Thank for your answer. But isn't this strategy very hazardous ? And why just for GCM and not CCM ?
Le 18/06/2014 14:37, Thulasi Goriparthi a écrit :
EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_SET_TAG, sizeof(gcm_tag), gcm_tag); When you change tag length with the above statement, you are telling the decrypt context to consider only those many number of bytes for tag comparision.
