6.1 Public Key Encryption

Encrypt the plaintext using RSA-OEAP.

Data Types

PKEEncKey

The RSA public key for public-key encryption with RSA.

PKEDecKey

The RSA private key, used for decryption.

Functions

PKEKeyGen() (PKEEncKey, PKEDecKey, error)

Generate a 256-byte RSA key pair for public-key encryption.

PKEEnc(ek PKEEncKey, plaintext []byte) (ciphertext []byte, err error)

Use the RSA public key to encrypt a message.

Parameters

ek (PKEEncKey) - RSA encryption (public) key
plaintext ([]byte) - message to encrypt

Returns

ciphertext ([]byte), err (error)

PKEDec(dk PKEDecKey, ciphertext []byte) (plaintext []byte, err error)

Use the RSA private key to decrypt a ciphertext.

Parameters

dk (PKEDecKey) - RSA decryption (private) key
ciphertext ([]byte) - message to decrypt

Returns

plaintext ([]byte), err (error)