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Diffstat (limited to 'target/linux/apm821xx/patches-4.14/020-0024-crypto-crypto4xx-add-aes-ccm-support.patch')
-rw-r--r--target/linux/apm821xx/patches-4.14/020-0024-crypto-crypto4xx-add-aes-ccm-support.patch256
1 files changed, 0 insertions, 256 deletions
diff --git a/target/linux/apm821xx/patches-4.14/020-0024-crypto-crypto4xx-add-aes-ccm-support.patch b/target/linux/apm821xx/patches-4.14/020-0024-crypto-crypto4xx-add-aes-ccm-support.patch
deleted file mode 100644
index c3d4a07a80..0000000000
--- a/target/linux/apm821xx/patches-4.14/020-0024-crypto-crypto4xx-add-aes-ccm-support.patch
+++ /dev/null
@@ -1,256 +0,0 @@
-From 65ea8b678fcf385ac18864743bae66c0643e6842 Mon Sep 17 00:00:00 2001
-From: Christian Lamparter <chunkeey@gmail.com>
-Date: Wed, 4 Oct 2017 01:00:16 +0200
-Subject: [PATCH 24/25] crypto: crypto4xx - add aes-ccm support
-
-This patch adds aes-ccm support.
-
-Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
-Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
----
- drivers/crypto/amcc/crypto4xx_alg.c | 185 +++++++++++++++++++++++++++++++++++
- drivers/crypto/amcc/crypto4xx_core.c | 23 +++++
- drivers/crypto/amcc/crypto4xx_core.h | 8 ++
- 3 files changed, 216 insertions(+)
-
---- a/drivers/crypto/amcc/crypto4xx_alg.c
-+++ b/drivers/crypto/amcc/crypto4xx_alg.c
-@@ -232,6 +232,191 @@ int crypto4xx_rfc3686_decrypt(struct abl
- ctx->sa_out, ctx->sa_len, 0);
- }
-
-+static inline bool crypto4xx_aead_need_fallback(struct aead_request *req,
-+ bool is_ccm, bool decrypt)
-+{
-+ struct crypto_aead *aead = crypto_aead_reqtfm(req);
-+
-+ /* authsize has to be a multiple of 4 */
-+ if (aead->authsize & 3)
-+ return true;
-+
-+ /*
-+ * hardware does not handle cases where cryptlen
-+ * is less than a block
-+ */
-+ if (req->cryptlen < AES_BLOCK_SIZE)
-+ return true;
-+
-+ /* assoc len needs to be a multiple of 4 */
-+ if (req->assoclen & 0x3)
-+ return true;
-+
-+ /* CCM supports only counter field length of 2 and 4 bytes */
-+ if (is_ccm && !(req->iv[0] == 1 || req->iv[0] == 3))
-+ return true;
-+
-+ /* CCM - fix CBC MAC mismatch in special case */
-+ if (is_ccm && decrypt && !req->assoclen)
-+ return true;
-+
-+ return false;
-+}
-+
-+static int crypto4xx_aead_fallback(struct aead_request *req,
-+ struct crypto4xx_ctx *ctx, bool do_decrypt)
-+{
-+ char aead_req_data[sizeof(struct aead_request) +
-+ crypto_aead_reqsize(ctx->sw_cipher.aead)]
-+ __aligned(__alignof__(struct aead_request));
-+
-+ struct aead_request *subreq = (void *) aead_req_data;
-+
-+ memset(subreq, 0, sizeof(aead_req_data));
-+
-+ aead_request_set_tfm(subreq, ctx->sw_cipher.aead);
-+ aead_request_set_callback(subreq, req->base.flags,
-+ req->base.complete, req->base.data);
-+ aead_request_set_crypt(subreq, req->src, req->dst, req->cryptlen,
-+ req->iv);
-+ aead_request_set_ad(subreq, req->assoclen);
-+ return do_decrypt ? crypto_aead_decrypt(subreq) :
-+ crypto_aead_encrypt(subreq);
-+}
-+
-+static int crypto4xx_setup_fallback(struct crypto4xx_ctx *ctx,
-+ struct crypto_aead *cipher,
-+ const u8 *key,
-+ unsigned int keylen)
-+{
-+ int rc;
-+
-+ crypto_aead_clear_flags(ctx->sw_cipher.aead, CRYPTO_TFM_REQ_MASK);
-+ crypto_aead_set_flags(ctx->sw_cipher.aead,
-+ crypto_aead_get_flags(cipher) & CRYPTO_TFM_REQ_MASK);
-+ rc = crypto_aead_setkey(ctx->sw_cipher.aead, key, keylen);
-+ crypto_aead_clear_flags(cipher, CRYPTO_TFM_RES_MASK);
-+ crypto_aead_set_flags(cipher,
-+ crypto_aead_get_flags(ctx->sw_cipher.aead) &
-+ CRYPTO_TFM_RES_MASK);
-+
-+ return rc;
-+}
-+
-+/**
-+ * AES-CCM Functions
-+ */
-+
-+int crypto4xx_setkey_aes_ccm(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;
-+
-+ 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_CCM_LEN + (keylen - 16) / 4);
-+ if (rc)
-+ return rc;
-+
-+ /* Setup SA */
-+ sa = (struct dynamic_sa_ctl *) ctx->sa_in;
-+ sa->sa_contents.w = SA_AES_CCM_CONTENTS | (keylen << 2);
-+
-+ set_dynamic_sa_command_0(sa, SA_NOT_SAVE_HASH, SA_NOT_SAVE_IV,
-+ SA_LOAD_HASH_FROM_SA, SA_LOAD_IV_FROM_STATE,
-+ SA_NO_HEADER_PROC, SA_HASH_ALG_CBC_MAC,
-+ 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_OFF, SA_MC_ENABLE,
-+ 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);
-+
-+ memcpy(ctx->sa_out, ctx->sa_in, ctx->sa_len * 4);
-+ sa = (struct dynamic_sa_ctl *) ctx->sa_out;
-+
-+ 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_CBC_MAC,
-+ SA_CIPHER_ALG_AES,
-+ SA_PAD_TYPE_ZERO, SA_OP_GROUP_BASIC,
-+ SA_OPCODE_ENCRYPT_HASH, DIR_OUTBOUND);
-+
-+ 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_OFF, SA_MC_ENABLE,
-+ SA_COPY_PAD, SA_COPY_PAYLOAD,
-+ SA_NOT_COPY_HDR);
-+
-+ sa->sa_command_1.bf.key_len = keylen >> 3;
-+ return 0;
-+}
-+
-+static int crypto4xx_crypt_aes_ccm(struct aead_request *req, bool decrypt)
-+{
-+ struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
-+ struct crypto_aead *aead = crypto_aead_reqtfm(req);
-+ unsigned int len = req->cryptlen;
-+ __le32 iv[16];
-+ u32 tmp_sa[ctx->sa_len * 4];
-+ struct dynamic_sa_ctl *sa = (struct dynamic_sa_ctl *)tmp_sa;
-+
-+ if (crypto4xx_aead_need_fallback(req, true, decrypt))
-+ return crypto4xx_aead_fallback(req, ctx, decrypt);
-+
-+ if (decrypt)
-+ len -= crypto_aead_authsize(aead);
-+
-+ memcpy(tmp_sa, decrypt ? ctx->sa_in : ctx->sa_out, sizeof(tmp_sa));
-+ sa->sa_command_0.bf.digest_len = crypto_aead_authsize(aead) >> 2;
-+
-+ if (req->iv[0] == 1) {
-+ /* CRYPTO_MODE_AES_ICM */
-+ sa->sa_command_1.bf.crypto_mode9_8 = 1;
-+ }
-+
-+ iv[3] = cpu_to_le32(0);
-+ crypto4xx_memcpy_to_le32(iv, req->iv, 16 - (req->iv[0] + 1));
-+
-+ return crypto4xx_build_pd(&req->base, ctx, req->src, req->dst,
-+ len, iv, sizeof(iv),
-+ sa, ctx->sa_len, req->assoclen);
-+}
-+
-+int crypto4xx_encrypt_aes_ccm(struct aead_request *req)
-+{
-+ return crypto4xx_crypt_aes_ccm(req, false);
-+}
-+
-+int crypto4xx_decrypt_aes_ccm(struct aead_request *req)
-+{
-+ return crypto4xx_crypt_aes_ccm(req, true);
-+}
-+
-+int crypto4xx_setauthsize_aead(struct crypto_aead *cipher,
-+ unsigned int authsize)
-+{
-+ struct crypto_tfm *tfm = crypto_aead_tfm(cipher);
-+ struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm);
-+
-+ return crypto_aead_setauthsize(ctx->sw_cipher.aead, authsize);
-+}
-+
- /**
- * HASH SHA1 Functions
- */
---- a/drivers/crypto/amcc/crypto4xx_core.c
-+++ b/drivers/crypto/amcc/crypto4xx_core.c
-@@ -1215,6 +1215,29 @@ static struct crypto4xx_alg_common crypt
- }
- }
- } },
-+
-+ /* AEAD */
-+ { .type = CRYPTO_ALG_TYPE_AEAD, .u.aead = {
-+ .setkey = crypto4xx_setkey_aes_ccm,
-+ .setauthsize = crypto4xx_setauthsize_aead,
-+ .encrypt = crypto4xx_encrypt_aes_ccm,
-+ .decrypt = crypto4xx_decrypt_aes_ccm,
-+ .init = crypto4xx_aead_init,
-+ .exit = crypto4xx_aead_exit,
-+ .ivsize = AES_BLOCK_SIZE,
-+ .maxauthsize = 16,
-+ .base = {
-+ .cra_name = "ccm(aes)",
-+ .cra_driver_name = "ccm-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),
-+ .cra_module = THIS_MODULE,
-+ },
-+ } },
- };
-
- /**
---- a/drivers/crypto/amcc/crypto4xx_core.h
-+++ b/drivers/crypto/amcc/crypto4xx_core.h
-@@ -222,4 +222,12 @@ static inline void crypto4xx_memcpy_to_l
- {
- crypto4xx_memcpy_swab32((u32 *)dst, buf, len);
- }
-+
-+int crypto4xx_setauthsize_aead(struct crypto_aead *ciper,
-+ unsigned int authsize);
-+int crypto4xx_setkey_aes_ccm(struct crypto_aead *cipher,
-+ const u8 *key, unsigned int keylen);
-+int crypto4xx_encrypt_aes_ccm(struct aead_request *req);
-+int crypto4xx_decrypt_aes_ccm(struct aead_request *req);
-+
- #endif
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