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[#150] signature: Add scheme

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Allow `SignOption` to set 2 parameters:
1. Default signature scheme, which is used in case scheme is
   unspecified.
2. Restrict scheme option which also checks that scheme is either
   unspecified or equal to the restricted scheme. This is only used
   for verification and is necessary because some of the signatures
   are used in smart-contracts.

Also provide signature struct to sign/verify functions in helpers.

The constant names differ a bit from those in API because of linter
complaints.

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
This commit is contained in:
Evgenii Stratonikov 2022-02-24 14:05:05 +03:00 • committed by LeL
parent 4fba1af6aa
commit 1c7dd03cf5
8 changed files with 129 additions and 131 deletions
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11
object/fmt.go
View file

@ -94,9 +94,8 @@ func CalculateIDSignature(key *ecdsa.PrivateKey, id *oid.ID) (*signature.Signatu
signatureV2.StableMarshalerWrapper{
SM: id.ToV2(),
},
func(key, sign []byte) {
sig.SetKey(key)
sig.SetSign(sign)
func(s *signature.Signature) {
*sig = *s
},
); err != nil {
return nil, err
@ -121,11 +120,7 @@ func VerifyIDSignature(obj *Object) error {
signatureV2.StableMarshalerWrapper{
SM: obj.ID().ToV2(),
},
func() ([]byte, []byte) {
sig := obj.Signature()
return sig.Key(), sig.Sign()
},
obj.Signature,
)
}