forked from TrueCloudLab/frostfs-node
54 lines
1.2 KiB
Go
54 lines
1.2 KiB
Go
package private
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import (
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"bytes"
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"crypto/ecdsa"
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"errors"
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"github.com/nspcc-dev/neofs-api-go/util/signature"
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"github.com/nspcc-dev/neofs-node/pkg/services/private"
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)
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// SignedMessage is an interface of Private service message.
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type SignedMessage interface {
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signature.DataSource
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GetSignature() *private.Signature
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SetSignature(*private.Signature)
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}
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var errDisallowedKey = errors.New("key is not in the allowed list")
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func (s *Server) isValidRequest(req SignedMessage) error {
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var (
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sign = req.GetSignature()
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key = sign.GetKey()
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allowed = false
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)
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// check if key is allowed
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for i := range s.allowedKeys {
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if allowed = bytes.Equal(s.allowedKeys[i], key); allowed {
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break
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}
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}
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if !allowed {
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return errDisallowedKey
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}
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// verify signature
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return signature.VerifyDataWithSource(req, func() ([]byte, []byte) {
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return key, sign.GetSign()
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})
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}
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// SignMessage signs Private service message with private key.
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func SignMessage(key *ecdsa.PrivateKey, msg SignedMessage) error {
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return signature.SignDataWithHandler(key, msg, func(key []byte, sig []byte) {
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s := new(private.Signature)
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s.SetKey(key)
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s.SetSign(sig)
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msg.SetSignature(s)
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})
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}
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