1 #ifndef PTLRPC_GSS_CRYPTO_H
2 #define PTLRPC_GSS_CRYPTO_H
4 #include <linux/scatterlist.h>
6 #include "gss_internal.h"
8 #include <crypto/skcipher.h>
11 * linux v4.19-rc2-66-gb350bee5ea0f
12 * crypto: skcipher - Introduce crypto_sync_skcipher
14 * crypto_sync_skcipher will replace crypto_blkcipher so start using
15 * crypto_sync_skcipher and provide wrappers for older kernels
17 #ifdef SYNC_SKCIPHER_REQUEST_ON_STACK
19 #define crypto_skcipher_encrypt_iv(desc, dst, src, blocksize) \
20 crypto_skcipher_encrypt((desc))
22 #define crypto_skcipher_decrypt_iv(desc, dst, src, blocksize) \
23 crypto_skcipher_decrypt((desc))
25 #define skcipher_request_set_crypt_iv(d)
27 #else /* ! SYNC_SKCIPHER_REQUEST_ON_STACK */
29 #ifdef HAVE_CRYPTO_ALLOC_SKCIPHER
31 #define crypto_sync_skcipher crypto_skcipher
33 #define SYNC_SKCIPHER_REQUEST_ON_STACK SKCIPHER_REQUEST_ON_STACK
35 #define skcipher_request_set_sync_tfm skcipher_request_set_tfm
37 #define skcipher_request_set_crypt_iv(d)
39 #define crypto_sync_skcipher_blocksize crypto_skcipher_blocksize
41 #define crypto_sync_skcipher_setkey crypto_skcipher_setkey
43 #define crypto_alloc_sync_skcipher crypto_alloc_skcipher
45 #define crypto_free_sync_skcipher crypto_free_skcipher
47 #define crypto_sync_skcipher_ivsize crypto_skcipher_ivsize
49 #define crypto_skcipher_encrypt_iv(desc, dst, src, blocksize) \
50 crypto_skcipher_encrypt((desc))
52 #define crypto_skcipher_decrypt_iv(desc, dst, src, blocksize) \
53 crypto_skcipher_decrypt((desc))
55 #define skcipher_request_zero(req) /* nop */
57 #else /* ! HAVE_CRYPTO_ALLOC_SKCIPHER */
59 #define crypto_sync_skcipher crypto_blkcipher
61 #define SYNC_SKCIPHER_REQUEST_ON_STACK(name, tfm) \
62 struct blkcipher_desc __##name##_obj, *name = (void *)&__##name##_obj
64 #define skcipher_request_set_sync_tfm(d, _tfm) \
65 do { (d)->tfm = _tfm; } while (0)
67 #define skcipher_request_set_callback(d, f, c, data) \
68 do { (d)->flags = f; } while (0)
70 #define skcipher_request_set_crypt(d, src, dst, cryptlen, iv) \
71 do { (d)->info = iv; } while (0)
73 #define skcipher_request_set_crypt_iv(d) \
74 do { (d)->info = crypto_blkcipher_crt((d)->tfm)->iv; } while (0)
76 #define crypto_sync_skcipher_blocksize(tfm) \
77 crypto_blkcipher_blocksize((tfm))
79 #define crypto_sync_skcipher_setkey(tfm, key, keylen) \
80 crypto_blkcipher_setkey((tfm), (key), (keylen))
82 #define crypto_alloc_sync_skcipher(name, type, mask) \
83 crypto_alloc_blkcipher((name), (type), (mask))
85 #define crypto_free_sync_skcipher(tfm) \
86 crypto_free_blkcipher((tfm))
88 #define crypto_sync_skcipher_ivsize(tfm) \
89 crypto_blkcipher_ivsize((tfm))
91 #define crypto_skcipher_encrypt_iv(desc, dst, src, len) \
92 crypto_blkcipher_encrypt_iv((desc), (dst), (src), (len))
94 #define crypto_skcipher_decrypt_iv(desc, dst, src, len) \
95 crypto_blkcipher_decrypt_iv((desc), (dst), (src), (len))
97 #define skcipher_request_zero(req) /* nop */
99 #endif /* HAVE_CRYPTO_ALLOC_SKCIPHER */
100 #endif /* SYNC_SKCIPHER_REQUEST_ON_STACK */
102 struct gss_keyblock {
104 struct crypto_sync_skcipher *kb_tfm;
107 int gss_keyblock_init(struct gss_keyblock *kb, const char *alg_name,
109 void gss_keyblock_free(struct gss_keyblock *kb);
110 int gss_keyblock_dup(struct gss_keyblock *new, struct gss_keyblock *kb);
111 int gss_get_bytes(char **ptr, const char *end, void *res, size_t len);
112 int gss_get_rawobj(char **ptr, const char *end, rawobj_t *res);
113 int gss_get_keyblock(char **ptr, const char *end, struct gss_keyblock *kb,
115 int gss_setup_sgtable(struct sg_table *sgt, struct scatterlist *prealloc_sg,
116 const void *buf, unsigned int buf_len);
117 void gss_teardown_sgtable(struct sg_table *sgt);
118 int gss_crypt_generic(struct crypto_sync_skcipher *tfm, int decrypt,
119 const void *iv, const void *in, void *out, size_t length);
120 int gss_digest_hash(struct ahash_request *req, rawobj_t *hdr,
121 int msgcnt, rawobj_t *msgs, int iovcnt,
122 struct bio_vec *iovs);
123 int gss_digest_hash_compat(struct ahash_request *req,
124 rawobj_t *hdr, int msgcnt, rawobj_t *msgs,
125 int iovcnt, struct bio_vec *iovs);
126 int gss_add_padding(rawobj_t *msg, int msg_buflen, int blocksize);
127 int gss_crypt_rawobjs(struct crypto_sync_skcipher *tfm, __u8 *iv,
128 int inobj_cnt, rawobj_t *inobjs, rawobj_t *outobj,
131 #endif /* PTLRPC_GSS_CRYPTO_H */