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shishi_encrypt_iv_etype(3)          shishi          shishi_encrypt_iv_etype(3)

NAME

shishi_encrypt_iv_etype - API function

SYNOPSIS

#include <shishi.h> int shishi_encrypt_iv_etype(Shishi * handle, Shishi_key * key, int keyusage, int32_t etype, const char * iv, size_t ivlen, const char * in, size_t inlen, char ** out, size_t * outlen);

ARGUMENTS

Shishi * handle shishi handle as allocated by shishi_init(). Shishi_key * key key to encrypt with. int keyusage integer specifying what this key is encrypting. 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. const char * in input array with data to encrypt. size_t inlen size of input array with data to encrypt. char ** out output array with newly allocated encrypted data. size_t * outlen output variable with size of newly allocated output array.

DESCRIPTION

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. The next IV is lost, see shishi_encrypt_ivupdate_etype if you need it. 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.

RETURN VALUE

Returns SHISHI_OK iff successful.

REPORTING BUGS

Report bugs to <bug-shishi@gnu.org>.

COPYRIGHT

Copyright (C) 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 this notice are preserved.

SEE ALSO

The full documentation for shishi is maintained as a Texinfo manual. If the info and shishi programs are properly installed at your site, the command info shishi should give you access to the complete manual. shishi 1.0.2 shishi_encrypt_iv_etype(3)

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