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trezor-firmware/crypto/ed25519-donna/curve25519-donna-helpers.h

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2016-04-22 15:47:48 +00:00
/*
Public domain by Andrew M. <liquidsun@gmail.com>
See: https://github.com/floodyberry/curve25519-donna
Curve25519 implementation agnostic helpers
*/
/*
* In: b = 2^5 - 2^0
* Out: b = 2^250 - 2^0
*/
void curve25519_pow_two5mtwo0_two250mtwo0(bignum25519 b);
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/*
* z^(p - 2) = z(2^255 - 21)
*/
void curve25519_recip(bignum25519 out, const bignum25519 z);
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/*
* z^((p-5)/8) = z^(2^252 - 3)
*/
void curve25519_pow_two252m3(bignum25519 two252m3, const bignum25519 z);