我正在尝试使用以下代码从文件中读取 RSA 公钥:
keyBytes, err := ioutil.ReadFile("pubkey.pem")
if err != nil {
log.Fatal(err)
}
block, _ := pem.Decode(keyBytes)
fmt.Printf("block.Type: %s\n", block.Type)
pubkeyInterface, err := x509.ParsePKIXPublicKey(block.Bytes)
pubkey, ok := pubkeyInterface.(*rsa.PublicKey)
if !ok {
log.Fatal("Fatal error")
}
cipher, err := rsa.EncryptPKCS1v15(nil, pubkey, []byte(msg))
if err != nil {
log.Fatal(err)
}
但我收到以下错误:
panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xb code=0x1 addr=0x20 pc=0x463921]
goroutine 1 [running]:
io.ReadAtLeast(0x0, 0x0, 0xc200089002, 0x70, 0x7e, ...)
/usr/lib/go/src/pkg/io/io.go:284 +0xf1
io.ReadFull(0x0, 0x0, 0xc200089002, 0x70, 0x7e, ...)
/usr/lib/go/src/pkg/io/io.go:302 +0x6f
crypto/rsa.nonZeroRandomBytes(0xc200089002, 0x70, 0x7e, 0x0, 0x0, ...)
/usr/lib/go/src/pkg/crypto/rsa/pkcs1v15.go:134 +0x70
crypto/rsa.EncryptPKCS1v15(0x0, 0x0, 0xc20004c550, 0xc20004c560, 0xd, ...)
/usr/lib/go/src/pkg/crypto/rsa/pkcs1v15.go:35 +0x236
main.encode(0x536630, 0xd, 0x535ad0, 0x9, 0x54f1b0, ...)
/home/taot/programming/go/encrypt/read_cert.go:28 +0x355
main.main()
/home/taot/programming/go/encrypt/read_cert.go:12 +0x32
goroutine 2 [syscall]:
goroutine 3 [runnable]:
我的类型断言将 interface{} 转换为 *rsa.PublicKey 似乎有问题,但我没有收到编译错误。
这样做的正确方法是什么?提前致谢!
问候,特里