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pki/rsa.go

55 lines
1.2 KiB
Go

package pkilib
import (
"crypto"
"crypto/rand"
"crypto/rsa"
"crypto/x509"
"errors"
)
type (
RsaPrivateKey struct {
private_key *rsa.PrivateKey
}
RsaPublicKey struct {
public_key rsa.PublicKey
}
)
// generate a new rsa private key
func NewPrivateKeyRsa(size int) (*RsaPrivateKey, error) {
key, err := rsa.GenerateKey(rand.Reader, size)
if err != nil { return nil, err }
return &RsaPrivateKey{key}, nil
}
// load a rsa private key its ASN.1 presentation
func LoadPrivateKeyRsa(raw []byte) (*RsaPrivateKey, error) {
key, err := x509.ParsePKCS1PrivateKey(raw)
if err != nil { return nil, err }
return &RsaPrivateKey{key}, nil
}
func (pr *RsaPrivateKey) Public() PublicKey {
return &RsaPublicKey{pr.private_key.Public().(rsa.PublicKey)}
}
func (pr RsaPrivateKey) Sign(message []byte) ([]byte, error) {
return make([]byte, 0), errors.New("not implemented yet!")
}
// get the private key
func (pr RsaPrivateKey) privateKey() crypto.PrivateKey {
return pr.private_key
}
func (pr RsaPrivateKey) MarshalPem() (marshalledPemBlock, error) {
return nil, errors.New("not implemented yet!")
}
func (pu *RsaPublicKey) Verify(message []byte, signature []byte) (bool, error) {
return false, errors.New("not implemented yet!")
}