69 lines
1.7 KiB
Go
69 lines
1.7 KiB
Go
package pki
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import (
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"crypto"
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"crypto/rand"
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"crypto/rsa"
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"crypto/x509"
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"encoding/pem"
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"errors"
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)
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const (
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PemLabelRsa = "RSA PRIVATE KEY"
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)
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type (
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RsaPrivateKey struct {
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private_key *rsa.PrivateKey
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}
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RsaPublicKey struct {
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public_key *rsa.PublicKey
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}
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)
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// generate a new rsa private key
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func NewPrivateKeyRsa(size int) (*RsaPrivateKey, error) {
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key, err := rsa.GenerateKey(rand.Reader, size)
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if err != nil { return nil, err }
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return &RsaPrivateKey{key}, nil
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}
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// load a rsa private key its ASN.1 presentation
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func LoadPrivateKeyRsa(raw []byte) (*RsaPrivateKey, error) {
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key, err := x509.ParsePKCS1PrivateKey(raw)
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if err != nil { return nil, err }
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return &RsaPrivateKey{key}, nil
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}
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func (pr *RsaPrivateKey) Public() PublicKey {
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return &RsaPublicKey{pr.private_key.Public().(*rsa.PublicKey)}
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}
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func (pr RsaPrivateKey) Sign(message []byte, hash crypto.Hash) ([]byte, error) {
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return make([]byte, 0), errors.New("not implemented yet!")
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}
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// get the private key
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func (pr RsaPrivateKey) privateKey() crypto.PrivateKey {
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return pr.private_key
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}
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func (pr RsaPrivateKey) MarshalPem() (marshalledPemBlock, error) {
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asn1 := x509.MarshalPKCS1PrivateKey(pr.private_key)
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pem_block := pem.Block{Type: PemLabelRsa, Bytes: asn1}
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return pem.EncodeToMemory(&pem_block), nil
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}
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func (pu *RsaPublicKey) MarshalPem() (marshalledPemBlock, error) {
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asn1, err := x509.MarshalPKIXPublicKey(pu.public_key)
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if err != nil { return nil, err }
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pem_block := pem.Block{Type: PemLabelPublic, Bytes: asn1}
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return pem.EncodeToMemory(&pem_block), nil
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}
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func (pu *RsaPublicKey) Verify(message []byte, signature []byte, hash crypto.Hash) (bool, error) {
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return false, errors.New("not implemented yet!")
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}
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