tristate
select CRYPTO_ALGAPI
+config CRYPTO_HASH
+ tristate
+ select CRYPTO_ALGAPI
+
config CRYPTO_MANAGER
tristate "Cryptographic algorithm manager"
select CRYPTO_ALGAPI
obj-$(CONFIG_CRYPTO_BLKCIPHER) += blkcipher.o
+crypto_hash-objs := hash.o
+obj-$(CONFIG_CRYPTO_HASH) += crypto_hash.o
+
obj-$(CONFIG_CRYPTO_MANAGER) += cryptomgr.o
obj-$(CONFIG_CRYPTO_HMAC) += hmac.o
obj-$(CONFIG_CRYPTO_NULL) += crypto_null.o
* any later version.
*
*/
-#include <linux/crypto.h>
+
#include <linux/mm.h>
#include <linux/errno.h>
#include <linux/highmem.h>
-#include <asm/scatterlist.h>
+#include <linux/module.h>
+#include <linux/scatterlist.h>
+
#include "internal.h"
+#include "scatterwalk.h"
-static void init(struct crypto_tfm *tfm)
+void crypto_digest_init(struct crypto_tfm *tfm)
{
- tfm->__crt_alg->cra_digest.dia_init(tfm);
+ struct crypto_hash *hash = crypto_hash_cast(tfm);
+ struct hash_desc desc = { .tfm = hash, .flags = tfm->crt_flags };
+
+ crypto_hash_init(&desc);
}
+EXPORT_SYMBOL_GPL(crypto_digest_init);
-static void update(struct crypto_tfm *tfm,
- struct scatterlist *sg, unsigned int nsg)
+void crypto_digest_update(struct crypto_tfm *tfm,
+ struct scatterlist *sg, unsigned int nsg)
{
+ struct crypto_hash *hash = crypto_hash_cast(tfm);
+ struct hash_desc desc = { .tfm = hash, .flags = tfm->crt_flags };
+ unsigned int nbytes = 0;
unsigned int i;
+
+ for (i = 0; i < nsg; i++)
+ nbytes += sg[i].length;
+
+ crypto_hash_update(&desc, sg, nbytes);
+}
+EXPORT_SYMBOL_GPL(crypto_digest_update);
+
+void crypto_digest_final(struct crypto_tfm *tfm, u8 *out)
+{
+ struct crypto_hash *hash = crypto_hash_cast(tfm);
+ struct hash_desc desc = { .tfm = hash, .flags = tfm->crt_flags };
+
+ crypto_hash_final(&desc, out);
+}
+EXPORT_SYMBOL_GPL(crypto_digest_final);
+
+void crypto_digest_digest(struct crypto_tfm *tfm,
+ struct scatterlist *sg, unsigned int nsg, u8 *out)
+{
+ struct crypto_hash *hash = crypto_hash_cast(tfm);
+ struct hash_desc desc = { .tfm = hash, .flags = tfm->crt_flags };
+ unsigned int nbytes = 0;
+ unsigned int i;
+
+ for (i = 0; i < nsg; i++)
+ nbytes += sg[i].length;
+
+ crypto_hash_digest(&desc, sg, nbytes, out);
+}
+EXPORT_SYMBOL_GPL(crypto_digest_digest);
+
+static int init(struct hash_desc *desc)
+{
+ struct crypto_tfm *tfm = crypto_hash_tfm(desc->tfm);
+
+ tfm->__crt_alg->cra_digest.dia_init(tfm);
+ return 0;
+}
+
+static int update(struct hash_desc *desc,
+ struct scatterlist *sg, unsigned int nbytes)
+{
+ struct crypto_tfm *tfm = crypto_hash_tfm(desc->tfm);
unsigned int alignmask = crypto_tfm_alg_alignmask(tfm);
- for (i = 0; i < nsg; i++) {
+ if (!nbytes)
+ return 0;
+
+ for (;;) {
+ struct page *pg = sg->page;
+ unsigned int offset = sg->offset;
+ unsigned int l = sg->length;
- struct page *pg = sg[i].page;
- unsigned int offset = sg[i].offset;
- unsigned int l = sg[i].length;
+ if (unlikely(l > nbytes))
+ l = nbytes;
+ nbytes -= l;
do {
unsigned int bytes_from_page = min(l, ((unsigned int)
tfm->__crt_alg->cra_digest.dia_update(tfm, p,
bytes_from_page);
crypto_kunmap(src, 0);
- crypto_yield(tfm->crt_flags);
+ crypto_yield(desc->flags);
offset = 0;
pg++;
l -= bytes_from_page;
} while (l > 0);
+
+ if (!nbytes)
+ break;
+ sg = sg_next(sg);
}
+
+ return 0;
}
-static void final(struct crypto_tfm *tfm, u8 *out)
+static int final(struct hash_desc *desc, u8 *out)
{
+ struct crypto_tfm *tfm = crypto_hash_tfm(desc->tfm);
unsigned long alignmask = crypto_tfm_alg_alignmask(tfm);
struct digest_alg *digest = &tfm->__crt_alg->cra_digest;
memcpy(out, dst, digest->dia_digestsize);
} else
digest->dia_final(tfm, out);
+
+ return 0;
}
-static int nosetkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen)
+static int nosetkey(struct crypto_hash *tfm, const u8 *key, unsigned int keylen)
{
- tfm->crt_flags &= ~CRYPTO_TFM_RES_MASK;
+ crypto_hash_clear_flags(tfm, CRYPTO_TFM_RES_MASK);
return -ENOSYS;
}
-static int setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen)
+static int setkey(struct crypto_hash *hash, const u8 *key, unsigned int keylen)
{
- tfm->crt_flags &= ~CRYPTO_TFM_RES_MASK;
+ struct crypto_tfm *tfm = crypto_hash_tfm(hash);
+
+ crypto_hash_clear_flags(hash, CRYPTO_TFM_RES_MASK);
return tfm->__crt_alg->cra_digest.dia_setkey(tfm, key, keylen);
}
-static void digest(struct crypto_tfm *tfm,
- struct scatterlist *sg, unsigned int nsg, u8 *out)
+static int digest(struct hash_desc *desc,
+ struct scatterlist *sg, unsigned int nbytes, u8 *out)
{
- init(tfm);
- update(tfm, sg, nsg);
- final(tfm, out);
+ init(desc);
+ update(desc, sg, nbytes);
+ return final(desc, out);
}
int crypto_init_digest_flags(struct crypto_tfm *tfm, u32 flags)
int crypto_init_digest_ops(struct crypto_tfm *tfm)
{
- struct digest_tfm *ops = &tfm->crt_digest;
+ struct hash_tfm *ops = &tfm->crt_hash;
struct digest_alg *dalg = &tfm->__crt_alg->cra_digest;
+
+ if (dalg->dia_digestsize > crypto_tfm_alg_blocksize(tfm))
+ return -EINVAL;
- ops->dit_init = init;
- ops->dit_update = update;
- ops->dit_final = final;
- ops->dit_digest = digest;
- ops->dit_setkey = dalg->dia_setkey ? setkey : nosetkey;
+ ops->init = init;
+ ops->update = update;
+ ops->final = final;
+ ops->digest = digest;
+ ops->setkey = dalg->dia_setkey ? setkey : nosetkey;
+ ops->digestsize = dalg->dia_digestsize;
return crypto_alloc_hmac_block(tfm);
}
--- /dev/null
+/*
+ * Cryptographic Hash operations.
+ *
+ * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/seq_file.h>
+
+#include "internal.h"
+
+static unsigned int crypto_hash_ctxsize(struct crypto_alg *alg)
+{
+ return alg->cra_ctxsize;
+}
+
+static int crypto_init_hash_ops(struct crypto_tfm *tfm)
+{
+ struct hash_tfm *crt = &tfm->crt_hash;
+ struct hash_alg *alg = &tfm->__crt_alg->cra_hash;
+
+ if (alg->digestsize > crypto_tfm_alg_blocksize(tfm))
+ return -EINVAL;
+
+ crt->init = alg->init;
+ crt->update = alg->update;
+ crt->final = alg->final;
+ crt->digest = alg->digest;
+ crt->setkey = alg->setkey;
+ crt->digestsize = alg->digestsize;
+
+ return 0;
+}
+
+static void crypto_hash_show(struct seq_file *m, struct crypto_alg *alg)
+ __attribute_used__;
+static void crypto_hash_show(struct seq_file *m, struct crypto_alg *alg)
+{
+ seq_printf(m, "type : hash\n");
+ seq_printf(m, "blocksize : %u\n", alg->cra_blocksize);
+ seq_printf(m, "digestsize : %u\n", alg->cra_hash.digestsize);
+}
+
+const struct crypto_type crypto_hash_type = {
+ .ctxsize = crypto_hash_ctxsize,
+ .init = crypto_init_hash_ops,
+#ifdef CONFIG_PROC_FS
+ .show = crypto_hash_show,
+#endif
+};
+EXPORT_SYMBOL_GPL(crypto_hash_type);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Generic cryptographic hash type");
BUG_ON(!crypto_tfm_alg_blocksize(tfm));
- tfm->crt_digest.dit_hmac_block = kmalloc(crypto_tfm_alg_blocksize(tfm),
- GFP_KERNEL);
- if (tfm->crt_digest.dit_hmac_block == NULL)
+ tfm->crt_hash.hmac_block = kmalloc(crypto_tfm_alg_blocksize(tfm),
+ GFP_KERNEL);
+ if (tfm->crt_hash.hmac_block == NULL)
ret = -ENOMEM;
return ret;
void crypto_free_hmac_block(struct crypto_tfm *tfm)
{
- kfree(tfm->crt_digest.dit_hmac_block);
+ kfree(tfm->crt_hash.hmac_block);
}
void crypto_hmac_init(struct crypto_tfm *tfm, u8 *key, unsigned int *keylen)
{
unsigned int i;
struct scatterlist tmp;
- char *ipad = tfm->crt_digest.dit_hmac_block;
+ char *ipad = tfm->crt_hash.hmac_block;
if (*keylen > crypto_tfm_alg_blocksize(tfm)) {
hash_key(tfm, key, *keylen);
{
unsigned int i;
struct scatterlist tmp;
- char *opad = tfm->crt_digest.dit_hmac_block;
+ char *opad = tfm->crt_hash.hmac_block;
if (*keylen > crypto_tfm_alg_blocksize(tfm)) {
hash_key(tfm, key, *keylen);
#include "internal.h"
-/* Define sg_next is an inline routine now in case we want to change
- scatterlist to a linked list later. */
static inline struct scatterlist *sg_next(struct scatterlist *sg)
{
- return sg + 1;
+ return (++sg)->length ? sg : (void *)sg->page;
}
static inline unsigned long scatterwalk_samebuf(struct scatter_walk *walk_in,
};
extern const struct crypto_type crypto_blkcipher_type;
+extern const struct crypto_type crypto_hash_type;
void crypto_mod_put(struct crypto_alg *alg);
return &crypto_cipher_tfm(tfm)->__crt_alg->cra_cipher;
}
+static inline void *crypto_hash_ctx_aligned(struct crypto_hash *tfm)
+{
+ return crypto_tfm_ctx_aligned(&tfm->base);
+}
+
static inline void blkcipher_walk_init(struct blkcipher_walk *walk,
struct scatterlist *dst,
struct scatterlist *src,
#define CRYPTO_ALG_TYPE_MASK 0x0000000f
#define CRYPTO_ALG_TYPE_CIPHER 0x00000001
#define CRYPTO_ALG_TYPE_DIGEST 0x00000002
-#define CRYPTO_ALG_TYPE_BLKCIPHER 0x00000003
-#define CRYPTO_ALG_TYPE_COMPRESS 0x00000004
+#define CRYPTO_ALG_TYPE_HASH 0x00000003
+#define CRYPTO_ALG_TYPE_BLKCIPHER 0x00000004
+#define CRYPTO_ALG_TYPE_COMPRESS 0x00000005
+
+#define CRYPTO_ALG_TYPE_HASH_MASK 0x0000000e
#define CRYPTO_ALG_LARVAL 0x00000010
#define CRYPTO_ALG_DEAD 0x00000020
struct scatterlist;
struct crypto_blkcipher;
+struct crypto_hash;
struct crypto_tfm;
struct crypto_type;
void *info;
};
+struct hash_desc {
+ struct crypto_hash *tfm;
+ u32 flags;
+};
+
/*
* Algorithms: modular crypto algorithm implementations, managed
* via crypto_register_alg() and crypto_unregister_alg().
unsigned int keylen);
};
+struct hash_alg {
+ int (*init)(struct hash_desc *desc);
+ int (*update)(struct hash_desc *desc, struct scatterlist *sg,
+ unsigned int nbytes);
+ int (*final)(struct hash_desc *desc, u8 *out);
+ int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
+ unsigned int nbytes, u8 *out);
+ int (*setkey)(struct crypto_hash *tfm, const u8 *key,
+ unsigned int keylen);
+
+ unsigned int digestsize;
+};
+
struct compress_alg {
int (*coa_compress)(struct crypto_tfm *tfm, const u8 *src,
unsigned int slen, u8 *dst, unsigned int *dlen);
#define cra_blkcipher cra_u.blkcipher
#define cra_cipher cra_u.cipher
#define cra_digest cra_u.digest
+#define cra_hash cra_u.hash
#define cra_compress cra_u.compress
struct crypto_alg {
struct blkcipher_alg blkcipher;
struct cipher_alg cipher;
struct digest_alg digest;
+ struct hash_alg hash;
struct compress_alg compress;
} cra_u;
void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
};
-struct digest_tfm {
- void (*dit_init)(struct crypto_tfm *tfm);
- void (*dit_update)(struct crypto_tfm *tfm,
- struct scatterlist *sg, unsigned int nsg);
- void (*dit_final)(struct crypto_tfm *tfm, u8 *out);
- void (*dit_digest)(struct crypto_tfm *tfm, struct scatterlist *sg,
- unsigned int nsg, u8 *out);
- int (*dit_setkey)(struct crypto_tfm *tfm,
- const u8 *key, unsigned int keylen);
+struct hash_tfm {
+ int (*init)(struct hash_desc *desc);
+ int (*update)(struct hash_desc *desc,
+ struct scatterlist *sg, unsigned int nsg);
+ int (*final)(struct hash_desc *desc, u8 *out);
+ int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
+ unsigned int nsg, u8 *out);
+ int (*setkey)(struct crypto_hash *tfm, const u8 *key,
+ unsigned int keylen);
#ifdef CONFIG_CRYPTO_HMAC
- void *dit_hmac_block;
+ void *hmac_block;
#endif
+ unsigned int digestsize;
};
struct compress_tfm {
#define crt_blkcipher crt_u.blkcipher
#define crt_cipher crt_u.cipher
-#define crt_digest crt_u.digest
+#define crt_hash crt_u.hash
#define crt_compress crt_u.compress
struct crypto_tfm {
union {
struct blkcipher_tfm blkcipher;
struct cipher_tfm cipher;
- struct digest_tfm digest;
+ struct hash_tfm hash;
struct compress_tfm compress;
} crt_u;
struct crypto_tfm base;
};
+struct crypto_hash {
+ struct crypto_tfm base;
+};
+
enum {
CRYPTOA_UNSPEC,
CRYPTOA_ALG,
dst, src);
}
-static inline void crypto_digest_init(struct crypto_tfm *tfm)
+void crypto_digest_init(struct crypto_tfm *tfm);
+void crypto_digest_update(struct crypto_tfm *tfm,
+ struct scatterlist *sg, unsigned int nsg);
+void crypto_digest_final(struct crypto_tfm *tfm, u8 *out);
+void crypto_digest_digest(struct crypto_tfm *tfm,
+ struct scatterlist *sg, unsigned int nsg, u8 *out);
+
+static inline struct crypto_hash *__crypto_hash_cast(struct crypto_tfm *tfm)
{
- BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);
- tfm->crt_digest.dit_init(tfm);
+ return (struct crypto_hash *)tfm;
}
-static inline void crypto_digest_update(struct crypto_tfm *tfm,
- struct scatterlist *sg,
- unsigned int nsg)
+static inline struct crypto_hash *crypto_hash_cast(struct crypto_tfm *tfm)
{
- BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);
- tfm->crt_digest.dit_update(tfm, sg, nsg);
+ BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_HASH) &
+ CRYPTO_ALG_TYPE_HASH_MASK);
+ return __crypto_hash_cast(tfm);
}
-static inline void crypto_digest_final(struct crypto_tfm *tfm, u8 *out)
+static inline int crypto_digest_setkey(struct crypto_tfm *tfm,
+ const u8 *key, unsigned int keylen)
{
- BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);
- tfm->crt_digest.dit_final(tfm, out);
+ return tfm->crt_hash.setkey(crypto_hash_cast(tfm), key, keylen);
}
-static inline void crypto_digest_digest(struct crypto_tfm *tfm,
- struct scatterlist *sg,
- unsigned int nsg, u8 *out)
+static inline struct crypto_hash *crypto_alloc_hash(const char *alg_name,
+ u32 type, u32 mask)
{
- BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);
- tfm->crt_digest.dit_digest(tfm, sg, nsg, out);
+ type &= ~CRYPTO_ALG_TYPE_MASK;
+ type |= CRYPTO_ALG_TYPE_HASH;
+ mask |= CRYPTO_ALG_TYPE_HASH_MASK;
+
+ return __crypto_hash_cast(crypto_alloc_base(alg_name, type, mask));
}
-static inline int crypto_digest_setkey(struct crypto_tfm *tfm,
- const u8 *key, unsigned int keylen)
+static inline struct crypto_tfm *crypto_hash_tfm(struct crypto_hash *tfm)
{
- BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);
- return tfm->crt_digest.dit_setkey(tfm, key, keylen);
+ return &tfm->base;
+}
+
+static inline void crypto_free_hash(struct crypto_hash *tfm)
+{
+ crypto_free_tfm(crypto_hash_tfm(tfm));
+}
+
+static inline struct hash_tfm *crypto_hash_crt(struct crypto_hash *tfm)
+{
+ return &crypto_hash_tfm(tfm)->crt_hash;
+}
+
+static inline unsigned int crypto_hash_blocksize(struct crypto_hash *tfm)
+{
+ return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm));
+}
+
+static inline unsigned int crypto_hash_alignmask(struct crypto_hash *tfm)
+{
+ return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm));
+}
+
+static inline unsigned int crypto_hash_digestsize(struct crypto_hash *tfm)
+{
+ return crypto_hash_crt(tfm)->digestsize;
+}
+
+static inline u32 crypto_hash_get_flags(struct crypto_hash *tfm)
+{
+ return crypto_tfm_get_flags(crypto_hash_tfm(tfm));
+}
+
+static inline void crypto_hash_set_flags(struct crypto_hash *tfm, u32 flags)
+{
+ crypto_tfm_set_flags(crypto_hash_tfm(tfm), flags);
+}
+
+static inline void crypto_hash_clear_flags(struct crypto_hash *tfm, u32 flags)
+{
+ crypto_tfm_clear_flags(crypto_hash_tfm(tfm), flags);
+}
+
+static inline int crypto_hash_init(struct hash_desc *desc)
+{
+ return crypto_hash_crt(desc->tfm)->init(desc);
+}
+
+static inline int crypto_hash_update(struct hash_desc *desc,
+ struct scatterlist *sg,
+ unsigned int nbytes)
+{
+ return crypto_hash_crt(desc->tfm)->update(desc, sg, nbytes);
+}
+
+static inline int crypto_hash_final(struct hash_desc *desc, u8 *out)
+{
+ return crypto_hash_crt(desc->tfm)->final(desc, out);
+}
+
+static inline int crypto_hash_digest(struct hash_desc *desc,
+ struct scatterlist *sg,
+ unsigned int nbytes, u8 *out)
+{
+ return crypto_hash_crt(desc->tfm)->digest(desc, sg, nbytes, out);
+}
+
+static inline int crypto_hash_setkey(struct crypto_hash *hash,
+ const u8 *key, unsigned int keylen)
+{
+ return crypto_hash_crt(hash)->setkey(hash, key, keylen);
}
static int crypto_cipher_encrypt(struct crypto_tfm *tfm,
projects / linux-2.6 / commitdiff