crypto.publicDecrypt(key, buffer)

• key {Object | string | Buffer | KeyObject}
  • 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 or crypto.constants.RSA_PKCS1_PADDING.
• buffer {Buffer | TypedArray | DataView}
• Returns: {Buffer} A new Buffer with the decrypted content.

Decrypts buffer with key.buffer was previously encrypted using the corresponding private key, for example using [crypto.privateEncrypt()][].

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_PADDING.

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

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