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49 lines
1.9 KiB
C
49 lines
1.9 KiB
C
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/***********************************************************************
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* Copyright (c) 2013, 2014 Pieter Wuille *
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* Distributed under the MIT software license, see the accompanying *
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* file COPYING or https://www.opensource.org/licenses/mit-license.php.*
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***********************************************************************/
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#ifndef SECP256K1_TESTRAND_H
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#define SECP256K1_TESTRAND_H
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#include "util.h"
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/* A non-cryptographic RNG used only for test infrastructure. */
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/** Seed the pseudorandom number generator for testing. */
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SECP256K1_INLINE static void secp256k1_testrand_seed(const unsigned char *seed16);
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/** Generate a pseudorandom number in the range [0..2**32-1]. */
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SECP256K1_INLINE static uint32_t secp256k1_testrand32(void);
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/** Generate a pseudorandom number in the range [0..2**64-1]. */
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SECP256K1_INLINE static uint64_t secp256k1_testrand64(void);
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/** Generate a pseudorandom number in the range [0..2**bits-1]. Bits must be 1 or
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* more. */
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SECP256K1_INLINE static uint64_t secp256k1_testrand_bits(int bits);
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/** Generate a pseudorandom number in the range [0..range-1]. */
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static uint32_t secp256k1_testrand_int(uint32_t range);
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/** Generate a pseudorandom 32-byte array. */
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static void secp256k1_testrand256(unsigned char *b32);
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/** Generate a pseudorandom 32-byte array with long sequences of zero and one bits. */
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static void secp256k1_testrand256_test(unsigned char *b32);
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/** Generate pseudorandom bytes with long sequences of zero and one bits. */
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static void secp256k1_testrand_bytes_test(unsigned char *bytes, size_t len);
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/** Flip a single random bit in a byte array */
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static void secp256k1_testrand_flip(unsigned char *b, size_t len);
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/** Initialize the test RNG using (hex encoded) array up to 16 bytes, or randomly if hexseed is NULL. */
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static void secp256k1_testrand_init(const char* hexseed);
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/** Print final test information. */
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static void secp256k1_testrand_finish(void);
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#endif /* SECP256K1_TESTRAND_H */
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