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package ixee.cryptopals.utils
import ixee.cryptopals.utils.crypto._
import javax.crypto.Cipher
import javax.crypto.spec.SecretKeySpec
object CryptoUtils {
def pkcs7pad(s: Seq[Byte], blockSize: Int): Seq[Byte] = {
val padLength = blockSize - (s.length % blockSize)
s ++ Stream.continually(padLength.toByte).take(padLength)
}
def stripPkcs7Pad(s: Seq[Byte]): Seq[Byte] =
s.dropRight(s.last)
def cbcEncrypt(builder: CbcBuilder)(data: Seq[Byte]) =
builder.encrypt.end(data)
def cbcDecrypt(builder: CbcBuilder)(data: Seq[Byte]) =
stripPkcs7Pad(builder.decrypt.end(data))
}
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