11 Commits

Author	SHA1	Message	Date
therealyingtong	9f27049c84	Add constants::load.rs ... This makes it easier to load constants into the ECC chip.	2021-06-05 13:18:24 +08:00
therealyingtong	fa9d8a992c	Update constants	2021-06-02 22:51:37 +08:00
therealyingtong	0636a6f2ec	Update window table formula. ... Previously, the window table M for fixed-base scalar multiplication computed M[w][k] = [(k+1)*(2^3)^w]B for each window w, where k is a 3-bit chunk in the scalar decomposition in the range [0..8). However, in the case k_0 = 7, k_1= 0, the window table entries would evaluate to: * M[0][k_0] = [(7+1)*(2^3)^0]B = [8]B, * M[1][k_1] = [(0+1)*(2^3)^1]B = [8]B, which means the first addition would require complete addition. To avoid this, we alter the formula to M[w][k] = [(k+2)*(2^3)^w]B. We make a corresponding change to the formula for the last window W. Previously, we had: M[W][k] = [k * (2^3)^W - \sum((2^3)^j)]B, for j in [0..W-1). Now, we have: M[W][k] = [k * (2^3)^W - \sum(2^(3j+1))]B, for j in [0..W-1).	2021-06-02 22:51:37 +08:00
therealyingtong	11d90692e1	Fix bugs in value_commit_v, value_commit_r generators ... Co-authored-by: Daira Hopwood <daira@jacaranda.org>	2021-05-04 02:04:56 +08:00
therealyingtong	de75c9538b	Update constants after hash_to_field fix (zcash/pasta_curves@a119467)	2021-04-28 20:53:14 +08:00
therealyingtong	13d7da3c45	Replace OrchardFixedBases enum with newtypes ... Co-authored-by: Kris Nuttycombe <kris@electriccoin.co>	2021-04-28 20:53:14 +08:00
therealyingtong	e26b6c6123	Test every row in test_lagrange_coeffs() instead of using random scalar	2021-04-28 20:53:14 +08:00
therealyingtong	17b66e1c6a	Remember u-values	2021-04-28 20:53:14 +08:00
therealyingtong	21060393fe	Remove redundant imports	2021-04-28 20:53:14 +08:00
therealyingtong	6cc957e998	Add constants for short signed scalar mul	2021-04-28 20:53:14 +08:00
therealyingtong	2c11f3a048	Add Orchard fixed bases and tests	2021-04-28 20:53:14 +08:00