shishi_encrypt_ivupdate_etype(3) | shishi | shishi_encrypt_ivupdate_etype(3) |
shishi_encrypt_ivupdate_etype - API function
#include <shishi.h>
int shishi_encrypt_ivupdate_etype(Shishi * handle, Shishi_key * key, int keyusage, int32_t etype, const char * iv, size_t ivlen, char ** ivout, size_t * ivoutlen, const char * in, size_t inlen, char ** out, size_t * outlen);
Encrypts data as per encryption method using specified initialization vector and key. The key actually used is derived using the key usage. If key usage is 0, no key derivation is used. The OUT buffer must be deallocated by the caller. If IVOUT or IVOUTLEN is NULL, the updated IV is not saved anywhere.
Note that DECRYPT(ENCRYPT(data)) does not necessarily yield data exactly. Some encryption types add pad to make the data fit into the block size of the encryption algorithm. Furthermore, the pad is not guaranteed to look in any special way, although existing implementations often pad with the zero byte. This means that you may have to "frame" data, so it is possible to infer the original length after decryption. Compare ASN.1 DER which contains such information.
Returns SHISHI_OK iff successful.
Report bugs to <bug-shishi@gnu.org>.
Copyright © 2002-2010 Simon Josefsson.
Copying and distribution of this file, with or without modification, are
permitted in any medium without royalty provided the copyright notice and
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1.0.2 | shishi |