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rangeproof: Use util functions for writing big endian

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This commit is contained in:
Tim Ruffing 2023-07-21 13:05:25 +02:00
parent 58e27bc2d2
commit 3970a7292a
1 changed files with 6 additions and 12 deletions
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18
src/modules/rangeproof/borromean_impl.h
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@ -20,24 +20,18 @@
#include <limits.h>
#include <string.h>
#if defined(SECP256K1_BIG_ENDIAN)
#define BE32(x) (x)
#elif defined(SECP256K1_LITTLE_ENDIAN)
#define BE32(p) ((((p) & 0xFF) << 24) | (((p) & 0xFF00) << 8) | (((p) & 0xFF0000) >> 8) | (((p) & 0xFF000000) >> 24))
#endif
SECP256K1_INLINE static void secp256k1_borromean_hash(unsigned char *hash, const unsigned char *m, size_t mlen, const unsigned char *e, size_t elen,
size_t ridx, size_t eidx) {
uint32_t ring;
uint32_t epos;
unsigned char ring[4];
unsigned char epos[4];
secp256k1_sha256 sha256_en;
secp256k1_sha256_initialize(&sha256_en);
ring = BE32((uint32_t)ridx);
epos = BE32((uint32_t)eidx);
secp256k1_write_be32(ring, (uint32_t)ridx);
secp256k1_write_be32(epos, (uint32_t)eidx);
secp256k1_sha256_write(&sha256_en, e, elen);
secp256k1_sha256_write(&sha256_en, m, mlen);
secp256k1_sha256_write(&sha256_en, (unsigned char*)&ring, 4);
secp256k1_sha256_write(&sha256_en, (unsigned char*)&epos, 4);
secp256k1_sha256_write(&sha256_en, ring, 4);
secp256k1_sha256_write(&sha256_en, epos, 4);
secp256k1_sha256_finalize(&sha256_en, hash);
}