GO ParsePKIXPublicKey用法及代碼示例

GO語言"crypto/x509"包中"ParsePKIXPublicKey"函數的用法及代碼示例。

用法:

func ParsePKIXPublicKey(derBytes []byte)(pub any, err error)

ParsePKIXPublicKey 以 PKIX、ASN.1 DER 形式解析公鑰。編碼的公鑰是一個SubjectPublicKeyInfo 結構(參見 RFC 5280，第 4.1 節)。

它返回 *rsa PublicKey *dsa PublicKey *ecdsa PublicKey 或 ed25519 PublicKey 未來可能會支持更多類型。

這種 key 通常以"PUBLIC KEY" 類型的 PEM 塊編碼。

例子：

package main

import (
    "crypto/dsa"
    "crypto/ecdsa"
    "crypto/ed25519"
    "crypto/rsa"
    "crypto/x509"
    "encoding/pem"
    "fmt"
)

func main() {
    const pubPEM = `
-----BEGIN PUBLIC KEY-----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-----END PUBLIC KEY-----`

    block, _ := pem.Decode([]byte(pubPEM))
    if block == nil {
        panic("failed to parse PEM block containing the public key")
    }

    pub, err := x509.ParsePKIXPublicKey(block.Bytes)
    if err != nil {
        panic("failed to parse DER encoded public key: " + err.Error())
    }

    switch pub := pub.(type) {
    case *rsa.PublicKey:
        fmt.Println("pub is of type RSA:", pub)
    case *dsa.PublicKey:
        fmt.Println("pub is of type DSA:", pub)
    case *ecdsa.PublicKey:
        fmt.Println("pub is of type ECDSA:", pub)
    case ed25519.PublicKey:
        fmt.Println("pub is of type Ed25519:", pub)
    default:
        panic("unknown type of public key")
    }
}

相關用法

注：本文由純淨天空篩選整理自golang.google.cn大神的英文原創作品 ParsePKIXPublicKey。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。