Call KM[C] only with a multiple of block size. Check return value of KM[C]
instructions and complain about erros
Signed-off-by: Jan Glauber <jan.glauber@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
const u8 *in, unsigned int nbytes)
{
struct s390_aes_ctx *sctx = crypto_tfm_ctx(desc->tfm);
const u8 *in, unsigned int nbytes)
{
struct s390_aes_ctx *sctx = crypto_tfm_ctx(desc->tfm);
+ int ret;
+
+ /* only use complete blocks */
+ nbytes &= ~(AES_BLOCK_SIZE - 1);
switch (sctx->key_len) {
case 16:
switch (sctx->key_len) {
case 16:
- crypt_s390_km(KM_AES_128_ENCRYPT, &sctx->key, out, in, nbytes);
+ ret = crypt_s390_km(KM_AES_128_ENCRYPT, &sctx->key, out, in, nbytes);
+ BUG_ON((ret < 0) || (ret != nbytes));
- crypt_s390_km(KM_AES_192_ENCRYPT, &sctx->key, out, in, nbytes);
+ ret = crypt_s390_km(KM_AES_192_ENCRYPT, &sctx->key, out, in, nbytes);
+ BUG_ON((ret < 0) || (ret != nbytes));
- crypt_s390_km(KM_AES_256_ENCRYPT, &sctx->key, out, in, nbytes);
+ ret = crypt_s390_km(KM_AES_256_ENCRYPT, &sctx->key, out, in, nbytes);
+ BUG_ON((ret < 0) || (ret != nbytes));
- return nbytes & ~(AES_BLOCK_SIZE - 1);
}
static unsigned int aes_decrypt_ecb(const struct cipher_desc *desc, u8 *out,
const u8 *in, unsigned int nbytes)
{
struct s390_aes_ctx *sctx = crypto_tfm_ctx(desc->tfm);
}
static unsigned int aes_decrypt_ecb(const struct cipher_desc *desc, u8 *out,
const u8 *in, unsigned int nbytes)
{
struct s390_aes_ctx *sctx = crypto_tfm_ctx(desc->tfm);
+ int ret;
+
+ /* only use complete blocks */
+ nbytes &= ~(AES_BLOCK_SIZE - 1);
switch (sctx->key_len) {
case 16:
switch (sctx->key_len) {
case 16:
- crypt_s390_km(KM_AES_128_DECRYPT, &sctx->key, out, in, nbytes);
+ ret = crypt_s390_km(KM_AES_128_DECRYPT, &sctx->key, out, in, nbytes);
+ BUG_ON((ret < 0) || (ret != nbytes));
- crypt_s390_km(KM_AES_192_DECRYPT, &sctx->key, out, in, nbytes);
+ ret = crypt_s390_km(KM_AES_192_DECRYPT, &sctx->key, out, in, nbytes);
+ BUG_ON((ret < 0) || (ret != nbytes));
- crypt_s390_km(KM_AES_256_DECRYPT, &sctx->key, out, in, nbytes);
+ ret = crypt_s390_km(KM_AES_256_DECRYPT, &sctx->key, out, in, nbytes);
+ BUG_ON((ret < 0) || (ret != nbytes));
- return nbytes & ~(AES_BLOCK_SIZE - 1);
}
static unsigned int aes_encrypt_cbc(const struct cipher_desc *desc, u8 *out,
const u8 *in, unsigned int nbytes)
{
struct s390_aes_ctx *sctx = crypto_tfm_ctx(desc->tfm);
}
static unsigned int aes_encrypt_cbc(const struct cipher_desc *desc, u8 *out,
const u8 *in, unsigned int nbytes)
{
struct s390_aes_ctx *sctx = crypto_tfm_ctx(desc->tfm);
+ int ret;
+
+ /* only use complete blocks */
+ nbytes &= ~(AES_BLOCK_SIZE - 1);
memcpy(&sctx->iv, desc->info, AES_BLOCK_SIZE);
switch (sctx->key_len) {
case 16:
memcpy(&sctx->iv, desc->info, AES_BLOCK_SIZE);
switch (sctx->key_len) {
case 16:
- crypt_s390_kmc(KMC_AES_128_ENCRYPT, &sctx->iv, out, in, nbytes);
+ ret = crypt_s390_kmc(KMC_AES_128_ENCRYPT, &sctx->iv, out, in, nbytes);
+ BUG_ON((ret < 0) || (ret != nbytes));
- crypt_s390_kmc(KMC_AES_192_ENCRYPT, &sctx->iv, out, in, nbytes);
+ ret = crypt_s390_kmc(KMC_AES_192_ENCRYPT, &sctx->iv, out, in, nbytes);
+ BUG_ON((ret < 0) || (ret != nbytes));
- crypt_s390_kmc(KMC_AES_256_ENCRYPT, &sctx->iv, out, in, nbytes);
+ ret = crypt_s390_kmc(KMC_AES_256_ENCRYPT, &sctx->iv, out, in, nbytes);
+ BUG_ON((ret < 0) || (ret != nbytes));
break;
}
memcpy(desc->info, &sctx->iv, AES_BLOCK_SIZE);
break;
}
memcpy(desc->info, &sctx->iv, AES_BLOCK_SIZE);
- return nbytes & ~(AES_BLOCK_SIZE - 1);
}
static unsigned int aes_decrypt_cbc(const struct cipher_desc *desc, u8 *out,
const u8 *in, unsigned int nbytes)
{
struct s390_aes_ctx *sctx = crypto_tfm_ctx(desc->tfm);
}
static unsigned int aes_decrypt_cbc(const struct cipher_desc *desc, u8 *out,
const u8 *in, unsigned int nbytes)
{
struct s390_aes_ctx *sctx = crypto_tfm_ctx(desc->tfm);
+ int ret;
+
+ /* only use complete blocks */
+ nbytes &= ~(AES_BLOCK_SIZE - 1);
memcpy(&sctx->iv, desc->info, AES_BLOCK_SIZE);
switch (sctx->key_len) {
case 16:
memcpy(&sctx->iv, desc->info, AES_BLOCK_SIZE);
switch (sctx->key_len) {
case 16:
- crypt_s390_kmc(KMC_AES_128_DECRYPT, &sctx->iv, out, in, nbytes);
+ ret = crypt_s390_kmc(KMC_AES_128_DECRYPT, &sctx->iv, out, in, nbytes);
+ BUG_ON((ret < 0) || (ret != nbytes));
- crypt_s390_kmc(KMC_AES_192_DECRYPT, &sctx->iv, out, in, nbytes);
+ ret = crypt_s390_kmc(KMC_AES_192_DECRYPT, &sctx->iv, out, in, nbytes);
+ BUG_ON((ret < 0) || (ret != nbytes));
- crypt_s390_kmc(KMC_AES_256_DECRYPT, &sctx->iv, out, in, nbytes);
+ ret = crypt_s390_kmc(KMC_AES_256_DECRYPT, &sctx->iv, out, in, nbytes);
+ BUG_ON((ret < 0) || (ret != nbytes));
- return nbytes & ~(AES_BLOCK_SIZE - 1);