add iam system

add iam store

feat: add crypto crate

introduce decrypt_data and encrypt_data functions

Signed-off-by: bestgopher <84328409@qq.com>

iam/src/utils.rs

@@ -0,0 +1,62 @@
+use rand::{Rng, RngCore};
+
+use crate::Error;
+
+pub fn gen_access_key(length: usize) -> crate::Result<String> {
+    const ALPHA_NUMERIC_TABLE: [char; 36] = [
+        '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N',
+        'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
+    ];
+
+    if length < 3 {
+        return Err(Error::StringError("access key length is too short".into()));
+    }
+
+    let mut result = String::with_capacity(length);
+    let mut rng = rand::thread_rng();
+
+    for _ in 0..length {
+        result.push(ALPHA_NUMERIC_TABLE[rng.gen_range(0..ALPHA_NUMERIC_TABLE.len())]);
+    }
+
+    Ok(result)
+}
+
+pub fn gen_secret_key(length: usize) -> crate::Result<String> {
+    use base64_simd::URL_SAFE_NO_PAD;
+
+    if length < 8 {
+        return Err(Error::StringError("secret key length is too short".into()));
+    }
+    let mut rng = rand::thread_rng();
+
+    let mut key = vec![0u8; URL_SAFE_NO_PAD.estimated_decoded_length(length)];
+    rng.fill_bytes(&mut key);
+
+    let encoded = URL_SAFE_NO_PAD.encode_to_string(&key);
+    let key_str = encoded.replace("/", "+");
+
+    Ok(key_str)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::{gen_access_key, gen_secret_key};
+
+    #[test]
+    fn test_gen_access_key() {
+        let a = gen_access_key(10).unwrap();
+        let b = gen_access_key(10).unwrap();
+
+        assert_eq!(a.len(), 10);
+        assert_eq!(b.len(), 10);
+        assert_ne!(a, b);
+    }
+
+    #[test]
+    fn test_gen_secret_key() {
+        let a = gen_secret_key(10).unwrap();
+        let b = gen_secret_key(10).unwrap();
+        assert_ne!(a, b);
+    }
+}