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create.go
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create.go
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package elgamal
import (
"errors"
"crypto/rand"
"encoding/pem"
"github.com/deatil/go-cryptobin/pkcs1"
"github.com/deatil/go-cryptobin/pkcs8"
"github.com/deatil/go-cryptobin/elgamal"
)
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
// elgamal := New().GenerateKey("L2048N256")
// priKey := elgamal.CreatePrivateKey().ToKeyString()
func (this EIGamal) CreatePrivateKey() EIGamal {
return this.CreatePKCS1PrivateKey()
}
// 生成私钥带密码 pem 数据
// CreatePrivateKeyWithPassword("123", "AES256CBC")
// PEMCipher: DESCBC | DESEDE3CBC | AES128CBC | AES192CBC | AES256CBC
func (this EIGamal) CreatePrivateKeyWithPassword(password string, opts ...string) EIGamal {
return this.CreatePKCS1PrivateKeyWithPassword(password, opts...)
}
// 生成公钥 pem 数据
func (this EIGamal) CreatePublicKey() EIGamal {
return this.CreatePKCS1PublicKey()
}
// ==========
// 生成 pkcs1 私钥 pem 数据
func (this EIGamal) CreatePKCS1PrivateKey() EIGamal {
if this.privateKey == nil {
err := errors.New("privateKey empty.")
return this.AppendError(err)
}
privateKeyBytes, err := elgamal.MarshalPKCS1PrivateKey(this.privateKey)
if err != nil {
return this.AppendError(err)
}
privateBlock := &pem.Block{
Type: "EIGamal PRIVATE KEY",
Bytes: privateKeyBytes,
}
this.keyData = pem.EncodeToMemory(privateBlock)
return this
}
// 生成 pkcs1 私钥带密码 pem 数据
// CreatePKCS1PrivateKeyWithPassword("123", "AES256CBC")
// PEMCipher: DESCBC | DESEDE3CBC | AES128CBC | AES192CBC | AES256CBC
func (this EIGamal) CreatePKCS1PrivateKeyWithPassword(password string, opts ...string) EIGamal {
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
privateKeyBytes, err := elgamal.MarshalPKCS1PrivateKey(this.privateKey)
if err != nil {
return this.AppendError(err)
}
// 生成加密数据
privateBlock, err := pkcs1.EncryptPEMBlock(
rand.Reader,
"EIGamal PRIVATE KEY",
privateKeyBytes,
[]byte(password),
cipher,
)
if err != nil {
return this.AppendError(err)
}
this.keyData = pem.EncodeToMemory(privateBlock)
return this
}
// 生成 pkcs1 公钥 pem 数据
func (this EIGamal) CreatePKCS1PublicKey() EIGamal {
if this.publicKey == nil {
err := errors.New("publicKey empty.")
return this.AppendError(err)
}
publicKeyBytes, err := elgamal.MarshalPKCS1PublicKey(this.publicKey)
if err != nil {
return this.AppendError(err)
}
publicBlock := &pem.Block{
Type: "EIGamal PUBLIC KEY",
Bytes: publicKeyBytes,
}
this.keyData = pem.EncodeToMemory(publicBlock)
return this
}
// ==========
// 生成 pkcs8 私钥 pem 数据
func (this EIGamal) CreatePKCS8PrivateKey() EIGamal {
if this.privateKey == nil {
err := errors.New("privateKey empty.")
return this.AppendError(err)
}
privateKeyBytes, err := elgamal.MarshalPKCS8PrivateKey(this.privateKey)
if err != nil {
return this.AppendError(err)
}
privateBlock := &pem.Block{
Type: "PRIVATE KEY",
Bytes: privateKeyBytes,
}
this.keyData = pem.EncodeToMemory(privateBlock)
return this
}
// 生成 PKCS8 私钥带密码 pem 数据
// CreatePKCS8PrivateKeyWithPassword("123", "AES256CBC", "SHA256")
func (this EIGamal) CreatePKCS8PrivateKeyWithPassword(password string, opts ...any) EIGamal {
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
privateKeyBytes, err := elgamal.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",
privateKeyBytes,
[]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 EIGamal) CreatePKCS8PublicKey() EIGamal {
if this.publicKey == nil {
err := errors.New("publicKey empty.")
return this.AppendError(err)
}
publicKeyBytes, err := elgamal.MarshalPKCS8PublicKey(this.publicKey)
if err != nil {
return this.AppendError(err)
}
publicBlock := &pem.Block{
Type: "PUBLIC KEY",
Bytes: publicKeyBytes,
}
this.keyData = pem.EncodeToMemory(publicBlock)
return this
}
// ====================
// 生成私钥 xml 数据
func (this EIGamal) CreateXMLPrivateKey() EIGamal {
if this.privateKey == nil {
err := errors.New("privateKey empty.")
return this.AppendError(err)
}
xmlPrivateKey, err := elgamal.MarshalXMLPrivateKey(this.privateKey)
if err != nil {
return this.AppendError(err)
}
this.keyData = xmlPrivateKey
return this
}
// 生成公钥 xml 数据
func (this EIGamal) CreateXMLPublicKey() EIGamal {
if this.publicKey == nil {
err := errors.New("publicKey empty.")
return this.AppendError(err)
}
xmlPublicKey, err := elgamal.MarshalXMLPublicKey(this.publicKey)
if err != nil {
return this.AppendError(err)
}
this.keyData = xmlPublicKey
return this
}