Bitcoin Core  27.99.0
P2P Digital Currency
testrand.h
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1 /***********************************************************************
2  * Copyright (c) 2013, 2014 Pieter Wuille *
3  * Distributed under the MIT software license, see the accompanying *
4  * file COPYING or https://www.opensource.org/licenses/mit-license.php.*
5  ***********************************************************************/
6 
7 #ifndef SECP256K1_TESTRAND_H
8 #define SECP256K1_TESTRAND_H
9 
10 #include "util.h"
11 
12 /* A non-cryptographic RNG used only for test infrastructure. */
13 
15 SECP256K1_INLINE static void secp256k1_testrand_seed(const unsigned char *seed16);
16 
18 SECP256K1_INLINE static uint32_t secp256k1_testrand32(void);
19 
21 SECP256K1_INLINE static uint64_t secp256k1_testrand64(void);
22 
25 SECP256K1_INLINE static uint64_t secp256k1_testrand_bits(int bits);
26 
28 static uint32_t secp256k1_testrand_int(uint32_t range);
29 
31 static void secp256k1_testrand256(unsigned char *b32);
32 
34 static void secp256k1_testrand256_test(unsigned char *b32);
35 
37 static void secp256k1_testrand_bytes_test(unsigned char *bytes, size_t len);
38 
40 static void secp256k1_testrand_flip(unsigned char *b, size_t len);
41 
43 static void secp256k1_testrand_init(const char* hexseed);
44 
46 static void secp256k1_testrand_finish(void);
47 
48 #endif /* SECP256K1_TESTRAND_H */
#define SECP256K1_INLINE
Definition: util.h:48
static uint32_t secp256k1_testrand_int(uint32_t range)
Generate a pseudorandom number in the range [0..range-1].
static void secp256k1_testrand_flip(unsigned char *b, size_t len)
Flip a single random bit in a byte array.
static void secp256k1_testrand_bytes_test(unsigned char *bytes, size_t len)
Generate pseudorandom bytes with long sequences of zero and one bits.
static SECP256K1_INLINE uint64_t secp256k1_testrand64(void)
Generate a pseudorandom number in the range [0..2**64-1].
static void secp256k1_testrand256(unsigned char *b32)
Generate a pseudorandom 32-byte array.
static SECP256K1_INLINE void secp256k1_testrand_seed(const unsigned char *seed16)
Seed the pseudorandom number generator for testing.
static void secp256k1_testrand_init(const char *hexseed)
Initialize the test RNG using (hex encoded) array up to 16 bytes, or randomly if hexseed is NULL.
static void secp256k1_testrand_finish(void)
Print final test information.
static SECP256K1_INLINE uint32_t secp256k1_testrand32(void)
Generate a pseudorandom number in the range [0..2**32-1].
static void secp256k1_testrand256_test(unsigned char *b32)
Generate a pseudorandom 32-byte array with long sequences of zero and one bits.
static SECP256K1_INLINE uint64_t secp256k1_testrand_bits(int bits)
Generate a pseudorandom number in the range [0..2**bits-1].