random-util: rename acquire_random_bytes() → genuine_random_bytes()

It's more descriptive, since we also have a function random_bytes()
which sounds very similar.

Also rename pseudorandom_bytes() to pseudo_random_bytes(). This way the
two functions are nicely systematic, one returning genuine random bytes
and the other pseudo random ones.

src/test/test-random-util.c

@@ -5,14 +5,14 @@
 #include "log.h"
 #include "tests.h"
 
-static void test_acquire_random_bytes(bool high_quality_required) {
+static void test_genuine_random_bytes(bool high_quality_required) {
         uint8_t buf[16] = {};
         unsigned i;
 
         log_info("/* %s */", __func__);
 
         for (i = 1; i < sizeof buf; i++) {
-                assert_se(acquire_random_bytes(buf, i, high_quality_required) == 0);
+                assert_se(genuine_random_bytes(buf, i, high_quality_required) == 0);
                 if (i + 1 < sizeof buf)
                         assert_se(buf[i] == 0);
 
@@ -20,14 +20,14 @@ static void test_acquire_random_bytes(bool high_quality_required) {
         }
 }
 
-static void test_pseudorandom_bytes(void) {
+static void test_pseudo_random_bytes(void) {
         uint8_t buf[16] = {};
         unsigned i;
 
         log_info("/* %s */", __func__);
 
         for (i = 1; i < sizeof buf; i++) {
-                pseudorandom_bytes(buf, i);
+                pseudo_random_bytes(buf, i);
                 if (i + 1 < sizeof buf)
                         assert_se(buf[i] == 0);
 
@@ -54,10 +54,10 @@ static void test_rdrand64(void) {
 int main(int argc, char **argv) {
         test_setup_logging(LOG_DEBUG);
 
-        test_acquire_random_bytes(false);
-        test_acquire_random_bytes(true);
+        test_genuine_random_bytes(false);
+        test_genuine_random_bytes(true);
 
-        test_pseudorandom_bytes();
+        test_pseudo_random_bytes();
 
         test_rdrand64();