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sign.go
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sign.go
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package rsax
import (
"crypto"
"crypto/rand"
"crypto/rsa"
"crypto/x509"
"encoding/hex"
"github.com/go-leo/gox/cryptox/base64x"
"github.com/go-leo/gox/cryptox/shax"
)
func SignWithSha256Hex(data []byte, priKey string) (string, error) {
priBytes, err := hex.DecodeString(priKey)
if err != nil {
return "", err
}
privateKey, err := x509.ParsePKCS1PrivateKey(priBytes)
if err != nil {
return "", err
}
sign, err := rsa.SignPKCS1v15(rand.Reader, privateKey, crypto.SHA256, shax.Sha256(data))
if err != nil {
return "", err
}
return hex.EncodeToString(sign), nil
}
func VerifySignWithSha256Hex(data []byte, hexSign, hexPubKey string) error {
sig, err := hex.DecodeString(hexSign)
if err != nil {
return err
}
pubBytes, err := hex.DecodeString(hexPubKey)
if err != nil {
return err
}
pub, err := x509.ParsePKCS1PublicKey(pubBytes)
if err != nil {
return err
}
return rsa.VerifyPKCS1v15(pub, crypto.SHA256, shax.Sha256(data), sig)
}
func SignWithSha256Base64(data []byte, priKey string) (string, error) {
der, err := base64x.StdDecode(priKey)
if err != nil {
return "", err
}
priv, err := x509.ParsePKCS1PrivateKey(der)
if err != nil {
return "", err
}
sig, err := rsa.SignPKCS1v15(rand.Reader, priv, crypto.SHA256, shax.Sha256(data))
if err != nil {
return "", err
}
return base64x.StdEncode(sig), nil
}
func VerifySignWithSha256Base64(data []byte, base64Sign, base64PubKey string) error {
sig, err := base64x.StdDecode(base64Sign)
if err != nil {
return err
}
der, err := base64x.StdDecode(base64PubKey)
if err != nil {
return err
}
pub, err := x509.ParsePKCS1PublicKey(der)
if err != nil {
return err
}
return rsa.VerifyPKCS1v15(pub, crypto.SHA256, shax.Sha256(data), sig)
}