^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Cryptographic API.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * HMAC: Keyed-Hashing for Message Authentication (RFC2104).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * The HMAC implementation is derived from USAGI.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * Copyright (c) 2002 Kazunori Miyazawa <miyazawa@linux-ipv6.org> / USAGI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <crypto/hmac.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <crypto/internal/hash.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <crypto/scatterwalk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/scatterlist.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) struct hmac_ctx {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) struct crypto_shash *hash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) static inline void *align_ptr(void *p, unsigned int align)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) return (void *)ALIGN((unsigned long)p, align);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static inline struct hmac_ctx *hmac_ctx(struct crypto_shash *tfm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) return align_ptr(crypto_shash_ctx_aligned(tfm) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) crypto_shash_statesize(tfm) * 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) crypto_tfm_ctx_alignment());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) static int hmac_setkey(struct crypto_shash *parent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) const u8 *inkey, unsigned int keylen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) int bs = crypto_shash_blocksize(parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) int ds = crypto_shash_digestsize(parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) int ss = crypto_shash_statesize(parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) char *ipad = crypto_shash_ctx_aligned(parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) char *opad = ipad + ss;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) struct hmac_ctx *ctx = align_ptr(opad + ss,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) crypto_tfm_ctx_alignment());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) struct crypto_shash *hash = ctx->hash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) SHASH_DESC_ON_STACK(shash, hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) shash->tfm = hash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) if (keylen > bs) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) err = crypto_shash_digest(shash, inkey, keylen, ipad);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) keylen = ds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) memcpy(ipad, inkey, keylen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) memset(ipad + keylen, 0, bs - keylen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) memcpy(opad, ipad, bs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) for (i = 0; i < bs; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) ipad[i] ^= HMAC_IPAD_VALUE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) opad[i] ^= HMAC_OPAD_VALUE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return crypto_shash_init(shash) ?:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) crypto_shash_update(shash, ipad, bs) ?:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) crypto_shash_export(shash, ipad) ?:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) crypto_shash_init(shash) ?:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) crypto_shash_update(shash, opad, bs) ?:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) crypto_shash_export(shash, opad);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) static int hmac_export(struct shash_desc *pdesc, void *out)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) struct shash_desc *desc = shash_desc_ctx(pdesc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return crypto_shash_export(desc, out);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) static int hmac_import(struct shash_desc *pdesc, const void *in)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) struct shash_desc *desc = shash_desc_ctx(pdesc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) struct hmac_ctx *ctx = hmac_ctx(pdesc->tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) desc->tfm = ctx->hash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) return crypto_shash_import(desc, in);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) static int hmac_init(struct shash_desc *pdesc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) return hmac_import(pdesc, crypto_shash_ctx_aligned(pdesc->tfm));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) static int hmac_update(struct shash_desc *pdesc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) const u8 *data, unsigned int nbytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) struct shash_desc *desc = shash_desc_ctx(pdesc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) return crypto_shash_update(desc, data, nbytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) static int hmac_final(struct shash_desc *pdesc, u8 *out)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) struct crypto_shash *parent = pdesc->tfm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) int ds = crypto_shash_digestsize(parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) int ss = crypto_shash_statesize(parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) char *opad = crypto_shash_ctx_aligned(parent) + ss;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) struct shash_desc *desc = shash_desc_ctx(pdesc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) return crypto_shash_final(desc, out) ?:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) crypto_shash_import(desc, opad) ?:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) crypto_shash_finup(desc, out, ds, out);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) static int hmac_finup(struct shash_desc *pdesc, const u8 *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) unsigned int nbytes, u8 *out)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) struct crypto_shash *parent = pdesc->tfm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) int ds = crypto_shash_digestsize(parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) int ss = crypto_shash_statesize(parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) char *opad = crypto_shash_ctx_aligned(parent) + ss;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) struct shash_desc *desc = shash_desc_ctx(pdesc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) return crypto_shash_finup(desc, data, nbytes, out) ?:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) crypto_shash_import(desc, opad) ?:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) crypto_shash_finup(desc, out, ds, out);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) static int hmac_init_tfm(struct crypto_shash *parent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) struct crypto_shash *hash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) struct shash_instance *inst = shash_alg_instance(parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) struct crypto_shash_spawn *spawn = shash_instance_ctx(inst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) struct hmac_ctx *ctx = hmac_ctx(parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) hash = crypto_spawn_shash(spawn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) if (IS_ERR(hash))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) return PTR_ERR(hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) parent->descsize = sizeof(struct shash_desc) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) crypto_shash_descsize(hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) ctx->hash = hash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) static void hmac_exit_tfm(struct crypto_shash *parent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) struct hmac_ctx *ctx = hmac_ctx(parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) crypto_free_shash(ctx->hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) static int hmac_create(struct crypto_template *tmpl, struct rtattr **tb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) struct shash_instance *inst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) struct crypto_shash_spawn *spawn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) struct crypto_alg *alg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) struct shash_alg *salg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) u32 mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) int ds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) int ss;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_SHASH, &mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) inst = kzalloc(sizeof(*inst) + sizeof(*spawn), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) if (!inst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) spawn = shash_instance_ctx(inst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) err = crypto_grab_shash(spawn, shash_crypto_instance(inst),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) crypto_attr_alg_name(tb[1]), 0, mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) goto err_free_inst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) salg = crypto_spawn_shash_alg(spawn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) alg = &salg->base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) /* The underlying hash algorithm must not require a key */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) if (crypto_shash_alg_needs_key(salg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) goto err_free_inst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) ds = salg->digestsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) ss = salg->statesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) if (ds > alg->cra_blocksize ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) ss < alg->cra_blocksize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) goto err_free_inst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) err = crypto_inst_setname(shash_crypto_instance(inst), tmpl->name, alg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) goto err_free_inst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) inst->alg.base.cra_priority = alg->cra_priority;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) inst->alg.base.cra_blocksize = alg->cra_blocksize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) inst->alg.base.cra_alignmask = alg->cra_alignmask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) ss = ALIGN(ss, alg->cra_alignmask + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) inst->alg.digestsize = ds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) inst->alg.statesize = ss;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) inst->alg.base.cra_ctxsize = sizeof(struct hmac_ctx) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) ALIGN(ss * 2, crypto_tfm_ctx_alignment());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) inst->alg.init = hmac_init;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) inst->alg.update = hmac_update;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) inst->alg.final = hmac_final;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) inst->alg.finup = hmac_finup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) inst->alg.export = hmac_export;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) inst->alg.import = hmac_import;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) inst->alg.setkey = hmac_setkey;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) inst->alg.init_tfm = hmac_init_tfm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) inst->alg.exit_tfm = hmac_exit_tfm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) inst->free = shash_free_singlespawn_instance;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) err = shash_register_instance(tmpl, inst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) err_free_inst:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) shash_free_singlespawn_instance(inst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) static struct crypto_template hmac_tmpl = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) .name = "hmac",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) .create = hmac_create,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) .module = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) static int __init hmac_module_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) return crypto_register_template(&hmac_tmpl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) static void __exit hmac_module_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) crypto_unregister_template(&hmac_tmpl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) subsys_initcall(hmac_module_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) module_exit(hmac_module_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) MODULE_DESCRIPTION("HMAC hash algorithm");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) MODULE_ALIAS_CRYPTO("hmac");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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