Implemented crypto example

procfs/examples/README.md

@@ -181,3 +181,23 @@ Lots of references to this locations: addr=0x81ba3000, pfn=531363, refs=128
 Found RAM here: 0x100000000-0x11fffffff
 Lots of references to this locations: addr=0x1b575000, pfn=111989, refs=134
 ```
+
+
+## Crypto
+
+List available crypto algorithms, along with details. Passing an algorithm as an argument will show only that algorithms
+
+implementations (this can potentially be multiple). Partial arguments (i.e "sha") will return all algorithms that match.
+
+```text
+Type: sha256
+          Name: sha256
+        Driver: sha256-avx2
+        Module: sha256_ssse3
+      Priority: 170
+     Ref Count: 2
+     Self Test: Passed
+      Internal: false
+  fips enabled: false
+  Type Details: Shash(Shash { block_size: 64, digest_size: 32 })
+```

procfs/examples/crypto.rs

@@ -0,0 +1,28 @@
+use std::env::args;
+
+use procfs::crypto;
+
+pub fn main() {
+    let crypto = crypto().expect("Was not able to access current crypto");
+    let name_arg = args().nth(1);
+    for (name, entries) in crypto.crypto_blocks {
+        if let Some(ref name_find) = name_arg {
+            if !name.contains(name_find) {
+                continue;
+            }
+        }
+        println!("Type: {name}");
+        for block in entries {
+            println!("{:>14}: {}", "Name", block.name);
+            println!("{:>14}: {}", "Driver", block.driver);
+            println!("{:>14}: {}", "Module", block.module);
+            println!("{:>14}: {}", "Priority", block.priority);
+            println!("{:>14}: {}", "Ref Count", block.ref_count);
+            println!("{:>14}: {:?}", "Self Test", block.self_test);
+            println!("{:>14}: {}", "Internal", block.internal);
+            println!("{:>14}: {}", "fips enabled", block.fips_enabled);
+            println!("{:>14}: {:?}", "Type Details", block.crypto_type);
+            println!();
+        }
+    }
+}