Mukan Erkin Törük
88dd97a9f8
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44 lines
1.7 KiB
Go
44 lines
1.7 KiB
Go
package solomachine
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import (
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errorsmod "cosmossdk.io/errors"
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cryptotypes "git.cw.tr/mukan-network/mukan-sdk/crypto/types"
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"git.cw.tr/mukan-network/mukan-sdk/crypto/types/multisig"
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"git.cw.tr/mukan-network/mukan-sdk/types/tx/signing"
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)
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// VerifySignature verifies if the provided public key generated the signature
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// over the given data. Single and Multi signature public keys are supported.
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// The signature data type must correspond to the public key type. An error is
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// returned if signature verification fails or an invalid SignatureData type is
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// provided.
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func VerifySignature(pubKey cryptotypes.PubKey, signBytes []byte, sigData signing.SignatureData) error {
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switch pubKey := pubKey.(type) {
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case multisig.PubKey:
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data, ok := sigData.(*signing.MultiSignatureData)
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if !ok {
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return errorsmod.Wrapf(ErrSignatureVerificationFailed, "invalid signature data type, expected %T, got %T", (*signing.MultiSignatureData)(nil), data)
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}
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// The function supplied fulfills the VerifyMultisignature interface. No special
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// adjustments need to be made to the sign bytes based on the sign mode.
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if err := pubKey.VerifyMultisignature(func(signing.SignMode) ([]byte, error) {
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return signBytes, nil
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}, data); err != nil {
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return errorsmod.Wrapf(ErrSignatureVerificationFailed, "failed to verify multisignature: %s", err.Error())
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}
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default:
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data, ok := sigData.(*signing.SingleSignatureData)
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if !ok {
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return errorsmod.Wrapf(ErrSignatureVerificationFailed, "invalid signature data type, expected %T, got %T", (*signing.SingleSignatureData)(nil), data)
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}
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if !pubKey.VerifySignature(signBytes, data.Signature) {
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return ErrSignatureVerificationFailed
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}
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}
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return nil
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}
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