diff options
Diffstat (limited to 'src/lib/crypto/krb/s2k_des.c')
| -rw-r--r-- | src/lib/crypto/krb/s2k_des.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/src/lib/crypto/krb/s2k_des.c b/src/lib/crypto/krb/s2k_des.c index 61b3c0f..31a613b 100644 --- a/src/lib/crypto/krb/s2k_des.c +++ b/src/lib/crypto/krb/s2k_des.c @@ -404,7 +404,8 @@ afs_s2k_oneblock(const krb5_data *data, const krb5_data *salt, */ memset(password, 0, sizeof(password)); - memcpy(password, salt->data, min(salt->length, 8)); + if (salt->length > 0) + memcpy(password, salt->data, min(salt->length, 8)); for (i = 0; i < 8; i++) { if (isupper(password[i])) password[i] = tolower(password[i]); @@ -443,7 +444,8 @@ afs_s2k_multiblock(const krb5_data *data, const krb5_data *salt, if (!password) return ENOMEM; - memcpy(password, data->data, data->length); + if (data->length > 0) + memcpy(password, data->data, data->length); for (i = data->length, j = 0; j < salt->length; i++, j++) { password[i] = salt->data[j]; if (isupper(password[i])) @@ -513,8 +515,9 @@ des_s2k(const krb5_data *pw, const krb5_data *salt, unsigned char *key_out) copy = malloc(copylen); if (copy == NULL) return ENOMEM; - memcpy(copy, pw->data, pw->length); - if (salt) + if (pw->length > 0) + memcpy(copy, pw->data, pw->length); + if (salt != NULL && salt->length > 0) memcpy(copy + pw->length, salt->data, salt->length); memset(&temp, 0, sizeof(temp)); |