# Functions
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NewCryptoWriter returns block cipher writer.
NewSecretBox returns a SecretBox object with a provided key.
Pkcs5pad is a padding function that uses the PKCS5 method.
Pkcs5unpad is a stripping function that reverts the PKCS5 method.
# Variables
ErrShortCiphertext is an error that has text too short.
# Interfaces
SecretBox is an encryption and decryption provider.