sodium_crypto_stream_xchacha20_xor

(PHP 8 >= 8.1.0)

sodium_crypto_stream_xchacha20_xor — Encrypts a message using a nonce and a secret key (no authentication)

Description

sodium_crypto_stream_xchacha20_xor(string $message, string $nonce, string $key): string

Encrypts a message using a nonce and a secret key (no authentication).

Caution

This encryption is unauthenticated, and does not prevent chosen-ciphertext attacks. Make sure to combine the ciphertext with a Message Authentication Code, for example with sodium_crypto_aead_xchacha20poly1305_ietf_encrypt() function, or sodium_crypto_auth().

Parameters

message

The message to encrypt.

nonce

24-byte nonce.

key

Key, possibly generated from sodium_crypto_stream_xchacha20_keygen().

Return Values

Encrypted message.

See Also