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Diffstat (limited to 'arch/arm64/crypto/sm4-ce-glue.c')
-rw-r--r--arch/arm64/crypto/sm4-ce-glue.c108
1 files changed, 1 insertions, 107 deletions
diff --git a/arch/arm64/crypto/sm4-ce-glue.c b/arch/arm64/crypto/sm4-ce-glue.c
index 0a2d32ed3b..43741bed87 100644
--- a/arch/arm64/crypto/sm4-ce-glue.c
+++ b/arch/arm64/crypto/sm4-ce-glue.c
@@ -37,10 +37,6 @@ asmlinkage void sm4_ce_cbc_cts_enc(const u32 *rkey, u8 *dst, const u8 *src,
u8 *iv, unsigned int nbytes);
asmlinkage void sm4_ce_cbc_cts_dec(const u32 *rkey, u8 *dst, const u8 *src,
u8 *iv, unsigned int nbytes);
-asmlinkage void sm4_ce_cfb_enc(const u32 *rkey, u8 *dst, const u8 *src,
- u8 *iv, unsigned int nblks);
-asmlinkage void sm4_ce_cfb_dec(const u32 *rkey, u8 *dst, const u8 *src,
- u8 *iv, unsigned int nblks);
asmlinkage void sm4_ce_ctr_enc(const u32 *rkey, u8 *dst, const u8 *src,
u8 *iv, unsigned int nblks);
asmlinkage void sm4_ce_xts_enc(const u32 *rkey1, u8 *dst, const u8 *src,
@@ -56,7 +52,6 @@ asmlinkage void sm4_ce_mac_update(const u32 *rkey_enc, u8 *digest,
EXPORT_SYMBOL(sm4_ce_expand_key);
EXPORT_SYMBOL(sm4_ce_crypt_block);
EXPORT_SYMBOL(sm4_ce_cbc_enc);
-EXPORT_SYMBOL(sm4_ce_cfb_enc);
struct sm4_xts_ctx {
struct sm4_ctx key1;
@@ -280,90 +275,6 @@ static int sm4_cbc_cts_decrypt(struct skcipher_request *req)
return sm4_cbc_cts_crypt(req, false);
}
-static int sm4_cfb_encrypt(struct skcipher_request *req)
-{
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- struct sm4_ctx *ctx = crypto_skcipher_ctx(tfm);
- struct skcipher_walk walk;
- unsigned int nbytes;
- int err;
-
- err = skcipher_walk_virt(&walk, req, false);
-
- while ((nbytes = walk.nbytes) > 0) {
- const u8 *src = walk.src.virt.addr;
- u8 *dst = walk.dst.virt.addr;
- unsigned int nblks;
-
- kernel_neon_begin();
-
- nblks = BYTES2BLKS(nbytes);
- if (nblks) {
- sm4_ce_cfb_enc(ctx->rkey_enc, dst, src, walk.iv, nblks);
- dst += nblks * SM4_BLOCK_SIZE;
- src += nblks * SM4_BLOCK_SIZE;
- nbytes -= nblks * SM4_BLOCK_SIZE;
- }
-
- /* tail */
- if (walk.nbytes == walk.total && nbytes > 0) {
- u8 keystream[SM4_BLOCK_SIZE];
-
- sm4_ce_crypt_block(ctx->rkey_enc, keystream, walk.iv);
- crypto_xor_cpy(dst, src, keystream, nbytes);
- nbytes = 0;
- }
-
- kernel_neon_end();
-
- err = skcipher_walk_done(&walk, nbytes);
- }
-
- return err;
-}
-
-static int sm4_cfb_decrypt(struct skcipher_request *req)
-{
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- struct sm4_ctx *ctx = crypto_skcipher_ctx(tfm);
- struct skcipher_walk walk;
- unsigned int nbytes;
- int err;
-
- err = skcipher_walk_virt(&walk, req, false);
-
- while ((nbytes = walk.nbytes) > 0) {
- const u8 *src = walk.src.virt.addr;
- u8 *dst = walk.dst.virt.addr;
- unsigned int nblks;
-
- kernel_neon_begin();
-
- nblks = BYTES2BLKS(nbytes);
- if (nblks) {
- sm4_ce_cfb_dec(ctx->rkey_enc, dst, src, walk.iv, nblks);
- dst += nblks * SM4_BLOCK_SIZE;
- src += nblks * SM4_BLOCK_SIZE;
- nbytes -= nblks * SM4_BLOCK_SIZE;
- }
-
- /* tail */
- if (walk.nbytes == walk.total && nbytes > 0) {
- u8 keystream[SM4_BLOCK_SIZE];
-
- sm4_ce_crypt_block(ctx->rkey_enc, keystream, walk.iv);
- crypto_xor_cpy(dst, src, keystream, nbytes);
- nbytes = 0;
- }
-
- kernel_neon_end();
-
- err = skcipher_walk_done(&walk, nbytes);
- }
-
- return err;
-}
-
static int sm4_ctr_crypt(struct skcipher_request *req)
{
struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
@@ -544,22 +455,6 @@ static struct skcipher_alg sm4_algs[] = {
.decrypt = sm4_cbc_decrypt,
}, {
.base = {
- .cra_name = "cfb(sm4)",
- .cra_driver_name = "cfb-sm4-ce",
- .cra_priority = 400,
- .cra_blocksize = 1,
- .cra_ctxsize = sizeof(struct sm4_ctx),
- .cra_module = THIS_MODULE,
- },
- .min_keysize = SM4_KEY_SIZE,
- .max_keysize = SM4_KEY_SIZE,
- .ivsize = SM4_BLOCK_SIZE,
- .chunksize = SM4_BLOCK_SIZE,
- .setkey = sm4_setkey,
- .encrypt = sm4_cfb_encrypt,
- .decrypt = sm4_cfb_decrypt,
- }, {
- .base = {
.cra_name = "ctr(sm4)",
.cra_driver_name = "ctr-sm4-ce",
.cra_priority = 400,
@@ -869,12 +764,11 @@ static void __exit sm4_exit(void)
module_cpu_feature_match(SM4, sm4_init);
module_exit(sm4_exit);
-MODULE_DESCRIPTION("SM4 ECB/CBC/CFB/CTR/XTS using ARMv8 Crypto Extensions");
+MODULE_DESCRIPTION("SM4 ECB/CBC/CTR/XTS using ARMv8 Crypto Extensions");
MODULE_ALIAS_CRYPTO("sm4-ce");
MODULE_ALIAS_CRYPTO("sm4");
MODULE_ALIAS_CRYPTO("ecb(sm4)");
MODULE_ALIAS_CRYPTO("cbc(sm4)");
-MODULE_ALIAS_CRYPTO("cfb(sm4)");
MODULE_ALIAS_CRYPTO("ctr(sm4)");
MODULE_ALIAS_CRYPTO("cts(cbc(sm4))");
MODULE_ALIAS_CRYPTO("xts(sm4)");