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(PHP 7 >= 7.2.0, PHP 8)
sodium_crypto_sign_open — Check that the signed message has a valid signature
$signed_message, string $public_key): string|false
Verify the signature attached to a message and return the message
signed_message
A message signed with sodium_crypto_sign()
public_key
An Ed25519 public key
Returns the original signed message on success, 或者在失败时返回 false.
