diff options
| -rw-r--r-- | crypto/api.c | 15 | ||||
| -rw-r--r-- | crypto/cipher.c | 92 | ||||
| -rw-r--r-- | crypto/internal.h | 2 | ||||
| -rw-r--r-- | include/linux/crypto.h | 48 |
4 files changed, 43 insertions, 114 deletions
diff --git a/crypto/api.c b/crypto/api.c index 268129979bc2..ef96142ceca7 100644 --- a/crypto/api.c +++ b/crypto/api.c @@ -295,20 +295,7 @@ static int crypto_init_ops(struct crypto_tfm *tfm, u32 type, u32 mask) if (type_obj) return type_obj->init(tfm, type, mask); - - switch (crypto_tfm_alg_type(tfm)) { - case CRYPTO_ALG_TYPE_CIPHER: - return crypto_init_cipher_ops(tfm); - - case CRYPTO_ALG_TYPE_COMPRESS: - return 0; - - default: - break; - } - - BUG(); - return -EINVAL; + return 0; } static void crypto_exit_ops(struct crypto_tfm *tfm) diff --git a/crypto/cipher.c b/crypto/cipher.c index 108427026e7c..aadd51cb7250 100644 --- a/crypto/cipher.c +++ b/crypto/cipher.c @@ -2,7 +2,7 @@ /* * Cryptographic API. * - * Cipher operations. + * Single-block cipher operations. * * Copyright (c) 2002 James Morris <jmorris@intercode.com.au> * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au> @@ -16,11 +16,11 @@ #include <linux/string.h> #include "internal.h" -static int setkey_unaligned(struct crypto_tfm *tfm, const u8 *key, +static int setkey_unaligned(struct crypto_cipher *tfm, const u8 *key, unsigned int keylen) { - struct cipher_alg *cia = &tfm->__crt_alg->cra_cipher; - unsigned long alignmask = crypto_tfm_alg_alignmask(tfm); + struct cipher_alg *cia = crypto_cipher_alg(tfm); + unsigned long alignmask = crypto_cipher_alignmask(tfm); int ret; u8 *buffer, *alignbuffer; unsigned long absize; @@ -32,83 +32,63 @@ static int setkey_unaligned(struct crypto_tfm *tfm, const u8 *key, alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1); memcpy(alignbuffer, key, keylen); - ret = cia->cia_setkey(tfm, alignbuffer, keylen); + ret = cia->cia_setkey(crypto_cipher_tfm(tfm), alignbuffer, keylen); memset(alignbuffer, 0, keylen); kfree(buffer); return ret; } -static int setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen) +int crypto_cipher_setkey(struct crypto_cipher *tfm, + const u8 *key, unsigned int keylen) { - struct cipher_alg *cia = &tfm->__crt_alg->cra_cipher; - unsigned long alignmask = crypto_tfm_alg_alignmask(tfm); + struct cipher_alg *cia = crypto_cipher_alg(tfm); + unsigned long alignmask = crypto_cipher_alignmask(tfm); - tfm->crt_flags &= ~CRYPTO_TFM_RES_MASK; + crypto_cipher_clear_flags(tfm, CRYPTO_TFM_RES_MASK); if (keylen < cia->cia_min_keysize || keylen > cia->cia_max_keysize) { - tfm->crt_flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; + crypto_cipher_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN); return -EINVAL; } if ((unsigned long)key & alignmask) return setkey_unaligned(tfm, key, keylen); - return cia->cia_setkey(tfm, key, keylen); + return cia->cia_setkey(crypto_cipher_tfm(tfm), key, keylen); } +EXPORT_SYMBOL_GPL(crypto_cipher_setkey); -static void cipher_crypt_unaligned(void (*fn)(struct crypto_tfm *, u8 *, - const u8 *), - struct crypto_tfm *tfm, - u8 *dst, const u8 *src) +static inline void cipher_crypt_one(struct crypto_cipher *tfm, + u8 *dst, const u8 *src, bool enc) { - unsigned long alignmask = crypto_tfm_alg_alignmask(tfm); - unsigned int size = crypto_tfm_alg_blocksize(tfm); - u8 buffer[MAX_CIPHER_BLOCKSIZE + MAX_CIPHER_ALIGNMASK]; - u8 *tmp = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1); - - memcpy(tmp, src, size); - fn(tfm, tmp, tmp); - memcpy(dst, tmp, size); -} - -static void cipher_encrypt_unaligned(struct crypto_tfm *tfm, - u8 *dst, const u8 *src) -{ - unsigned long alignmask = crypto_tfm_alg_alignmask(tfm); - struct cipher_alg *cipher = &tfm->__crt_alg->cra_cipher; + unsigned long alignmask = crypto_cipher_alignmask(tfm); + struct cipher_alg *cia = crypto_cipher_alg(tfm); + void (*fn)(struct crypto_tfm *, u8 *, const u8 *) = + enc ? cia->cia_encrypt : cia->cia_decrypt; if (unlikely(((unsigned long)dst | (unsigned long)src) & alignmask)) { - cipher_crypt_unaligned(cipher->cia_encrypt, tfm, dst, src); - return; + unsigned int bs = crypto_cipher_blocksize(tfm); + u8 buffer[MAX_CIPHER_BLOCKSIZE + MAX_CIPHER_ALIGNMASK]; + u8 *tmp = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1); + + memcpy(tmp, src, bs); + fn(crypto_cipher_tfm(tfm), tmp, tmp); + memcpy(dst, tmp, bs); + } else { + fn(crypto_cipher_tfm(tfm), dst, src); } - - cipher->cia_encrypt(tfm, dst, src); } -static void cipher_decrypt_unaligned(struct crypto_tfm *tfm, - u8 *dst, const u8 *src) +void crypto_cipher_encrypt_one(struct crypto_cipher *tfm, + u8 *dst, const u8 *src) { - unsigned long alignmask = crypto_tfm_alg_alignmask(tfm); - struct cipher_alg *cipher = &tfm->__crt_alg->cra_cipher; - - if (unlikely(((unsigned long)dst | (unsigned long)src) & alignmask)) { - cipher_crypt_unaligned(cipher->cia_decrypt, tfm, dst, src); - return; - } - - cipher->cia_decrypt(tfm, dst, src); + cipher_crypt_one(tfm, dst, src, true); } +EXPORT_SYMBOL_GPL(crypto_cipher_encrypt_one); -int crypto_init_cipher_ops(struct crypto_tfm *tfm) +void crypto_cipher_decrypt_one(struct crypto_cipher *tfm, + u8 *dst, const u8 *src) { - struct cipher_tfm *ops = &tfm->crt_cipher; - struct cipher_alg *cipher = &tfm->__crt_alg->cra_cipher; - - ops->cit_setkey = setkey; - ops->cit_encrypt_one = crypto_tfm_alg_alignmask(tfm) ? - cipher_encrypt_unaligned : cipher->cia_encrypt; - ops->cit_decrypt_one = crypto_tfm_alg_alignmask(tfm) ? - cipher_decrypt_unaligned : cipher->cia_decrypt; - - return 0; + cipher_crypt_one(tfm, dst, src, false); } +EXPORT_SYMBOL_GPL(crypto_cipher_decrypt_one); diff --git a/crypto/internal.h b/crypto/internal.h index a58a2af4b669..ff06a3bd1ca1 100644 --- a/crypto/internal.h +++ b/crypto/internal.h @@ -58,8 +58,6 @@ static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg) struct crypto_alg *crypto_mod_get(struct crypto_alg *alg); struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask); -int crypto_init_cipher_ops(struct crypto_tfm *tfm); - struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask); void crypto_larval_kill(struct crypto_alg *alg); void crypto_alg_tested(const char *name, int err); diff --git a/include/linux/crypto.h b/include/linux/crypto.h index 8f708564b98b..c23f1eed7970 100644 --- a/include/linux/crypto.h +++ b/include/linux/crypto.h @@ -599,23 +599,10 @@ int crypto_has_alg(const char *name, u32 type, u32 mask); * crypto_free_*(), as well as the various helpers below. */ -struct cipher_tfm { - int (*cit_setkey)(struct crypto_tfm *tfm, - const u8 *key, unsigned int keylen); - void (*cit_encrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src); - void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src); -}; - -#define crt_cipher crt_u.cipher - struct crypto_tfm { u32 crt_flags; - union { - struct cipher_tfm cipher; - } crt_u; - void (*exit)(struct crypto_tfm *tfm); struct crypto_alg *__crt_alg; @@ -752,12 +739,6 @@ static inline struct crypto_cipher *__crypto_cipher_cast(struct crypto_tfm *tfm) return (struct crypto_cipher *)tfm; } -static inline struct crypto_cipher *crypto_cipher_cast(struct crypto_tfm *tfm) -{ - BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER); - return __crypto_cipher_cast(tfm); -} - /** * crypto_alloc_cipher() - allocate single block cipher handle * @alg_name: is the cra_name / name or cra_driver_name / driver name of the @@ -815,11 +796,6 @@ static inline int crypto_has_cipher(const char *alg_name, u32 type, u32 mask) return crypto_has_alg(alg_name, type, mask); } -static inline struct cipher_tfm *crypto_cipher_crt(struct crypto_cipher *tfm) -{ - return &crypto_cipher_tfm(tfm)->crt_cipher; -} - /** * crypto_cipher_blocksize() - obtain block size for cipher * @tfm: cipher handle @@ -873,12 +849,8 @@ static inline void crypto_cipher_clear_flags(struct crypto_cipher *tfm, * * Return: 0 if the setting of the key was successful; < 0 if an error occurred */ -static inline int crypto_cipher_setkey(struct crypto_cipher *tfm, - const u8 *key, unsigned int keylen) -{ - return crypto_cipher_crt(tfm)->cit_setkey(crypto_cipher_tfm(tfm), - key, keylen); -} +int crypto_cipher_setkey(struct crypto_cipher *tfm, + const u8 *key, unsigned int keylen); /** * crypto_cipher_encrypt_one() - encrypt one block of plaintext @@ -889,12 +861,8 @@ static inline int crypto_cipher_setkey(struct crypto_cipher *tfm, * Invoke the encryption operation of one block. The caller must ensure that * the plaintext and ciphertext buffers are at least one block in size. */ -static inline void crypto_cipher_encrypt_one(struct crypto_cipher *tfm, - u8 *dst, const u8 *src) -{ - crypto_cipher_crt(tfm)->cit_encrypt_one(crypto_cipher_tfm(tfm), - dst, src); -} +void crypto_cipher_encrypt_one(struct crypto_cipher *tfm, + u8 *dst, const u8 *src); /** * crypto_cipher_decrypt_one() - decrypt one block of ciphertext @@ -905,12 +873,8 @@ static inline void crypto_cipher_encrypt_one(struct crypto_cipher *tfm, * Invoke the decryption operation of one block. The caller must ensure that * the plaintext and ciphertext buffers are at least one block in size. */ -static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm, - u8 *dst, const u8 *src) -{ - crypto_cipher_crt(tfm)->cit_decrypt_one(crypto_cipher_tfm(tfm), - dst, src); -} +void crypto_cipher_decrypt_one(struct crypto_cipher *tfm, + u8 *dst, const u8 *src); static inline struct crypto_comp *__crypto_comp_cast(struct crypto_tfm *tfm) { |