// GoGOST -- Pure Go GOST cryptographic functions library
-// Copyright (C) 2015-2023 Sergey Matveev <stargrave@stargrave.org>
+// Copyright (C) 2015-2024 Sergey Matveev <stargrave@stargrave.org>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
), nil
}
-// Sign the digest. opts argument is unused.
-func (prv *PrivateKey) Sign(rand io.Reader, digest []byte, opts crypto.SignerOpts) ([]byte, error) {
+// Sign the digest. opts argument is unused. That is identical to SignDigest,
+// but kept to be friendly to crypto.Signer.
+func (prv *PrivateKey) Sign(
+ rand io.Reader, digest []byte, opts crypto.SignerOpts,
+) ([]byte, error) {
return prv.SignDigest(digest, rand)
}
return prv.Prv.Public()
}
-func (prv *PrivateKeyReverseDigest) Sign(rand io.Reader, digest []byte, opts crypto.SignerOpts) ([]byte, error) {
- d := make([]byte, len(digest))
- copy(d, digest)
- reverse(d)
- return prv.Prv.Sign(rand, d, opts)
+func (prv *PrivateKeyReverseDigest) Sign(
+ rand io.Reader, digest []byte, opts crypto.SignerOpts,
+) ([]byte, error) {
+ dgst := make([]byte, len(digest))
+ for i := 0; i < len(digest); i++ {
+ dgst[i] = digest[len(digest)-i-1]
+ }
+ return prv.Prv.Sign(rand, dgst, opts)
}
type PrivateKeyReverseDigestAndSignature struct {
return prv.Prv.Public()
}
-func (prv *PrivateKeyReverseDigestAndSignature) Sign(rand io.Reader, digest []byte, opts crypto.SignerOpts) ([]byte, error) {
- d := make([]byte, len(digest))
- copy(d, digest)
- reverse(d)
- sign, err := prv.Prv.Sign(rand, d, opts)
+func (prv *PrivateKeyReverseDigestAndSignature) Sign(
+ rand io.Reader, digest []byte, opts crypto.SignerOpts,
+) ([]byte, error) {
+ dgst := make([]byte, len(digest))
+ for i := 0; i < len(digest); i++ {
+ dgst[i] = digest[len(digest)-i-1]
+ }
+ sign, err := prv.Prv.Sign(rand, dgst, opts)
if err != nil {
return sign, err
}