27 int gcm_done(gcm_state *gcm,   in gcm_done()  argument
33    LTC_ARGCHK(gcm     != NULL);  in gcm_done()
37    if (gcm->buflen > 16 || gcm->buflen < 0) {  in gcm_done()
41    if ((err = cipher_is_valid(gcm->cipher)) != CRYPT_OK) {  in gcm_done()
46    if (gcm->mode != GCM_MODE_TEXT) {  in gcm_done()
51    if (gcm->buflen) {  in gcm_done()
52       gcm->pttotlen += gcm->buflen * CONST64(8);  in gcm_done()
53       gcm_mult_h(gcm, gcm->X);  in gcm_done()
57    STORE64H(gcm->totlen, gcm->buf);  in gcm_done()
58    STORE64H(gcm->pttotlen, gcm->buf+8);  in gcm_done()
60        gcm->X[x] ^= gcm->buf[x];  in gcm_done()
62    gcm_mult_h(gcm, gcm->X);  in gcm_done()
65 … if ((err = cipher_descriptor[gcm->cipher].ecb_encrypt(gcm->Y_0, gcm->buf, &gcm->K)) != CRYPT_OK) {  in gcm_done()
69        tag[x] = gcm->buf[x] ^ gcm->X[x];  in gcm_done()
73    cipher_descriptor[gcm->cipher].done(&gcm->K);  in gcm_done()