From 4352b8aee98005853aa63f57d6377282de17a33f Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 23 Aug 2026 13:28:57 -0700 Subject: Merge tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux Pull I3C updates from Alexandre Belloni: "A new driver this cycle, for the AMD AXI I3C controller. There are also new features such as IBI wakeup support, SETAASA device discovery and ACPI support for the the DAA methods, meaning we can now communicate with the SPD devices on DDR5 modules. New driver: - AMD AXI I3C master controller Subsystem: - I3C Common Command Code (CCC) handling improvements, especially around GET CCCs - SETAASA device discovery support - ACPI support for all existing DAA methods like SETDASA, SETNEWDA as well as I2C devices on I3C bus - IBI-based wakeup support Drivers: - dw: SETAASA support - mipi-i3c-hci: advertise IBI wakeup capability, AMD_PT I3C controller support, PIO queue management support for HCI v1.2 - renesas: improve suspend to RAM support, add runtime PM support" * tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: (70 commits) i3c: dw: reduce do_daa time if there's no client i3c: mipi-i3c-hci: Add support for AMD_PT I3C controller i3c: mipi-i3c-hci: Add PIO queue management support for HCI v1.2 i3c: mipi-i3c-hci: Fix missing STAT_IBI_STATUS_THLD in PIO mode i3c: dw: rename "pclk" to "apb" to match dt-binding i3c: dw: make struct dw_i3c_cmd smaller i3c: dw: use COMMAND_PORT_TRANSFER_ARG instead of hardcoding i3c: renesas: Don't register devices when ENTDAA times out i3c: master: dw-i3c-master: fix OD timing for first broadcast i3c: mipi-i3c-hci: Advertise IBI wakeup capability i3c: mipi-i3c-hci: Factor out i3c_hci_sysdev() i3c: mipi-i3c-hci-pci: Propagate I3C wakeup requirements to PCI i3c: master: Reject IBI requests from non-IBI-capable devices i3c: master: Add helper to query bus wakeup requirements i3c: master: Report wakeup events for IBIs i3c: master: Support IBI-based wakeup capability i3c: master: Fix potential UAF in i3c_device_match() i3c: master: Fix potential UAF in i3c_device_uevent() i3c: Make dev->desc locking assumptions explicit i3c: master: Fix use-after-free of master->this ... --- crypto/mldsa.c | 201 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 201 insertions(+) create mode 100644 crypto/mldsa.c (limited to 'crypto/mldsa.c') diff --git a/crypto/mldsa.c b/crypto/mldsa.c new file mode 100644 index 000000000..d8de082cc --- /dev/null +++ b/crypto/mldsa.c @@ -0,0 +1,201 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * crypto_sig wrapper around ML-DSA library. + */ +#include +#include +#include +#include + +struct crypto_mldsa_ctx { + u8 pk[MAX(MAX(MLDSA44_PUBLIC_KEY_SIZE, + MLDSA65_PUBLIC_KEY_SIZE), + MLDSA87_PUBLIC_KEY_SIZE)]; + unsigned int pk_len; + enum mldsa_alg strength; + bool key_set; +}; + +static int crypto_mldsa_sign(struct crypto_sig *tfm, + const void *msg, unsigned int msg_len, + void *sig, unsigned int sig_len) +{ + return -EOPNOTSUPP; +} + +static int crypto_mldsa_verify(struct crypto_sig *tfm, + const void *sig, unsigned int sig_len, + const void *msg, unsigned int msg_len) +{ + const struct crypto_mldsa_ctx *ctx = crypto_sig_ctx(tfm); + + if (unlikely(!ctx->key_set)) + return -EINVAL; + + return mldsa_verify(ctx->strength, sig, sig_len, msg, msg_len, + ctx->pk, ctx->pk_len); +} + +static unsigned int crypto_mldsa_key_size(struct crypto_sig *tfm) +{ + struct crypto_mldsa_ctx *ctx = crypto_sig_ctx(tfm); + + switch (ctx->strength) { + case MLDSA44: + return MLDSA44_PUBLIC_KEY_SIZE; + case MLDSA65: + return MLDSA65_PUBLIC_KEY_SIZE; + case MLDSA87: + return MLDSA87_PUBLIC_KEY_SIZE; + default: + WARN_ON_ONCE(1); + return 0; + } +} + +static int crypto_mldsa_set_pub_key(struct crypto_sig *tfm, + const void *key, unsigned int keylen) +{ + struct crypto_mldsa_ctx *ctx = crypto_sig_ctx(tfm); + unsigned int expected_len = crypto_mldsa_key_size(tfm); + + if (keylen != expected_len) + return -EINVAL; + + ctx->pk_len = keylen; + memcpy(ctx->pk, key, keylen); + ctx->key_set = true; + return 0; +} + +static int crypto_mldsa_set_priv_key(struct crypto_sig *tfm, + const void *key, unsigned int keylen) +{ + return -EOPNOTSUPP; +} + +static unsigned int crypto_mldsa_max_size(struct crypto_sig *tfm) +{ + struct crypto_mldsa_ctx *ctx = crypto_sig_ctx(tfm); + + switch (ctx->strength) { + case MLDSA44: + return MLDSA44_SIGNATURE_SIZE; + case MLDSA65: + return MLDSA65_SIGNATURE_SIZE; + case MLDSA87: + return MLDSA87_SIGNATURE_SIZE; + default: + WARN_ON_ONCE(1); + return 0; + } +} + +static int crypto_mldsa44_alg_init(struct crypto_sig *tfm) +{ + struct crypto_mldsa_ctx *ctx = crypto_sig_ctx(tfm); + + ctx->strength = MLDSA44; + ctx->key_set = false; + return 0; +} + +static int crypto_mldsa65_alg_init(struct crypto_sig *tfm) +{ + struct crypto_mldsa_ctx *ctx = crypto_sig_ctx(tfm); + + ctx->strength = MLDSA65; + ctx->key_set = false; + return 0; +} + +static int crypto_mldsa87_alg_init(struct crypto_sig *tfm) +{ + struct crypto_mldsa_ctx *ctx = crypto_sig_ctx(tfm); + + ctx->strength = MLDSA87; + ctx->key_set = false; + return 0; +} + +static void crypto_mldsa_alg_exit(struct crypto_sig *tfm) +{ +} + +static struct sig_alg crypto_mldsa_algs[] = { + { + .sign = crypto_mldsa_sign, + .verify = crypto_mldsa_verify, + .set_pub_key = crypto_mldsa_set_pub_key, + .set_priv_key = crypto_mldsa_set_priv_key, + .key_size = crypto_mldsa_key_size, + .max_size = crypto_mldsa_max_size, + .init = crypto_mldsa44_alg_init, + .exit = crypto_mldsa_alg_exit, + .base.cra_name = "mldsa44", + .base.cra_driver_name = "mldsa44-lib", + .base.cra_ctxsize = sizeof(struct crypto_mldsa_ctx), + .base.cra_module = THIS_MODULE, + .base.cra_priority = 5000, + }, { + .sign = crypto_mldsa_sign, + .verify = crypto_mldsa_verify, + .set_pub_key = crypto_mldsa_set_pub_key, + .set_priv_key = crypto_mldsa_set_priv_key, + .key_size = crypto_mldsa_key_size, + .max_size = crypto_mldsa_max_size, + .init = crypto_mldsa65_alg_init, + .exit = crypto_mldsa_alg_exit, + .base.cra_name = "mldsa65", + .base.cra_driver_name = "mldsa65-lib", + .base.cra_ctxsize = sizeof(struct crypto_mldsa_ctx), + .base.cra_module = THIS_MODULE, + .base.cra_priority = 5000, + }, { + .sign = crypto_mldsa_sign, + .verify = crypto_mldsa_verify, + .set_pub_key = crypto_mldsa_set_pub_key, + .set_priv_key = crypto_mldsa_set_priv_key, + .key_size = crypto_mldsa_key_size, + .max_size = crypto_mldsa_max_size, + .init = crypto_mldsa87_alg_init, + .exit = crypto_mldsa_alg_exit, + .base.cra_name = "mldsa87", + .base.cra_driver_name = "mldsa87-lib", + .base.cra_ctxsize = sizeof(struct crypto_mldsa_ctx), + .base.cra_module = THIS_MODULE, + .base.cra_priority = 5000, + }, +}; + +static int __init mldsa_init(void) +{ + int ret, i; + + for (i = 0; i < ARRAY_SIZE(crypto_mldsa_algs); i++) { + ret = crypto_register_sig(&crypto_mldsa_algs[i]); + if (ret < 0) + goto error; + } + return 0; + +error: + pr_err("Failed to register (%d)\n", ret); + for (i--; i >= 0; i--) + crypto_unregister_sig(&crypto_mldsa_algs[i]); + return ret; +} +module_init(mldsa_init); + +static void mldsa_exit(void) +{ + for (int i = 0; i < ARRAY_SIZE(crypto_mldsa_algs); i++) + crypto_unregister_sig(&crypto_mldsa_algs[i]); +} +module_exit(mldsa_exit); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Crypto API support for ML-DSA signature verification"); +MODULE_ALIAS_CRYPTO("mldsa44"); +MODULE_ALIAS_CRYPTO("mldsa65"); +MODULE_ALIAS_CRYPTO("mldsa87"); -- cgit v1.3.1