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llcrypto: Add `Panics`, `Availability` docs for convert_ed25519_to_curve25519_private.

This commit is contained in:
Gabriela Moldovan 2023-06-26 15:47:25 +01:00
parent 7c44984f3d
commit 94f405704f
1 changed files with 12 additions and 0 deletions
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12
crates/tor-llcrypto/src/pk/keymanip.rs
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@ -126,6 +126,18 @@ pub fn convert_curve25519_to_ed25519_private(
/// yield an [`ExpandedKeypair`](pk::ed25519::ExpandedKeypair) that is _not_ identical to the
/// expanded version of the original [`Keypair`](pk::ed25519::Keypair): the lower halves (the keys) of
/// the expanded key pairs will be the same, but their upper halves (the nonces) will be different.
///
/// # Panics
///
/// If the `debug_assertions` feature is enabled, this function will double-check that the key it
/// is about to return is clamped.
///
/// This panic should be impossible unless we have upgraded x25519-dalek without auditing this
/// function.
///
/// # Availability
///
/// This function is only available when the `keymgr` feature is enabled.
#[cfg(any(test, feature = "keymgr"))]
pub fn convert_ed25519_to_curve25519_private(
keypair: &pk::ed25519::Keypair,