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crypto: sun8i-ss - support hash algorithms
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The SS support multiples hash algorithms, this patch adds support for
MD5, SHA1, SHA224 and SHA256.

Signed-off-by: Corentin Labbe <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>
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@montjoie @herbertx
montjoie authored and herbertx committed Sep 25, 2020
1 parent ac2614d commit d9b4541
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9 changes: 9 additions & 0 deletions drivers/crypto/allwinner/Kconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -93,3 +93,12 @@ config CRYPTO_DEV_SUN8I_SS_PRNG
help
Select this option if you want to provide kernel-side support for
the Pseudo-Random Number Generator found in the Security System.

config CRYPTO_DEV_SUN8I_SS_HASH
bool "Enable support for hash on sun8i-ss"
depends on CRYPTO_DEV_SUN8I_SS
select MD5
select SHA1
select SHA256
help
Say y to enable support for hash algorithms.
1 change: 1 addition & 0 deletions drivers/crypto/allwinner/sun8i-ss/Makefile
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Original file line number Diff line number Diff line change
@@ -1,3 +1,4 @@
obj-$(CONFIG_CRYPTO_DEV_SUN8I_SS) += sun8i-ss.o
sun8i-ss-y += sun8i-ss-core.o sun8i-ss-cipher.o
sun8i-ss-$(CONFIG_CRYPTO_DEV_SUN8I_SS_PRNG) += sun8i-ss-prng.o
sun8i-ss-$(CONFIG_CRYPTO_DEV_SUN8I_SS_HASH) += sun8i-ss-hash.o
155 changes: 155 additions & 0 deletions drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c
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Original file line number Diff line number Diff line change
Expand Up @@ -41,6 +41,8 @@ static const struct ss_variant ss_a80_variant = {
static const struct ss_variant ss_a83t_variant = {
.alg_cipher = { SS_ALG_AES, SS_ALG_DES, SS_ALG_3DES,
},
.alg_hash = { SS_ALG_MD5, SS_ALG_SHA1, SS_ALG_SHA224, SS_ALG_SHA256,
},
.op_mode = { SS_OP_ECB, SS_OP_CBC,
},
.ss_clks = {
Expand Down Expand Up @@ -284,6 +286,128 @@ static struct sun8i_ss_alg_template ss_algs[] = {
}
},
#endif
#ifdef CONFIG_CRYPTO_DEV_SUN8I_SS_HASH
{ .type = CRYPTO_ALG_TYPE_AHASH,
.ss_algo_id = SS_ID_HASH_MD5,
.alg.hash = {
.init = sun8i_ss_hash_init,
.update = sun8i_ss_hash_update,
.final = sun8i_ss_hash_final,
.finup = sun8i_ss_hash_finup,
.digest = sun8i_ss_hash_digest,
.export = sun8i_ss_hash_export,
.import = sun8i_ss_hash_import,
.halg = {
.digestsize = MD5_DIGEST_SIZE,
.statesize = sizeof(struct md5_state),
.base = {
.cra_name = "md5",
.cra_driver_name = "md5-sun8i-ss",
.cra_priority = 300,
.cra_alignmask = 3,
.cra_flags = CRYPTO_ALG_TYPE_AHASH |
CRYPTO_ALG_ASYNC |
CRYPTO_ALG_NEED_FALLBACK,
.cra_blocksize = MD5_HMAC_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct sun8i_ss_hash_tfm_ctx),
.cra_module = THIS_MODULE,
.cra_init = sun8i_ss_hash_crainit,
.cra_exit = sun8i_ss_hash_craexit,
}
}
}
},
{ .type = CRYPTO_ALG_TYPE_AHASH,
.ss_algo_id = SS_ID_HASH_SHA1,
.alg.hash = {
.init = sun8i_ss_hash_init,
.update = sun8i_ss_hash_update,
.final = sun8i_ss_hash_final,
.finup = sun8i_ss_hash_finup,
.digest = sun8i_ss_hash_digest,
.export = sun8i_ss_hash_export,
.import = sun8i_ss_hash_import,
.halg = {
.digestsize = SHA1_DIGEST_SIZE,
.statesize = sizeof(struct sha1_state),
.base = {
.cra_name = "sha1",
.cra_driver_name = "sha1-sun8i-ss",
.cra_priority = 300,
.cra_alignmask = 3,
.cra_flags = CRYPTO_ALG_TYPE_AHASH |
CRYPTO_ALG_ASYNC |
CRYPTO_ALG_NEED_FALLBACK,
.cra_blocksize = SHA1_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct sun8i_ss_hash_tfm_ctx),
.cra_module = THIS_MODULE,
.cra_init = sun8i_ss_hash_crainit,
.cra_exit = sun8i_ss_hash_craexit,
}
}
}
},
{ .type = CRYPTO_ALG_TYPE_AHASH,
.ss_algo_id = SS_ID_HASH_SHA224,
.alg.hash = {
.init = sun8i_ss_hash_init,
.update = sun8i_ss_hash_update,
.final = sun8i_ss_hash_final,
.finup = sun8i_ss_hash_finup,
.digest = sun8i_ss_hash_digest,
.export = sun8i_ss_hash_export,
.import = sun8i_ss_hash_import,
.halg = {
.digestsize = SHA224_DIGEST_SIZE,
.statesize = sizeof(struct sha256_state),
.base = {
.cra_name = "sha224",
.cra_driver_name = "sha224-sun8i-ss",
.cra_priority = 300,
.cra_alignmask = 3,
.cra_flags = CRYPTO_ALG_TYPE_AHASH |
CRYPTO_ALG_ASYNC |
CRYPTO_ALG_NEED_FALLBACK,
.cra_blocksize = SHA224_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct sun8i_ss_hash_tfm_ctx),
.cra_module = THIS_MODULE,
.cra_init = sun8i_ss_hash_crainit,
.cra_exit = sun8i_ss_hash_craexit,
}
}
}
},
{ .type = CRYPTO_ALG_TYPE_AHASH,
.ss_algo_id = SS_ID_HASH_SHA256,
.alg.hash = {
.init = sun8i_ss_hash_init,
.update = sun8i_ss_hash_update,
.final = sun8i_ss_hash_final,
.finup = sun8i_ss_hash_finup,
.digest = sun8i_ss_hash_digest,
.export = sun8i_ss_hash_export,
.import = sun8i_ss_hash_import,
.halg = {
.digestsize = SHA256_DIGEST_SIZE,
.statesize = sizeof(struct sha256_state),
.base = {
.cra_name = "sha256",
.cra_driver_name = "sha256-sun8i-ss",
.cra_priority = 300,
.cra_alignmask = 3,
.cra_flags = CRYPTO_ALG_TYPE_AHASH |
CRYPTO_ALG_ASYNC |
CRYPTO_ALG_NEED_FALLBACK,
.cra_blocksize = SHA256_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct sun8i_ss_hash_tfm_ctx),
.cra_module = THIS_MODULE,
.cra_init = sun8i_ss_hash_crainit,
.cra_exit = sun8i_ss_hash_craexit,
}
}
}
},
#endif
};

#ifdef CONFIG_CRYPTO_DEV_SUN8I_SS_DEBUG
Expand Down Expand Up @@ -311,6 +435,12 @@ static int sun8i_ss_debugfs_show(struct seq_file *seq, void *v)
ss_algs[i].alg.rng.base.cra_name,
ss_algs[i].stat_req, ss_algs[i].stat_bytes);
break;
case CRYPTO_ALG_TYPE_AHASH:
seq_printf(seq, "%s %s %lu %lu\n",
ss_algs[i].alg.hash.halg.base.cra_driver_name,
ss_algs[i].alg.hash.halg.base.cra_name,
ss_algs[i].stat_req, ss_algs[i].stat_fb);
break;
}
}
return 0;
Expand Down Expand Up @@ -471,6 +601,26 @@ static int sun8i_ss_register_algs(struct sun8i_ss_dev *ss)
ss_algs[i].ss = NULL;
}
break;
case CRYPTO_ALG_TYPE_AHASH:
id = ss_algs[i].ss_algo_id;
ss_method = ss->variant->alg_hash[id];
if (ss_method == SS_ID_NOTSUPP) {
dev_info(ss->dev,
"DEBUG: Algo of %s not supported\n",
ss_algs[i].alg.hash.halg.base.cra_name);
ss_algs[i].ss = NULL;
break;
}
dev_info(ss->dev, "Register %s\n",
ss_algs[i].alg.hash.halg.base.cra_name);
err = crypto_register_ahash(&ss_algs[i].alg.hash);
if (err) {
dev_err(ss->dev, "ERROR: Fail to register %s\n",
ss_algs[i].alg.hash.halg.base.cra_name);
ss_algs[i].ss = NULL;
return err;
}
break;
default:
ss_algs[i].ss = NULL;
dev_err(ss->dev, "ERROR: tried to register an unknown algo\n");
Expand All @@ -497,6 +647,11 @@ static void sun8i_ss_unregister_algs(struct sun8i_ss_dev *ss)
ss_algs[i].alg.rng.base.cra_name);
crypto_unregister_rng(&ss_algs[i].alg.rng);
break;
case CRYPTO_ALG_TYPE_AHASH:
dev_info(ss->dev, "Unregister %d %s\n", i,
ss_algs[i].alg.hash.halg.base.cra_name);
crypto_unregister_ahash(&ss_algs[i].alg.hash);
break;
}
}
}
Expand Down
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