kcapi_kpp_keygen_aio - Man Page

generate a public key (asynchronous one shot)

Synopsis

ssize_t kcapi_kpp_keygen_aio(struct kcapi_handle * handle, struct iovec * outiov, size_t iovlen, int access);

Arguments

handle

[in] cipher handle

outiov

[out] head of scatter-gather list of the destination buffers filled with the generated public key

iovlen

[in] number of scatter-gather list entries

access

[in] kernel access type (KCAPI_ACCESS_HEURISTIC - use internal heuristic for fastest kernel access; KCAPI_ACCESS_VMSPLICE - use vmsplice access; KCAPI_ACCESS_SENDMSG - sendmsg access)

Description

The individual scatter-gather list entries are processed with separate invocations of the the given cipher.

The memory should be aligned at the page boundary using posix_memalign(sysconf(_SC_PAGESIZE)), If it is not aligned at the page boundary, the vmsplice call may not send all data to the kernel.

return number of bytes verify upon success; a negative errno-style error code if an error occurred

Author

Stephan Mueller <smueller@chronox.de>

Author.

Info

July 2021 libkcapi Manual 1.3.1 Programming Interface