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https://github.com/Fishwaldo/linux-bl808.git
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[CRYPTO] hash: Add asynchronous hash support
This patch adds asynchronous hash and digest support. Signed-off-by: Loc Ho <lho@amcc.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Loc Ho
Herbert Xu
parent
534fe2c1c3
commit
004a403c2e
8 changed files with 507 additions and 15 deletions
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@ -30,15 +30,17 @@
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*/
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#define CRYPTO_ALG_TYPE_MASK 0x0000000f
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#define CRYPTO_ALG_TYPE_CIPHER 0x00000001
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#define CRYPTO_ALG_TYPE_DIGEST 0x00000002
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#define CRYPTO_ALG_TYPE_HASH 0x00000003
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#define CRYPTO_ALG_TYPE_COMPRESS 0x00000002
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#define CRYPTO_ALG_TYPE_AEAD 0x00000003
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#define CRYPTO_ALG_TYPE_BLKCIPHER 0x00000004
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#define CRYPTO_ALG_TYPE_ABLKCIPHER 0x00000005
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#define CRYPTO_ALG_TYPE_GIVCIPHER 0x00000006
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#define CRYPTO_ALG_TYPE_COMPRESS 0x00000008
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#define CRYPTO_ALG_TYPE_AEAD 0x00000009
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#define CRYPTO_ALG_TYPE_DIGEST 0x00000008
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#define CRYPTO_ALG_TYPE_HASH 0x00000009
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#define CRYPTO_ALG_TYPE_AHASH 0x0000000a
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#define CRYPTO_ALG_TYPE_HASH_MASK 0x0000000e
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#define CRYPTO_ALG_TYPE_AHASH_MASK 0x0000000c
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#define CRYPTO_ALG_TYPE_BLKCIPHER_MASK 0x0000000c
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#define CRYPTO_ALG_LARVAL 0x00000010
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@ -102,6 +104,7 @@ struct crypto_async_request;
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struct crypto_aead;
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struct crypto_blkcipher;
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struct crypto_hash;
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struct crypto_ahash;
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struct crypto_tfm;
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struct crypto_type;
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struct aead_givcrypt_request;
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@ -131,6 +134,18 @@ struct ablkcipher_request {
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void *__ctx[] CRYPTO_MINALIGN_ATTR;
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};
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struct ahash_request {
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struct crypto_async_request base;
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void *info;
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unsigned int nbytes;
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struct scatterlist *src;
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u8 *result;
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void *__ctx[] CRYPTO_MINALIGN_ATTR;
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};
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/**
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* struct aead_request - AEAD request
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* @base: Common attributes for async crypto requests
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@ -195,6 +210,17 @@ struct ablkcipher_alg {
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unsigned int ivsize;
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};
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struct ahash_alg {
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int (*init)(struct ahash_request *req);
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int (*update)(struct ahash_request *req);
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int (*final)(struct ahash_request *req);
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int (*digest)(struct ahash_request *req);
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int (*setkey)(struct crypto_ahash *tfm, const u8 *key,
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unsigned int keylen);
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unsigned int digestsize;
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};
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struct aead_alg {
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int (*setkey)(struct crypto_aead *tfm, const u8 *key,
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unsigned int keylen);
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@ -272,6 +298,7 @@ struct compress_alg {
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#define cra_cipher cra_u.cipher
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#define cra_digest cra_u.digest
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#define cra_hash cra_u.hash
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#define cra_ahash cra_u.ahash
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#define cra_compress cra_u.compress
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struct crypto_alg {
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@ -298,6 +325,7 @@ struct crypto_alg {
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struct cipher_alg cipher;
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struct digest_alg digest;
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struct hash_alg hash;
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struct ahash_alg ahash;
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struct compress_alg compress;
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} cra_u;
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@ -383,6 +411,19 @@ struct hash_tfm {
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unsigned int digestsize;
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};
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struct ahash_tfm {
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int (*init)(struct ahash_request *req);
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int (*update)(struct ahash_request *req);
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int (*final)(struct ahash_request *req);
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int (*digest)(struct ahash_request *req);
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int (*setkey)(struct crypto_ahash *tfm, const u8 *key,
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unsigned int keylen);
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unsigned int digestsize;
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struct crypto_ahash *base;
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unsigned int reqsize;
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};
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struct compress_tfm {
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int (*cot_compress)(struct crypto_tfm *tfm,
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const u8 *src, unsigned int slen,
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@ -397,6 +438,7 @@ struct compress_tfm {
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#define crt_blkcipher crt_u.blkcipher
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#define crt_cipher crt_u.cipher
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#define crt_hash crt_u.hash
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#define crt_ahash crt_u.ahash
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#define crt_compress crt_u.compress
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struct crypto_tfm {
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@ -409,6 +451,7 @@ struct crypto_tfm {
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struct blkcipher_tfm blkcipher;
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struct cipher_tfm cipher;
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struct hash_tfm hash;
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struct ahash_tfm ahash;
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struct compress_tfm compress;
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} crt_u;
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@ -441,6 +484,10 @@ struct crypto_hash {
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struct crypto_tfm base;
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};
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struct crypto_ahash {
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struct crypto_tfm base;
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};
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enum {
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CRYPTOA_UNSPEC,
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CRYPTOA_ALG,
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@ -1264,5 +1311,137 @@ static inline int crypto_comp_decompress(struct crypto_comp *tfm,
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src, slen, dst, dlen);
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}
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static inline struct crypto_ahash *__crypto_ahash_cast(struct crypto_tfm *tfm)
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{
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return (struct crypto_ahash *)tfm;
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}
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static inline struct crypto_ahash *crypto_alloc_ahash(const char *alg_name,
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u32 type, u32 mask)
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{
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type &= ~CRYPTO_ALG_TYPE_MASK;
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mask &= ~CRYPTO_ALG_TYPE_MASK;
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type |= CRYPTO_ALG_TYPE_AHASH;
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mask |= CRYPTO_ALG_TYPE_AHASH_MASK;
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return __crypto_ahash_cast(crypto_alloc_base(alg_name, type, mask));
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}
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static inline struct crypto_tfm *crypto_ahash_tfm(struct crypto_ahash *tfm)
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{
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return &tfm->base;
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}
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static inline void crypto_free_ahash(struct crypto_ahash *tfm)
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{
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crypto_free_tfm(crypto_ahash_tfm(tfm));
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}
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static inline unsigned int crypto_ahash_alignmask(
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struct crypto_ahash *tfm)
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{
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return crypto_tfm_alg_alignmask(crypto_ahash_tfm(tfm));
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}
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static inline struct ahash_tfm *crypto_ahash_crt(struct crypto_ahash *tfm)
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{
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return &crypto_ahash_tfm(tfm)->crt_ahash;
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}
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static inline unsigned int crypto_ahash_digestsize(struct crypto_ahash *tfm)
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{
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return crypto_ahash_crt(tfm)->digestsize;
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}
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static inline u32 crypto_ahash_get_flags(struct crypto_ahash *tfm)
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{
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return crypto_tfm_get_flags(crypto_ahash_tfm(tfm));
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}
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static inline void crypto_ahash_set_flags(struct crypto_ahash *tfm, u32 flags)
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{
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crypto_tfm_set_flags(crypto_ahash_tfm(tfm), flags);
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}
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static inline void crypto_ahash_clear_flags(struct crypto_ahash *tfm, u32 flags)
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{
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crypto_tfm_clear_flags(crypto_ahash_tfm(tfm), flags);
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}
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static inline struct crypto_ahash *crypto_ahash_reqtfm(
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struct ahash_request *req)
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{
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return __crypto_ahash_cast(req->base.tfm);
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}
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static inline unsigned int crypto_ahash_reqsize(struct crypto_ahash *tfm)
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{
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return crypto_ahash_crt(tfm)->reqsize;
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}
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static inline int crypto_ahash_setkey(struct crypto_ahash *tfm,
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const u8 *key, unsigned int keylen)
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{
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struct ahash_tfm *crt = crypto_ahash_crt(tfm);
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return crt->setkey(crt->base, key, keylen);
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}
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static inline int crypto_ahash_digest(struct ahash_request *req)
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{
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struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req));
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return crt->digest(req);
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}
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static inline void ahash_request_set_tfm(struct ahash_request *req,
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struct crypto_ahash *tfm)
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{
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req->base.tfm = crypto_ahash_tfm(crypto_ahash_crt(tfm)->base);
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}
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static inline struct ahash_request *ahash_request_alloc(
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struct crypto_ahash *tfm, gfp_t gfp)
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{
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struct ahash_request *req;
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req = kmalloc(sizeof(struct ahash_request) +
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crypto_ahash_reqsize(tfm), gfp);
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if (likely(req))
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ahash_request_set_tfm(req, tfm);
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return req;
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}
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static inline void ahash_request_free(struct ahash_request *req)
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{
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kfree(req);
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}
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static inline struct ahash_request *ahash_request_cast(
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struct crypto_async_request *req)
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{
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return container_of(req, struct ahash_request, base);
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}
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static inline void ahash_request_set_callback(struct ahash_request *req,
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u32 flags,
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crypto_completion_t complete,
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void *data)
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{
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req->base.complete = complete;
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req->base.data = data;
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req->base.flags = flags;
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}
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static inline void ahash_request_set_crypt(struct ahash_request *req,
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struct scatterlist *src, u8 *result,
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unsigned int nbytes)
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{
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req->src = src;
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req->nbytes = nbytes;
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req->result = result;
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}
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#endif /* _LINUX_CRYPTO_H */
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