatatypeConverter.printBase64Binary(cipher.doFinal("message".getBytes("utf-8")))
res7: String = K679Jz06jmc=

$ echo "message" | openssl enc -a -e -blowfish -nosalt -nopad -k "0123456789abcdef"
LJ3iFJ2/mYk=
$ echo "message" | openssl enc -a -e -blowfish -nosalt -nopad -k "30313233343536373839616263646566"
JkkJgYv3fQg=

Answer 1

首先，如果希望拥有相同的密文，必须确保Scala和OpenSSL加密使用具有相同输入参数的相同确定性加密算法。

由于OpenSSL使用CBC作为默认模式，我们在Scala中也是这样做的。

import javax.crypto.Cipher
import javax.crypto.spec._
import javax.xml.bind.DatatypeConverter

val cipher = Cipher.getInstance("Blowfish/CBC/NoPadding")

val key = new SecretKeySpec(DatatypeConverter.parseHexBinary("0123456789ABCDEF0123456789ABCDEF"), "Blowfish")

val specIv = new IvParameterSpec(DatatypeConverter.parseHexBinary("0000000000000000"))

cipher.init(Cipher.ENCRYPT_MODE, key, specIv)

val enc = cipher.doFinal("messages".getBytes("UTF-8"))

println(DatatypeConverter.printBase64Binary(enc))

请注意，在没有填充的情况下，输入长度必须是Blowfish块长度64位的倍数。

printf %s "messages" | openssl enc -e -blowfish -nopad -K "0123456789ABCDEF0123456789ABCDEF" -iv "0000000000000000" -base64