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linuxkm/lkcapi_rsa_glue.c: update version threshold for the v6.16 change in crypto_sig_*size() semantics, now backported to 6.15.3.

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Daniel Pouzzner
2025-07-02 09:56:47 -05:00
parent f0662e0578
commit 6275f1f7e6
1 changed files with 9 additions and 9 deletions
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18
linuxkm/lkcapi_rsa_glue.c
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@@ -1255,8 +1255,8 @@ pkcs1pad_verify_out:
#else
/* Returns the rsa key size:
* linux kernel version < 6.16: returns key size in bytes.
* linux kernel version >= 6.16: returns key size in bits.
* linux kernel version < 6.15.3: returns key size in bytes.
* linux kernel version >= 6.15.3: returns key size in bits.
* */
static unsigned int km_pkcs1_key_size(struct crypto_sig *tfm)
{
@@ -1264,11 +1264,11 @@ static unsigned int km_pkcs1_key_size(struct crypto_sig *tfm)
ctx = crypto_sig_ctx(tfm);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 16, 0)
#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 15, 3)
return (unsigned int) ctx->key_len * WOLFSSL_BIT_SIZE;
#else
return (unsigned int) ctx->key_len;
#endif /* linux >= 6.16 */
#endif /* linux >= 6.15.3 */
}
/*
@@ -3093,16 +3093,16 @@ static int linuxkm_test_pkcs1_driver(const char * driver, int nbits,
{
/* The behavior of crypto_sig_Xsize (X= max, key, digest) changed
* at linux kernel v6.16:
* < 6.16: all three should return the same value (in bytes).
* >= 6.16: keysize is in bits, maxsize and digestsize in bytes. */
* at linux kernel v6.15.3:
* < 6.15.3: all three should return the same value (in bytes).
* >= 6.15.3: keysize is in bits, maxsize and digestsize in bytes. */
unsigned int maxsize = crypto_sig_maxsize(tfm);
unsigned int keysize = crypto_sig_keysize(tfm);
unsigned int digestsize = crypto_sig_digestsize(tfm);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 16, 0)
#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 15, 3)
keysize = ((keysize + WOLFSSL_BIT_SIZE - 1) / WOLFSSL_BIT_SIZE);
#endif /* linux >= 6.16 */
#endif /* linux >= 6.15.3 */
#ifdef WOLFKM_DEBUG_RSA
pr_info("info: crypto_sig_{max, key, digest}size: "