*aKeyPtr = (cipher + *aKeyPtr) * type1_encryption_c1 + type1_encryption_c2;
*aKeyPtr = (cipher + *aKeyPtr) * kType1EncryptionC1 + kType1EncryptionC2;
Type1Encrypt(unsigned char aPlain, PRUint16 *aKeyPtr){  unsigned char cipher;  cipher = (aPlain ^ (*aKeyPtr >> 8));  *aKeyPtr = (cipher + *aKeyPtr) * type1_encryption_c1 + type1_encryption_c2;  return cipher;}