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dsa: impl ZeroizeOnDrop for SigningKey #917

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@pqcfox pqcfox commented Mar 2, 2025

Resolves #883 by implementing ZeroizeOnDrop for dsa::SigningKey.

Since the private component x already is of type Zeroizing<BigUint>, no changes were necessary to ensure the ZeroizeOnDrop preconditions were met.

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tarcieri commented Mar 2, 2025

We're trying to migrate the crate to crypto-bigint right now, so this is probably best landed after #906

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dsa: missing Zeroize/ZeroizeOnDrop for SigningKey
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