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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,40 @@ | ||
| package substrate | ||
|
|
||
| import ( | ||
| "github.com/centrifuge/go-substrate-rpc-client/signature" | ||
| "github.com/centrifuge/go-substrate-rpc-client/types" | ||
| "github.com/mailchain/mailchain/crypto" | ||
| "github.com/mailchain/mailchain/encoding" | ||
| "github.com/mailchain/mailchain/internal/mailbox/signer" | ||
| "github.com/pkg/errors" | ||
| ) | ||
|
|
||
| type SignerOptions struct { | ||
| Tx types.Extrinsic | ||
| SignatureOptions types.SignatureOptions | ||
| } | ||
|
|
||
| func NewSigner(privateKey crypto.PrivateKey) (*Signer, error) { | ||
| return &Signer{privateKey: privateKey}, nil | ||
| } | ||
|
|
||
| type Signer struct { | ||
| privateKey crypto.PrivateKey | ||
| } | ||
|
|
||
| func (e Signer) Sign(opts signer.Options) (signedTransaction interface{}, err error) { | ||
| switch opts := opts.(type) { | ||
| case SignerOptions: | ||
| pair, err := signature.KeyringPairFromSecret(encoding.EncodeHex(e.privateKey.Bytes())) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| err = opts.Tx.Sign(pair, opts.SignatureOptions) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return &opts.Tx, nil | ||
| default: | ||
| return nil, errors.New("invalid options for substrate signing") | ||
| } | ||
| } |
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