30 int CTR_DRBG_init(CTR_DRBG_STATE *drbg,  in CTR_DRBG_init()  argument
60   drbg->ctr = aes_ctr_set_key(&drbg->ks, NULL, &drbg->block, seed_material, 32);  in CTR_DRBG_init()
61   OPENSSL_memcpy(drbg->counter.bytes, seed_material + 32, 16);  in CTR_DRBG_init()
62   drbg->reseed_counter = 1;  in CTR_DRBG_init()
72 static void ctr32_add(CTR_DRBG_STATE *drbg, uint32_t n) {  in ctr32_add()  argument
73   drbg->counter.words[3] =  in ctr32_add()
74       CRYPTO_bswap4(CRYPTO_bswap4(drbg->counter.words[3]) + n);  in ctr32_add()
77 static int CTR_DRBG_update(CTR_DRBG_STATE *drbg, const uint8_t *data,  in CTR_DRBG_update()  argument
88     ctr32_add(drbg, 1);  in CTR_DRBG_update()
89     drbg->block(drbg->counter.bytes, temp + i, &drbg->ks);  in CTR_DRBG_update()
96   drbg->ctr = aes_ctr_set_key(&drbg->ks, NULL, &drbg->block, temp, 32);  in CTR_DRBG_update()
97   OPENSSL_memcpy(drbg->counter.bytes, temp + 32, 16);  in CTR_DRBG_update()
102 int CTR_DRBG_reseed(CTR_DRBG_STATE *drbg,  in CTR_DRBG_reseed()  argument
122   if (!CTR_DRBG_update(drbg, entropy, CTR_DRBG_ENTROPY_LEN)) {  in CTR_DRBG_reseed()
126   drbg->reseed_counter = 1;  in CTR_DRBG_reseed()
131 int CTR_DRBG_generate(CTR_DRBG_STATE *drbg, uint8_t *out, size_t out_len,  in CTR_DRBG_generate()  argument
140   if (drbg->reseed_counter > kMaxReseedCount) {  in CTR_DRBG_generate()
145       !CTR_DRBG_update(drbg, additional_data, additional_data_len)) {  in CTR_DRBG_generate()
166     if (drbg->ctr) {  in CTR_DRBG_generate()
168       ctr32_add(drbg, 1);  in CTR_DRBG_generate()
169       drbg->ctr(out, out, num_blocks, &drbg->ks, drbg->counter.bytes);  in CTR_DRBG_generate()
170       ctr32_add(drbg, num_blocks - 1);  in CTR_DRBG_generate()
173         ctr32_add(drbg, 1);  in CTR_DRBG_generate()
174         drbg->block(drbg->counter.bytes, out + i, &drbg->ks);  in CTR_DRBG_generate()
184     ctr32_add(drbg, 1);  in CTR_DRBG_generate()
185     drbg->block(drbg->counter.bytes, block, &drbg->ks);  in CTR_DRBG_generate()
190   if (!CTR_DRBG_update(drbg, additional_data, additional_data_len)) {  in CTR_DRBG_generate()
194   drbg->reseed_counter++;  in CTR_DRBG_generate()
198 void CTR_DRBG_clear(CTR_DRBG_STATE *drbg) {  in CTR_DRBG_clear()  argument
199   OPENSSL_cleanse(drbg, sizeof(CTR_DRBG_STATE));  in CTR_DRBG_clear()