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-rw-r--r--include/linux/crypto.h172
1 files changed, 138 insertions, 34 deletions
diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index 0be666b50463..40c0aab8ad4c 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -31,8 +31,11 @@
#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
@@ -90,6 +93,7 @@
struct scatterlist;
struct crypto_blkcipher;
+struct crypto_hash;
struct crypto_tfm;
struct crypto_type;
@@ -107,6 +111,11 @@ struct cipher_desc {
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().
@@ -158,6 +167,19 @@ struct digest_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);
@@ -168,6 +190,7 @@ struct compress_alg {
#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 {
@@ -191,6 +214,7 @@ 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;
@@ -262,18 +286,19 @@ struct cipher_tfm {
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 {
@@ -287,7 +312,7 @@ 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 {
@@ -297,7 +322,7 @@ 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;
@@ -312,6 +337,10 @@ struct crypto_blkcipher {
struct crypto_tfm base;
};
+struct crypto_hash {
+ struct crypto_tfm base;
+};
+
enum {
CRYPTOA_UNSPEC,
CRYPTOA_ALG,
@@ -647,39 +676,114 @@ static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm,
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,