securerandom

Cryptographic Random Number Generation

Functions

Function	Description
`_srand_getrandom`	Internal: getrandom syscall (318 on x86-64).
`srand_bytes`	Fill buffer with n random bytes. Returns n on success, -1 on error.
`_srand_hex_digit`	Internal: hex digit.
`srand_hex`	Generate hex-encoded random bytes. Writes 2*nbytes chars to out. Returns numb…
`srand_base64`	Base64 encode random bytes. Returns chars written.
`srand_uuid4`	Generate UUID v4 string (36 chars: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx).
`srand_range`	Random integer in range [lo, hi). Uses getrandom for uniform distribution.

fn _srand_getrandom(buf: &i8, n: i64) -> i64

Internal: getrandom syscall (318 on x86-64).

fn srand_bytes(out: &i8, n: i64) -> i64

Fill buffer with n random bytes. Returns n on success, -1 on error.

fn _srand_hex_digit(v: i64) -> i64

Internal: hex digit.

fn srand_hex(out: &i8, nbytes: i64) -> i64

Generate hex-encoded random bytes. Writes 2*nbytes chars to out. Returns number of chars written.

fn srand_base64(out: &i8, nbytes: i64) -> i64

Base64 encode random bytes. Returns chars written.

fn srand_uuid4(out: &i8) -> i64

Generate UUID v4 string (36 chars: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx).

fn srand_range(lo: i64, hi: i64) -> i64

Random integer in range [lo, hi). Uses getrandom for uniform distribution.