crypto publicencrypt key buffer

• key {Object | string | Buffer | KeyObject}
  • key {string | Buffer | KeyObject} A PEM encoded public or private key.
  • oaepHash {string} The hash function to use for OAEP padding and MGF1. Default: 'sha1'
  • oaepLabel {Buffer | TypedArray | DataView} The label to use for OAEP padding. If not specified, no label is used.
  • passphrase {string | Buffer} An optional passphrase for the private key.
  • padding {crypto.constants} An optional padding value defined in crypto.constants, which may be: crypto.constants.RSA_NO_PADDING, crypto.constants.RSA_PKCS1_PADDING, or crypto.constants.RSA_PKCS1_OAEP_PADDING.
• buffer {Buffer | TypedArray | DataView}
• Returns: {Buffer} A new Buffer with the encrypted content.

Encrypts the content of buffer with key and returns a new [Buffer][] with encrypted content. The returned data can be decrypted using the corresponding private key, for example using [crypto.privateDecrypt()][].

If key is not a [KeyObject][], this function behaves as if key had been passed to [crypto.createPublicKey()][]. If it is an object, the padding property can be passed. Otherwise, this function uses RSA_PKCS1_OAEP_PADDING.

Because RSA public keys can be derived from private keys, a private key may be passed instead of a public key.