1/* 2 * Header file to maintain compatibility among different kernel versions. 3 * 4 * Copyright (c) 2004-2006 <lawrence_wang@realsil.com.cn> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. See README and COPYING for 9 * more details. 10 */ 11 12#include <linux/crypto.h> 13 14static inline int crypto_cipher_encrypt(struct crypto_tfm *tfm, 15 struct scatterlist *dst, 16 struct scatterlist *src, 17 unsigned int nbytes) 18{ 19 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER); 20 return tfm->crt_cipher.cit_encrypt(tfm, dst, src, nbytes); 21} 22 23 24static inline int crypto_cipher_decrypt(struct crypto_tfm *tfm, 25 struct scatterlist *dst, 26 struct scatterlist *src, 27 unsigned int nbytes) 28{ 29 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER); 30 return tfm->crt_cipher.cit_decrypt(tfm, dst, src, nbytes); 31} 32 33 struct crypto_tfm *crypto_alloc_tfm(const char *name, u32 flags) 34{ 35 struct crypto_tfm *tfm = NULL; 36 int err; 37 printk("call crypto_alloc_tfm!!!\n"); 38 do { 39 struct crypto_alg *alg; 40 41 alg = crypto_alg_mod_lookup(name, 0, CRYPTO_ALG_ASYNC); 42 err = PTR_ERR(alg); 43 if (IS_ERR(alg)) 44 continue; 45 46 tfm = __crypto_alloc_tfm(alg, flags); 47 err = 0; 48 if (IS_ERR(tfm)) { 49 crypto_mod_put(alg); 50 err = PTR_ERR(tfm); 51 tfm = NULL; 52 } 53 } while (err == -EAGAIN && !signal_pending(current)); 54 55 return tfm; 56} 57//EXPORT_SYMBOL_GPL(crypto_alloc_tfm); 58//EXPORT_SYMBOL_GPL(crypto_free_tfm); 59