7 #ifndef SECP256K1_ECMULT_GEN_H
8 #define SECP256K1_ECMULT_GEN_H
36 #if defined(EXHAUSTIVE_TEST_ORDER)
42 # if EXHAUSTIVE_TEST_ORDER == 7
44 # define COMB_BLOCKS 1
46 # elif EXHAUSTIVE_TEST_ORDER == 13
48 # define COMB_BLOCKS 1
50 # elif EXHAUSTIVE_TEST_ORDER == 199
52 # define COMB_BLOCKS 2
55 # error "Unknown exhaustive test order"
57 # if (COMB_RANGE >= 32) || ((EXHAUSTIVE_TEST_ORDER >> (COMB_RANGE - 1)) != 1)
58 # error "COMB_RANGE != ceil(log2(EXHAUSTIVE_TEST_ORDER+1))"
61 # define COMB_RANGE 256
66 # define COMB_BLOCKS 11
68 # pragma message DEBUG_CONFIG_MSG("COMB_BLOCKS undefined, assuming default value")
74 # pragma message DEBUG_CONFIG_MSG("COMB_TEETH undefined, assuming default value")
78 #define COMB_SPACING CEIL_DIV(COMB_RANGE, COMB_BLOCKS * COMB_TEETH)
84 #define COMB_BITS (COMB_BLOCKS * COMB_TEETH * COMB_SPACING)
86 #define COMB_POINTS (1 << (COMB_TEETH - 1))
89 #if !(1 <= COMB_BLOCKS && COMB_BLOCKS <= 256)
90 # error "COMB_BLOCKS must be in the range [1, 256]"
92 #if !(1 <= COMB_TEETH && COMB_TEETH <= 8)
93 # error "COMB_TEETH must be in the range [1, 8]"
95 #if COMB_BITS < COMB_RANGE
96 # error "COMB_BLOCKS * COMB_TEETH * COMB_SPACING is too low"
103 #if (COMB_BLOCKS - 1) * COMB_TEETH * COMB_SPACING >= 256
104 # error "COMB_BLOCKS can be reduced"
106 #if COMB_BLOCKS * (COMB_TEETH - 1) * COMB_SPACING >= 256
107 # error "COMB_TEETH can be reduced"
111 # pragma message DEBUG_CONFIG_DEF(COMB_RANGE)
112 # pragma message DEBUG_CONFIG_DEF(COMB_BLOCKS)
113 # pragma message DEBUG_CONFIG_DEF(COMB_TEETH)
114 # pragma message DEBUG_CONFIG_DEF(COMB_SPACING)
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 *a)
Multiply with the generator: R = a*G.
static void secp256k1_ecmult_gen_blind(secp256k1_ecmult_gen_context *ctx, const unsigned char *seed32)
secp256k1_scalar scalar_offset
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.