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/* Copyright 2000-2005 The Apache Software Foundation or its licensors, as
* applicable.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef APR_RANDOM_H
#define APR_RANDOM_H
#include <apr_pools.h>
typedef struct apr_crypto_hash_t apr_crypto_hash_t;
typedef void apr_crypto_hash_init_t(apr_crypto_hash_t *hash);
typedef void apr_crypto_hash_add_t(apr_crypto_hash_t *hash,const void *data,
apr_size_t bytes);
typedef void apr_crypto_hash_finish_t(apr_crypto_hash_t *hash,
unsigned char *result);
/* FIXME: make this opaque */
struct apr_crypto_hash_t {
apr_crypto_hash_init_t *init;
apr_crypto_hash_add_t *add;
apr_crypto_hash_finish_t *finish;
apr_size_t size;
void *data;
};
APR_DECLARE(apr_crypto_hash_t *) apr_crypto_sha256_new(apr_pool_t *p);
typedef struct apr_random_t apr_random_t;
APR_DECLARE(void) apr_random_init(apr_random_t *g,apr_pool_t *p,
apr_crypto_hash_t *pool_hash,
apr_crypto_hash_t *key_hash,
apr_crypto_hash_t *prng_hash);
APR_DECLARE(apr_random_t *) apr_random_standard_new(apr_pool_t *p);
APR_DECLARE(void) apr_random_add_entropy(apr_random_t *g,
const void *entropy_,
apr_size_t bytes);
APR_DECLARE(apr_status_t) apr_random_insecure_bytes(apr_random_t *g,
void *random,
apr_size_t bytes);
APR_DECLARE(apr_status_t) apr_random_secure_bytes(apr_random_t *g,
void *random,
apr_size_t bytes);
APR_DECLARE(void) apr_random_barrier(apr_random_t *g);
APR_DECLARE(apr_status_t) apr_random_secure_ready(apr_random_t *r);
APR_DECLARE(apr_status_t) apr_random_insecure_ready(apr_random_t *r);
/* Call this in the child after forking to mix the randomness
pools. Note that its generally a bad idea to fork a process with a
real PRNG in it - better to have the PRNG externally and get the
randomness from there. However, if you really must do it, then you
should supply all your entropy to all the PRNGs - don't worry, they
won't produce the same output.
Note that apr_proc_fork() calls this for you, so only weird
applications need ever call it themselves.
*/
struct apr_proc_t;
APR_DECLARE(void) apr_random_after_fork(struct apr_proc_t *proc);
#endif /* ndef APR_RANDOM_H */
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