crypto: hash - Remove crypto_hash interface
This patch removes all traces of the crypto_hash interface, now that everyone has switched over to shash or ahash. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu
Родитель
6dae10001e
Коммит
8965450987
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@ -1761,19 +1761,6 @@ read(opfd, out, outlen);
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!Finclude/linux/crypto.h crypto_cipher_setkey
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!Finclude/linux/crypto.h crypto_cipher_encrypt_one
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!Finclude/linux/crypto.h crypto_cipher_decrypt_one
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</sect1>
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<sect1><title>Synchronous Message Digest API</title>
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!Pinclude/linux/crypto.h Synchronous Message Digest API
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!Finclude/linux/crypto.h crypto_alloc_hash
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!Finclude/linux/crypto.h crypto_free_hash
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!Finclude/linux/crypto.h crypto_has_hash
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!Finclude/linux/crypto.h crypto_hash_blocksize
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!Finclude/linux/crypto.h crypto_hash_digestsize
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!Finclude/linux/crypto.h crypto_hash_init
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!Finclude/linux/crypto.h crypto_hash_update
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!Finclude/linux/crypto.h crypto_hash_final
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!Finclude/linux/crypto.h crypto_hash_digest
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!Finclude/linux/crypto.h crypto_hash_setkey
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</sect1>
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<sect1><title>Message Digest Algorithm Definitions</title>
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!Pinclude/crypto/hash.h Message Digest Algorithm Definitions
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@ -166,24 +166,6 @@ int crypto_ahash_walk_first(struct ahash_request *req,
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}
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EXPORT_SYMBOL_GPL(crypto_ahash_walk_first);
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int crypto_hash_walk_first_compat(struct hash_desc *hdesc,
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struct crypto_hash_walk *walk,
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struct scatterlist *sg, unsigned int len)
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{
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walk->total = len;
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if (!walk->total) {
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walk->entrylen = 0;
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return 0;
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}
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walk->alignmask = crypto_hash_alignmask(hdesc->tfm);
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walk->sg = sg;
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walk->flags = hdesc->flags & CRYPTO_TFM_REQ_MASK;
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return hash_walk_new_entry(walk);
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}
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static int ahash_setkey_unaligned(struct crypto_ahash *tfm, const u8 *key,
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unsigned int keylen)
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{
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147
crypto/shash.c
147
crypto/shash.c
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@ -369,151 +369,6 @@ int crypto_init_shash_ops_async(struct crypto_tfm *tfm)
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return 0;
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}
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static int shash_compat_setkey(struct crypto_hash *tfm, const u8 *key,
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unsigned int keylen)
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{
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struct shash_desc **descp = crypto_hash_ctx(tfm);
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struct shash_desc *desc = *descp;
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return crypto_shash_setkey(desc->tfm, key, keylen);
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}
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static int shash_compat_init(struct hash_desc *hdesc)
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{
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struct shash_desc **descp = crypto_hash_ctx(hdesc->tfm);
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struct shash_desc *desc = *descp;
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desc->flags = hdesc->flags;
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return crypto_shash_init(desc);
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}
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static int shash_compat_update(struct hash_desc *hdesc, struct scatterlist *sg,
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unsigned int len)
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{
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struct shash_desc **descp = crypto_hash_ctx(hdesc->tfm);
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struct shash_desc *desc = *descp;
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struct crypto_hash_walk walk;
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int nbytes;
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for (nbytes = crypto_hash_walk_first_compat(hdesc, &walk, sg, len);
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nbytes > 0; nbytes = crypto_hash_walk_done(&walk, nbytes))
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nbytes = crypto_shash_update(desc, walk.data, nbytes);
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return nbytes;
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}
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static int shash_compat_final(struct hash_desc *hdesc, u8 *out)
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{
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struct shash_desc **descp = crypto_hash_ctx(hdesc->tfm);
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return crypto_shash_final(*descp, out);
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}
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static int shash_compat_digest(struct hash_desc *hdesc, struct scatterlist *sg,
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unsigned int nbytes, u8 *out)
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{
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unsigned int offset = sg->offset;
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int err;
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if (nbytes < min(sg->length, ((unsigned int)(PAGE_SIZE)) - offset)) {
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struct shash_desc **descp = crypto_hash_ctx(hdesc->tfm);
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struct shash_desc *desc = *descp;
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void *data;
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desc->flags = hdesc->flags;
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data = kmap_atomic(sg_page(sg));
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err = crypto_shash_digest(desc, data + offset, nbytes, out);
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kunmap_atomic(data);
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crypto_yield(desc->flags);
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goto out;
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}
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err = shash_compat_init(hdesc);
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if (err)
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goto out;
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err = shash_compat_update(hdesc, sg, nbytes);
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if (err)
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goto out;
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err = shash_compat_final(hdesc, out);
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out:
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return err;
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}
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static void crypto_exit_shash_ops_compat(struct crypto_tfm *tfm)
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{
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struct shash_desc **descp = crypto_tfm_ctx(tfm);
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struct shash_desc *desc = *descp;
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crypto_free_shash(desc->tfm);
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kzfree(desc);
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}
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static int crypto_init_shash_ops_compat(struct crypto_tfm *tfm)
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{
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struct hash_tfm *crt = &tfm->crt_hash;
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struct crypto_alg *calg = tfm->__crt_alg;
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struct shash_alg *alg = __crypto_shash_alg(calg);
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struct shash_desc **descp = crypto_tfm_ctx(tfm);
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struct crypto_shash *shash;
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struct shash_desc *desc;
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if (!crypto_mod_get(calg))
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return -EAGAIN;
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shash = crypto_create_tfm(calg, &crypto_shash_type);
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if (IS_ERR(shash)) {
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crypto_mod_put(calg);
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return PTR_ERR(shash);
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}
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desc = kmalloc(sizeof(*desc) + crypto_shash_descsize(shash),
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GFP_KERNEL);
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if (!desc) {
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crypto_free_shash(shash);
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return -ENOMEM;
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}
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*descp = desc;
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desc->tfm = shash;
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tfm->exit = crypto_exit_shash_ops_compat;
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crt->init = shash_compat_init;
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crt->update = shash_compat_update;
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crt->final = shash_compat_final;
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crt->digest = shash_compat_digest;
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crt->setkey = shash_compat_setkey;
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crt->digestsize = alg->digestsize;
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return 0;
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}
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static int crypto_init_shash_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
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{
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switch (mask & CRYPTO_ALG_TYPE_MASK) {
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case CRYPTO_ALG_TYPE_HASH_MASK:
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return crypto_init_shash_ops_compat(tfm);
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}
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return -EINVAL;
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}
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static unsigned int crypto_shash_ctxsize(struct crypto_alg *alg, u32 type,
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u32 mask)
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{
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switch (mask & CRYPTO_ALG_TYPE_MASK) {
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case CRYPTO_ALG_TYPE_HASH_MASK:
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return sizeof(struct shash_desc *);
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}
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return 0;
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}
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static int crypto_shash_init_tfm(struct crypto_tfm *tfm)
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{
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struct crypto_shash *hash = __crypto_shash_cast(tfm);
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@ -560,9 +415,7 @@ static void crypto_shash_show(struct seq_file *m, struct crypto_alg *alg)
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}
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static const struct crypto_type crypto_shash_type = {
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.ctxsize = crypto_shash_ctxsize,
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.extsize = crypto_alg_extsize,
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.init = crypto_init_shash_ops,
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.init_tfm = crypto_shash_init_tfm,
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#ifdef CONFIG_PROC_FS
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.show = crypto_shash_show,
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@ -349,24 +349,6 @@ static inline struct cipher_alg *crypto_cipher_alg(struct crypto_cipher *tfm)
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return &crypto_cipher_tfm(tfm)->__crt_alg->cra_cipher;
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}
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static inline struct crypto_hash *crypto_spawn_hash(struct crypto_spawn *spawn)
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{
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u32 type = CRYPTO_ALG_TYPE_HASH;
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u32 mask = CRYPTO_ALG_TYPE_HASH_MASK;
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return __crypto_hash_cast(crypto_spawn_tfm(spawn, type, mask));
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}
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static inline void *crypto_hash_ctx(struct crypto_hash *tfm)
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{
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return crypto_tfm_ctx(&tfm->base);
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}
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static inline void *crypto_hash_ctx_aligned(struct crypto_hash *tfm)
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{
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return crypto_tfm_ctx_aligned(&tfm->base);
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}
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static inline void blkcipher_walk_init(struct blkcipher_walk *walk,
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struct scatterlist *dst,
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struct scatterlist *src,
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@ -57,9 +57,6 @@ int crypto_hash_walk_first(struct ahash_request *req,
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struct crypto_hash_walk *walk);
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int crypto_ahash_walk_first(struct ahash_request *req,
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struct crypto_hash_walk *walk);
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int crypto_hash_walk_first_compat(struct hash_desc *hdesc,
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struct crypto_hash_walk *walk,
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struct scatterlist *sg, unsigned int len);
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static inline int crypto_ahash_walk_done(struct crypto_hash_walk *walk,
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int err)
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@ -136,7 +136,6 @@ struct scatterlist;
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struct crypto_ablkcipher;
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struct crypto_async_request;
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struct crypto_blkcipher;
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struct crypto_hash;
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struct crypto_tfm;
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struct crypto_type;
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struct skcipher_givcrypt_request;
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@ -186,11 +185,6 @@ struct cipher_desc {
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void *info;
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};
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struct hash_desc {
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struct crypto_hash *tfm;
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u32 flags;
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};
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/**
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* DOC: Block Cipher Algorithm Definitions
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*
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@ -518,18 +512,6 @@ struct cipher_tfm {
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void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
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};
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struct hash_tfm {
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int (*init)(struct hash_desc *desc);
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int (*update)(struct hash_desc *desc,
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struct scatterlist *sg, unsigned int nsg);
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int (*final)(struct hash_desc *desc, u8 *out);
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int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
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unsigned int nsg, u8 *out);
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int (*setkey)(struct crypto_hash *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 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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@ -542,7 +524,6 @@ struct compress_tfm {
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#define crt_ablkcipher crt_u.ablkcipher
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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_compress crt_u.compress
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struct crypto_tfm {
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@ -553,7 +534,6 @@ struct crypto_tfm {
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struct ablkcipher_tfm ablkcipher;
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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 compress_tfm compress;
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} crt_u;
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@ -580,10 +560,6 @@ struct crypto_comp {
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struct crypto_tfm base;
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};
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struct crypto_hash {
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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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@ -1576,233 +1552,6 @@ static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm,
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dst, src);
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}
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/**
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* DOC: Synchronous Message Digest API
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*
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* The synchronous message digest API is used with the ciphers of type
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* CRYPTO_ALG_TYPE_HASH (listed as type "hash" in /proc/crypto)
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*/
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static inline struct crypto_hash *__crypto_hash_cast(struct crypto_tfm *tfm)
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{
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return (struct crypto_hash *)tfm;
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}
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static inline struct crypto_hash *crypto_hash_cast(struct crypto_tfm *tfm)
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{
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BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_HASH) &
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CRYPTO_ALG_TYPE_HASH_MASK);
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return __crypto_hash_cast(tfm);
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}
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/**
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* crypto_alloc_hash() - allocate synchronous message digest handle
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* @alg_name: is the cra_name / name or cra_driver_name / driver name of the
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* message digest cipher
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* @type: specifies the type of the cipher
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* @mask: specifies the mask for the cipher
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*
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* Allocate a cipher handle for a message digest. The returned struct
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* crypto_hash is the cipher handle that is required for any subsequent
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* API invocation for that message digest.
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*
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* Return: allocated cipher handle in case of success; IS_ERR() is true in case
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* of an error, PTR_ERR() returns the error code.
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*/
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static inline struct crypto_hash *crypto_alloc_hash(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_HASH;
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mask |= CRYPTO_ALG_TYPE_HASH_MASK;
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return __crypto_hash_cast(crypto_alloc_base(alg_name, type, mask));
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}
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static inline struct crypto_tfm *crypto_hash_tfm(struct crypto_hash *tfm)
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{
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return &tfm->base;
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}
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/**
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* crypto_free_hash() - zeroize and free message digest handle
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* @tfm: cipher handle to be freed
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*/
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static inline void crypto_free_hash(struct crypto_hash *tfm)
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{
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crypto_free_tfm(crypto_hash_tfm(tfm));
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}
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/**
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* crypto_has_hash() - Search for the availability of a message digest
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* @alg_name: is the cra_name / name or cra_driver_name / driver name of the
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* message digest cipher
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* @type: specifies the type of the cipher
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* @mask: specifies the mask for the cipher
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*
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* Return: true when the message digest cipher is known to the kernel crypto
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* API; false otherwise
|
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*/
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static inline int crypto_has_hash(const char *alg_name, 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_HASH;
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mask |= CRYPTO_ALG_TYPE_HASH_MASK;
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return crypto_has_alg(alg_name, type, mask);
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}
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static inline struct hash_tfm *crypto_hash_crt(struct crypto_hash *tfm)
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{
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return &crypto_hash_tfm(tfm)->crt_hash;
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}
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|
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/**
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* crypto_hash_blocksize() - obtain block size for message digest
|
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* @tfm: cipher handle
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*
|
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* The block size for the message digest cipher referenced with the cipher
|
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* handle is returned.
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*
|
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* Return: block size of cipher
|
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*/
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static inline unsigned int crypto_hash_blocksize(struct crypto_hash *tfm)
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{
|
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return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm));
|
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}
|
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|
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static inline unsigned int crypto_hash_alignmask(struct crypto_hash *tfm)
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{
|
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return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm));
|
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}
|
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|
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/**
|
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* crypto_hash_digestsize() - obtain message digest size
|
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* @tfm: cipher handle
|
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*
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* The size for the message digest created by the message digest cipher
|
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* referenced with the cipher handle is returned.
|
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*
|
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* Return: message digest size
|
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*/
|
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static inline unsigned int crypto_hash_digestsize(struct crypto_hash *tfm)
|
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{
|
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return crypto_hash_crt(tfm)->digestsize;
|
||||
}
|
||||
|
||||
static inline u32 crypto_hash_get_flags(struct crypto_hash *tfm)
|
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{
|
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return crypto_tfm_get_flags(crypto_hash_tfm(tfm));
|
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}
|
||||
|
||||
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);
|
||||
}
|
||||
|
||||
/**
|
||||
* crypto_hash_init() - (re)initialize message digest handle
|
||||
* @desc: cipher request handle that to be filled by caller --
|
||||
* desc.tfm is filled with the hash cipher handle;
|
||||
* desc.flags is filled with either CRYPTO_TFM_REQ_MAY_SLEEP or 0.
|
||||
*
|
||||
* The call (re-)initializes the message digest referenced by the hash cipher
|
||||
* request handle. Any potentially existing state created by previous
|
||||
* operations is discarded.
|
||||
*
|
||||
* Return: 0 if the message digest initialization was successful; < 0 if an
|
||||
* error occurred
|
||||
*/
|
||||
static inline int crypto_hash_init(struct hash_desc *desc)
|
||||
{
|
||||
return crypto_hash_crt(desc->tfm)->init(desc);
|
||||
}
|
||||
|
||||
/**
|
||||
* crypto_hash_update() - add data to message digest for processing
|
||||
* @desc: cipher request handle
|
||||
* @sg: scatter / gather list pointing to the data to be added to the message
|
||||
* digest
|
||||
* @nbytes: number of bytes to be processed from @sg
|
||||
*
|
||||
* Updates the message digest state of the cipher handle pointed to by the
|
||||
* hash cipher request handle with the input data pointed to by the
|
||||
* scatter/gather list.
|
||||
*
|
||||
* Return: 0 if the message digest update was successful; < 0 if an error
|
||||
* occurred
|
||||
*/
|
||||
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);
|
||||
}
|
||||
|
||||
/**
|
||||
* crypto_hash_final() - calculate message digest
|
||||
* @desc: cipher request handle
|
||||
* @out: message digest output buffer -- The caller must ensure that the out
|
||||
* buffer has a sufficient size (e.g. by using the crypto_hash_digestsize
|
||||
* function).
|
||||
*
|
||||
* Finalize the message digest operation and create the message digest
|
||||
* based on all data added to the cipher handle. The message digest is placed
|
||||
* into the output buffer.
|
||||
*
|
||||
* Return: 0 if the message digest creation was successful; < 0 if an error
|
||||
* occurred
|
||||
*/
|
||||
static inline int crypto_hash_final(struct hash_desc *desc, u8 *out)
|
||||
{
|
||||
return crypto_hash_crt(desc->tfm)->final(desc, out);
|
||||
}
|
||||
|
||||
/**
|
||||
* crypto_hash_digest() - calculate message digest for a buffer
|
||||
* @desc: see crypto_hash_final()
|
||||
* @sg: see crypto_hash_update()
|
||||
* @nbytes: see crypto_hash_update()
|
||||
* @out: see crypto_hash_final()
|
||||
*
|
||||
* This function is a "short-hand" for the function calls of crypto_hash_init,
|
||||
* crypto_hash_update and crypto_hash_final. The parameters have the same
|
||||
* meaning as discussed for those separate three functions.
|
||||
*
|
||||
* Return: 0 if the message digest creation was successful; < 0 if an error
|
||||
* occurred
|
||||
*/
|
||||
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);
|
||||
}
|
||||
|
||||
/**
|
||||
* crypto_hash_setkey() - set key for message digest
|
||||
* @hash: cipher handle
|
||||
* @key: buffer holding the key
|
||||
* @keylen: length of the key in bytes
|
||||
*
|
||||
* The caller provided key is set for the message digest cipher. The cipher
|
||||
* handle must point to a keyed hash in order for this function to succeed.
|
||||
*
|
||||
* Return: 0 if the setting of the key was successful; < 0 if an error occurred
|
||||
*/
|
||||
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 inline struct crypto_comp *__crypto_comp_cast(struct crypto_tfm *tfm)
|
||||
{
|
||||
return (struct crypto_comp *)tfm;
|
||||
|
|
|
|||
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