HMAC_SHA224_KEY
hmac_sha224_preparekey(HMAC_SHA224_KEY(tfm), raw_key, keylen);
hmac_sha224_init(HMAC_SHA224_CTX(desc), HMAC_SHA224_KEY(desc->tfm));
hmac_sha224(HMAC_SHA224_KEY(desc->tfm), data, len, out);
ctx->ctx.ostate = HMAC_SHA224_KEY(desc->tfm)->key.ostate;
ctx->ctx.ostate = HMAC_SHA224_KEY(desc->tfm)->key.ostate;