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Name	Size	Permission
apr-x86_64.h	17.89 KB	-rw-r--r--
apr.h	636 B	-rw-r--r--
apr_allocator.h	6.07 KB	-rw-r--r--
apr_anylock.h	4.93 KB	-rw-r--r--
apr_atomic.h	6.04 KB	-rw-r--r--
apr_base64.h	3.75 KB	-rw-r--r--
apr_buckets.h	63.15 KB	-rw-r--r--
apr_crypto.h	19.68 KB	-rw-r--r--
apr_cstr.h	11.13 KB	-rw-r--r--
apr_date.h	3.47 KB	-rw-r--r--
apr_dbd.h	23.35 KB	-rw-r--r--
apr_dbm.h	8.4 KB	-rw-r--r--
apr_dso.h	2.64 KB	-rw-r--r--
apr_encode.h	30.35 KB	-rw-r--r--
apr_env.h	2.06 KB	-rw-r--r--
apr_errno.h	53.77 KB	-rw-r--r--
apr_escape.h	17.23 KB	-rw-r--r--
apr_file_info.h	17.17 KB	-rw-r--r--
apr_file_io.h	42.88 KB	-rw-r--r--
apr_fnmatch.h	6.08 KB	-rw-r--r--
apr_general.h	7.34 KB	-rw-r--r--
apr_getopt.h	5.84 KB	-rw-r--r--
apr_global_mutex.h	7.19 KB	-rw-r--r--
apr_hash.h	10.08 KB	-rw-r--r--
apr_hooks.h	12.36 KB	-rw-r--r--
apr_inherit.h	2.09 KB	-rw-r--r--
apr_ldap.h	5.57 KB	-rw-r--r--
apr_ldap_init.h	5.64 KB	-rw-r--r--
apr_ldap_option.h	8.4 KB	-rw-r--r--
apr_ldap_rebind.h	3.09 KB	-rw-r--r--
apr_ldap_url.h	3.71 KB	-rw-r--r--
apr_lib.h	8.23 KB	-rw-r--r--
apr_md4.h	4.42 KB	-rw-r--r--
apr_md5.h	6.2 KB	-rw-r--r--
apr_memcache.h	16.82 KB	-rw-r--r--
apr_mmap.h	5.01 KB	-rw-r--r--
apr_network_io.h	36.02 KB	-rw-r--r--
apr_optional.h	2.71 KB	-rw-r--r--
apr_optional_hooks.h	3.78 KB	-rw-r--r--
apr_perms_set.h	1.86 KB	-rw-r--r--
apr_poll.h	20.6 KB	-rw-r--r--
apr_pools.h	30.94 KB	-rw-r--r--
apr_portable.h	20.02 KB	-rw-r--r--
apr_proc_mutex.h	6.85 KB	-rw-r--r--
apr_queue.h	3.98 KB	-rw-r--r--
apr_random.h	4.92 KB	-rw-r--r--
apr_redis.h	15.62 KB	-rw-r--r--
apr_reslist.h	7.01 KB	-rw-r--r--
apr_ring.h	18.78 KB	-rw-r--r--
apr_rmm.h	4.67 KB	-rw-r--r--
apr_sdbm.h	5.97 KB	-rw-r--r--
apr_sha1.h	3.79 KB	-rw-r--r--
apr_shm.h	9.26 KB	-rw-r--r--
apr_signal.h	2.7 KB	-rw-r--r--
apr_siphash.h	6.01 KB	-rw-r--r--
apr_skiplist.h	14.19 KB	-rw-r--r--
apr_strings.h	14.55 KB	-rw-r--r--
apr_strmatch.h	2.61 KB	-rw-r--r--
apr_support.h	1.6 KB	-rw-r--r--
apr_tables.h	18.9 KB	-rw-r--r--
apr_thread_cond.h	5.4 KB	-rw-r--r--
apr_thread_mutex.h	4.39 KB	-rw-r--r--
apr_thread_pool.h	10.84 KB	-rw-r--r--
apr_thread_proc.h	36.8 KB	-rw-r--r--
apr_thread_rwlock.h	4.65 KB	-rw-r--r--
apr_time.h	7.39 KB	-rw-r--r--
apr_uri.h	6.43 KB	-rw-r--r--
apr_user.h	5.19 KB	-rw-r--r--
apr_uuid.h	2.05 KB	-rw-r--r--
apr_version.h	5.22 KB	-rw-r--r--
apr_want.h	2.89 KB	-rw-r--r--
apr_xlate.h	6.26 KB	-rw-r--r--
apr_xml.h	12.19 KB	-rw-r--r--
apu.h	4.22 KB	-rw-r--r--
apu_errno.h	5.32 KB	-rw-r--r--
apu_version.h	4.2 KB	-rw-r--r--
apu_want.h	1.45 KB	-rw-r--r--

Code Editor : apr_random.h

/* Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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

/**
 * @file apr_random.h
 * @brief APR PRNG routines
 */

#include "apr_pools.h"
#include "apr_thread_proc.h"

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

/**
 * @defgroup apr_random PRNG Routines
 * @ingroup APR
 * @{
 */

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;
};

/**
 * Allocate and initialize the SHA-256 context
 * @param p The pool to allocate from
 */
APR_DECLARE(apr_crypto_hash_t *) apr_crypto_sha256_new(apr_pool_t *p);

/** Opaque PRNG structure. */
typedef struct apr_random_t apr_random_t;

/**
 * Initialize a PRNG state
 * @param g The PRNG state
 * @param p The pool to allocate from
 * @param pool_hash Pool hash functions
 * @param key_hash Key hash functions
 * @param prng_hash PRNG hash functions
 */
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);
/**
 * Allocate and initialize (apr_crypto_sha256_new) a new PRNG state.
 * @param p The pool to allocate from
 */
APR_DECLARE(apr_random_t *) apr_random_standard_new(apr_pool_t *p);

/**
 * Mix the randomness pools.
 * @param g The PRNG state
 * @param entropy_ Entropy buffer
 * @param bytes Length of entropy_ in bytes
 */
APR_DECLARE(void) apr_random_add_entropy(apr_random_t *g,
                                         const void *entropy_,
                                         apr_size_t bytes);
/**
 * Generate cryptographically insecure random bytes.
 * @param g The RNG state
 * @param random Buffer to fill with random bytes
 * @param bytes Length of buffer in bytes
 */
APR_DECLARE(apr_status_t) apr_random_insecure_bytes(apr_random_t *g,
                                                    void *random,
                                                    apr_size_t bytes);

/**
 * Generate cryptographically secure random bytes.
 * @param g The RNG state
 * @param random Buffer to fill with random bytes
 * @param bytes Length of buffer in bytes
 */
APR_DECLARE(apr_status_t) apr_random_secure_bytes(apr_random_t *g,
                                                  void *random,
                                                  apr_size_t bytes);
/**
 * Ensures that E bits of conditional entropy are mixed into the PRNG
 * before any further randomness is extracted.
 * @param g The RNG state
 */
APR_DECLARE(void) apr_random_barrier(apr_random_t *g);

/**
 * Return APR_SUCCESS if the cryptographic PRNG has been seeded with
 * enough data, APR_ENOTENOUGHENTROPY otherwise.
 * @param r The RNG state
 */
APR_DECLARE(apr_status_t) apr_random_secure_ready(apr_random_t *r);

/**
 * Return APR_SUCCESS if the PRNG has been seeded with enough data,
 * APR_ENOTENOUGHENTROPY otherwise.
 * @param r The PRNG state
 */
APR_DECLARE(apr_status_t) apr_random_insecure_ready(apr_random_t *r);

/**
 * Mix the randomness pools after forking.
 * @param proc The resulting process handle from apr_proc_fork()
 * @remark 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.
 * @remark Note that apr_proc_fork() calls this for you, so only weird
 * applications need ever call it themselves.
 * @internal
 */
APR_DECLARE(void) apr_random_after_fork(apr_proc_t *proc);

/** @} */

#ifdef __cplusplus
}
#endif

#endif /* !APR_RANDOM_H */

${this.title}

Code Editor : apr_random.h