private String SelectCipherSize(Schema schema, Permute permute)
{
String plainText = "";
if (schema._alphabetSize == Schema.ALPHABET_SIZE_24)
{
plainText = PerformCipher(permute.PermutedAlphabet, DYNAMIC_ALPHABET_24);
}
else if (schema._alphabetSize == Schema.ALPHABET_SIZE_25)
{
plainText = PerformCipher(permute.PermutedAlphabet, DYNAMIC_ALPHABET_25);
}
else if (schema._alphabetSize == Schema.ALPHABET_SIZE_26)
{
plainText = PerformCipher(permute.PermutedAlphabet, DYNAMIC_ALPHABET_26);
}
else
{
throw new Exception(EXCEPTION_INVALID_CIPHER_TEXT);
}
return(plainText);
}
public String Decrypt(String textKey, String numericKey, String text)
{
String plainText = "";
Schema schema = new Schema(numericKey);
Permute permute = new Permute(textKey, schema);
if (ValidateText(text))
{
_mode = false;
plainText = SelectCipherSize(schema, permute);
}
else
{
throw new Exception(EXCEPTION_INVALID_CIPHER_TEXT);
}
return(plainText);
}
