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Avoid using out-of-bounds field elements (in impossible cases) #282

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Avoid using out-of-bounds field elements (in impossible cases) #282

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Commits on Jan 11, 2024

  1. Avoid using out-of-bounds field elements (in impossible cases) 

    secp256k1_fe_set_b32_limit says that when it returns 0, one is not allowed to use
the resulting output value.

This refactors the code so that the existing value of t is maintained in cases where
sha256 would output an out-of-bounds hash value.

Note: This situation is cryptographically impossible to occur.
    @roconnor-blockstream
    roconnor-blockstream committed Jan 11, 2024
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