__cast6_decrypt
ECB_BLOCK(1, __cast6_decrypt);
CBC_DEC_BLOCK(1, __cast6_decrypt);
EXPORT_SYMBOL_GPL(__cast6_decrypt);
__cast6_decrypt(crypto_tfm_ctx(tfm), outbuf, inbuf);
void __cast6_decrypt(const void *ctx, u8 *dst, const u8 *src);