52 size_t rand_acquire_entropy_from_tsc(RAND_POOL *pool)  in rand_acquire_entropy_from_tsc()  argument
60             rand_pool_add(pool, &c, 1, 4);  in rand_acquire_entropy_from_tsc()
63     return rand_pool_entropy_available(pool);  in rand_acquire_entropy_from_tsc()
85 size_t rand_acquire_entropy_from_cpu(RAND_POOL *pool)  in rand_acquire_entropy_from_cpu()  argument
90     bytes_needed = rand_pool_bytes_needed(pool, 1 /*entropy_factor*/);  in rand_acquire_entropy_from_cpu()
92         buffer = rand_pool_add_begin(pool, bytes_needed);  in rand_acquire_entropy_from_cpu()
99                     rand_pool_add_end(pool, bytes_needed, 8 * bytes_needed);  in rand_acquire_entropy_from_cpu()
104                     rand_pool_add_end(pool, bytes_needed, 8 * bytes_needed);  in rand_acquire_entropy_from_cpu()
107                 rand_pool_add_end(pool, 0, 0);  in rand_acquire_entropy_from_cpu()
112     return rand_pool_entropy_available(pool);  in rand_acquire_entropy_from_cpu()
136     RAND_POOL *pool;  in rand_drbg_get_entropy()  local
148         pool = drbg->seed_pool;  in rand_drbg_get_entropy()
149         pool->entropy_requested = entropy;  in rand_drbg_get_entropy()
151         pool = rand_pool_new(entropy, drbg->secure, min_len, max_len);  in rand_drbg_get_entropy()
152         if (pool == NULL)  in rand_drbg_get_entropy()
157         size_t bytes_needed = rand_pool_bytes_needed(pool, 1 /*entropy_factor*/);  in rand_drbg_get_entropy()
158         unsigned char *buffer = rand_pool_add_begin(pool, bytes_needed);  in rand_drbg_get_entropy()
179             rand_pool_add_end(pool, bytes, 8 * bytes);  in rand_drbg_get_entropy()
180             entropy_available = rand_pool_entropy_available(pool);  in rand_drbg_get_entropy()
196         entropy_available = rand_pool_acquire_entropy(pool);  in rand_drbg_get_entropy()
200         ret   = rand_pool_length(pool);  in rand_drbg_get_entropy()
201         *pout = rand_pool_detach(pool);  in rand_drbg_get_entropy()
206         rand_pool_free(pool);  in rand_drbg_get_entropy()
235     RAND_POOL *pool;  in rand_drbg_get_nonce()  local
243     pool = rand_pool_new(0, 0, min_len, max_len);  in rand_drbg_get_nonce()
244     if (pool == NULL)  in rand_drbg_get_nonce()
247     if (rand_pool_add_nonce_data(pool) == 0)  in rand_drbg_get_nonce()
253     if (rand_pool_add(pool, (unsigned char *)&data, sizeof(data), 0) == 0)  in rand_drbg_get_nonce()
256     ret   = rand_pool_length(pool);  in rand_drbg_get_nonce()
257     *pout = rand_pool_detach(pool);  in rand_drbg_get_nonce()
260     rand_pool_free(pool);  in rand_drbg_get_nonce()
285 size_t rand_drbg_get_additional_data(RAND_POOL *pool, unsigned char **pout)  in rand_drbg_get_additional_data()  argument
289     if (rand_pool_add_additional_data(pool) == 0)  in rand_drbg_get_additional_data()
292     ret = rand_pool_length(pool);  in rand_drbg_get_additional_data()
293     *pout = rand_pool_detach(pool);  in rand_drbg_get_additional_data()
299 void rand_drbg_cleanup_additional_data(RAND_POOL *pool, unsigned char *out)  in rand_drbg_cleanup_additional_data()  argument
301     rand_pool_reattach(pool, out);  in rand_drbg_cleanup_additional_data()
383     RAND_POOL *pool = NULL;  in RAND_poll()  local
405         pool = rand_pool_new(RAND_DRBG_STRENGTH, 1,  in RAND_poll()
408         if (pool == NULL)  in RAND_poll()
411         if (rand_pool_acquire_entropy(pool) == 0)  in RAND_poll()
415             || meth->add(rand_pool_buffer(pool),  in RAND_poll()
416                          rand_pool_length(pool),  in RAND_poll()
417                          (rand_pool_entropy(pool) / 8.0)) == 0)  in RAND_poll()
424     rand_pool_free(pool);  in RAND_poll()
435     RAND_POOL *pool;  in rand_pool_new()  local
441     pool = OPENSSL_zalloc(sizeof(*pool));  in rand_pool_new()
442     if (pool == NULL) {  in rand_pool_new()
447     pool->min_len = min_len;  in rand_pool_new()
448     pool->max_len = (max_len > RAND_POOL_MAX_LENGTH) ?  in rand_pool_new()
450     pool->alloc_len = min_len < min_alloc_size ? min_alloc_size : min_len;  in rand_pool_new()
451     if (pool->alloc_len > pool->max_len)  in rand_pool_new()
452         pool->alloc_len = pool->max_len;  in rand_pool_new()
455         pool->buffer = OPENSSL_secure_zalloc(pool->alloc_len);  in rand_pool_new()
457         pool->buffer = OPENSSL_zalloc(pool->alloc_len);  in rand_pool_new()
459     if (pool->buffer == NULL) {  in rand_pool_new()
464     pool->entropy_requested = entropy_requested;  in rand_pool_new()
465     pool->secure = secure;  in rand_pool_new()
467     return pool;  in rand_pool_new()
470     OPENSSL_free(pool);  in rand_pool_new()
483     RAND_POOL *pool = OPENSSL_zalloc(sizeof(*pool));  in rand_pool_attach()  local
485     if (pool == NULL) {  in rand_pool_attach()
495     pool->buffer = (unsigned char *) buffer;  in rand_pool_attach()
496     pool->len = len;  in rand_pool_attach()
498     pool->attached = 1;  in rand_pool_attach()
500     pool->min_len = pool->max_len = pool->alloc_len = pool->len;  in rand_pool_attach()
501     pool->entropy = entropy;  in rand_pool_attach()
503     return pool;  in rand_pool_attach()
509 void rand_pool_free(RAND_POOL *pool)  in rand_pool_free()  argument
511     if (pool == NULL)  in rand_pool_free()
520     if (!pool->attached) {  in rand_pool_free()
521         if (pool->secure)  in rand_pool_free()
522             OPENSSL_secure_clear_free(pool->buffer, pool->alloc_len);  in rand_pool_free()
524             OPENSSL_clear_free(pool->buffer, pool->alloc_len);  in rand_pool_free()
527     OPENSSL_free(pool);  in rand_pool_free()
533 const unsigned char *rand_pool_buffer(RAND_POOL *pool)  in rand_pool_buffer()  argument
535     return pool->buffer;  in rand_pool_buffer()
541 size_t rand_pool_entropy(RAND_POOL *pool)  in rand_pool_entropy()  argument
543     return pool->entropy;  in rand_pool_entropy()
549 size_t rand_pool_length(RAND_POOL *pool)  in rand_pool_length()  argument
551     return pool->len;  in rand_pool_length()
560 unsigned char *rand_pool_detach(RAND_POOL *pool)  in rand_pool_detach()  argument
562     unsigned char *ret = pool->buffer;  in rand_pool_detach()
563     pool->buffer = NULL;  in rand_pool_detach()
564     pool->entropy = 0;  in rand_pool_detach()
572 void rand_pool_reattach(RAND_POOL *pool, unsigned char *buffer)  in rand_pool_reattach()  argument
574     pool->buffer = buffer;  in rand_pool_reattach()
575     OPENSSL_cleanse(pool->buffer, pool->len);  in rand_pool_reattach()
576     pool->len = 0;  in rand_pool_reattach()
595 size_t rand_pool_entropy_available(RAND_POOL *pool)  in rand_pool_entropy_available()  argument
597     if (pool->entropy < pool->entropy_requested)  in rand_pool_entropy_available()
600     if (pool->len < pool->min_len)  in rand_pool_entropy_available()
603     return pool->entropy;  in rand_pool_entropy_available()
611 size_t rand_pool_entropy_needed(RAND_POOL *pool)  in rand_pool_entropy_needed()  argument
613     if (pool->entropy < pool->entropy_requested)  in rand_pool_entropy_needed()
614         return pool->entropy_requested - pool->entropy;  in rand_pool_entropy_needed()
620 static int rand_pool_grow(RAND_POOL *pool, size_t len)  in rand_pool_grow()  argument
622     if (len > pool->alloc_len - pool->len) {  in rand_pool_grow()
624         const size_t limit = pool->max_len / 2;  in rand_pool_grow()
625         size_t newlen = pool->alloc_len;  in rand_pool_grow()
627         if (pool->attached || len > pool->max_len - pool->len) {  in rand_pool_grow()
633             newlen = newlen < limit ? newlen * 2 : pool->max_len;  in rand_pool_grow()
634         while (len > newlen - pool->len);  in rand_pool_grow()
636         if (pool->secure)  in rand_pool_grow()
644         memcpy(p, pool->buffer, pool->len);  in rand_pool_grow()
645         if (pool->secure)  in rand_pool_grow()
646             OPENSSL_secure_clear_free(pool->buffer, pool->alloc_len);  in rand_pool_grow()
648             OPENSSL_clear_free(pool->buffer, pool->alloc_len);  in rand_pool_grow()
649         pool->buffer = p;  in rand_pool_grow()
650         pool->alloc_len = newlen;  in rand_pool_grow()
661 size_t rand_pool_bytes_needed(RAND_POOL *pool, unsigned int entropy_factor)  in rand_pool_bytes_needed()  argument
664     size_t entropy_needed = rand_pool_entropy_needed(pool);  in rand_pool_bytes_needed()
673     if (bytes_needed > pool->max_len - pool->len) {  in rand_pool_bytes_needed()
679     if (pool->len < pool->min_len &&  in rand_pool_bytes_needed()
680         bytes_needed < pool->min_len - pool->len)  in rand_pool_bytes_needed()
682         bytes_needed = pool->min_len - pool->len;  in rand_pool_bytes_needed()
696     if (!rand_pool_grow(pool, bytes_needed)) {  in rand_pool_bytes_needed()
698         pool->max_len = pool->len = 0;  in rand_pool_bytes_needed()
706 size_t rand_pool_bytes_remaining(RAND_POOL *pool)  in rand_pool_bytes_remaining()  argument
708     return pool->max_len - pool->len;  in rand_pool_bytes_remaining()
720 int rand_pool_add(RAND_POOL *pool,  in rand_pool_add()  argument
723     if (len > pool->max_len - pool->len) {  in rand_pool_add()
728     if (pool->buffer == NULL) {  in rand_pool_add()
742         if (pool->alloc_len > pool->len && pool->buffer + pool->len == buffer) {  in rand_pool_add()
753         if (!rand_pool_grow(pool, len))  in rand_pool_add()
755         memcpy(pool->buffer + pool->len, buffer, len);  in rand_pool_add()
756         pool->len += len;  in rand_pool_add()
757         pool->entropy += entropy;  in rand_pool_add()
775 unsigned char *rand_pool_add_begin(RAND_POOL *pool, size_t len)  in rand_pool_add_begin()  argument
780     if (len > pool->max_len - pool->len) {  in rand_pool_add_begin()
785     if (pool->buffer == NULL) {  in rand_pool_add_begin()
799     if (!rand_pool_grow(pool, len))  in rand_pool_add_begin()
802     return pool->buffer + pool->len;  in rand_pool_add_begin()
814 int rand_pool_add_end(RAND_POOL *pool, size_t len, size_t entropy)  in rand_pool_add_end()  argument
816     if (len > pool->alloc_len - pool->len) {  in rand_pool_add_end()
822         pool->len += len;  in rand_pool_add_end()
823         pool->entropy += entropy;  in rand_pool_add_end()