mirror of
https://github.com/planetmint/planetmint-go.git
synced 2025-11-24 06:25:47 +00:00
57 lines
1.4 KiB
Go
57 lines
1.4 KiB
Go
package keeper
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import (
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"context"
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"crypto/sha256"
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"encoding/hex"
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"errors"
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"planetmint-go/x/asset/types"
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"github.com/cosmos/cosmos-sdk/crypto/keys/secp256k1"
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sdk "github.com/cosmos/cosmos-sdk/types"
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)
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func (k msgServer) NotarizeAsset(goCtx context.Context, msg *types.MsgNotarizeAsset) (*types.MsgNotarizeAssetResponse, error) {
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ctx := sdk.UnwrapSDKContext(goCtx)
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machine, found := k.machineKeeper.GetMachine(ctx, msg.Creator)
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if !found {
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return &types.MsgNotarizeAssetResponse{}, errors.New("machine not found")
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}
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valid := ValidateSignature(msg.CidHash, msg.Sign, msg.Creator)
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if !valid {
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return &types.MsgNotarizeAssetResponse{}, errors.New("invalid signature")
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}
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var asset = types.Asset{
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Hash: msg.CidHash,
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Signature: msg.Sign,
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Pubkey: machine.IssuerPlanetmint,
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}
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k.StoreAsset(ctx, asset)
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return &types.MsgNotarizeAssetResponse{}, nil
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}
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func ValidateSignature(message string, signature string, publicKey string) bool {
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// Convert the message, signature, and public key from hex to bytes
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messageBytes, _ := hex.DecodeString(message)
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signatureBytes, _ := hex.DecodeString(signature)
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publicKeyBytes, _ := hex.DecodeString(publicKey)
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// Hash the message
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hash := sha256.Sum256(messageBytes)
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// Create a secp256k1 public key object
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pubKey := &secp256k1.PubKey{Key: publicKeyBytes}
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// Verify the signature
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isValid := pubKey.VerifySignature(hash[:], signatureBytes)
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return isValid
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}
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