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Clear up doc comments on SpendingKey

This commit is contained in:
Deirdre Connolly 2020-03-28 02:01:10 -04:00 committed by Deirdre Connolly
parent 760edf9271
commit 2a7838d8e5
1 changed files with 5 additions and 4 deletions
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9
zebra-chain/src/keys/sprout.rs
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@ -26,8 +26,8 @@ use sha2;
pub struct SpendingKey(pub [u8; 32]);
impl SpendingKey {
/// Generate a new _SpendingKey_ with the highest 4 bits set to
/// zero (ie, 256 random bits, clamped to 252).
/// Generate a new _SpendingKey_ with the high 4 bits of the first
/// byte set to zero (ie, 256 random bits, clamped to 252).
pub fn new<T>(csprng: &mut T) -> Self
where
T: RngCore + CryptoRng,
@ -40,8 +40,9 @@ impl SpendingKey {
}
impl From<[u8; 32]> for SpendingKey {
/// Generate a _SpendingKey_ from existing bytes, with the highest
/// 4 bits set to zero (ie, 256 bits clamped to 252).
/// Generate a _SpendingKey_ from existing bytes, with the high 4
/// bits of the first byte set to zero (ie, 256 bits clamped to
/// 252).
fn from(mut bytes: [u8; 32]) -> SpendingKey {
bytes[0] &= 0b0000_1111; // Force the 4 high-order bits to zero.
SpendingKey(bytes)