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keygen.go
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keygen.go
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/*
Copyright IBM Corp. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package sw
import (
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
"crypto/rsa"
"fmt"
"github.com/hyperledger/fabric-lib-go/bccsp"
)
type ecdsaKeyGenerator struct {
curve elliptic.Curve
}
func (kg *ecdsaKeyGenerator) KeyGen(opts bccsp.KeyGenOpts) (bccsp.Key, error) {
privKey, err := ecdsa.GenerateKey(kg.curve, rand.Reader)
if err != nil {
return nil, fmt.Errorf("Failed generating ECDSA key for [%v]: [%s]", kg.curve, err)
}
return &ecdsaPrivateKey{privKey}, nil
}
type aesKeyGenerator struct {
length int
}
func (kg *aesKeyGenerator) KeyGen(opts bccsp.KeyGenOpts) (bccsp.Key, error) {
lowLevelKey, err := GetRandomBytes(kg.length)
if err != nil {
return nil, fmt.Errorf("Failed generating AES %d key [%s]", kg.length, err)
}
return &aesPrivateKey{lowLevelKey, false}, nil
}
type rsaKeyGenerator struct {
length int
}
func (kg *rsaKeyGenerator) KeyGen(opts bccsp.KeyGenOpts) (bccsp.Key, error) {
lowLevelKey, err := rsa.GenerateKey(rand.Reader, int(kg.length))
if err != nil {
return nil, fmt.Errorf("Failed generating RSA %d key [%s]", kg.length, err)
}
return &rsaPrivateKey{lowLevelKey}, nil
}