diff options
Diffstat (limited to 'crypto/ics/cryptfs.c')
| -rw-r--r-- | crypto/ics/cryptfs.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/crypto/ics/cryptfs.c b/crypto/ics/cryptfs.c index d994449c1..193339ec9 100644 --- a/crypto/ics/cryptfs.c +++ b/crypto/ics/cryptfs.c @@ -75,6 +75,7 @@ static int master_key_saved = 0; static int using_samsung_encryption = 0; //static edk_t saved_master_key; static unsigned char saved_master_key[KEY_LEN_BYTES_SAMSUNG]; +edk_payload_t edk_payload; #else static unsigned char saved_master_key[KEY_LEN_BYTES]; #endif @@ -187,8 +188,15 @@ static int get_crypt_ftr_and_key(char *real_blk_name, struct crypt_mnt_ftr *cryp } else { printf("Using Samsung encryption.\n"); using_samsung_encryption = 1; - memcpy(key, &crypt_ftr->edk_payload, sizeof(edk_payload_t)); - + if ( (cnt = read(fd, &edk_payload, sizeof(edk_payload_t))) != sizeof(edk_payload_t)) { + printf("Cannot read EDK payload from real block device footer\n"); + goto errout; + } + if (lseek64(fd, sizeof(__le32), SEEK_CUR) == -1) { + printf("Cannot seek past unknown data from real block device footer\n"); + goto errout; + } + memcpy(key, &edk_payload, sizeof(edk_payload_t)); } #else printf("Bad magic for real block device %s\n", fname); @@ -217,7 +225,7 @@ static int get_crypt_ftr_and_key(char *real_blk_name, struct crypt_mnt_ftr *cryp } } - if (crypt_ftr->keysize != sizeof(saved_master_key)) { + if (crypt_ftr->keysize > sizeof(saved_master_key)) { printf("Keysize of %d bits not supported for real block device %s\n", crypt_ftr->keysize * 8, fname); goto errout; |