38 lines
814 B
Go
38 lines
814 B
Go
package auth
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import (
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"crypto/rand"
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"crypto/rsa"
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"crypto/x509"
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"encoding/base64"
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"encoding/pem"
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"errors"
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)
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func ParsePublicKey(pemText string) (*rsa.PublicKey, error) {
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block, _ := pem.Decode([]byte(pemText))
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if block == nil {
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return nil, errors.New("invalid public key PEM")
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}
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pub, err := x509.ParsePKIXPublicKey(block.Bytes)
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if err != nil {
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return nil, err
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}
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rsaPub, ok := pub.(*rsa.PublicKey)
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if !ok {
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return nil, errors.New("public key is not RSA")
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}
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return rsaPub, nil
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}
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func EncryptAuthorization(pub *rsa.PublicKey, plaintext string) (string, error) {
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if pub == nil {
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return "", errors.New("public key is required")
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}
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out, err := rsa.EncryptPKCS1v15(rand.Reader, pub, []byte(plaintext))
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if err != nil {
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return "", err
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}
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return base64.StdEncoding.EncodeToString(out), nil
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}
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