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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
commitf4cdf7ca9a1fdcca413157df19753f388a5a224e (patch)
tree60a31895b2446cd7fa27514e8c2843534a0de0da /include/crypto/internal/rsa.h
downloadlinux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.tar.gz
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Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ...
Diffstat (limited to 'include/crypto/internal/rsa.h')
-rw-r--r--include/crypto/internal/rsa.h86
1 files changed, 86 insertions, 0 deletions
diff --git a/include/crypto/internal/rsa.h b/include/crypto/internal/rsa.h
new file mode 100644
index 000000000..071a1951b
--- /dev/null
+++ b/include/crypto/internal/rsa.h
@@ -0,0 +1,86 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * RSA internal helpers
+ *
+ * Copyright (c) 2015, Intel Corporation
+ * Authors: Tadeusz Struk <tadeusz.struk@intel.com>
+ */
+#ifndef _RSA_HELPER_
+#define _RSA_HELPER_
+#include <linux/types.h>
+#include <crypto/akcipher.h>
+
+/**
+ * rsa_key - RSA key structure
+ * @n : RSA modulus raw byte stream
+ * @e : RSA public exponent raw byte stream
+ * @d : RSA private exponent raw byte stream
+ * @p : RSA prime factor p of n raw byte stream
+ * @q : RSA prime factor q of n raw byte stream
+ * @dp : RSA exponent d mod (p - 1) raw byte stream
+ * @dq : RSA exponent d mod (q - 1) raw byte stream
+ * @qinv : RSA CRT coefficient q^(-1) mod p raw byte stream
+ * @n_sz : length in bytes of RSA modulus n
+ * @e_sz : length in bytes of RSA public exponent
+ * @d_sz : length in bytes of RSA private exponent
+ * @p_sz : length in bytes of p field
+ * @q_sz : length in bytes of q field
+ * @dp_sz : length in bytes of dp field
+ * @dq_sz : length in bytes of dq field
+ * @qinv_sz : length in bytes of qinv field
+ */
+struct rsa_key {
+ const u8 *n;
+ const u8 *e;
+ const u8 *d;
+ const u8 *p;
+ const u8 *q;
+ const u8 *dp;
+ const u8 *dq;
+ const u8 *qinv;
+ size_t n_sz;
+ size_t e_sz;
+ size_t d_sz;
+ size_t p_sz;
+ size_t q_sz;
+ size_t dp_sz;
+ size_t dq_sz;
+ size_t qinv_sz;
+};
+
+int rsa_parse_pub_key(struct rsa_key *rsa_key, const void *key,
+ unsigned int key_len);
+
+int rsa_parse_priv_key(struct rsa_key *rsa_key, const void *key,
+ unsigned int key_len);
+
+#define RSA_PUB (true)
+#define RSA_PRIV (false)
+
+static inline int rsa_set_key(struct crypto_akcipher *child,
+ unsigned int *key_size, bool is_pubkey,
+ const void *key, unsigned int keylen)
+{
+ int err;
+
+ *key_size = 0;
+
+ if (is_pubkey)
+ err = crypto_akcipher_set_pub_key(child, key, keylen);
+ else
+ err = crypto_akcipher_set_priv_key(child, key, keylen);
+ if (err)
+ return err;
+
+ /* Find out new modulus size from rsa implementation */
+ err = crypto_akcipher_maxsize(child);
+ if (err > PAGE_SIZE)
+ return -ENOTSUPP;
+
+ *key_size = err;
+ return 0;
+}
+
+extern struct crypto_template rsa_pkcs1pad_tmpl;
+extern struct crypto_template rsassa_pkcs1_tmpl;
+#endif