We present two fault injection attacks against the IC-Printing block cipher(PRINTcipher). The basic idea of our attack is to notice the property that by using some couples of input difference and output difference, the attacker can determine the permutation control key. To recover the permutation control key, one needs to inject at least 4 faults. It is needed at least 15 faults to reveal the whole key. We present two fault injection attacks against the IC-Printing block cipher (PRINTcipher). The basic idea of ​​our attack is to notify the property that by using couples couples input difference and output difference, the attacker can determine the permutation control key. To recover the permutation control key, one needs to inject at least 4 faults. It is needed at least 15 faults to reveal the whole key.