[kgm] feat #2: basic kgm support

um_crypto/utils/Cargo.toml

@@ -5,3 +5,5 @@ edition = "2021"
 
 [dependencies]
 base64 = "0.22.1"
+itertools = "0.13.0"
+md-5 = "0.10.6"

um_crypto/utils/src/lib.rs

@@ -1 +1,3 @@
 pub mod base64;
+mod md5;
+pub use md5::md5;

um_crypto/utils/src/md5.rs

@@ -0,0 +1,5 @@
+use md5::{Digest, Md5};
+
+pub fn md5<T: AsRef<[u8]>>(buffer: T) -> [u8; 16] {
+    Md5::digest(buffer).into()
+}