RinCat/RTL88x2BU-Linux-Driver
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Linux 6.18 compat: Drop hmac_sha256 symbol (#277)

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* Linux 6.18 compat: Drop `hmac_sha256` symbol

It looks like it is a backwards compatibility code piece, I could find any
occurence of it outside of the core/crypto/sha256.{c,h} and it looks like
driver uses `hmac_sha256_vector` directly anyway that this function was a
(legacy?) wrapper for.

Signed-off-by: SpacingBat3 <spacingbat3@gmail.com>

* chore: update README.md

Signed-off-by: SpacingBat3 <spacingbat3@gmail.com>

---------

Signed-off-by: SpacingBat3 <spacingbat3@gmail.com>
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SpacingBat3 2025-12-03 07:33:29 +00:00 committed by GitHub
parent 471877314b
commit 825556e195
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3 changed files with 1 additions and 19 deletions
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2
README.md
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@ -1,6 +1,6 @@
# REALTEK RTL88x2B USB Linux Driver
**Current Driver Version**: 5.13.1-30
**Support Kernel**: 2.6.24 ~ 6.15 (with unofficial patches)
**Support Kernel**: 2.6.24 ~ 6.18 (with unofficial patches)
Linux in-tree rtw8822bu driver is a work in progress. Check [this](https://lore.kernel.org/lkml/20220518082318.3898514-1-s.hauer@pengutronix.de/) patchset.

16
core/crypto/sha256.c
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@ -86,19 +86,3 @@ int hmac_sha256_vector(const u8 *key, size_t key_len, size_t num_elem,
_len[1] = SHA256_MAC_LEN;
return sha256_vector(2, _addr, _len, mac);
}
/**
* hmac_sha256 - HMAC-SHA256 over data buffer (RFC 2104)
* @key: Key for HMAC operations
* @key_len: Length of the key in bytes
* @data: Pointers to the data area
* @data_len: Length of the data area
* @mac: Buffer for the hash (32 bytes)
* Returns: 0 on success, -1 on failure
*/
int hmac_sha256(const u8 *key, size_t key_len, const u8 *data,
size_t data_len, u8 *mac)
{
return hmac_sha256_vector(key, key_len, 1, &data, &data_len, mac);
}

2
core/crypto/sha256.h
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@ -13,8 +13,6 @@
int hmac_sha256_vector(const u8 *key, size_t key_len, size_t num_elem,
const u8 *addr[], const size_t *len, u8 *mac);
int hmac_sha256(const u8 *key, size_t key_len, const u8 *data,
size_t data_len, u8 *mac);
int sha256_prf(const u8 *key, size_t key_len, const char *label,
const u8 *data, size_t data_len, u8 *buf, size_t buf_len);
int sha256_prf_bits(const u8 *key, size_t key_len, const char *label,