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Add rand_core::RngCore implementation to chacha20 - #63

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tarcieri merged 1 commit into
RustCrypto:masterfrom
dhardy:master
Oct 23, 2019
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Add rand_core::RngCore implementation to chacha20#63
tarcieri merged 1 commit into
RustCrypto:masterfrom
dhardy:master

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@dhardy

@dhardydhardy commented Oct 20, 2019

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This is a quick-and-dirty implementation for testing (could do with seek implementation and better doc at least).

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@tarcieri

tarcieri commented Oct 21, 2019

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I think I'd like to cut another release of chacha20 with the SSE impl then merge this

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tarcieri merged commit 46afd2b into RustCrypto:masterOct 23, 2019
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tarcieri commented Oct 23, 2019

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@dhardy thanks!

tarcieri added a commit that referenced this pull request Mar 16, 2021
@tarcieri
chacha20: remove Clone impls on RNGs
d39a020
Removes `derive(Clone)` on `ChaCha*Rng*`.
They date back to the original PR which added RNG support (#63).
Allowing `Clone` on an RNG is problematic because the cloned RNG will
have the same internal state, duplicating outputs which can be
catastrophic in a cryptographic context.
Instead, the `SeedableRng::from_rng` method can be used to "fork" one
RNG from another, seeing a new RNG with an output from another:
https://docs.rs/rand_core/0.6.2/rand_core/trait.SeedableRng.html#method.from_rng
@tarcieritarcieri mentioned this pull request Mar 16, 2021
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tarcieri added a commit that referenced this pull request Mar 16, 2021
@tarcieri
chacha20: removeCloneimpls on RNGs (#220)
ba7d695
Removes `derive(Clone)` on `ChaCha*Rng*`.
They date back to the original PR which added RNG support (#63).
Allowing `Clone` on an RNG is problematic because the cloned RNG will
have the same internal state, duplicating outputs which can be
catastrophic in a cryptographic context.
Instead, the `SeedableRng::from_rng` method can be used to "fork" one
RNG from another, seeing a new RNG with an output from another:
https://docs.rs/rand_core/0.6.2/rand_core/trait.SeedableRng.html#method.from_rng
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@dhardy@tarcieri