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author | BobTheBob9 <for.oliver.kirkham@gmail.com> | 2022-07-07 21:31:41 +0100 |
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committer | BobTheBob9 <for.oliver.kirkham@gmail.com> | 2022-07-07 21:31:41 +0100 |
commit | 2ae34b67e36b8ba05132d481876eb4ed7a826283 (patch) | |
tree | 63f44c8e2dcdc959d7a5317a3a7b36efedbd7d38 /NorthstarDLL/include/crypto/rand_pool.h | |
parent | 3406de7aaaf52cbef20b1549f2d7da0255d30f51 (diff) | |
download | NorthstarLauncher-2ae34b67e36b8ba05132d481876eb4ed7a826283.tar.gz NorthstarLauncher-2ae34b67e36b8ba05132d481876eb4ed7a826283.zip |
almost fully replaced hooking lib
Diffstat (limited to 'NorthstarDLL/include/crypto/rand_pool.h')
-rw-r--r-- | NorthstarDLL/include/crypto/rand_pool.h | 218 |
1 files changed, 109 insertions, 109 deletions
diff --git a/NorthstarDLL/include/crypto/rand_pool.h b/NorthstarDLL/include/crypto/rand_pool.h index f4d1d954..7bddda2c 100644 --- a/NorthstarDLL/include/crypto/rand_pool.h +++ b/NorthstarDLL/include/crypto/rand_pool.h @@ -1,109 +1,109 @@ -/* - * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved. - * - * Licensed under the Apache License 2.0 (the "License"). You may not use - * this file except in compliance with the License. You can obtain a copy - * in the file LICENSE in the source distribution or at - * https://www.openssl.org/source/license.html - */ - -#ifndef OSSL_PROVIDER_RAND_POOL_H -# define OSSL_PROVIDER_RAND_POOL_H -# pragma once - -# include <stdio.h> -# include <openssl/rand.h> - -/* - * Maximum allocation size for RANDOM_POOL buffers - * - * The max_len value for the buffer provided to the rand_drbg_get_entropy() - * callback is currently 2^31 bytes (2 gigabytes), if a derivation function - * is used. Since this is much too large to be allocated, the ossl_rand_pool_new() - * function chooses more modest values as default pool length, bounded - * by RAND_POOL_MIN_LENGTH and RAND_POOL_MAX_LENGTH - * - * The choice of the RAND_POOL_FACTOR is large enough such that the - * RAND_POOL can store a random input which has a lousy entropy rate of - * 8/256 (= 0.03125) bits per byte. This input will be sent through the - * derivation function which 'compresses' the low quality input into a - * high quality output. - * - * The factor 1.5 below is the pessimistic estimate for the extra amount - * of entropy required when no get_nonce() callback is defined. - */ -# define RAND_POOL_FACTOR 256 -# define RAND_POOL_MAX_LENGTH (RAND_POOL_FACTOR * \ - 3 * (RAND_DRBG_STRENGTH / 16)) -/* - * = (RAND_POOL_FACTOR * \ - * 1.5 * (RAND_DRBG_STRENGTH / 8)) - */ - -/* - * Initial allocation minimum. - * - * There is a distinction between the secure and normal allocation minimums. - * Ideally, the secure allocation size should be a power of two. The normal - * allocation size doesn't have any such restriction. - * - * The secure value is based on 128 bits of secure material, which is 16 bytes. - * Typically, the DRBGs will set a minimum larger than this so optimal - * allocation ought to take place (for full quality seed material). - * - * The normal value has been chosen by noticing that the rand_drbg_get_nonce - * function is usually the largest of the built in allocation (twenty four - * bytes and then appending another sixteen bytes). This means the buffer ends - * with 40 bytes. The value of forty eight is comfortably above this which - * allows some slack in the platform specific values used. - */ -# define RAND_POOL_MIN_ALLOCATION(secure) ((secure) ? 16 : 48) - -/* - * The 'random pool' acts as a dumb container for collecting random - * input from various entropy sources. It is the callers duty to 1) initialize - * the random pool, 2) pass it to the polling callbacks, 3) seed the RNG, and - * 4) cleanup the random pool again. - * - * The random pool contains no locking mechanism because its scope and - * lifetime is intended to be restricted to a single stack frame. - */ -typedef struct rand_pool_st { - unsigned char *buffer; /* points to the beginning of the random pool */ - size_t len; /* current number of random bytes contained in the pool */ - - int attached; /* true pool was attached to existing buffer */ - int secure; /* 1: allocated on the secure heap, 0: otherwise */ - - size_t min_len; /* minimum number of random bytes requested */ - size_t max_len; /* maximum number of random bytes (allocated buffer size) */ - size_t alloc_len; /* current number of bytes allocated */ - size_t entropy; /* current entropy count in bits */ - size_t entropy_requested; /* requested entropy count in bits */ -} RAND_POOL; - -RAND_POOL *ossl_rand_pool_new(int entropy_requested, int secure, - size_t min_len, size_t max_len); -RAND_POOL *ossl_rand_pool_attach(const unsigned char *buffer, size_t len, - size_t entropy); -void ossl_rand_pool_free(RAND_POOL *pool); - -const unsigned char *ossl_rand_pool_buffer(RAND_POOL *pool); -unsigned char *ossl_rand_pool_detach(RAND_POOL *pool); -void ossl_rand_pool_reattach(RAND_POOL *pool, unsigned char *buffer); - -size_t ossl_rand_pool_entropy(RAND_POOL *pool); -size_t ossl_rand_pool_length(RAND_POOL *pool); - -size_t ossl_rand_pool_entropy_available(RAND_POOL *pool); -size_t ossl_rand_pool_entropy_needed(RAND_POOL *pool); -/* |entropy_factor| expresses how many bits of data contain 1 bit of entropy */ -size_t ossl_rand_pool_bytes_needed(RAND_POOL *pool, unsigned int entropy_factor); -size_t ossl_rand_pool_bytes_remaining(RAND_POOL *pool); - -int ossl_rand_pool_add(RAND_POOL *pool, - const unsigned char *buffer, size_t len, size_t entropy); -unsigned char *ossl_rand_pool_add_begin(RAND_POOL *pool, size_t len); -int ossl_rand_pool_add_end(RAND_POOL *pool, size_t len, size_t entropy); - -#endif /* OSSL_PROVIDER_RAND_POOL_H */ +/*
+ * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#ifndef OSSL_PROVIDER_RAND_POOL_H
+# define OSSL_PROVIDER_RAND_POOL_H
+# pragma once
+
+# include <stdio.h>
+# include <openssl/rand.h>
+
+/*
+ * Maximum allocation size for RANDOM_POOL buffers
+ *
+ * The max_len value for the buffer provided to the rand_drbg_get_entropy()
+ * callback is currently 2^31 bytes (2 gigabytes), if a derivation function
+ * is used. Since this is much too large to be allocated, the ossl_rand_pool_new()
+ * function chooses more modest values as default pool length, bounded
+ * by RAND_POOL_MIN_LENGTH and RAND_POOL_MAX_LENGTH
+ *
+ * The choice of the RAND_POOL_FACTOR is large enough such that the
+ * RAND_POOL can store a random input which has a lousy entropy rate of
+ * 8/256 (= 0.03125) bits per byte. This input will be sent through the
+ * derivation function which 'compresses' the low quality input into a
+ * high quality output.
+ *
+ * The factor 1.5 below is the pessimistic estimate for the extra amount
+ * of entropy required when no get_nonce() callback is defined.
+ */
+# define RAND_POOL_FACTOR 256
+# define RAND_POOL_MAX_LENGTH (RAND_POOL_FACTOR * \
+ 3 * (RAND_DRBG_STRENGTH / 16))
+/*
+ * = (RAND_POOL_FACTOR * \
+ * 1.5 * (RAND_DRBG_STRENGTH / 8))
+ */
+
+/*
+ * Initial allocation minimum.
+ *
+ * There is a distinction between the secure and normal allocation minimums.
+ * Ideally, the secure allocation size should be a power of two. The normal
+ * allocation size doesn't have any such restriction.
+ *
+ * The secure value is based on 128 bits of secure material, which is 16 bytes.
+ * Typically, the DRBGs will set a minimum larger than this so optimal
+ * allocation ought to take place (for full quality seed material).
+ *
+ * The normal value has been chosen by noticing that the rand_drbg_get_nonce
+ * function is usually the largest of the built in allocation (twenty four
+ * bytes and then appending another sixteen bytes). This means the buffer ends
+ * with 40 bytes. The value of forty eight is comfortably above this which
+ * allows some slack in the platform specific values used.
+ */
+# define RAND_POOL_MIN_ALLOCATION(secure) ((secure) ? 16 : 48)
+
+/*
+ * The 'random pool' acts as a dumb container for collecting random
+ * input from various entropy sources. It is the callers duty to 1) initialize
+ * the random pool, 2) pass it to the polling callbacks, 3) seed the RNG, and
+ * 4) cleanup the random pool again.
+ *
+ * The random pool contains no locking mechanism because its scope and
+ * lifetime is intended to be restricted to a single stack frame.
+ */
+typedef struct rand_pool_st {
+ unsigned char *buffer; /* points to the beginning of the random pool */
+ size_t len; /* current number of random bytes contained in the pool */
+
+ int attached; /* true pool was attached to existing buffer */
+ int secure; /* 1: allocated on the secure heap, 0: otherwise */
+
+ size_t min_len; /* minimum number of random bytes requested */
+ size_t max_len; /* maximum number of random bytes (allocated buffer size) */
+ size_t alloc_len; /* current number of bytes allocated */
+ size_t entropy; /* current entropy count in bits */
+ size_t entropy_requested; /* requested entropy count in bits */
+} RAND_POOL;
+
+RAND_POOL *ossl_rand_pool_new(int entropy_requested, int secure,
+ size_t min_len, size_t max_len);
+RAND_POOL *ossl_rand_pool_attach(const unsigned char *buffer, size_t len,
+ size_t entropy);
+void ossl_rand_pool_free(RAND_POOL *pool);
+
+const unsigned char *ossl_rand_pool_buffer(RAND_POOL *pool);
+unsigned char *ossl_rand_pool_detach(RAND_POOL *pool);
+void ossl_rand_pool_reattach(RAND_POOL *pool, unsigned char *buffer);
+
+size_t ossl_rand_pool_entropy(RAND_POOL *pool);
+size_t ossl_rand_pool_length(RAND_POOL *pool);
+
+size_t ossl_rand_pool_entropy_available(RAND_POOL *pool);
+size_t ossl_rand_pool_entropy_needed(RAND_POOL *pool);
+/* |entropy_factor| expresses how many bits of data contain 1 bit of entropy */
+size_t ossl_rand_pool_bytes_needed(RAND_POOL *pool, unsigned int entropy_factor);
+size_t ossl_rand_pool_bytes_remaining(RAND_POOL *pool);
+
+int ossl_rand_pool_add(RAND_POOL *pool,
+ const unsigned char *buffer, size_t len, size_t entropy);
+unsigned char *ossl_rand_pool_add_begin(RAND_POOL *pool, size_t len);
+int ossl_rand_pool_add_end(RAND_POOL *pool, size_t len, size_t entropy);
+
+#endif /* OSSL_PROVIDER_RAND_POOL_H */
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