32 lines
544 B
Rust
32 lines
544 B
Rust
use libc::c_int;
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use std::slice;
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#[link(name = "crypto")]
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extern {
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fn RAND_bytes(buf: *mut u8, num: c_int) -> c_int;
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}
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pub fn rand_bytes(len: uint) -> ~[u8] {
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unsafe {
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let mut out = slice::with_capacity(len);
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let r = RAND_bytes(out.as_mut_ptr(), len as c_int);
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if r != 1 as c_int { fail!() }
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out.set_len(len);
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out
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}
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}
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#[cfg(test)]
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mod tests {
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use super::rand_bytes;
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#[test]
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fn test_rand_bytes() {
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let bytes = rand_bytes(32u);
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println!("{}", bytes);
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}
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}
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