On Sun, 31 Oct 2021, Ard Biesheuvel wrote:

On Fri, 29 Oct 2021 at 16:01, Nicolas Toromanoff
[off-list ref] wrote:

quoted

[...]

@@ -1219,25 +1219,26 @@ static void stm32_cryp_check_ctr_counter(struct stm32_cryp *cryp)

        if (unlikely(cryp->last_ctr[3] == 0xFFFFFFFF)) {
                cryp->last_ctr[3] = 0;
-               cryp->last_ctr[2]++;
+               cryp->last_ctr[2] = cpu_to_be32(be32_to_cpu(cryp->last_ctr[2]) + 1);
                if (!cryp->last_ctr[2]) {
-                       cryp->last_ctr[1]++;
+                       cryp->last_ctr[1] = cpu_to_be32(be32_to_cpu(cryp->last_ctr[1]) + 1);
                        if (!cryp->last_ctr[1])
-                               cryp->last_ctr[0]++;
+                               cryp->last_ctr[0] = cpu_to_be32(be32_to_cpu(cryp->last_ctr[0]) + 1);
                }

crypto_inc() ??

Good point, I didn't know/find this function.

Thanks,
Nicolas.

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