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rsa_from.go
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/
rsa_from.go
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package rsa
import (
"math/big"
"crypto/rsa"
"crypto/rand"
cryptobin_tool "github.com/deatil/go-cryptobin/tool"
)
// 私钥
func (this Rsa) FromPrivateKey(key []byte) Rsa {
privateKey, err := this.ParsePrivateKeyFromPEM(key)
if err != nil {
return this.AppendError(err)
}
this.privateKey = privateKey
return this
}
// 私钥带密码
func (this Rsa) FromPrivateKeyWithPassword(key []byte, password string) Rsa {
privateKey, err := this.ParsePKCS8PrivateKeyFromPEMWithPassword(key, password)
if err == nil {
this.privateKey = privateKey
return this
}
privateKey, err = this.ParsePrivateKeyFromPEMWithPassword(key, password)
if err != nil {
return this.AppendError(err)
}
this.privateKey = privateKey
return this
}
// 公钥
func (this Rsa) FromPublicKey(key []byte) Rsa {
var publicKey *rsa.PublicKey
var err error
publicKey, err = this.ParsePKCS1PublicKeyFromPEM(key)
if err != nil {
publicKey, err = this.ParsePKCS8PublicKeyFromPEM(key)
if err != nil {
return this.AppendError(err)
}
}
this.publicKey = publicKey
return this
}
// 生成密钥
// bits = 512 | 1024 | 2048 | 4096
func (this Rsa) GenerateKey(bits int) Rsa {
privateKey, err := rsa.GenerateKey(rand.Reader, bits)
if err != nil {
return this.AppendError(err)
}
this.privateKey = privateKey
// 生成公钥
this.publicKey = &this.privateKey.PublicKey
return this
}
// ==========
// 模数、指数生成公钥
// 指数默认为 10001
func (this Rsa) FromPublicKeyNE(nString string, e int) Rsa {
n, _ := new(big.Int).SetString(nString[:], 16)
this.publicKey = &rsa.PublicKey{
N: n,
E: e,
}
return this
}
// ==========
// Pkcs1
func (this Rsa) FromPKCS1PrivateKey(key []byte) Rsa {
privateKey, err := this.ParsePrivateKeyFromPEM(key)
if err != nil {
return this.AppendError(err)
}
this.privateKey = privateKey
return this
}
// Pkcs1WithPassword
func (this Rsa) FromPKCS1PrivateKeyWithPassword(key []byte, password string) Rsa {
privateKey, err := this.ParsePrivateKeyFromPEMWithPassword(key, password)
if err != nil {
return this.AppendError(err)
}
this.privateKey = privateKey
return this
}
// PKCS1 公钥
func (this Rsa) FromPKCS1PublicKey(key []byte) Rsa {
publicKey, err := this.ParsePKCS1PublicKeyFromPEM(key)
if err != nil {
return this.AppendError(err)
}
this.publicKey = publicKey
return this
}
// Pkcs8
func (this Rsa) FromPKCS8PrivateKey(key []byte) Rsa {
privateKey, err := this.ParsePrivateKeyFromPEM(key)
if err != nil {
return this.AppendError(err)
}
this.privateKey = privateKey
return this
}
// Pkcs8WithPassword
func (this Rsa) FromPKCS8PrivateKeyWithPassword(key []byte, password string) Rsa {
privateKey, err := this.ParsePKCS8PrivateKeyFromPEMWithPassword(key, password)
if err != nil {
return this.AppendError(err)
}
this.privateKey = privateKey
return this
}
// PKCS8 公钥
func (this Rsa) FromPKCS8PublicKey(key []byte) Rsa {
publicKey, err := this.ParsePKCS8PublicKeyFromPEM(key)
if err != nil {
return this.AppendError(err)
}
this.publicKey = publicKey
return this
}
// Pkcs12 Cert
func (this Rsa) FromPKCS12Cert(key []byte) Rsa {
privateKey, err := this.ParsePKCS12CertFromPEMWithPassword(key, "")
if err != nil {
return this.AppendError(err)
}
this.privateKey = privateKey
return this
}
// Pkcs12CertWithPassword
func (this Rsa) FromPKCS12CertWithPassword(key []byte, password string) Rsa {
privateKey, err := this.ParsePKCS12CertFromPEMWithPassword(key, password)
if err != nil {
return this.AppendError(err)
}
this.privateKey = privateKey
return this
}
// ==========
// 字节
func (this Rsa) FromBytes(data []byte) Rsa {
this.data = data
return this
}
// 字符
func (this Rsa) FromString(data string) Rsa {
this.data = []byte(data)
return this
}
// Base64
func (this Rsa) FromBase64String(data string) Rsa {
newData, err := cryptobin_tool.NewEncoding().Base64Decode(data)
if err != nil {
return this.AppendError(err)
}
this.data = newData
return this
}
// Hex
func (this Rsa) FromHexString(data string) Rsa {
newData, err := cryptobin_tool.NewEncoding().HexDecode(data)
if err != nil {
return this.AppendError(err)
}
this.data = newData
return this
}