Busk at 19:45, 15 March 2024

2024-03-15T19:45:02Z

Busk: Created page with "package pki import ( "crypto" "crypto/rand" "crypto/rsa" "crypto/sha256" "crypto/x509" "encoding/pem" "errors" ) // GenerateKeyPair generates a n..."

2024-03-15T19:44:50Z

Created page with "package pki import ( "crypto" "crypto/rand" "crypto/rsa" "crypto/sha256" "crypto/x509" "encoding/pem" "errors" ) // GenerateKeyPair generates a n..."

New page

package pki

import (
"crypto"
"crypto/rand"
"crypto/rsa"
"crypto/sha256"
"crypto/x509"
"encoding/pem"
"errors"
)

// GenerateKeyPair generates a new RSA public/private key pair.
func GenerateKeyPair() (*rsa.PrivateKey, *rsa.PublicKey, error) {
privateKey, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
return nil, nil, err
}
publicKey := &privateKey.PublicKey
return privateKey, publicKey, nil
}

// MarshalPrivateKeyPEM marshals an RSA private key to PEM format.
func MarshalPrivateKeyPEM(privateKey *rsa.PrivateKey) ([]byte, error) {
privateKeyBytes := x509.MarshalPKCS1PrivateKey(privateKey)
privateKeyPEM := pem.EncodeToMemory(&pem.Block{
Type: "RSA PRIVATE KEY",
Bytes: privateKeyBytes,
})
return privateKeyPEM, nil
}

// UnmarshalPrivateKeyPEM unmarshals an RSA private key from PEM format.
func UnmarshalPrivateKeyPEM(privateKeyPEM []byte) (*rsa.PrivateKey, error) {
block, _ := pem.Decode(privateKeyPEM)
if block == nil || block.Type != "RSA PRIVATE KEY" {
return nil, errors.New("failed to decode PEM block containing RSA private key")
}
privateKey, err := x509.ParsePKCS1PrivateKey(block.Bytes)
if err != nil {
return nil, err
}
return privateKey, nil
}

// Sign signs a message using an RSA private key.
func Sign(privateKey *rsa.PrivateKey, message []byte) ([]byte, error) {
hashed := sha256.Sum256(message)
signature, err := rsa.SignPKCS1v15(rand.Reader, privateKey, crypto.SHA256, hashed[:])
if err != nil {
return nil, err
}
return signature, nil
}

// Verify verifies a signature against a message using an RSA public key.
func Verify(publicKey *rsa.PublicKey, message []byte, signature []byte) error {
hashed := sha256.Sum256(message)
err := rsa.VerifyPKCS1v15(publicKey, crypto.SHA256, hashed[:], signature)
if err != nil {
return err
}
return nil
}

@@ Line 1: / Line 1: @@
 package pki
@@ Line 63: / Line 64: @@
      return nil
+}

Gopki - Revision history

Busk at 19:45, 15 March 2024

Busk: Created page with "package pki import ( "crypto" "crypto/rand" "crypto/rsa" "crypto/sha256" "crypto/x509" "encoding/pem" "errors" ) // GenerateKeyPair generates a n..."