On Mon, 30 Dec 2019 at 11:10, Richard van Schagen <vschagen@xxxxxx> wrote: > > I am writing a module for the EIP93 crypto engine. From what I have > been reading on this mailing list, the driver should return the updated > IV in order for the caller to “resume” or “continue” with this IV in > another call. > > A code-snippet: > > int ivsize = crypto_skcipher_ivsize(skcipher); > > If (ivsize) > memcpy(req->iv, rctx->lastiv, ivsize); > > Where rctx->lastiv was read from the hardware itself. > > The fail message I am getting is: > [ 57.290000] alg: skcipher: changed 'req->iv' > [ 57.370000] alg: skcipher: eip93-cbc-aes encryption co > rrupted request struct on test vector 0, cfg="in-place" > [ 57.380000] alg: skcipher: changed 'req->iv' > [ 57.460000] alg: skcipher: eip93-ctr-aes encryption corrupted > request struct on test vector 0, cfg="in-place" > [ 57.470000] alg: skcipher: changed 'req->iv' > [ 57.560000] alg: skcipher: eip93-rfc3686(ctr)-aes encryption > corrupted request struct on test vector 0, cfg="in-place" > [ 57.570000] alg: skcipher: changed 'req->iv’ > > Where/How should I return the new/updated IV ? > Are you sure you are not making req->iv point to a different buffer?
