sodium_crypto_sign

    (PHP 7 >= 7.2.0, PHP 8)

    sodium_crypto_sign — Sign a message

    Descrizione

    sodium_crypto_sign(string $message, #[\SensitiveParameter] string $secret_key): string

    Sign a message with a secret key, that can be verified by the corresponding public key. This function attaches the signature to the message. See sodium_crypto_sign_detached() for detached signatures.

    Elenco dei parametri

    message

    Message to sign.

    secret_key

    Secret key. See sodium_crypto_sign_secretkey()

    Valori restituiti

    Signed message (not encrypted).

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    User Contributed Notes 1 note

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    craig at craigfrancis dot co dot uk
    6 years ago
    Here's a quick example on how to use sodium_crypto_sign(); where you have a message that you want to sign, so anyone with the public key can confirm that the message hasn't been tampered with.This is similar to sodium_crypto_sign_detached(), but the returned string contains the original message as well (in plain text, at the end, so anyone can read it).<?php// $sign_seed = random_bytes(SODIUM_CRYPTO_SIGN_SEEDBYTES);// $sign_pair = sodium_crypto_sign_seed_keypair($sign_seed);$sign_pair = sodium_crypto_sign_keypair();$sign_secret = sodium_crypto_sign_secretkey($sign_pair);$sign_public = sodium_crypto_sign_publickey($sign_pair);//--------------------------------------------------// Person 1, signing$message = 'Hello';$message_signed = sodium_crypto_sign($message, $sign_secret);//--------------------------------------------------// Person 2, verifying$message = sodium_crypto_sign_open($message_signed, $sign_public);echo $message . "\n";?>
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