7 #ifndef SECP256K1_ECMULT_GEN_IMPL_H
8 #define SECP256K1_ECMULT_GEN_IMPL_H
55 memset(&adds, 0,
sizeof(adds));
60 for (i = 0; i < n; i++) {
62 for (j = 0; j <
g; j++) {
88 unsigned char nonce32[32];
90 unsigned char keydata[64];
105 memcpy(keydata + 32, seed32, 32);
107 memset(keydata, 0,
sizeof(keydata));
120 memset(nonce32, 0, 32);
#define ECMULT_GEN_PREC_G(bits)
#define ECMULT_GEN_PREC_BITS
#define ECMULT_GEN_PREC_N(bits)
static void secp256k1_ecmult_gen_context_clear(secp256k1_ecmult_gen_context *ctx)
static void secp256k1_ecmult_gen_context_build(secp256k1_ecmult_gen_context *ctx)
static void secp256k1_ecmult_gen(const secp256k1_ecmult_gen_context *ctx, secp256k1_gej *r, const secp256k1_scalar *gn)
static void secp256k1_ecmult_gen_blind(secp256k1_ecmult_gen_context *ctx, const unsigned char *seed32)
static int secp256k1_ecmult_gen_context_is_built(const secp256k1_ecmult_gen_context *ctx)
#define secp256k1_fe_cmov
static const secp256k1_fe secp256k1_fe_one
#define secp256k1_fe_clear
#define secp256k1_fe_set_b32_mod
#define secp256k1_fe_normalizes_to_zero
static void secp256k1_gej_clear(secp256k1_gej *r)
Clear a secp256k1_gej to prevent leaking sensitive information.
static void secp256k1_ge_clear(secp256k1_ge *r)
Clear a secp256k1_ge to prevent leaking sensitive information.
static void secp256k1_gej_add_ge(secp256k1_gej *r, const secp256k1_gej *a, const secp256k1_ge *b)
Set r equal to the sum of a and b (with b given in affine coordinates, and not infinity).
static void secp256k1_ge_from_storage(secp256k1_ge *r, const secp256k1_ge_storage *a)
Convert a group element back from the storage type.
static void secp256k1_gej_rescale(secp256k1_gej *r, const secp256k1_fe *b)
Rescale a jacobian point by b which must be non-zero.
static void secp256k1_ge_storage_cmov(secp256k1_ge_storage *r, const secp256k1_ge_storage *a, int flag)
If flag is true, set *r equal to *a; otherwise leave it.
static void secp256k1_gej_set_ge(secp256k1_gej *r, const secp256k1_ge *a)
Set a group element (jacobian) equal to another which is given in affine coordinates.
static void secp256k1_gej_neg(secp256k1_gej *r, const secp256k1_gej *a)
Set r equal to the inverse of a (i.e., mirrored around the X axis)
static const secp256k1_ge secp256k1_ge_const_g
const secp256k1_ge_storage secp256k1_ecmult_gen_prec_table[ECMULT_GEN_PREC_N(ECMULT_GEN_PREC_BITS)][ECMULT_GEN_PREC_G(ECMULT_GEN_PREC_BITS)]
static void secp256k1_scalar_cmov(secp256k1_scalar *r, const secp256k1_scalar *a, int flag)
If flag is true, set *r equal to *a; otherwise leave it.
static void secp256k1_scalar_set_b32(secp256k1_scalar *r, const unsigned char *bin, int *overflow)
Set a scalar from a big endian byte array.
static int secp256k1_scalar_is_zero(const secp256k1_scalar *a)
Check whether a scalar equals zero.
static void secp256k1_scalar_set_int(secp256k1_scalar *r, unsigned int v)
Set a scalar to an unsigned integer.
static void secp256k1_scalar_get_b32(unsigned char *bin, const secp256k1_scalar *a)
Convert a scalar to a byte array.
static unsigned int secp256k1_scalar_get_bits(const secp256k1_scalar *a, unsigned int offset, unsigned int count)
Access bits from a scalar.
static int secp256k1_scalar_add(secp256k1_scalar *r, const secp256k1_scalar *a, const secp256k1_scalar *b)
Add two scalars together (modulo the group order).
static void secp256k1_scalar_negate(secp256k1_scalar *r, const secp256k1_scalar *a)
Compute the complement of a scalar (modulo the group order).
static void secp256k1_scalar_clear(secp256k1_scalar *r)
Clear a scalar to prevent the leak of sensitive data.
static const secp256k1_scalar secp256k1_scalar_one
static void secp256k1_rfc6979_hmac_sha256_generate(secp256k1_rfc6979_hmac_sha256 *rng, unsigned char *out, size_t outlen)
static void secp256k1_rfc6979_hmac_sha256_initialize(secp256k1_rfc6979_hmac_sha256 *rng, const unsigned char *key, size_t keylen)
static void secp256k1_rfc6979_hmac_sha256_finalize(secp256k1_rfc6979_hmac_sha256 *rng)
#define VERIFY_CHECK(cond)
This field implementation represents the value as 10 uint32_t limbs in base 2^26.
A group element in affine coordinates on the secp256k1 curve, or occasionally on an isomorphic curve ...
A group element of the secp256k1 curve, in jacobian coordinates.
A scalar modulo the group order of the secp256k1 curve.