35 lines
723 B
Go
35 lines
723 B
Go
package utils
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import (
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"crypto"
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"crypto/rsa"
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"crypto/sha256"
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"crypto/x509"
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"encoding/pem"
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"fmt"
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)
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// 解析PKCS1公钥
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// https://uutool.cn/rsa-generate/
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func ParsePKCS1PublicKey(publicKeyPEM string) (*rsa.PublicKey, error) {
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block, _ := pem.Decode([]byte(publicKeyPEM))
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if block == nil {
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return nil, fmt.Errorf("无效的公钥 -----BEGIN RSA PUBLIC KEY----- 编码")
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}
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pubKey, err := x509.ParsePKCS1PublicKey(block.Bytes)
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if err != nil {
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return nil, err
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}
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return pubKey, nil
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}
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// 验证签名
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func VerifySignature(publicKey *rsa.PublicKey, data, signature []byte) bool {
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hashed := sha256.Sum256(data)
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err := rsa.VerifyPKCS1v15(publicKey, crypto.SHA256, hashed[:], signature)
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return err == nil
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}
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