60 lines
1.4 KiB
Go
60 lines
1.4 KiB
Go
package common
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import (
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"github.com/bounce-chat/go-i2p/lib/common/base32"
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"github.com/bounce-chat/go-i2p/lib/common/base64"
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"github.com/bounce-chat/go-i2p/lib/crypto"
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"strings"
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)
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// a network endpoint inside i2p
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// effectively a public key blob
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type Destination []byte
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// obtain public elgamal key
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func (dest Destination) PublicKey() (k crypto.PublicEncryptionKey) {
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cert := dest.Certificate()
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if cert.Type() == CERT_KEY {
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// TODO(psi): check for key cert and included encryption key
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} else {
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var ek crypto.ElgPublicKey
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copy(ek[:], dest[:256])
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k = ek
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}
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return
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}
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// obtain destination certificate
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func (dest Destination) Certificate() Certificate {
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return Certificate(dest[128+256:])
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}
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// gets this destination's signing key
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// if there is a keycert in this destination the signing key in there is used
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func (dest Destination) SigningPublicKey() (k crypto.SigningPublicKey) {
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cert := dest.Certificate()
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if cert.Type() == CERT_KEY {
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// we have a key certificate
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// extract the signing key from the key cert
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k = KeyCert(cert).SigningPublicKey()
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} else {
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var pk crypto.DSAPublicKey
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copy(pk[:], dest[256:256+128])
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k = pk
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}
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return
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}
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// return the .b32.i2p address
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func (dest Destination) Base32Address() (str string) {
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h := crypto.SHA256(dest)
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str = strings.Trim(base32.EncodeToString(h[:]), "=")
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str += ".b32.i2p"
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return
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}
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func (dest Destination) Base64() (str string) {
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str = base64.EncodeToString(dest)
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return
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}
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