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30 lines
766 B
Go
30 lines
766 B
Go
package keeper
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import (
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"crypto/sha256"
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"fmt"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"gopkg.in/macaroon.v2"
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)
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// IssueMacaroon creates a macaroon with the specified parameters.
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func (k Keeper) IssueMacaroon(ctx sdk.Context, sharedMPCPubKey, location, id string, blockExpiry uint64) (*macaroon.Macaroon, error) {
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// Derive the root key by hashing the shared MPC public key
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rootKey := sha256.Sum256([]byte(sharedMPCPubKey))
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// Create the macaroon
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m, err := macaroon.New(rootKey[:], []byte(id), location, macaroon.LatestVersion)
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if err != nil {
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return nil, err
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}
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// Add the block expiry caveat
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caveat := fmt.Sprintf("block-expiry=%d", blockExpiry)
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err = m.AddFirstPartyCaveat([]byte(caveat))
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if err != nil {
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return nil, err
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}
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return m, nil
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}
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