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\#242 Expand usage of black_box/zeroize

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This commit greatly expands the usage of black_box/zeroize on bits, as it
originally should have. It is likely overkill, leading to less efficient
code generation, yet does its best to be comprehensive where comprehensiveness
is extremely annoying to achieve.

In the future, this usage of black_box may be desirable to move to its own
crate.

Credit to @AaronFeickert for identifying the original commit was incomplete.
This commit is contained in:
Luke Parker
2023-03-10 06:27:44 -05:00
parent 62dfc63532
commit ad470bc969
10 changed files with 163 additions and 47 deletions
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8
crypto/dleq/Cargo.toml
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@@ -39,8 +39,14 @@ transcript = { package = "flexible-transcript", path = "../transcript", features
[features]
std = []
serialize = ["std"]
experimental = ["std", "thiserror", "multiexp"]
# Needed for cross-group DLEqs
black_box = []
secure_capacity_difference = []
experimental = ["std", "thiserror", "multiexp"]
# Only applies to experimental, yet is default to ensure security
# experimental doesn't mandate it itself in case two curves with extreme
# capacity differences are desired to be used together, in which case the user
# must specify experimental without default features
default = ["secure_capacity_difference"]