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rsa.go
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/
rsa.go
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package p2p
import (
"crypto/rand"
"crypto/rsa"
"crypto/sha512"
)
type RSA struct {
key *rsa.PrivateKey
}
func NewRSA() (r *RSA, err error) {
r = &RSA{}
r.key, err = rsa.GenerateKey(rand.Reader, 2048)
return
}
func (r *RSA) PublicKey() (pk PublicKey) {
pk = PublicKey{
Key: r.key.PublicKey,
}
return
}
func (r *RSA) PrivateKey() (pk PrivateKey) {
pk = PrivateKey{
key: *r.key,
}
return
}
type PublicKey struct {
Key rsa.PublicKey
}
func (pk PublicKey) Encode(ck CipherKey) (cck CryptCipherKey, err error) {
cck, err = rsa.EncryptOAEP(sha512.New(), rand.Reader, &pk.Key, ck, nil)
return
}
type PrivateKey struct {
key rsa.PrivateKey
}
func (pk PrivateKey) Decode(cck CryptCipherKey) (ck CipherKey, err error) {
ck, err = rsa.DecryptOAEP(sha512.New(), rand.Reader, &pk.key, cck, nil)
return
}