shishi_crypto3

Arguments

Shishi * handle

shishi handle as allocated by shishi_init().

Shishi_key * key

key to encrypt with.

int keyusage

integer specifying what this key will encrypt/decrypt.

int32_t etype

integer specifying what cipher to use.

const char * iv

input array with initialization vector

size_t ivlen

size of input array with initialization vector.

Overview

Initialize a crypto context. This store a key, keyusage, encryption type and initialization vector in a "context", and the caller can then use this context to perform encryption via shishi_crypto_encrypt() and decryption via shishi_crypto_encrypt() without supplying all those details again. The functions also takes care of propagating the IV between calls.

When the application no longer need to use the context, it should deallocate resources associated with it by calling shishi_crypto_close().

Return value

Return a newly allocated crypto context.