Provided by: libcanlock-dev_3.1.0-1_amd64
libcanlock - Overwrite secret data in memory
#include <libcanlock-3/canlock.h> int cl_clear_secret(void *sec, size_t sec_size, size_t buf_size);
The cl_clear_secret() function tries to overwrite sec_size bytes of memory starting at the address specified by the sec parameter. The size buf_size must be set to the size of the whole buffer. If the operating system provides memset_s(), it is called with both length values. Otherwise nonportable functions like explicit_memset() are used if available. If neither memset_s() nor a nonportable replacement is available, a call to memset() is used instead, but the compiler maybe optimize this attempt to NOP. A positive value is returned as warning.
Upon successful completion zero is returned. Negative values indicate an error. Positive values indicate a warning. The value -1 is returned if the parameter sec is NULL or if sec_size is greater than buf_size. The value 1 indicates missing support for explicit memory access from the operating system.
Report bugs to <mailto:email@example.com>.
libcanlock tries to comply with the following standards: RFC5537, RFC6234, RFC8315
cl_get_key(3), cl_get_lock(3), cl_split(3), cl_verify(3), canlock(1) memset(3) memset_s(3)