C++ (Cpp) cpacf_kmc Beispiele

Beispiel #1

Datei: paes_s390.c Projekt: BWhitten/linux-stable

static int cbc_paes_crypt(struct blkcipher_desc *desc, unsigned long modifier,
			  struct blkcipher_walk *walk)
{
	struct s390_paes_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
	unsigned int nbytes, n, k;
	int ret;
	struct {
		u8 iv[AES_BLOCK_SIZE];
		u8 key[MAXPROTKEYSIZE];
	} param;

	ret = blkcipher_walk_virt(desc, walk);
	memcpy(param.iv, walk->iv, AES_BLOCK_SIZE);
	memcpy(param.key, ctx->pk.protkey, MAXPROTKEYSIZE);
	while ((nbytes = walk->nbytes) >= AES_BLOCK_SIZE) {
		/* only use complete blocks */
		n = nbytes & ~(AES_BLOCK_SIZE - 1);
		k = cpacf_kmc(ctx->fc | modifier, &param,
			      walk->dst.virt.addr, walk->src.virt.addr, n);
		if (k)
			ret = blkcipher_walk_done(desc, walk, nbytes - k);
		if (n < k) {
			if (__cbc_paes_set_key(ctx) != 0)
				return blkcipher_walk_done(desc, walk, -EIO);
			memcpy(param.key, ctx->pk.protkey, MAXPROTKEYSIZE);
		}
	}
	memcpy(walk->iv, param.iv, AES_BLOCK_SIZE);
	return ret;
}

Beispiel #2

Datei: des_s390.c Projekt: KutuSystems/kutu_linux

static int cbc_desall_crypt(struct blkcipher_desc *desc, unsigned long fc,
			    struct blkcipher_walk *walk)
{
	struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
	unsigned int nbytes, n;
	int ret;
	struct {
		u8 iv[DES_BLOCK_SIZE];
		u8 key[DES3_KEY_SIZE];
	} param;

	ret = blkcipher_walk_virt(desc, walk);
	memcpy(param.iv, walk->iv, DES_BLOCK_SIZE);
	memcpy(param.key, ctx->key, DES3_KEY_SIZE);
	while ((nbytes = walk->nbytes) >= DES_BLOCK_SIZE) {
		/* only use complete blocks */
		n = nbytes & ~(DES_BLOCK_SIZE - 1);
		cpacf_kmc(fc, &param, walk->dst.virt.addr,
			  walk->src.virt.addr, n);
		ret = blkcipher_walk_done(desc, walk, nbytes - n);
	}
	memcpy(walk->iv, param.iv, DES_BLOCK_SIZE);
	return ret;
}