53 lines
1.3 KiB
Go
53 lines
1.3 KiB
Go
/*
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Copyright IBM Corp. All Rights Reserved.
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SPDX-License-Identifier: Apache-2.0
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*/
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package sw
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import (
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"crypto/rsa"
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"crypto/sha256"
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"crypto/x509"
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"errors"
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"fmt"
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"github.com/hyperledger/fabric/bccsp"
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)
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// An rsaPublicKey wraps the standard library implementation of an RSA public
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// key with functions that satisfy the bccsp.Key interface.
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//
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// NOTE: Fabric does not support RSA signing or verification. This code simply
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// allows MSPs to include RSA CAs in their certificate chains.
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type rsaPublicKey struct{ pubKey *rsa.PublicKey }
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func (k *rsaPublicKey) Symmetric() bool { return false }
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func (k *rsaPublicKey) Private() bool { return false }
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func (k *rsaPublicKey) PublicKey() (bccsp.Key, error) { return k, nil }
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// Bytes converts this key to its serialized representation.
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func (k *rsaPublicKey) Bytes() (raw []byte, err error) {
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if k.pubKey == nil {
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return nil, errors.New("Failed marshalling key. Key is nil.")
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}
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raw, err = x509.MarshalPKIXPublicKey(k.pubKey)
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if err != nil {
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return nil, fmt.Errorf("Failed marshalling key [%s]", err)
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}
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return
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}
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// SKI returns the subject key identifier of this key.
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func (k *rsaPublicKey) SKI() []byte {
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if k.pubKey == nil {
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return nil
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}
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// Marshal the public key and hash it
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raw := x509.MarshalPKCS1PublicKey(k.pubKey)
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hash := sha256.Sum256(raw)
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return hash[:]
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}
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