forked from SSLMate/go-pkcs12
/
hash.go
84 lines (73 loc) · 2.18 KB
/
hash.go
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package pkcs12
import (
"crypto"
"crypto/ecdsa"
"crypto/ed25519"
"crypto/rsa"
"crypto/sha256"
"crypto/x509"
"errors"
"fmt"
"golang.org/x/crypto/ssh"
)
func hashKey(key interface{}) (fingerprint []byte, err error) {
switch k := key.(type) {
case *ecdsa.PrivateKey:
fingerprint, err = hashPublicKey(k.Public())
case ecdsa.PrivateKey:
fingerprint, err = hashPublicKey(k.Public())
case *rsa.PrivateKey:
fingerprint, err = hashPublicKey(k.Public())
case rsa.PrivateKey:
fingerprint, err = hashPublicKey(k.Public())
case *ed25519.PrivateKey:
fingerprint, err = hashPublicKey(k.Public())
case ed25519.PrivateKey:
fingerprint, err = hashPublicKey(k.Public())
case *ecdsa.PublicKey:
fingerprint, err = hashPublicKey(k)
case ecdsa.PublicKey:
fingerprint, err = hashPublicKey(&k)
case *rsa.PublicKey:
fingerprint, err = hashPublicKey(k)
case rsa.PublicKey:
fingerprint, err = hashPublicKey(&k)
case *ed25519.PublicKey:
fingerprint, err = hashPublicKey(k)
case ed25519.PublicKey:
fingerprint, err = hashPublicKey(&k)
default:
return nil, fmt.Errorf("pkcs12: unable to hash key format: %T", key)
}
return
}
func hashPublicKey(pub interface{}) (fingerprint []byte, err error) {
pk, err := ssh.NewPublicKey(pub)
if err != nil {
return nil, fmt.Errorf("pkcs12: unknown key format: %T", pub)
}
hash_sha256 := sha256.New()
hash_sha256.Write(pk.Marshal())
fingerprint = hash_sha256.Sum(nil)
return
}
// Attempt to parse the given private key DER block. OpenSSL 0.9.8 generates
// PKCS #1 private keys by default, while OpenSSL 1.0.0 generates PKCS #8 keys.
// OpenSSL ecparam generates SEC1 EC private keys for ECDSA. We try all three.
func parsePrivateKey(der []byte) (crypto.PrivateKey, error) {
if key, err := x509.ParsePKCS1PrivateKey(der); err == nil {
return key, nil
}
if key, err := x509.ParsePKCS8PrivateKey(der); err == nil {
switch key := key.(type) {
case *rsa.PrivateKey, *ecdsa.PrivateKey, ed25519.PrivateKey:
return key, nil
default:
return nil, errors.New("pkcs12: found unknown private key type")
}
}
if key, err := x509.ParseECPrivateKey(der); err == nil {
return key, nil
}
return nil, errors.New("pkcs12: failed to parse private key")
}