mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-15 10:58:09 +00:00
105 lines
2.8 KiB
C
105 lines
2.8 KiB
C
/*
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Timing safe memory compare
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*/
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int ed25519_verify(const unsigned char *x, const unsigned char *y, size_t len);
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/*
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conversions
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*/
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void ge25519_p1p1_to_partial(ge25519 *r, const ge25519_p1p1 *p);
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void ge25519_p1p1_to_full(ge25519 *r, const ge25519_p1p1 *p);
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void ge25519_full_to_pniels(ge25519_pniels *p, const ge25519 *r);
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/*
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adding & doubling
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*/
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void ge25519_double_p1p1(ge25519_p1p1 *r, const ge25519 *p);
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#ifndef ED25519_NO_PRECOMP
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void ge25519_nielsadd2_p1p1(ge25519_p1p1 *r, const ge25519 *p, const ge25519_niels *q, unsigned char signbit);
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#endif
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/* computes [s1]p1 + [s2]p2 */
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#if USE_MONERO
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void ge25519_double_scalarmult_vartime2(ge25519 *r, const ge25519 *p1, const bignum256modm s1, const ge25519 *p2, const bignum256modm s2);
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#endif
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void ge25519_pnielsadd_p1p1(ge25519_p1p1 *r, const ge25519 *p, const ge25519_pniels *q, unsigned char signbit);
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void ge25519_double_partial(ge25519 *r, const ge25519 *p);
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void ge25519_double(ge25519 *r, const ge25519 *p);
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void ge25519_nielsadd2(ge25519 *r, const ge25519_niels *q);
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void ge25519_pnielsadd(ge25519_pniels *r, const ge25519 *p, const ge25519_pniels *q);
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/*
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pack & unpack
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*/
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void ge25519_pack(unsigned char r[32], const ge25519 *p);
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int ge25519_unpack_negative_vartime(ge25519 *r, const unsigned char p[32]);
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/*
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scalarmults
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*/
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void ge25519_set_neutral(ge25519 *r);
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/* computes [s1]p1 + [s2]base */
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void ge25519_double_scalarmult_vartime(ge25519 *r, const ge25519 *p1, const bignum256modm s1, const bignum256modm s2);
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/* computes [s1]p1, constant time */
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void ge25519_scalarmult(ge25519 *r, const ge25519 *p1, const bignum256modm s1);
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void ge25519_scalarmult_base_choose_niels(ge25519_niels *t, const uint8_t table[256][96], uint32_t pos, signed char b);
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/* computes [s]basepoint */
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void ge25519_scalarmult_base_niels(ge25519 *r, const uint8_t basepoint_table[256][96], const bignum256modm s);
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/* check if r is on curve */
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int ge25519_check(const ge25519 *r);
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/* a == b */
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int ge25519_eq(const ge25519 *a, const ge25519 *b);
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/* copies one point to another */
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void ge25519_copy(ge25519 *dst, const ge25519 *src);
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/* sets B point to r */
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void ge25519_set_base(ge25519 *r);
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/* 8*P */
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void ge25519_mul8(ge25519 *r, const ge25519 *t);
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/* -P */
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void ge25519_neg_partial(ge25519 *r);
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/* -P */
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void ge25519_neg_full(ge25519 *r);
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/* reduce all coords */
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void ge25519_reduce(ge25519 *r, const ge25519 *t);
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/* normalizes coords. (x, y, 1, x*y) */
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void ge25519_norm(ge25519 *r, const ge25519 * t);
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/* Simple addition */
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void ge25519_add(ge25519 *r, const ge25519 *a, const ge25519 *b, unsigned char signbit);
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/* point from bytes, used in H_p() */
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void ge25519_fromfe_frombytes_vartime(ge25519 *r, const unsigned char *s);
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/* point from bytes */
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int ge25519_unpack_vartime(ge25519 *r, const unsigned char *s);
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/* aG, wrapper for niels base mult. */
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void ge25519_scalarmult_base_wrapper(ge25519 *r, const bignum256modm s);
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