From f4cdf7ca9a1fdcca413157df19753f388a5a224e Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 19 Aug 2026 10:09:22 -0700 Subject: Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 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 ... --- include/crypto/md5.h | 210 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 210 insertions(+) create mode 100644 include/crypto/md5.h (limited to 'include/crypto/md5.h') diff --git a/include/crypto/md5.h b/include/crypto/md5.h new file mode 100644 index 000000000..c47aedfe6 --- /dev/null +++ b/include/crypto/md5.h @@ -0,0 +1,210 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _CRYPTO_MD5_H +#define _CRYPTO_MD5_H + +#include +#include + +#define MD5_DIGEST_SIZE 16 +#define MD5_HMAC_BLOCK_SIZE 64 +#define MD5_BLOCK_SIZE 64 +#define MD5_BLOCK_WORDS 16 +#define MD5_HASH_WORDS 4 +#define MD5_STATE_SIZE 24 + +#define MD5_H0 0x67452301UL +#define MD5_H1 0xefcdab89UL +#define MD5_H2 0x98badcfeUL +#define MD5_H3 0x10325476UL + +#define CRYPTO_MD5_STATESIZE \ + CRYPTO_HASH_STATESIZE(MD5_STATE_SIZE, MD5_HMAC_BLOCK_SIZE) + +extern const u8 md5_zero_message_hash[MD5_DIGEST_SIZE]; + +struct md5_state { + u32 hash[MD5_HASH_WORDS]; + u64 byte_count; + u32 block[MD5_BLOCK_WORDS]; +}; + +/* State for the MD5 compression function */ +struct md5_block_state { + u32 h[MD5_HASH_WORDS]; +}; + +/** + * struct md5_ctx - Context for hashing a message with MD5 + * @state: the compression function state + * @bytecount: number of bytes processed so far + * @buf: partial block buffer; bytecount % MD5_BLOCK_SIZE bytes are valid + */ +struct md5_ctx { + struct md5_block_state state; + u64 bytecount; + u8 buf[MD5_BLOCK_SIZE] __aligned(__alignof__(__le64)); +}; + +/** + * md5_init() - Initialize an MD5 context for a new message + * @ctx: the context to initialize + * + * If you don't need incremental computation, consider md5() instead. + * + * Context: Any context. + */ +void md5_init(struct md5_ctx *ctx); + +/** + * md5_update() - Update an MD5 context with message data + * @ctx: the context to update; must have been initialized + * @data: the message data + * @len: the data length in bytes + * + * This can be called any number of times. + * + * Context: Any context. + */ +void md5_update(struct md5_ctx *ctx, const u8 *data, size_t len); + +/** + * md5_final() - Finish computing an MD5 message digest + * @ctx: the context to finalize; must have been initialized + * @out: (output) the resulting MD5 message digest + * + * After finishing, this zeroizes @ctx. So the caller does not need to do it. + * + * Context: Any context. + */ +void md5_final(struct md5_ctx *ctx, u8 out[at_least MD5_DIGEST_SIZE]); + +/** + * md5() - Compute MD5 message digest in one shot + * @data: the message data + * @len: the data length in bytes + * @out: (output) the resulting MD5 message digest + * + * Context: Any context. + */ +void md5(const u8 *data, size_t len, u8 out[at_least MD5_DIGEST_SIZE]); + +/** + * struct hmac_md5_key - Prepared key for HMAC-MD5 + * @istate: private + * @ostate: private + */ +struct hmac_md5_key { + struct md5_block_state istate; + struct md5_block_state ostate; +}; + +/** + * struct hmac_md5_ctx - Context for computing HMAC-MD5 of a message + * @hash_ctx: private + * @ostate: private + */ +struct hmac_md5_ctx { + struct md5_ctx hash_ctx; + struct md5_block_state ostate; +}; + +/** + * hmac_md5_preparekey() - Prepare a key for HMAC-MD5 + * @key: (output) the key structure to initialize + * @raw_key: the raw HMAC-MD5 key + * @raw_key_len: the key length in bytes. All key lengths are supported. + * + * Note: the caller is responsible for zeroizing both the struct hmac_md5_key + * and the raw key once they are no longer needed. + * + * Context: Any context. + */ +void hmac_md5_preparekey(struct hmac_md5_key *key, + const u8 *raw_key, size_t raw_key_len); + +/** + * hmac_md5_init() - Initialize an HMAC-MD5 context for a new message + * @ctx: (output) the HMAC context to initialize + * @key: the prepared HMAC key + * + * If you don't need incremental computation, consider hmac_md5() instead. + * + * Context: Any context. + */ +void hmac_md5_init(struct hmac_md5_ctx *ctx, const struct hmac_md5_key *key); + +/** + * hmac_md5_init_usingrawkey() - Initialize an HMAC-MD5 context for a new + * message, using a raw key + * @ctx: (output) the HMAC context to initialize + * @raw_key: the raw HMAC-MD5 key + * @raw_key_len: the key length in bytes. All key lengths are supported. + * + * If you don't need incremental computation, consider hmac_md5_usingrawkey() + * instead. + * + * Context: Any context. + */ +void hmac_md5_init_usingrawkey(struct hmac_md5_ctx *ctx, + const u8 *raw_key, size_t raw_key_len); + +/** + * hmac_md5_update() - Update an HMAC-MD5 context with message data + * @ctx: the HMAC context to update; must have been initialized + * @data: the message data + * @data_len: the data length in bytes + * + * This can be called any number of times. + * + * Context: Any context. + */ +static inline void hmac_md5_update(struct hmac_md5_ctx *ctx, + const u8 *data, size_t data_len) +{ + md5_update(&ctx->hash_ctx, data, data_len); +} + +/** + * hmac_md5_final() - Finish computing an HMAC-MD5 value + * @ctx: the HMAC context to finalize; must have been initialized + * @out: (output) the resulting HMAC-MD5 value + * + * After finishing, this zeroizes @ctx. So the caller does not need to do it. + * + * Context: Any context. + */ +void hmac_md5_final(struct hmac_md5_ctx *ctx, u8 out[at_least MD5_DIGEST_SIZE]); + +/** + * hmac_md5() - Compute HMAC-MD5 in one shot, using a prepared key + * @key: the prepared HMAC key + * @data: the message data + * @data_len: the data length in bytes + * @out: (output) the resulting HMAC-MD5 value + * + * If you're using the key only once, consider using hmac_md5_usingrawkey(). + * + * Context: Any context. + */ +void hmac_md5(const struct hmac_md5_key *key, + const u8 *data, size_t data_len, + u8 out[at_least MD5_DIGEST_SIZE]); + +/** + * hmac_md5_usingrawkey() - Compute HMAC-MD5 in one shot, using a raw key + * @raw_key: the raw HMAC-MD5 key + * @raw_key_len: the key length in bytes. All key lengths are supported. + * @data: the message data + * @data_len: the data length in bytes + * @out: (output) the resulting HMAC-MD5 value + * + * If you're using the key multiple times, prefer to use hmac_md5_preparekey() + * followed by multiple calls to hmac_md5() instead. + * + * Context: Any context. + */ +void hmac_md5_usingrawkey(const u8 *raw_key, size_t raw_key_len, + const u8 *data, size_t data_len, + u8 out[at_least MD5_DIGEST_SIZE]); + +#endif /* _CRYPTO_MD5_H */ -- cgit v1.3.1