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-rw-r--r--arch/arm/crypto/aes-ce-glue.c730
1 files changed, 730 insertions, 0 deletions
diff --git a/arch/arm/crypto/aes-ce-glue.c b/arch/arm/crypto/aes-ce-glue.c
new file mode 100644
index 0000000000..b668c97663
--- /dev/null
+++ b/arch/arm/crypto/aes-ce-glue.c
@@ -0,0 +1,730 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * aes-ce-glue.c - wrapper code for ARMv8 AES
+ *
+ * Copyright (C) 2015 Linaro Ltd <ard.biesheuvel@linaro.org>
+ */
+
+#include <asm/hwcap.h>
+#include <asm/neon.h>
+#include <asm/simd.h>
+#include <asm/unaligned.h>
+#include <crypto/aes.h>
+#include <crypto/ctr.h>
+#include <crypto/internal/simd.h>
+#include <crypto/internal/skcipher.h>
+#include <crypto/scatterwalk.h>
+#include <linux/cpufeature.h>
+#include <linux/module.h>
+#include <crypto/xts.h>
+
+MODULE_DESCRIPTION("AES-ECB/CBC/CTR/XTS using ARMv8 Crypto Extensions");
+MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
+MODULE_LICENSE("GPL v2");
+
+/* defined in aes-ce-core.S */
+asmlinkage u32 ce_aes_sub(u32 input);
+asmlinkage void ce_aes_invert(void *dst, void *src);
+
+asmlinkage void ce_aes_ecb_encrypt(u8 out[], u8 const in[], u32 const rk[],
+ int rounds, int blocks);
+asmlinkage void ce_aes_ecb_decrypt(u8 out[], u8 const in[], u32 const rk[],
+ int rounds, int blocks);
+
+asmlinkage void ce_aes_cbc_encrypt(u8 out[], u8 const in[], u32 const rk[],
+ int rounds, int blocks, u8 iv[]);
+asmlinkage void ce_aes_cbc_decrypt(u8 out[], u8 const in[], u32 const rk[],
+ int rounds, int blocks, u8 iv[]);
+asmlinkage void ce_aes_cbc_cts_encrypt(u8 out[], u8 const in[], u32 const rk[],
+ int rounds, int bytes, u8 const iv[]);
+asmlinkage void ce_aes_cbc_cts_decrypt(u8 out[], u8 const in[], u32 const rk[],
+ int rounds, int bytes, u8 const iv[]);
+
+asmlinkage void ce_aes_ctr_encrypt(u8 out[], u8 const in[], u32 const rk[],
+ int rounds, int blocks, u8 ctr[]);
+
+asmlinkage void ce_aes_xts_encrypt(u8 out[], u8 const in[], u32 const rk1[],
+ int rounds, int bytes, u8 iv[],
+ u32 const rk2[], int first);
+asmlinkage void ce_aes_xts_decrypt(u8 out[], u8 const in[], u32 const rk1[],
+ int rounds, int bytes, u8 iv[],
+ u32 const rk2[], int first);
+
+struct aes_block {
+ u8 b[AES_BLOCK_SIZE];
+};
+
+static int num_rounds(struct crypto_aes_ctx *ctx)
+{
+ /*
+ * # of rounds specified by AES:
+ * 128 bit key 10 rounds
+ * 192 bit key 12 rounds
+ * 256 bit key 14 rounds
+ * => n byte key => 6 + (n/4) rounds
+ */
+ return 6 + ctx->key_length / 4;
+}
+
+static int ce_aes_expandkey(struct crypto_aes_ctx *ctx, const u8 *in_key,
+ unsigned int key_len)
+{
+ /*
+ * The AES key schedule round constants
+ */
+ static u8 const rcon[] = {
+ 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36,
+ };
+
+ u32 kwords = key_len / sizeof(u32);
+ struct aes_block *key_enc, *key_dec;
+ int i, j;
+
+ if (key_len != AES_KEYSIZE_128 &&
+ key_len != AES_KEYSIZE_192 &&
+ key_len != AES_KEYSIZE_256)
+ return -EINVAL;
+
+ ctx->key_length = key_len;
+ for (i = 0; i < kwords; i++)
+ ctx->key_enc[i] = get_unaligned_le32(in_key + i * sizeof(u32));
+
+ kernel_neon_begin();
+ for (i = 0; i < sizeof(rcon); i++) {
+ u32 *rki = ctx->key_enc + (i * kwords);
+ u32 *rko = rki + kwords;
+
+ rko[0] = ror32(ce_aes_sub(rki[kwords - 1]), 8);
+ rko[0] = rko[0] ^ rki[0] ^ rcon[i];
+ rko[1] = rko[0] ^ rki[1];
+ rko[2] = rko[1] ^ rki[2];
+ rko[3] = rko[2] ^ rki[3];
+
+ if (key_len == AES_KEYSIZE_192) {
+ if (i >= 7)
+ break;
+ rko[4] = rko[3] ^ rki[4];
+ rko[5] = rko[4] ^ rki[5];
+ } else if (key_len == AES_KEYSIZE_256) {
+ if (i >= 6)
+ break;
+ rko[4] = ce_aes_sub(rko[3]) ^ rki[4];
+ rko[5] = rko[4] ^ rki[5];
+ rko[6] = rko[5] ^ rki[6];
+ rko[7] = rko[6] ^ rki[7];
+ }
+ }
+
+ /*
+ * Generate the decryption keys for the Equivalent Inverse Cipher.
+ * This involves reversing the order of the round keys, and applying
+ * the Inverse Mix Columns transformation on all but the first and
+ * the last one.
+ */
+ key_enc = (struct aes_block *)ctx->key_enc;
+ key_dec = (struct aes_block *)ctx->key_dec;
+ j = num_rounds(ctx);
+
+ key_dec[0] = key_enc[j];
+ for (i = 1, j--; j > 0; i++, j--)
+ ce_aes_invert(key_dec + i, key_enc + j);
+ key_dec[i] = key_enc[0];
+
+ kernel_neon_end();
+ return 0;
+}
+
+static int ce_aes_setkey(struct crypto_skcipher *tfm, const u8 *in_key,
+ unsigned int key_len)
+{
+ struct crypto_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
+
+ return ce_aes_expandkey(ctx, in_key, key_len);
+}
+
+struct crypto_aes_xts_ctx {
+ struct crypto_aes_ctx key1;
+ struct crypto_aes_ctx __aligned(8) key2;
+};
+
+static int xts_set_key(struct crypto_skcipher *tfm, const u8 *in_key,
+ unsigned int key_len)
+{
+ struct crypto_aes_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
+ int ret;
+
+ ret = xts_verify_key(tfm, in_key, key_len);
+ if (ret)
+ return ret;
+
+ ret = ce_aes_expandkey(&ctx->key1, in_key, key_len / 2);
+ if (!ret)
+ ret = ce_aes_expandkey(&ctx->key2, &in_key[key_len / 2],
+ key_len / 2);
+ return ret;
+}
+
+static int ecb_encrypt(struct skcipher_request *req)
+{
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+ struct crypto_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
+ struct skcipher_walk walk;
+ unsigned int blocks;
+ int err;
+
+ err = skcipher_walk_virt(&walk, req, false);
+
+ while ((blocks = (walk.nbytes / AES_BLOCK_SIZE))) {
+ kernel_neon_begin();
+ ce_aes_ecb_encrypt(walk.dst.virt.addr, walk.src.virt.addr,
+ ctx->key_enc, num_rounds(ctx), blocks);
+ kernel_neon_end();
+ err = skcipher_walk_done(&walk, walk.nbytes % AES_BLOCK_SIZE);
+ }
+ return err;
+}
+
+static int ecb_decrypt(struct skcipher_request *req)
+{
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+ struct crypto_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
+ struct skcipher_walk walk;
+ unsigned int blocks;
+ int err;
+
+ err = skcipher_walk_virt(&walk, req, false);
+
+ while ((blocks = (walk.nbytes / AES_BLOCK_SIZE))) {
+ kernel_neon_begin();
+ ce_aes_ecb_decrypt(walk.dst.virt.addr, walk.src.virt.addr,
+ ctx->key_dec, num_rounds(ctx), blocks);
+ kernel_neon_end();
+ err = skcipher_walk_done(&walk, walk.nbytes % AES_BLOCK_SIZE);
+ }
+ return err;
+}
+
+static int cbc_encrypt_walk(struct skcipher_request *req,
+ struct skcipher_walk *walk)
+{
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+ struct crypto_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
+ unsigned int blocks;
+ int err = 0;
+
+ while ((blocks = (walk->nbytes / AES_BLOCK_SIZE))) {
+ kernel_neon_begin();
+ ce_aes_cbc_encrypt(walk->dst.virt.addr, walk->src.virt.addr,
+ ctx->key_enc, num_rounds(ctx), blocks,
+ walk->iv);
+ kernel_neon_end();
+ err = skcipher_walk_done(walk, walk->nbytes % AES_BLOCK_SIZE);
+ }
+ return err;
+}
+
+static int cbc_encrypt(struct skcipher_request *req)
+{
+ struct skcipher_walk walk;
+ int err;
+
+ err = skcipher_walk_virt(&walk, req, false);
+ if (err)
+ return err;
+ return cbc_encrypt_walk(req, &walk);
+}
+
+static int cbc_decrypt_walk(struct skcipher_request *req,
+ struct skcipher_walk *walk)
+{
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+ struct crypto_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
+ unsigned int blocks;
+ int err = 0;
+
+ while ((blocks = (walk->nbytes / AES_BLOCK_SIZE))) {
+ kernel_neon_begin();
+ ce_aes_cbc_decrypt(walk->dst.virt.addr, walk->src.virt.addr,
+ ctx->key_dec, num_rounds(ctx), blocks,
+ walk->iv);
+ kernel_neon_end();
+ err = skcipher_walk_done(walk, walk->nbytes % AES_BLOCK_SIZE);
+ }
+ return err;
+}
+
+static int cbc_decrypt(struct skcipher_request *req)
+{
+ struct skcipher_walk walk;
+ int err;
+
+ err = skcipher_walk_virt(&walk, req, false);
+ if (err)
+ return err;
+ return cbc_decrypt_walk(req, &walk);
+}
+
+static int cts_cbc_encrypt(struct skcipher_request *req)
+{
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+ struct crypto_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
+ int cbc_blocks = DIV_ROUND_UP(req->cryptlen, AES_BLOCK_SIZE) - 2;
+ struct scatterlist *src = req->src, *dst = req->dst;
+ struct scatterlist sg_src[2], sg_dst[2];
+ struct skcipher_request subreq;
+ struct skcipher_walk walk;
+ int err;
+
+ skcipher_request_set_tfm(&subreq, tfm);
+ skcipher_request_set_callback(&subreq, skcipher_request_flags(req),
+ NULL, NULL);
+
+ if (req->cryptlen <= AES_BLOCK_SIZE) {
+ if (req->cryptlen < AES_BLOCK_SIZE)
+ return -EINVAL;
+ cbc_blocks = 1;
+ }
+
+ if (cbc_blocks > 0) {
+ skcipher_request_set_crypt(&subreq, req->src, req->dst,
+ cbc_blocks * AES_BLOCK_SIZE,
+ req->iv);
+
+ err = skcipher_walk_virt(&walk, &subreq, false) ?:
+ cbc_encrypt_walk(&subreq, &walk);
+ if (err)
+ return err;
+
+ if (req->cryptlen == AES_BLOCK_SIZE)
+ return 0;
+
+ dst = src = scatterwalk_ffwd(sg_src, req->src, subreq.cryptlen);
+ if (req->dst != req->src)
+ dst = scatterwalk_ffwd(sg_dst, req->dst,
+ subreq.cryptlen);
+ }
+
+ /* handle ciphertext stealing */
+ skcipher_request_set_crypt(&subreq, src, dst,
+ req->cryptlen - cbc_blocks * AES_BLOCK_SIZE,
+ req->iv);
+
+ err = skcipher_walk_virt(&walk, &subreq, false);
+ if (err)
+ return err;
+
+ kernel_neon_begin();
+ ce_aes_cbc_cts_encrypt(walk.dst.virt.addr, walk.src.virt.addr,
+ ctx->key_enc, num_rounds(ctx), walk.nbytes,
+ walk.iv);
+ kernel_neon_end();
+
+ return skcipher_walk_done(&walk, 0);
+}
+
+static int cts_cbc_decrypt(struct skcipher_request *req)
+{
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+ struct crypto_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
+ int cbc_blocks = DIV_ROUND_UP(req->cryptlen, AES_BLOCK_SIZE) - 2;
+ struct scatterlist *src = req->src, *dst = req->dst;
+ struct scatterlist sg_src[2], sg_dst[2];
+ struct skcipher_request subreq;
+ struct skcipher_walk walk;
+ int err;
+
+ skcipher_request_set_tfm(&subreq, tfm);
+ skcipher_request_set_callback(&subreq, skcipher_request_flags(req),
+ NULL, NULL);
+
+ if (req->cryptlen <= AES_BLOCK_SIZE) {
+ if (req->cryptlen < AES_BLOCK_SIZE)
+ return -EINVAL;
+ cbc_blocks = 1;
+ }
+
+ if (cbc_blocks > 0) {
+ skcipher_request_set_crypt(&subreq, req->src, req->dst,
+ cbc_blocks * AES_BLOCK_SIZE,
+ req->iv);
+
+ err = skcipher_walk_virt(&walk, &subreq, false) ?:
+ cbc_decrypt_walk(&subreq, &walk);
+ if (err)
+ return err;
+
+ if (req->cryptlen == AES_BLOCK_SIZE)
+ return 0;
+
+ dst = src = scatterwalk_ffwd(sg_src, req->src, subreq.cryptlen);
+ if (req->dst != req->src)
+ dst = scatterwalk_ffwd(sg_dst, req->dst,
+ subreq.cryptlen);
+ }
+
+ /* handle ciphertext stealing */
+ skcipher_request_set_crypt(&subreq, src, dst,
+ req->cryptlen - cbc_blocks * AES_BLOCK_SIZE,
+ req->iv);
+
+ err = skcipher_walk_virt(&walk, &subreq, false);
+ if (err)
+ return err;
+
+ kernel_neon_begin();
+ ce_aes_cbc_cts_decrypt(walk.dst.virt.addr, walk.src.virt.addr,
+ ctx->key_dec, num_rounds(ctx), walk.nbytes,
+ walk.iv);
+ kernel_neon_end();
+
+ return skcipher_walk_done(&walk, 0);
+}
+
+static int ctr_encrypt(struct skcipher_request *req)
+{
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+ struct crypto_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
+ struct skcipher_walk walk;
+ int err, blocks;
+
+ err = skcipher_walk_virt(&walk, req, false);
+
+ while ((blocks = (walk.nbytes / AES_BLOCK_SIZE))) {
+ kernel_neon_begin();
+ ce_aes_ctr_encrypt(walk.dst.virt.addr, walk.src.virt.addr,
+ ctx->key_enc, num_rounds(ctx), blocks,
+ walk.iv);
+ kernel_neon_end();
+ err = skcipher_walk_done(&walk, walk.nbytes % AES_BLOCK_SIZE);
+ }
+ if (walk.nbytes) {
+ u8 __aligned(8) tail[AES_BLOCK_SIZE];
+ unsigned int nbytes = walk.nbytes;
+ u8 *tdst = walk.dst.virt.addr;
+ u8 *tsrc = walk.src.virt.addr;
+
+ /*
+ * Tell aes_ctr_encrypt() to process a tail block.
+ */
+ blocks = -1;
+
+ kernel_neon_begin();
+ ce_aes_ctr_encrypt(tail, NULL, ctx->key_enc, num_rounds(ctx),
+ blocks, walk.iv);
+ kernel_neon_end();
+ crypto_xor_cpy(tdst, tsrc, tail, nbytes);
+ err = skcipher_walk_done(&walk, 0);
+ }
+ return err;
+}
+
+static void ctr_encrypt_one(struct crypto_skcipher *tfm, const u8 *src, u8 *dst)
+{
+ struct crypto_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
+ unsigned long flags;
+
+ /*
+ * Temporarily disable interrupts to avoid races where
+ * cachelines are evicted when the CPU is interrupted
+ * to do something else.
+ */
+ local_irq_save(flags);
+ aes_encrypt(ctx, dst, src);
+ local_irq_restore(flags);
+}
+
+static int ctr_encrypt_sync(struct skcipher_request *req)
+{
+ if (!crypto_simd_usable())
+ return crypto_ctr_encrypt_walk(req, ctr_encrypt_one);
+
+ return ctr_encrypt(req);
+}
+
+static int xts_encrypt(struct skcipher_request *req)
+{
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+ struct crypto_aes_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
+ int err, first, rounds = num_rounds(&ctx->key1);
+ int tail = req->cryptlen % AES_BLOCK_SIZE;
+ struct scatterlist sg_src[2], sg_dst[2];
+ struct skcipher_request subreq;
+ struct scatterlist *src, *dst;
+ struct skcipher_walk walk;
+
+ if (req->cryptlen < AES_BLOCK_SIZE)
+ return -EINVAL;
+
+ err = skcipher_walk_virt(&walk, req, false);
+
+ if (unlikely(tail > 0 && walk.nbytes < walk.total)) {
+ int xts_blocks = DIV_ROUND_UP(req->cryptlen,
+ AES_BLOCK_SIZE) - 2;
+
+ skcipher_walk_abort(&walk);
+
+ skcipher_request_set_tfm(&subreq, tfm);
+ skcipher_request_set_callback(&subreq,
+ skcipher_request_flags(req),
+ NULL, NULL);
+ skcipher_request_set_crypt(&subreq, req->src, req->dst,
+ xts_blocks * AES_BLOCK_SIZE,
+ req->iv);
+ req = &subreq;
+ err = skcipher_walk_virt(&walk, req, false);
+ } else {
+ tail = 0;
+ }
+
+ for (first = 1; walk.nbytes >= AES_BLOCK_SIZE; first = 0) {
+ int nbytes = walk.nbytes;
+
+ if (walk.nbytes < walk.total)
+ nbytes &= ~(AES_BLOCK_SIZE - 1);
+
+ kernel_neon_begin();
+ ce_aes_xts_encrypt(walk.dst.virt.addr, walk.src.virt.addr,
+ ctx->key1.key_enc, rounds, nbytes, walk.iv,
+ ctx->key2.key_enc, first);
+ kernel_neon_end();
+ err = skcipher_walk_done(&walk, walk.nbytes - nbytes);
+ }
+
+ if (err || likely(!tail))
+ return err;
+
+ dst = src = scatterwalk_ffwd(sg_src, req->src, req->cryptlen);
+ if (req->dst != req->src)
+ dst = scatterwalk_ffwd(sg_dst, req->dst, req->cryptlen);
+
+ skcipher_request_set_crypt(req, src, dst, AES_BLOCK_SIZE + tail,
+ req->iv);
+
+ err = skcipher_walk_virt(&walk, req, false);
+ if (err)
+ return err;
+
+ kernel_neon_begin();
+ ce_aes_xts_encrypt(walk.dst.virt.addr, walk.src.virt.addr,
+ ctx->key1.key_enc, rounds, walk.nbytes, walk.iv,
+ ctx->key2.key_enc, first);
+ kernel_neon_end();
+
+ return skcipher_walk_done(&walk, 0);
+}
+
+static int xts_decrypt(struct skcipher_request *req)
+{
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+ struct crypto_aes_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
+ int err, first, rounds = num_rounds(&ctx->key1);
+ int tail = req->cryptlen % AES_BLOCK_SIZE;
+ struct scatterlist sg_src[2], sg_dst[2];
+ struct skcipher_request subreq;
+ struct scatterlist *src, *dst;
+ struct skcipher_walk walk;
+
+ if (req->cryptlen < AES_BLOCK_SIZE)
+ return -EINVAL;
+
+ err = skcipher_walk_virt(&walk, req, false);
+
+ if (unlikely(tail > 0 && walk.nbytes < walk.total)) {
+ int xts_blocks = DIV_ROUND_UP(req->cryptlen,
+ AES_BLOCK_SIZE) - 2;
+
+ skcipher_walk_abort(&walk);
+
+ skcipher_request_set_tfm(&subreq, tfm);
+ skcipher_request_set_callback(&subreq,
+ skcipher_request_flags(req),
+ NULL, NULL);
+ skcipher_request_set_crypt(&subreq, req->src, req->dst,
+ xts_blocks * AES_BLOCK_SIZE,
+ req->iv);
+ req = &subreq;
+ err = skcipher_walk_virt(&walk, req, false);
+ } else {
+ tail = 0;
+ }
+
+ for (first = 1; walk.nbytes >= AES_BLOCK_SIZE; first = 0) {
+ int nbytes = walk.nbytes;
+
+ if (walk.nbytes < walk.total)
+ nbytes &= ~(AES_BLOCK_SIZE - 1);
+
+ kernel_neon_begin();
+ ce_aes_xts_decrypt(walk.dst.virt.addr, walk.src.virt.addr,
+ ctx->key1.key_dec, rounds, nbytes, walk.iv,
+ ctx->key2.key_enc, first);
+ kernel_neon_end();
+ err = skcipher_walk_done(&walk, walk.nbytes - nbytes);
+ }
+
+ if (err || likely(!tail))
+ return err;
+
+ dst = src = scatterwalk_ffwd(sg_src, req->src, req->cryptlen);
+ if (req->dst != req->src)
+ dst = scatterwalk_ffwd(sg_dst, req->dst, req->cryptlen);
+
+ skcipher_request_set_crypt(req, src, dst, AES_BLOCK_SIZE + tail,
+ req->iv);
+
+ err = skcipher_walk_virt(&walk, req, false);
+ if (err)
+ return err;
+
+ kernel_neon_begin();
+ ce_aes_xts_decrypt(walk.dst.virt.addr, walk.src.virt.addr,
+ ctx->key1.key_dec, rounds, walk.nbytes, walk.iv,
+ ctx->key2.key_enc, first);
+ kernel_neon_end();
+
+ return skcipher_walk_done(&walk, 0);
+}
+
+static struct skcipher_alg aes_algs[] = { {
+ .base.cra_name = "__ecb(aes)",
+ .base.cra_driver_name = "__ecb-aes-ce",
+ .base.cra_priority = 300,
+ .base.cra_flags = CRYPTO_ALG_INTERNAL,
+ .base.cra_blocksize = AES_BLOCK_SIZE,
+ .base.cra_ctxsize = sizeof(struct crypto_aes_ctx),
+ .base.cra_module = THIS_MODULE,
+
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .setkey = ce_aes_setkey,
+ .encrypt = ecb_encrypt,
+ .decrypt = ecb_decrypt,
+}, {
+ .base.cra_name = "__cbc(aes)",
+ .base.cra_driver_name = "__cbc-aes-ce",
+ .base.cra_priority = 300,
+ .base.cra_flags = CRYPTO_ALG_INTERNAL,
+ .base.cra_blocksize = AES_BLOCK_SIZE,
+ .base.cra_ctxsize = sizeof(struct crypto_aes_ctx),
+ .base.cra_module = THIS_MODULE,
+
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .ivsize = AES_BLOCK_SIZE,
+ .setkey = ce_aes_setkey,
+ .encrypt = cbc_encrypt,
+ .decrypt = cbc_decrypt,
+}, {
+ .base.cra_name = "__cts(cbc(aes))",
+ .base.cra_driver_name = "__cts-cbc-aes-ce",
+ .base.cra_priority = 300,
+ .base.cra_flags = CRYPTO_ALG_INTERNAL,
+ .base.cra_blocksize = AES_BLOCK_SIZE,
+ .base.cra_ctxsize = sizeof(struct crypto_aes_ctx),
+ .base.cra_module = THIS_MODULE,
+
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .ivsize = AES_BLOCK_SIZE,
+ .walksize = 2 * AES_BLOCK_SIZE,
+ .setkey = ce_aes_setkey,
+ .encrypt = cts_cbc_encrypt,
+ .decrypt = cts_cbc_decrypt,
+}, {
+ .base.cra_name = "__ctr(aes)",
+ .base.cra_driver_name = "__ctr-aes-ce",
+ .base.cra_priority = 300,
+ .base.cra_flags = CRYPTO_ALG_INTERNAL,
+ .base.cra_blocksize = 1,
+ .base.cra_ctxsize = sizeof(struct crypto_aes_ctx),
+ .base.cra_module = THIS_MODULE,
+
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .ivsize = AES_BLOCK_SIZE,
+ .chunksize = AES_BLOCK_SIZE,
+ .setkey = ce_aes_setkey,
+ .encrypt = ctr_encrypt,
+ .decrypt = ctr_encrypt,
+}, {
+ .base.cra_name = "ctr(aes)",
+ .base.cra_driver_name = "ctr-aes-ce-sync",
+ .base.cra_priority = 300 - 1,
+ .base.cra_blocksize = 1,
+ .base.cra_ctxsize = sizeof(struct crypto_aes_ctx),
+ .base.cra_module = THIS_MODULE,
+
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .ivsize = AES_BLOCK_SIZE,
+ .chunksize = AES_BLOCK_SIZE,
+ .setkey = ce_aes_setkey,
+ .encrypt = ctr_encrypt_sync,
+ .decrypt = ctr_encrypt_sync,
+}, {
+ .base.cra_name = "__xts(aes)",
+ .base.cra_driver_name = "__xts-aes-ce",
+ .base.cra_priority = 300,
+ .base.cra_flags = CRYPTO_ALG_INTERNAL,
+ .base.cra_blocksize = AES_BLOCK_SIZE,
+ .base.cra_ctxsize = sizeof(struct crypto_aes_xts_ctx),
+ .base.cra_module = THIS_MODULE,
+
+ .min_keysize = 2 * AES_MIN_KEY_SIZE,
+ .max_keysize = 2 * AES_MAX_KEY_SIZE,
+ .ivsize = AES_BLOCK_SIZE,
+ .walksize = 2 * AES_BLOCK_SIZE,
+ .setkey = xts_set_key,
+ .encrypt = xts_encrypt,
+ .decrypt = xts_decrypt,
+} };
+
+static struct simd_skcipher_alg *aes_simd_algs[ARRAY_SIZE(aes_algs)];
+
+static void aes_exit(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(aes_simd_algs) && aes_simd_algs[i]; i++)
+ simd_skcipher_free(aes_simd_algs[i]);
+
+ crypto_unregister_skciphers(aes_algs, ARRAY_SIZE(aes_algs));
+}
+
+static int __init aes_init(void)
+{
+ struct simd_skcipher_alg *simd;
+ const char *basename;
+ const char *algname;
+ const char *drvname;
+ int err;
+ int i;
+
+ err = crypto_register_skciphers(aes_algs, ARRAY_SIZE(aes_algs));
+ if (err)
+ return err;
+
+ for (i = 0; i < ARRAY_SIZE(aes_algs); i++) {
+ if (!(aes_algs[i].base.cra_flags & CRYPTO_ALG_INTERNAL))
+ continue;
+
+ algname = aes_algs[i].base.cra_name + 2;
+ drvname = aes_algs[i].base.cra_driver_name + 2;
+ basename = aes_algs[i].base.cra_driver_name;
+ simd = simd_skcipher_create_compat(algname, drvname, basename);
+ err = PTR_ERR(simd);
+ if (IS_ERR(simd))
+ goto unregister_simds;
+
+ aes_simd_algs[i] = simd;
+ }
+
+ return 0;
+
+unregister_simds:
+ aes_exit();
+ return err;
+}
+
+module_cpu_feature_match(AES, aes_init);
+module_exit(aes_exit);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-17 22:31:14 +0000