{"id":2183209,"url":"http://patchwork.ozlabs.org/api/patches/2183209/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260112192035.10427-35-ebiggers@kernel.org/","project":{"id":2,"url":"http://patchwork.ozlabs.org/api/projects/2/?format=json","name":"Linux PPC development","link_name":"linuxppc-dev","list_id":"linuxppc-dev.lists.ozlabs.org","list_email":"linuxppc-dev@lists.ozlabs.org","web_url":"https://github.com/linuxppc/wiki/wiki","scm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git","webscm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/","list_archive_url":"https://lore.kernel.org/linuxppc-dev/","list_archive_url_format":"https://lore.kernel.org/linuxppc-dev/{}/","commit_url_format":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}"},"msgid":"<20260112192035.10427-35-ebiggers@kernel.org>","list_archive_url":"https://lore.kernel.org/linuxppc-dev/20260112192035.10427-35-ebiggers@kernel.org/","date":"2026-01-12T19:20:32","name":"[v2,34/35] lib/crypto: aes: Remove old AES en/decryption functions","commit_ref":null,"pull_url":null,"state":"handled-elsewhere","archived":false,"hash":"c55826b7c30b30e53aa04fbd7eb43e2d93774be0","submitter":{"id":74690,"url":"http://patchwork.ozlabs.org/api/people/74690/?format=json","name":"Eric Biggers","email":"ebiggers@kernel.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260112192035.10427-35-ebiggers@kernel.org/mbox/","series":[{"id":488089,"url":"http://patchwork.ozlabs.org/api/series/488089/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=488089","date":"2026-01-12T19:19:58","name":"AES library improvements","version":2,"mbox":"http://patchwork.ozlabs.org/series/488089/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2183209/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2183209/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linuxppc-dev@lists.ozlabs.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=K5lc6/Cx;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=112.213.38.117; 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lists.ozlabs.org;\n dmarc=pass (p=quarantine dis=none) header.from=kernel.org;\n dkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=K5lc6/Cx; dkim-atps=neutral;\n spf=pass (client-ip=172.234.252.31; helo=sea.source.kernel.org;\n envelope-from=ebiggers@kernel.org;\n receiver=lists.ozlabs.org) smtp.mailfrom=kernel.org","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1768245816;\n\tbh=mfz4ZYJt3AWopKXA9rY3STkyUZNi7LKRSY3PzscIMgc=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=K5lc6/CxW55D01F0aZkD+PpuXbQ9StZLbSb19NcR2aqc19iwx8bcvLzBfQ2CKBbZJ\n\t HOlQVgOo0A0p3dcfR9pfL28aHxro8jtR8J1k1gz0siRRVvSHhqV+06riALpifHyreK\n\t +7x4fvIO/pjiW73W7mRwy+SAgN7G6DetbTBuowmpxmOmJCngNDg1+brp3NTQ4Q8ZTq\n\t y9UISG3fG9brsVPgnRsCMacDt1gC4gj+/+tEq0vqu6ly4tFHEkbHQq+JHsoT4TB1id\n\t XF/JhUpiBUqMtw4pXp6qkhYYHUWX7OQX334WULSjKnFEtawqAABSXhB/gGH6fcJUwX\n\t 7BkQZJQJixr1Q==","From":"Eric Biggers ","To":"linux-crypto@vger.kernel.org","Cc":"linux-kernel@vger.kernel.org,\n\tArd Biesheuvel ,\n\t\"Jason A . Donenfeld\" ,\n\tHerbert Xu ,\n\tlinux-arm-kernel@lists.infradead.org,\n\tlinuxppc-dev@lists.ozlabs.org,\n\tlinux-riscv@lists.infradead.org,\n\tlinux-s390@vger.kernel.org,\n\tsparclinux@vger.kernel.org,\n\tx86@kernel.org,\n\tHolger Dengler ,\n\tHarald Freudenberger ,\n\tEric Biggers ","Subject":"[PATCH v2 34/35] lib/crypto: aes: Remove old AES en/decryption\n functions","Date":"Mon, 12 Jan 2026 11:20:32 -0800","Message-ID":"<20260112192035.10427-35-ebiggers@kernel.org>","X-Mailer":"git-send-email 2.52.0","In-Reply-To":"<20260112192035.10427-1-ebiggers@kernel.org>","References":"<20260112192035.10427-1-ebiggers@kernel.org>","X-Mailing-List":"linuxppc-dev@lists.ozlabs.org","List-Id":"","List-Help":"","List-Owner":"","List-Post":"","List-Archive":",\n ","List-Subscribe":",\n ,\n ","List-Unsubscribe":"","Precedence":"list","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","X-Spam-Status":"No, score=-0.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED,\n\tDKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS\n\tautolearn=disabled version=4.0.1 OzLabs 8","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org"},"content":"Now that all callers of the aes_encrypt() and aes_decrypt() type-generic\nmacros are using the new types, remove the old functions.\n\nThen, replace the macro with direct calls to the new functions, dropping\nthe \"_new\" suffix from them.\n\nThis completes the change in the type of the key struct that is passed\nto aes_encrypt() and aes_decrypt().\n\nAcked-by: Ard Biesheuvel \nSigned-off-by: Eric Biggers \n---\n include/crypto/aes.h | 24 ++-------\n lib/crypto/aes.c | 118 +++----------------------------------------\n 2 files changed, 10 insertions(+), 132 deletions(-)","diff":"diff --git a/include/crypto/aes.h b/include/crypto/aes.h\nindex 4cb3c27d1bf5..cbf1cc96db52 100644\n--- a/include/crypto/aes.h\n+++ b/include/crypto/aes.h\n@@ -306,39 +306,23 @@ typedef union {\n * @out: Buffer to store the ciphertext block\n * @in: Buffer containing the plaintext block\n *\n * Context: Any context.\n */\n-#define aes_encrypt(key, out, in) \\\n-\t_Generic((key), \\\n-\t\t struct crypto_aes_ctx *: aes_encrypt_old((const struct crypto_aes_ctx *)(key), (out), (in)), \\\n-\t\t const struct crypto_aes_ctx *: aes_encrypt_old((const struct crypto_aes_ctx *)(key), (out), (in)), \\\n-\t\t struct aes_enckey *: aes_encrypt_new((const struct aes_enckey *)(key), (out), (in)), \\\n-\t\t const struct aes_enckey *: aes_encrypt_new((const struct aes_enckey *)(key), (out), (in)), \\\n-\t\t struct aes_key *: aes_encrypt_new((const struct aes_key *)(key), (out), (in)), \\\n-\t\t const struct aes_key *: aes_encrypt_new((const struct aes_key *)(key), (out), (in)))\n-void aes_encrypt_old(const struct crypto_aes_ctx *ctx, u8 *out, const u8 *in);\n-void aes_encrypt_new(aes_encrypt_arg key, u8 out[at_least AES_BLOCK_SIZE],\n-\t\t const u8 in[at_least AES_BLOCK_SIZE]);\n+void aes_encrypt(aes_encrypt_arg key, u8 out[at_least AES_BLOCK_SIZE],\n+\t\t const u8 in[at_least AES_BLOCK_SIZE]);\n \n /**\n * aes_decrypt() - Decrypt a single AES block\n * @key: The AES key, previously initialized by aes_preparekey()\n * @out: Buffer to store the plaintext block\n * @in: Buffer containing the ciphertext block\n *\n * Context: Any context.\n */\n-#define aes_decrypt(key, out, in) \\\n-\t_Generic((key), \\\n-\t\t struct crypto_aes_ctx *: aes_decrypt_old((const struct crypto_aes_ctx *)(key), (out), (in)), \\\n-\t\t const struct crypto_aes_ctx *: aes_decrypt_old((const struct crypto_aes_ctx *)(key), (out), (in)), \\\n-\t\t struct aes_key *: aes_decrypt_new((const struct aes_key *)(key), (out), (in)), \\\n-\t\t const struct aes_key *: aes_decrypt_new((const struct aes_key *)(key), (out), (in)))\n-void aes_decrypt_old(const struct crypto_aes_ctx *ctx, u8 *out, const u8 *in);\n-void aes_decrypt_new(const struct aes_key *key, u8 out[at_least AES_BLOCK_SIZE],\n-\t\t const u8 in[at_least AES_BLOCK_SIZE]);\n+void aes_decrypt(const struct aes_key *key, u8 out[at_least AES_BLOCK_SIZE],\n+\t\t const u8 in[at_least AES_BLOCK_SIZE]);\n \n extern const u8 crypto_aes_sbox[];\n extern const u8 crypto_aes_inv_sbox[];\n extern const u32 aes_enc_tab[256];\n extern const u32 aes_dec_tab[256];\ndiff --git a/lib/crypto/aes.c b/lib/crypto/aes.c\nindex 88da68dcf5a8..b7ab2d0c4e59 100644\n--- a/lib/crypto/aes.c\n+++ b/lib/crypto/aes.c\n@@ -249,26 +249,10 @@ static u32 inv_mix_columns(u32 x)\n \tu32 y = mul_by_x2(x);\n \n \treturn mix_columns(x ^ y ^ ror32(y, 16));\n }\n \n-static __always_inline u32 subshift(u32 in[], int pos)\n-{\n-\treturn (aes_sbox[in[pos] & 0xff]) ^\n-\t (aes_sbox[(in[(pos + 1) % 4] >> 8) & 0xff] << 8) ^\n-\t (aes_sbox[(in[(pos + 2) % 4] >> 16) & 0xff] << 16) ^\n-\t (aes_sbox[(in[(pos + 3) % 4] >> 24) & 0xff] << 24);\n-}\n-\n-static __always_inline u32 inv_subshift(u32 in[], int pos)\n-{\n-\treturn (aes_inv_sbox[in[pos] & 0xff]) ^\n-\t (aes_inv_sbox[(in[(pos + 3) % 4] >> 8) & 0xff] << 8) ^\n-\t (aes_inv_sbox[(in[(pos + 2) % 4] >> 16) & 0xff] << 16) ^\n-\t (aes_inv_sbox[(in[(pos + 1) % 4] >> 24) & 0xff] << 24);\n-}\n-\n static u32 subw(u32 in)\n {\n \treturn (aes_sbox[in & 0xff]) ^\n \t (aes_sbox[(in >> 8) & 0xff] << 8) ^\n \t (aes_sbox[(in >> 16) & 0xff] << 16) ^\n@@ -343,55 +327,10 @@ int aes_expandkey(struct crypto_aes_ctx *ctx, const u8 *in_key,\n \taes_expandkey_generic(ctx->key_enc, ctx->key_dec, in_key, key_len);\n \treturn 0;\n }\n EXPORT_SYMBOL(aes_expandkey);\n \n-void aes_encrypt_old(const struct crypto_aes_ctx *ctx, u8 *out, const u8 *in)\n-{\n-\tconst u32 *rkp = ctx->key_enc + 4;\n-\tint rounds = 6 + ctx->key_length / 4;\n-\tu32 st0[4], st1[4];\n-\tint round;\n-\n-\tst0[0] = ctx->key_enc[0] ^ get_unaligned_le32(in);\n-\tst0[1] = ctx->key_enc[1] ^ get_unaligned_le32(in + 4);\n-\tst0[2] = ctx->key_enc[2] ^ get_unaligned_le32(in + 8);\n-\tst0[3] = ctx->key_enc[3] ^ get_unaligned_le32(in + 12);\n-\n-\t/*\n-\t * Force the compiler to emit data independent Sbox references,\n-\t * by xoring the input with Sbox values that are known to add up\n-\t * to zero. This pulls the entire Sbox into the D-cache before any\n-\t * data dependent lookups are done.\n-\t */\n-\tst0[0] ^= aes_sbox[ 0] ^ aes_sbox[ 64] ^ aes_sbox[134] ^ aes_sbox[195];\n-\tst0[1] ^= aes_sbox[16] ^ aes_sbox[ 82] ^ aes_sbox[158] ^ aes_sbox[221];\n-\tst0[2] ^= aes_sbox[32] ^ aes_sbox[ 96] ^ aes_sbox[160] ^ aes_sbox[234];\n-\tst0[3] ^= aes_sbox[48] ^ aes_sbox[112] ^ aes_sbox[186] ^ aes_sbox[241];\n-\n-\tfor (round = 0;; round += 2, rkp += 8) {\n-\t\tst1[0] = mix_columns(subshift(st0, 0)) ^ rkp[0];\n-\t\tst1[1] = mix_columns(subshift(st0, 1)) ^ rkp[1];\n-\t\tst1[2] = mix_columns(subshift(st0, 2)) ^ rkp[2];\n-\t\tst1[3] = mix_columns(subshift(st0, 3)) ^ rkp[3];\n-\n-\t\tif (round == rounds - 2)\n-\t\t\tbreak;\n-\n-\t\tst0[0] = mix_columns(subshift(st1, 0)) ^ rkp[4];\n-\t\tst0[1] = mix_columns(subshift(st1, 1)) ^ rkp[5];\n-\t\tst0[2] = mix_columns(subshift(st1, 2)) ^ rkp[6];\n-\t\tst0[3] = mix_columns(subshift(st1, 3)) ^ rkp[7];\n-\t}\n-\n-\tput_unaligned_le32(subshift(st1, 0) ^ rkp[4], out);\n-\tput_unaligned_le32(subshift(st1, 1) ^ rkp[5], out + 4);\n-\tput_unaligned_le32(subshift(st1, 2) ^ rkp[6], out + 8);\n-\tput_unaligned_le32(subshift(st1, 3) ^ rkp[7], out + 12);\n-}\n-EXPORT_SYMBOL(aes_encrypt_old);\n-\n static __always_inline u32 enc_quarterround(const u32 w[4], int i, u32 rk)\n {\n \treturn rk ^ aes_enc_tab[(u8)w[i]] ^\n \t rol32(aes_enc_tab[(u8)(w[(i + 1) % 4] >> 8)], 8) ^\n \t rol32(aes_enc_tab[(u8)(w[(i + 2) % 4] >> 16)], 16) ^\n@@ -496,55 +435,10 @@ static void __maybe_unused aes_decrypt_generic(const u32 inv_rndkeys[],\n \tput_unaligned_le32(declast_quarterround(w, 1, *rkp++), &out[4]);\n \tput_unaligned_le32(declast_quarterround(w, 2, *rkp++), &out[8]);\n \tput_unaligned_le32(declast_quarterround(w, 3, *rkp++), &out[12]);\n }\n \n-void aes_decrypt_old(const struct crypto_aes_ctx *ctx, u8 *out, const u8 *in)\n-{\n-\tconst u32 *rkp = ctx->key_dec + 4;\n-\tint rounds = 6 + ctx->key_length / 4;\n-\tu32 st0[4], st1[4];\n-\tint round;\n-\n-\tst0[0] = ctx->key_dec[0] ^ get_unaligned_le32(in);\n-\tst0[1] = ctx->key_dec[1] ^ get_unaligned_le32(in + 4);\n-\tst0[2] = ctx->key_dec[2] ^ get_unaligned_le32(in + 8);\n-\tst0[3] = ctx->key_dec[3] ^ get_unaligned_le32(in + 12);\n-\n-\t/*\n-\t * Force the compiler to emit data independent Sbox references,\n-\t * by xoring the input with Sbox values that are known to add up\n-\t * to zero. This pulls the entire Sbox into the D-cache before any\n-\t * data dependent lookups are done.\n-\t */\n-\tst0[0] ^= aes_inv_sbox[ 0] ^ aes_inv_sbox[ 64] ^ aes_inv_sbox[129] ^ aes_inv_sbox[200];\n-\tst0[1] ^= aes_inv_sbox[16] ^ aes_inv_sbox[ 83] ^ aes_inv_sbox[150] ^ aes_inv_sbox[212];\n-\tst0[2] ^= aes_inv_sbox[32] ^ aes_inv_sbox[ 96] ^ aes_inv_sbox[160] ^ aes_inv_sbox[236];\n-\tst0[3] ^= aes_inv_sbox[48] ^ aes_inv_sbox[112] ^ aes_inv_sbox[187] ^ aes_inv_sbox[247];\n-\n-\tfor (round = 0;; round += 2, rkp += 8) {\n-\t\tst1[0] = inv_mix_columns(inv_subshift(st0, 0)) ^ rkp[0];\n-\t\tst1[1] = inv_mix_columns(inv_subshift(st0, 1)) ^ rkp[1];\n-\t\tst1[2] = inv_mix_columns(inv_subshift(st0, 2)) ^ rkp[2];\n-\t\tst1[3] = inv_mix_columns(inv_subshift(st0, 3)) ^ rkp[3];\n-\n-\t\tif (round == rounds - 2)\n-\t\t\tbreak;\n-\n-\t\tst0[0] = inv_mix_columns(inv_subshift(st1, 0)) ^ rkp[4];\n-\t\tst0[1] = inv_mix_columns(inv_subshift(st1, 1)) ^ rkp[5];\n-\t\tst0[2] = inv_mix_columns(inv_subshift(st1, 2)) ^ rkp[6];\n-\t\tst0[3] = inv_mix_columns(inv_subshift(st1, 3)) ^ rkp[7];\n-\t}\n-\n-\tput_unaligned_le32(inv_subshift(st1, 0) ^ rkp[4], out);\n-\tput_unaligned_le32(inv_subshift(st1, 1) ^ rkp[5], out + 4);\n-\tput_unaligned_le32(inv_subshift(st1, 2) ^ rkp[6], out + 8);\n-\tput_unaligned_le32(inv_subshift(st1, 3) ^ rkp[7], out + 12);\n-}\n-EXPORT_SYMBOL(aes_decrypt_old);\n-\n /*\n * Note: the aes_prepare*key_* names reflect the fact that the implementation\n * might not actually expand the key. (The s390 code for example doesn't.)\n * Where the key is expanded we use the more specific names aes_expandkey_*.\n *\n@@ -606,23 +500,23 @@ int aes_prepareenckey(struct aes_enckey *key, const u8 *in_key, size_t key_len)\n {\n \treturn __aes_preparekey(key, NULL, in_key, key_len);\n }\n EXPORT_SYMBOL(aes_prepareenckey);\n \n-void aes_encrypt_new(aes_encrypt_arg key, u8 out[AES_BLOCK_SIZE],\n-\t\t const u8 in[AES_BLOCK_SIZE])\n+void aes_encrypt(aes_encrypt_arg key, u8 out[AES_BLOCK_SIZE],\n+\t\t const u8 in[AES_BLOCK_SIZE])\n {\n \taes_encrypt_arch(key.enc_key, out, in);\n }\n-EXPORT_SYMBOL(aes_encrypt_new);\n+EXPORT_SYMBOL(aes_encrypt);\n \n-void aes_decrypt_new(const struct aes_key *key, u8 out[AES_BLOCK_SIZE],\n-\t\t const u8 in[AES_BLOCK_SIZE])\n+void aes_decrypt(const struct aes_key *key, u8 out[AES_BLOCK_SIZE],\n+\t\t const u8 in[AES_BLOCK_SIZE])\n {\n \taes_decrypt_arch(key, out, in);\n }\n-EXPORT_SYMBOL(aes_decrypt_new);\n+EXPORT_SYMBOL(aes_decrypt);\n \n #ifdef aes_mod_init_arch\n static int __init aes_mod_init(void)\n {\n \taes_mod_init_arch();\n","prefixes":["v2","34/35"]}