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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
commitcf9610f9116d55c5a66ef9f1faecacabd93a9322 (patch)
tree757a3d280760c654767631cab5ad8af2d86d1848 /crypto/tea.c
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linux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.zip
Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlgrafted
Pull pin control updates from Linus Walleij: "Core changes: - Use the non-blocking mux_state_try_select() in the generic MUX pin control back-end - Free pin maps on pinctrl_generic_to_map() failure in the core helpers New hardware pin control: - Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC (this is for the low power audio, LPASS = Low Power Audio SubSystem portions) - Upboard support on top of the Intel pin controller - Apple T6030 and T6031 support (just compatible strings) - Samsung Exynos 8855 SoC - Mediatek MT6858 SoC - Rockchip RK3308B and RV1106 SoCs - Airoha EN7523 and AN7563 SoCs Improvements: - Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable - Qualcomm improvements on top of the Qualcomm PDC (power domain controller) irqchip improvements from tglx:s tree - Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups - The NPCM8xx driver has been put into shape fixing many pin and group definitions - Some non-urgent Tegra 264 pin assignments are fixed up - Some non-urgent fixups to Airoha AN7581 and AN7583 registers and pin assignments, missing features etc" * tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits) dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema pinctrl: meson: sync some modify from A4 pinctrl: meson: a4: Add input enable pin configuration pinctrl: realtek: rtd1625: remove unused group name spdif_sel pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13 dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema Revert "Merge branch 'ib-rsk7204' into devel" pinctrl: rockchip: Add RV1106 pinctrl support dt-bindings: pinctrl: rockchip: Add RV1106 compatible pinctrl: rockchip: Decode drive strength in the get function pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable pinctrl: airoha: add support of an7563 SoC dt-bindings: pinctrl: airoha: add support of an7563 pin controller pinctrl: airoha: try to find chip scu node by phandle first pinctrl: airoha: add support of en7523 SoC dt-bindings: pinctrl: airoha: add support of en7523 pin controller pinctrl: airoha: an7583: add support for olt pinmux pinctrl: airoha: an7583: add support for pon_alt pinmux pinctrl: airoha: an7583: add support for npu_uart pinmux dt-bindings: pinctrl: airoha: an7583: add missed features ...
Diffstat (limited to 'crypto/tea.c')
-rw-r--r--crypto/tea.c262
1 files changed, 262 insertions, 0 deletions
diff --git a/crypto/tea.c b/crypto/tea.c
new file mode 100644
index 000000000..7c66efcb5
--- /dev/null
+++ b/crypto/tea.c
@@ -0,0 +1,262 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Cryptographic API.
+ *
+ * TEA, XTEA, and XETA crypto algorithms
+ *
+ * The TEA and Xtended TEA algorithms were developed by David Wheeler
+ * and Roger Needham at the Computer Laboratory of Cambridge University.
+ *
+ * Due to the order of evaluation in XTEA many people have incorrectly
+ * implemented it. XETA (XTEA in the wrong order), exists for
+ * compatibility with these implementations.
+ *
+ * Copyright (c) 2004 Aaron Grothe ajgrothe@yahoo.com
+ */
+
+#include <crypto/algapi.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/mm.h>
+#include <linux/unaligned.h>
+#include <linux/types.h>
+
+#define TEA_KEY_SIZE 16
+#define TEA_BLOCK_SIZE 8
+#define TEA_ROUNDS 32
+#define TEA_DELTA 0x9e3779b9
+
+#define XTEA_KEY_SIZE 16
+#define XTEA_BLOCK_SIZE 8
+#define XTEA_ROUNDS 32
+#define XTEA_DELTA 0x9e3779b9
+
+struct tea_ctx {
+ u32 KEY[4];
+};
+
+struct xtea_ctx {
+ u32 KEY[4];
+};
+
+static int tea_setkey(struct crypto_tfm *tfm, const u8 *in_key,
+ unsigned int key_len)
+{
+ struct tea_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ ctx->KEY[0] = get_unaligned_le32(&in_key[0]);
+ ctx->KEY[1] = get_unaligned_le32(&in_key[4]);
+ ctx->KEY[2] = get_unaligned_le32(&in_key[8]);
+ ctx->KEY[3] = get_unaligned_le32(&in_key[12]);
+
+ return 0;
+
+}
+
+static void tea_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
+{
+ u32 y, z, n, sum = 0;
+ u32 k0, k1, k2, k3;
+ struct tea_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ y = get_unaligned_le32(&src[0]);
+ z = get_unaligned_le32(&src[4]);
+
+ k0 = ctx->KEY[0];
+ k1 = ctx->KEY[1];
+ k2 = ctx->KEY[2];
+ k3 = ctx->KEY[3];
+
+ n = TEA_ROUNDS;
+
+ while (n-- > 0) {
+ sum += TEA_DELTA;
+ y += ((z << 4) + k0) ^ (z + sum) ^ ((z >> 5) + k1);
+ z += ((y << 4) + k2) ^ (y + sum) ^ ((y >> 5) + k3);
+ }
+
+ put_unaligned_le32(y, &dst[0]);
+ put_unaligned_le32(z, &dst[4]);
+}
+
+static void tea_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
+{
+ u32 y, z, n, sum;
+ u32 k0, k1, k2, k3;
+ struct tea_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ y = get_unaligned_le32(&src[0]);
+ z = get_unaligned_le32(&src[4]);
+
+ k0 = ctx->KEY[0];
+ k1 = ctx->KEY[1];
+ k2 = ctx->KEY[2];
+ k3 = ctx->KEY[3];
+
+ sum = TEA_DELTA << 5;
+
+ n = TEA_ROUNDS;
+
+ while (n-- > 0) {
+ z -= ((y << 4) + k2) ^ (y + sum) ^ ((y >> 5) + k3);
+ y -= ((z << 4) + k0) ^ (z + sum) ^ ((z >> 5) + k1);
+ sum -= TEA_DELTA;
+ }
+
+ put_unaligned_le32(y, &dst[0]);
+ put_unaligned_le32(z, &dst[4]);
+}
+
+static int xtea_setkey(struct crypto_tfm *tfm, const u8 *in_key,
+ unsigned int key_len)
+{
+ struct xtea_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ ctx->KEY[0] = get_unaligned_le32(&in_key[0]);
+ ctx->KEY[1] = get_unaligned_le32(&in_key[4]);
+ ctx->KEY[2] = get_unaligned_le32(&in_key[8]);
+ ctx->KEY[3] = get_unaligned_le32(&in_key[12]);
+
+ return 0;
+
+}
+
+static void xtea_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
+{
+ u32 y, z, sum = 0;
+ u32 limit = XTEA_DELTA * XTEA_ROUNDS;
+ struct xtea_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ y = get_unaligned_le32(&src[0]);
+ z = get_unaligned_le32(&src[4]);
+
+ while (sum != limit) {
+ y += ((z << 4 ^ z >> 5) + z) ^ (sum + ctx->KEY[sum&3]);
+ sum += XTEA_DELTA;
+ z += ((y << 4 ^ y >> 5) + y) ^ (sum + ctx->KEY[sum>>11 &3]);
+ }
+
+ put_unaligned_le32(y, &dst[0]);
+ put_unaligned_le32(z, &dst[4]);
+}
+
+static void xtea_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
+{
+ u32 y, z, sum;
+ struct tea_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ y = get_unaligned_le32(&src[0]);
+ z = get_unaligned_le32(&src[4]);
+
+ sum = XTEA_DELTA * XTEA_ROUNDS;
+
+ while (sum) {
+ z -= ((y << 4 ^ y >> 5) + y) ^ (sum + ctx->KEY[sum>>11 & 3]);
+ sum -= XTEA_DELTA;
+ y -= ((z << 4 ^ z >> 5) + z) ^ (sum + ctx->KEY[sum & 3]);
+ }
+
+ put_unaligned_le32(y, &dst[0]);
+ put_unaligned_le32(z, &dst[4]);
+}
+
+
+static void xeta_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
+{
+ u32 y, z, sum = 0;
+ u32 limit = XTEA_DELTA * XTEA_ROUNDS;
+ struct xtea_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ y = get_unaligned_le32(&src[0]);
+ z = get_unaligned_le32(&src[4]);
+
+ while (sum != limit) {
+ y += (z << 4 ^ z >> 5) + (z ^ sum) + ctx->KEY[sum&3];
+ sum += XTEA_DELTA;
+ z += (y << 4 ^ y >> 5) + (y ^ sum) + ctx->KEY[sum>>11 &3];
+ }
+
+ put_unaligned_le32(y, &dst[0]);
+ put_unaligned_le32(z, &dst[4]);
+}
+
+static void xeta_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
+{
+ u32 y, z, sum;
+ struct tea_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ y = get_unaligned_le32(&src[0]);
+ z = get_unaligned_le32(&src[4]);
+
+ sum = XTEA_DELTA * XTEA_ROUNDS;
+
+ while (sum) {
+ z -= (y << 4 ^ y >> 5) + (y ^ sum) + ctx->KEY[sum>>11 & 3];
+ sum -= XTEA_DELTA;
+ y -= (z << 4 ^ z >> 5) + (z ^ sum) + ctx->KEY[sum & 3];
+ }
+
+ put_unaligned_le32(y, &dst[0]);
+ put_unaligned_le32(z, &dst[4]);
+}
+
+static struct crypto_alg tea_algs[3] = { {
+ .cra_name = "tea",
+ .cra_driver_name = "tea-generic",
+ .cra_flags = CRYPTO_ALG_TYPE_CIPHER,
+ .cra_blocksize = TEA_BLOCK_SIZE,
+ .cra_ctxsize = sizeof (struct tea_ctx),
+ .cra_module = THIS_MODULE,
+ .cra_u = { .cipher = {
+ .cia_min_keysize = TEA_KEY_SIZE,
+ .cia_max_keysize = TEA_KEY_SIZE,
+ .cia_setkey = tea_setkey,
+ .cia_encrypt = tea_encrypt,
+ .cia_decrypt = tea_decrypt } }
+}, {
+ .cra_name = "xtea",
+ .cra_driver_name = "xtea-generic",
+ .cra_flags = CRYPTO_ALG_TYPE_CIPHER,
+ .cra_blocksize = XTEA_BLOCK_SIZE,
+ .cra_ctxsize = sizeof (struct xtea_ctx),
+ .cra_module = THIS_MODULE,
+ .cra_u = { .cipher = {
+ .cia_min_keysize = XTEA_KEY_SIZE,
+ .cia_max_keysize = XTEA_KEY_SIZE,
+ .cia_setkey = xtea_setkey,
+ .cia_encrypt = xtea_encrypt,
+ .cia_decrypt = xtea_decrypt } }
+}, {
+ .cra_name = "xeta",
+ .cra_driver_name = "xeta-generic",
+ .cra_flags = CRYPTO_ALG_TYPE_CIPHER,
+ .cra_blocksize = XTEA_BLOCK_SIZE,
+ .cra_ctxsize = sizeof (struct xtea_ctx),
+ .cra_module = THIS_MODULE,
+ .cra_u = { .cipher = {
+ .cia_min_keysize = XTEA_KEY_SIZE,
+ .cia_max_keysize = XTEA_KEY_SIZE,
+ .cia_setkey = xtea_setkey,
+ .cia_encrypt = xeta_encrypt,
+ .cia_decrypt = xeta_decrypt } }
+} };
+
+static int __init tea_mod_init(void)
+{
+ return crypto_register_algs(tea_algs, ARRAY_SIZE(tea_algs));
+}
+
+static void __exit tea_mod_fini(void)
+{
+ crypto_unregister_algs(tea_algs, ARRAY_SIZE(tea_algs));
+}
+
+MODULE_ALIAS_CRYPTO("tea");
+MODULE_ALIAS_CRYPTO("xtea");
+MODULE_ALIAS_CRYPTO("xeta");
+
+module_init(tea_mod_init);
+module_exit(tea_mod_fini);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("TEA, XTEA & XETA Cryptographic Algorithms");