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20260404-default_rng_bank #13

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20260404-default_rng_bank #13

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16 changes: 15 additions & 1 deletion kernel-src/wolfcrypt_glue.c
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Original file line number Diff line number Diff line change
Expand Up @@ -827,6 +827,12 @@ int wc_linuxkm_drbg_init_ctx(struct wc_rng_bank **ctx) {

#ifdef LINUXKM_LKCAPI_REGISTER_HASH_DRBG_DEFAULT

#ifdef WC_RNG_BANK_DEFAULT_SUPPORT
ret = wc_rng_bank_default_checkout(ctx);

if (ret != 0)
goto new_bank;
#else /* !WC_RNG_BANK_DEFAULT_SUPPORT */
struct crypto_rng *current_crypto_default_rng;

ret = crypto_get_default_rng();
Expand All @@ -846,6 +852,8 @@ int wc_linuxkm_drbg_init_ctx(struct wc_rng_bank **ctx) {
}

*ctx = (struct wc_rng_bank *)crypto_rng_ctx(current_crypto_default_rng);
#endif /* !WC_RNG_BANK_DEFAULT_SUPPORT */

wc_wg_drbg_is_global_default = 1;

return 0;
Expand Down Expand Up @@ -886,9 +894,15 @@ void wc_linuxkm_drbg_ctx_clear(struct wc_rng_bank **ctx) {

#ifdef LINUXKM_LKCAPI_REGISTER_HASH_DRBG_DEFAULT
if (wc_wg_drbg_is_global_default) {
#ifdef WC_RNG_BANK_DEFAULT_SUPPORT
int ret = wc_rng_bank_default_checkin(ctx);
if (ret != 0)
pr_err("ERROR: wc_rng_bank_default_checkin() in wc_linuxkm_drbg_ctx_clear() failed with code %d.\n", ret);
#else /* !WC_RNG_BANK_DEFAULT_SUPPORT */
*ctx = NULL;
wc_wg_drbg_is_global_default = 0;
crypto_put_default_rng();
#endif /* !WC_RNG_BANK_DEFAULT_SUPPORT */
wc_wg_drbg_is_global_default = 0;
}
else
#endif
Expand Down