diff options
| author | Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com> | 2015-09-04 09:57:24 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-10-14 14:31:59 +0200 |
| commit | 1330a1258dc20caa5961b07aa62482793d6f2ecf (patch) | |
| tree | dddc2a4438dc63b69ab1aad5d411032b4a206f5a /drivers/s390/crypto/zcrypt_cca_key.h | |
| parent | b02064a9b8134e1aac4e891abf72139ca0b126ee (diff) | |
| download | lwn-1330a1258dc20caa5961b07aa62482793d6f2ecf.tar.gz lwn-1330a1258dc20caa5961b07aa62482793d6f2ecf.zip | |
s390/zcrypt: enable odd RSA modulus sizes in CRT format
In the past only even modulus sizes were allowed for RSA keys in
CRT format. This restriction was based on limited RSA key generation
on older crypto adapters that provides only even modulus sizes. This
restriction is not valid any more.
Revoke restrictions that crypto requests can be serviced with odd
RSA modulus length in CRT format.
Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/crypto/zcrypt_cca_key.h')
| -rw-r--r-- | drivers/s390/crypto/zcrypt_cca_key.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/s390/crypto/zcrypt_cca_key.h b/drivers/s390/crypto/zcrypt_cca_key.h index 1f42f103c761..ca0cdbe46368 100644 --- a/drivers/s390/crypto/zcrypt_cca_key.h +++ b/drivers/s390/crypto/zcrypt_cca_key.h @@ -291,7 +291,7 @@ static inline int zcrypt_type6_crt_key(struct ica_rsa_modexpo_crt *crt, memset(key, 0, sizeof(*key)); - short_len = crt->inputdatalength / 2; + short_len = (crt->inputdatalength + 1) / 2; long_len = short_len + 8; pad_len = -(3*long_len + 2*short_len) & 7; key_len = 3*long_len + 2*short_len + pad_len + crt->inputdatalength; |