diff options
Diffstat (limited to 'vendor/filippo.io/edwards25519/scalar.go')
| -rw-r--r-- | vendor/filippo.io/edwards25519/scalar.go | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/vendor/filippo.io/edwards25519/scalar.go b/vendor/filippo.io/edwards25519/scalar.go index f3da71ce..3df2fb93 100644 --- a/vendor/filippo.io/edwards25519/scalar.go +++ b/vendor/filippo.io/edwards25519/scalar.go @@ -22,7 +22,7 @@ import ( // The zero value is a valid zero element. type Scalar struct { // s is the Scalar value in little-endian. The value is always reduced - // between operations. + // modulo l between operations. s [32]byte } @@ -79,9 +79,12 @@ func (s *Scalar) Set(x *Scalar) *Scalar { return s } -// SetUniformBytes sets s to an uniformly distributed value given 64 uniformly -// distributed random bytes. If x is not of the right length, SetUniformBytes -// returns nil and an error, and the receiver is unchanged. +// SetUniformBytes sets s = x mod l, where x is a 64-byte little-endian integer. +// If x is not of the right length, SetUniformBytes returns nil and an error, +// and the receiver is unchanged. +// +// SetUniformBytes can be used to set s to an uniformly distributed value given +// 64 uniformly distributed random bytes. func (s *Scalar) SetUniformBytes(x []byte) (*Scalar, error) { if len(x) != 64 { return nil, errors.New("edwards25519: invalid SetUniformBytes input length") |