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create.go
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create.go
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package ecdsa
import (
"errors"
"crypto/rand"
"crypto/x509"
"encoding/pem"
"github.com/deatil/go-cryptobin/pkcs1"
"github.com/deatil/go-cryptobin/pkcs8"
)
type (
// 配置
Opts = pkcs8.Opts
// PBKDF2 配置
PBKDF2Opts = pkcs8.PBKDF2Opts
// Scrypt 配置
ScryptOpts = pkcs8.ScryptOpts
)
var (
// 获取 Cipher 类型
GetCipherFromName = pkcs8.GetCipherFromName
// 获取 hash 类型
GetHashFromName = pkcs8.GetHashFromName
)
// 生成私钥 pem 数据, PKCS1 别名
// 使用:
// obj := New().WithCurve("P521").GenerateKey()
// priKey := obj.CreatePrivateKey().ToKeyString()
func (this ECDSA) CreatePrivateKey() ECDSA {
return this.CreatePKCS1PrivateKey()
}
// 生成私钥带密码 pem 数据, PKCS1 别名
// CreatePrivateKeyWithPassword("123", "AES256CBC")
// PEMCipher: DESCBC | DESEDE3CBC | AES128CBC | AES192CBC | AES256CBC
func (this ECDSA) CreatePrivateKeyWithPassword(password string, opts ...string) ECDSA {
return this.CreatePKCS1PrivateKeyWithPassword(password, opts...)
}
// ====================
// 生成私钥 pem 数据
func (this ECDSA) CreatePKCS1PrivateKey() ECDSA {
if this.privateKey == nil {
err := errors.New("privateKey empty.")
return this.AppendError(err)
}
publicKeyBytes, err := x509.MarshalECPrivateKey(this.privateKey)
if err != nil {
return this.AppendError(err)
}
privateBlock := &pem.Block{
Type: "EC PRIVATE KEY",
Bytes: publicKeyBytes,
}
this.keyData = pem.EncodeToMemory(privateBlock)
return this
}
// 生成私钥带密码 pem 数据
func (this ECDSA) CreatePKCS1PrivateKeyWithPassword(password string, opts ...string) ECDSA {
if this.privateKey == nil {
err := errors.New("privateKey empty.")
return this.AppendError(err)
}
opt := "AES256CBC"
if len(opts) > 0 {
opt = opts[0]
}
// 加密方式
cipher := pkcs1.GetPEMCipher(opt)
if cipher == nil {
err := errors.New("PEMCipher not exists.")
return this.AppendError(err)
}
// 生成私钥
publicKeyBytes, err := x509.MarshalECPrivateKey(this.privateKey)
if err != nil {
return this.AppendError(err)
}
// 生成加密数据
privateBlock, err := pkcs1.EncryptPEMBlock(
rand.Reader,
"EC PRIVATE KEY",
publicKeyBytes,
[]byte(password),
cipher,
)
if err != nil {
return this.AppendError(err)
}
this.keyData = pem.EncodeToMemory(privateBlock)
return this
}
// ====================
// 生成 PKCS8 私钥 pem 数据
func (this ECDSA) CreatePKCS8PrivateKey() ECDSA {
if this.privateKey == nil {
err := errors.New("privateKey empty.")
return this.AppendError(err)
}
publicKeyBytes, err := x509.MarshalPKCS8PrivateKey(this.privateKey)
if err != nil {
return this.AppendError(err)
}
privateBlock := &pem.Block{
Type: "PRIVATE KEY",
Bytes: publicKeyBytes,
}
this.keyData = pem.EncodeToMemory(privateBlock)
return this
}
// 生成 PKCS8 私钥带密码 pem 数据
// CreatePKCS8PrivateKeyWithPassword("123", "AES256CBC", "SHA256")
func (this ECDSA) CreatePKCS8PrivateKeyWithPassword(password string, opts ...any) ECDSA {
if this.privateKey == nil {
err := errors.New("privateKey empty.")
return this.AppendError(err)
}
opt, err := pkcs8.ParseOpts(opts...)
if err != nil {
return this.AppendError(err)
}
// 生成私钥
publicKeyBytes, err := x509.MarshalPKCS8PrivateKey(this.privateKey)
if err != nil {
return this.AppendError(err)
}
// 生成加密数据
privateBlock, err := pkcs8.EncryptPEMBlock(
rand.Reader,
"ENCRYPTED PRIVATE KEY",
publicKeyBytes,
[]byte(password),
opt,
)
if err != nil {
return this.AppendError(err)
}
this.keyData = pem.EncodeToMemory(privateBlock)
return this
}
// ====================
// 生成公钥 pem 数据
func (this ECDSA) CreatePublicKey() ECDSA {
if this.publicKey == nil {
err := errors.New("publicKey empty.")
return this.AppendError(err)
}
publicKeyBytes, err := x509.MarshalPKIXPublicKey(this.publicKey)
if err != nil {
return this.AppendError(err)
}
publicBlock := &pem.Block{
Type: "PUBLIC KEY",
Bytes: publicKeyBytes,
}
this.keyData = pem.EncodeToMemory(publicBlock)
return this
}