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Diffstat (limited to 'target/linux/apm821xx/patches-4.14/020-0025-crypto-crypto4xx-add-aes-gcm-support.patch')
-rw-r--r--target/linux/apm821xx/patches-4.14/020-0025-crypto-crypto4xx-add-aes-gcm-support.patch220
1 files changed, 0 insertions, 220 deletions
diff --git a/target/linux/apm821xx/patches-4.14/020-0025-crypto-crypto4xx-add-aes-gcm-support.patch b/target/linux/apm821xx/patches-4.14/020-0025-crypto-crypto4xx-add-aes-gcm-support.patch
deleted file mode 100644
index d56f838262..0000000000
--- a/target/linux/apm821xx/patches-4.14/020-0025-crypto-crypto4xx-add-aes-gcm-support.patch
+++ /dev/null
@@ -1,220 +0,0 @@
-From 59231368d3a959fc30c5142c406a045f49130daa Mon Sep 17 00:00:00 2001
-From: Christian Lamparter <chunkeey@gmail.com>
-Date: Wed, 4 Oct 2017 01:00:17 +0200
-Subject: [PATCH 25/25] crypto: crypto4xx - add aes-gcm support
-
-This patch adds aes-gcm support to crypto4xx.
-
-Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
-Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
----
- drivers/crypto/amcc/crypto4xx_alg.c | 139 +++++++++++++++++++++++++++++++++++
- drivers/crypto/amcc/crypto4xx_core.c | 22 ++++++
- drivers/crypto/amcc/crypto4xx_core.h | 4 +
- 3 files changed, 165 insertions(+)
-
---- a/drivers/crypto/amcc/crypto4xx_alg.c
-+++ b/drivers/crypto/amcc/crypto4xx_alg.c
-@@ -28,6 +28,7 @@
- #include <crypto/algapi.h>
- #include <crypto/aead.h>
- #include <crypto/aes.h>
-+#include <crypto/gcm.h>
- #include <crypto/sha.h>
- #include <crypto/ctr.h>
- #include "crypto4xx_reg_def.h"
-@@ -418,6 +419,144 @@ int crypto4xx_setauthsize_aead(struct cr
- }
-
- /**
-+ * AES-GCM Functions
-+ */
-+
-+static int crypto4xx_aes_gcm_validate_keylen(unsigned int keylen)
-+{
-+ switch (keylen) {
-+ case 16:
-+ case 24:
-+ case 32:
-+ return 0;
-+ default:
-+ return -EINVAL;
-+ }
-+}
-+
-+static int crypto4xx_compute_gcm_hash_key_sw(__le32 *hash_start, const u8 *key,
-+ unsigned int keylen)
-+{
-+ struct crypto_cipher *aes_tfm = NULL;
-+ uint8_t src[16] = { 0 };
-+ int rc = 0;
-+
-+ aes_tfm = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC |
-+ CRYPTO_ALG_NEED_FALLBACK);
-+ if (IS_ERR(aes_tfm)) {
-+ rc = PTR_ERR(aes_tfm);
-+ pr_warn("could not load aes cipher driver: %d\n", rc);
-+ return rc;
-+ }
-+
-+ rc = crypto_cipher_setkey(aes_tfm, key, keylen);
-+ if (rc) {
-+ pr_err("setkey() failed: %d\n", rc);
-+ goto out;
-+ }
-+
-+ crypto_cipher_encrypt_one(aes_tfm, src, src);
-+ crypto4xx_memcpy_to_le32(hash_start, src, 16);
-+out:
-+ crypto_free_cipher(aes_tfm);
-+ return rc;
-+}
-+
-+int crypto4xx_setkey_aes_gcm(struct crypto_aead *cipher,
-+ const u8 *key, unsigned int keylen)
-+{
-+ struct crypto_tfm *tfm = crypto_aead_tfm(cipher);
-+ struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm);
-+ struct dynamic_sa_ctl *sa;
-+ int rc = 0;
-+
-+ if (crypto4xx_aes_gcm_validate_keylen(keylen) != 0) {
-+ crypto_aead_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
-+ return -EINVAL;
-+ }
-+
-+ rc = crypto4xx_setup_fallback(ctx, cipher, key, keylen);
-+ if (rc)
-+ return rc;
-+
-+ if (ctx->sa_in || ctx->sa_out)
-+ crypto4xx_free_sa(ctx);
-+
-+ rc = crypto4xx_alloc_sa(ctx, SA_AES128_GCM_LEN + (keylen - 16) / 4);
-+ if (rc)
-+ return rc;
-+
-+ sa = (struct dynamic_sa_ctl *) ctx->sa_in;
-+
-+ sa->sa_contents.w = SA_AES_GCM_CONTENTS | (keylen << 2);
-+ set_dynamic_sa_command_0(sa, SA_SAVE_HASH, SA_NOT_SAVE_IV,
-+ SA_LOAD_HASH_FROM_SA, SA_LOAD_IV_FROM_STATE,
-+ SA_NO_HEADER_PROC, SA_HASH_ALG_GHASH,
-+ SA_CIPHER_ALG_AES, SA_PAD_TYPE_ZERO,
-+ SA_OP_GROUP_BASIC, SA_OPCODE_HASH_DECRYPT,
-+ DIR_INBOUND);
-+ set_dynamic_sa_command_1(sa, CRYPTO_MODE_CTR, SA_HASH_MODE_HASH,
-+ CRYPTO_FEEDBACK_MODE_NO_FB, SA_EXTENDED_SN_OFF,
-+ SA_SEQ_MASK_ON, SA_MC_DISABLE,
-+ SA_NOT_COPY_PAD, SA_COPY_PAYLOAD,
-+ SA_NOT_COPY_HDR);
-+
-+ sa->sa_command_1.bf.key_len = keylen >> 3;
-+
-+ crypto4xx_memcpy_to_le32(get_dynamic_sa_key_field(sa),
-+ key, keylen);
-+
-+ rc = crypto4xx_compute_gcm_hash_key_sw(get_dynamic_sa_inner_digest(sa),
-+ key, keylen);
-+ if (rc) {
-+ pr_err("GCM hash key setting failed = %d\n", rc);
-+ goto err;
-+ }
-+
-+ memcpy(ctx->sa_out, ctx->sa_in, ctx->sa_len * 4);
-+ sa = (struct dynamic_sa_ctl *) ctx->sa_out;
-+ sa->sa_command_0.bf.dir = DIR_OUTBOUND;
-+ sa->sa_command_0.bf.opcode = SA_OPCODE_ENCRYPT_HASH;
-+
-+ return 0;
-+err:
-+ crypto4xx_free_sa(ctx);
-+ return rc;
-+}
-+
-+static inline int crypto4xx_crypt_aes_gcm(struct aead_request *req,
-+ bool decrypt)
-+{
-+ struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
-+ unsigned int len = req->cryptlen;
-+ __le32 iv[4];
-+
-+ if (crypto4xx_aead_need_fallback(req, false, decrypt))
-+ return crypto4xx_aead_fallback(req, ctx, decrypt);
-+
-+ crypto4xx_memcpy_to_le32(iv, req->iv, GCM_AES_IV_SIZE);
-+ iv[3] = cpu_to_le32(1);
-+
-+ if (decrypt)
-+ len -= crypto_aead_authsize(crypto_aead_reqtfm(req));
-+
-+ return crypto4xx_build_pd(&req->base, ctx, req->src, req->dst,
-+ len, iv, sizeof(iv),
-+ decrypt ? ctx->sa_in : ctx->sa_out,
-+ ctx->sa_len, req->assoclen);
-+}
-+
-+int crypto4xx_encrypt_aes_gcm(struct aead_request *req)
-+{
-+ return crypto4xx_crypt_aes_gcm(req, false);
-+}
-+
-+int crypto4xx_decrypt_aes_gcm(struct aead_request *req)
-+{
-+ return crypto4xx_crypt_aes_gcm(req, true);
-+}
-+
-+/**
- * HASH SHA1 Functions
- */
- static int crypto4xx_hash_alg_init(struct crypto_tfm *tfm,
---- a/drivers/crypto/amcc/crypto4xx_core.c
-+++ b/drivers/crypto/amcc/crypto4xx_core.c
-@@ -38,6 +38,7 @@
- #include <crypto/aead.h>
- #include <crypto/aes.h>
- #include <crypto/ctr.h>
-+#include <crypto/gcm.h>
- #include <crypto/sha.h>
- #include <crypto/scatterwalk.h>
- #include <crypto/internal/aead.h>
-@@ -1232,6 +1233,27 @@ static struct crypto4xx_alg_common crypt
- .cra_priority = CRYPTO4XX_CRYPTO_PRIORITY,
- .cra_flags = CRYPTO_ALG_ASYNC |
- CRYPTO_ALG_NEED_FALLBACK |
-+ CRYPTO_ALG_KERN_DRIVER_ONLY,
-+ .cra_blocksize = 1,
-+ .cra_ctxsize = sizeof(struct crypto4xx_ctx),
-+ .cra_module = THIS_MODULE,
-+ },
-+ } },
-+ { .type = CRYPTO_ALG_TYPE_AEAD, .u.aead = {
-+ .setkey = crypto4xx_setkey_aes_gcm,
-+ .setauthsize = crypto4xx_setauthsize_aead,
-+ .encrypt = crypto4xx_encrypt_aes_gcm,
-+ .decrypt = crypto4xx_decrypt_aes_gcm,
-+ .init = crypto4xx_aead_init,
-+ .exit = crypto4xx_aead_exit,
-+ .ivsize = GCM_AES_IV_SIZE,
-+ .maxauthsize = 16,
-+ .base = {
-+ .cra_name = "gcm(aes)",
-+ .cra_driver_name = "gcm-aes-ppc4xx",
-+ .cra_priority = CRYPTO4XX_CRYPTO_PRIORITY,
-+ .cra_flags = CRYPTO_ALG_ASYNC |
-+ CRYPTO_ALG_NEED_FALLBACK |
- CRYPTO_ALG_KERN_DRIVER_ONLY,
- .cra_blocksize = 1,
- .cra_ctxsize = sizeof(struct crypto4xx_ctx),
---- a/drivers/crypto/amcc/crypto4xx_core.h
-+++ b/drivers/crypto/amcc/crypto4xx_core.h
-@@ -229,5 +229,9 @@ int crypto4xx_setkey_aes_ccm(struct cryp
- const u8 *key, unsigned int keylen);
- int crypto4xx_encrypt_aes_ccm(struct aead_request *req);
- int crypto4xx_decrypt_aes_ccm(struct aead_request *req);
-+int crypto4xx_setkey_aes_gcm(struct crypto_aead *cipher,
-+ const u8 *key, unsigned int keylen);
-+int crypto4xx_encrypt_aes_gcm(struct aead_request *req);
-+int crypto4xx_decrypt_aes_gcm(struct aead_request *req);
-
- #endif
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-25 21:57:32 +0000