Please run ./hack/update-codegen.sh.

Please run ./hack/update-codegen.sh.

Please run ./hack/update-codegen.sh.

Please run ./hack/update-codegen.sh.

Please run ./hack/update-codegen.sh.

Please run ./hack/update-codegen.sh.

Please run ./hack/update-codegen.sh. diff --git a/vendor/golang.org/x/crypto/curve25519/curve25519.go b/vendor/golang.org/x/crypto/curve25519/curve25519.go index bc62161..00f963e 100644 --- a/vendor/golang.org/x/crypto/curve25519/curve25519.go +++ b/vendor/golang.org/x/crypto/curve25519/curve25519.go @@ -5,71 +5,18 @@ // Package curve25519 provides an implementation of the X25519 function, which // performs scalar multiplication on the elliptic curve known as Curve25519. // See RFC 7748. +// +// Starting in Go 1.20, this package is a wrapper for the X25519 implementation +// in the crypto/ecdh package. package curve25519 // import "golang.org/x/crypto/curve25519" -import ( - "crypto/subtle" - "errors" - "strconv" - - "golang.org/x/crypto/curve25519/internal/field" -) - // ScalarMult sets dst to the product scalar * point. // // Deprecated: when provided a low-order point, ScalarMult will set dst to all // zeroes, irrespective of the scalar. Instead, use the X25519 function, which // will return an error. func ScalarMult(dst, scalar, point *[32]byte) { - var e [32]byte - - copy(e[:], scalar[:]) - e[0] &= 248 - e[31] &= 127 - e[31] |= 64 - - var x1, x2, z2, x3, z3, tmp0, tmp1 field.Element - x1.SetBytes(point[:]) - x2.One() - x3.Set(&x1) - z3.One() - - swap := 0 - for pos := 254; pos >= 0; pos-- { - b := e[pos/8] >> uint(pos&7) - b &= 1 - swap ^= int(b) - x2.Swap(&x3, swap) - z2.Swap(&z3, swap) - swap = int(b) - - tmp0.Subtract(&x3, &z3) - tmp1.Subtract(&x2, &z2) - x2.Add(&x2, &z2) - z2.Add(&x3, &z3) - z3.Multiply(&tmp0, &x2) - z2.Multiply(&z2, &tmp1) - tmp0.Square(&tmp1) - tmp1.Square(&x2) - x3.Add(&z3, &z2) - z2.Subtract(&z3, &z2) - x2.Multiply(&tmp1, &tmp0) - tmp1.Subtract(&tmp1, &tmp0) - z2.Square(&z2) - - z3.Mult32(&tmp1, 121666) - x3.Square(&x3) - tmp0.Add(&tmp0, &z3) - z3.Multiply(&x1, &z2) - z2.Multiply(&tmp1, &tmp0) - } - - x2.Swap(&x3, swap) - z2.Swap(&z3, swap) - - z2.Invert(&z2) - x2.Multiply(&x2, &z2) - copy(dst[:], x2.Bytes()) + scalarMult(dst, scalar, point) } // ScalarBaseMult sets dst to the product scalar * base where base is the @@ -78,7 +25,7 @@ func ScalarMult(dst, scalar, point *[32]byte) { // It is recommended to use the X25519 function with Basepoint instead, as // copying into fixed size arrays can lead to unexpected bugs. func ScalarBaseMult(dst, scalar *[32]byte) { - ScalarMult(dst, scalar, &basePoint) + scalarBaseMult(dst, scalar) } const ( @@ -91,21 +38,10 @@ const ( // Basepoint is the canonical Curve25519 generator. var Basepoint []byte -var basePoint = [32]byte{9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} +var basePoint = [32]byte{9} func init() { Basepoint = basePoint[:] } -func checkBasepoint() { - if subtle.ConstantTimeCompare(Basepoint, []byte{ - 0x09, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - }) != 1 { - panic("curve25519: global Basepoint value was modified") - } -} - // X25519 returns the result of the scalar multiplication (scalar * point), // according to RFC 7748, Section 5. scalar, point and the return value are // slices of 32 bytes. @@ -121,26 +57,3 @@ func X25519(scalar, point []byte) ([]byte, error) { var dst [32]byte return x25519(&dst, scalar, point) } - -func x25519(dst *[32]byte, scalar, point []byte) ([]byte, error) { - var in [32]byte - if l := len(scalar); l != 32 { - return nil, errors.New("bad scalar length: " + strconv.Itoa(l) + ", expected 32") - } - if l := len(point); l != 32 { - return nil, errors.New("bad point length: " + strconv.Itoa(l) + ", expected 32") - } - copy(in[:], scalar) - if &point[0] == &Basepoint[0] { - checkBasepoint() - ScalarBaseMult(dst, &in) - } else { - var base, zero [32]byte - copy(base[:], point) - ScalarMult(dst, &in, &base) - if subtle.ConstantTimeCompare(dst[:], zero[:]) == 1 { - return nil, errors.New("bad input point: low order point") - } - } - return dst

Please run ./hack/update-codegen.sh.

Please run ./hack/update-codegen.sh.

Please run ./hack/update-codegen.sh.