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package ixee.cryptopals.utils
import ixee.cryptopals.utils.crypto.CBCCipher
import javax.crypto.Cipher
import javax.crypto.spec.SecretKeySpec
object CryptoUtils {
def pkcs7pad(s: String, blockSize: Int) = {
val padLength = blockSize - (s.length % blockSize)
s + s"${padLength.toChar}" * padLength
}
def cbcDecryptInstance(ecbCipher: Cipher, key: SecretKeySpec): CBCCipher = {
ecbCipher.init(Cipher.DECRYPT_MODE, key)
new CBCCipher(ecbCipher)
}
}
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