diff --git a/Cargo.lock b/Cargo.lock
index 04ae34b..df23ece 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -714,7 +714,7 @@ dependencies = [
  "libflate",
  "md5",
  "mime",
- "openssl",
+ "pem",
  "rand 0.9.1",
  "reqwest",
  "rsa",
@@ -1409,9 +1409,9 @@ checksum = "c9627da5196e5d8ed0b0495e61e518847578da83483c37288316d9b2e03a7f72"
 
 [[package]]
 name = "libsqlite3-sys"
-version = "0.33.0"
+version = "0.35.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "947e6816f7825b2b45027c2c32e7085da9934defa535de4a6a46b10a4d5257fa"
+checksum = "133c182a6a2c87864fe97778797e46c7e999672690dc9fa3ee8e241aa4a9c13f"
 dependencies = [
  "cc",
  "pkg-config",
@@ -1465,9 +1465,9 @@ checksum = "13dc2df351e3202783a1fe0d44375f7295ffb4049267b0f3018346dc122a1d94"
 
 [[package]]
 name = "md5"
-version = "0.7.0"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "490cc448043f947bae3cbee9c203358d62dbee0db12107a74be5c30ccfd09771"
+checksum = "ae960838283323069879657ca3de837e9f7bbb4c7bf6ea7f1b290d5e9476d2e0"
 
 [[package]]
 name = "memchr"
@@ -1619,15 +1619,6 @@ version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d05e27ee213611ffe7d6348b942e8f942b37114c00cc03cec254295a4a17852e"
 
-[[package]]
-name = "openssl-src"
-version = "300.5.0+3.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e8ce546f549326b0e6052b649198487d91320875da901e7bd11a06d1ee3f9c2f"
-dependencies = [
- "cc",
-]
-
 [[package]]
 name = "openssl-sys"
 version = "0.9.108"
@@ -1636,7 +1627,6 @@ checksum = "e145e1651e858e820e4860f7b9c5e169bc1d8ce1c86043be79fa7b7634821847"
 dependencies = [
  "cc",
  "libc",
- "openssl-src",
  "pkg-config",
  "vcpkg",
 ]
@@ -1664,6 +1654,16 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
+[[package]]
+name = "pem"
+version = "3.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d30c53c26bc5b31a98cd02d20f25a7c8567146caf63ed593a9d87b2775291be"
+dependencies = [
+ "base64",
+ "serde_core",
+]
+
 [[package]]
 name = "pem-rfc7468"
 version = "0.7.0"
@@ -1962,6 +1962,7 @@ dependencies = [
  "pkcs1",
  "pkcs8",
  "rand_core 0.6.4",
+ "sha1",
  "signature",
  "spki",
  "subtle",
@@ -1970,9 +1971,9 @@ dependencies = [
 
 [[package]]
 name = "rusqlite"
-version = "0.35.0"
+version = "0.37.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a22715a5d6deef63c637207afbe68d0c72c3f8d0022d7cf9714c442d6157606b"
+checksum = "165ca6e57b20e1351573e3729b958bc62f0e48025386970b6e4d29e7a7e71f3f"
 dependencies = [
  "bitflags",
  "fallible-iterator",
@@ -2092,18 +2093,28 @@ dependencies = [
 
 [[package]]
 name = "serde"
-version = "1.0.219"
+version = "1.0.228"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f0e2c6ed6606019b4e29e69dbaba95b11854410e5347d525002456dbbb786b6"
+checksum = "9a8e94ea7f378bd32cbbd37198a4a91436180c5bb472411e48b5ec2e2124ae9e"
+dependencies = [
+ "serde_core",
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_core"
+version = "1.0.228"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41d385c7d4ca58e59fc732af25c3983b67ac852c1a25000afe1175de458b67ad"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.219"
+version = "1.0.228"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5b0276cf7f2c73365f7157c8123c21cd9a50fbbd844757af28ca1f5925fc2a00"
+checksum = "d540f220d3187173da220f885ab66608367b6574e925011a9353e4badda91d79"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/Cargo.toml b/Cargo.toml
index d46db11..93a0f02 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,8 +5,7 @@ edition = "2024"
 
 [dependencies]
 actix-web = { version = "4.10.2" }
-rusqlite = { version = "0.35.0", features = ["bundled"] }
-openssl = { version = "0.10", features = ["vendored"] }
+rusqlite = { version = "0.37.0", features = ["bundled"] }
 reqwest = { version = "0.12", features = ["blocking"] }
 clap = { version = "4.5.37", features = ["derive"]}
 base64 = "0.22.1"
@@ -16,12 +15,12 @@ lazy_static = "1.5.0"
 chrono = "0.4.41"
 hex = "0.4.3"
 hmac = "0.12.1"
-md5 = "0.7.0"
+md5 = "0.8.0"
 urlencoding = "2.1.3"
 sha1 = "0.10.6"
 substring = "1.4.5"
 uuid = { version = "1.16.0", features = ["v7"] }
-rsa = "0.9.8"
+rsa = { version = "0.9.8", features = ["sha1"] }
 mime = "0.3.17"
 sha2 = "0.10.9"
 include-flate-codegen = "0.3.0"
@@ -30,3 +29,4 @@ serde_json = "1.0.140"
 serde = { version = "1.0.219", features = ["derive"] }
 cbc = { version = "0.1.2", features = ["alloc"] }
 aes = "0.8.4"
+pem = "3.0.6"
diff --git a/src/router/gree.rs b/src/router/gree.rs
index 2586171..ed79a72 100644
--- a/src/router/gree.rs
+++ b/src/router/gree.rs
@@ -8,10 +8,9 @@ use hmac::{Hmac, Mac};
 use rusqlite::params;
 use lazy_static::lazy_static;
 
-use openssl::pkey::PKey;
-use openssl::rsa::Rsa;
-use openssl::hash::MessageDigest;
-use openssl::sign::Verifier;
+use sha1::Digest;
+use rsa::{RsaPublicKey, Pkcs1v15Sign};
+use rsa::pkcs8::DecodePublicKey;
 
 use crate::router::global;
 use crate::router::userdata;
@@ -56,19 +55,14 @@ fn create_acc(cert: &str) -> String {
     uuid
 }
 
-fn verify_signature(signature: &[u8], message: &[u8], public_key: &[u8]) -> bool {
-    let rsa_public_key = match Rsa::public_key_from_pem(public_key) {
-        Ok(key) => key,
-        Err(_) => return false,
-    };
-    let pkey = match PKey::from_rsa(rsa_public_key) {
-        Ok(pkey) => pkey,
-        Err(_) => return false,
-    };
-    let mut verifier = Verifier::new(MessageDigest::sha1(), &pkey).unwrap();
-    verifier.update(message).unwrap();
+fn verify_signature(signature: &[u8], message: &[u8], public_key: &str) -> bool {
+    let pem = pem::parse(public_key).unwrap();
+    let public_key = RsaPublicKey::from_public_key_der(&pem.contents()).unwrap();
+    let digest = Sha1::digest(message);
 
-    verifier.verify(signature).is_ok()
+    public_key
+        .verify(Pkcs1v15Sign::new::<Sha1>(), &digest, signature)
+        .is_ok()
 }
 
 pub fn delete_uuid(user_id: i64) {
@@ -97,7 +91,7 @@ pub fn get_uuid(headers: &HeaderMap, body: &str) -> String {
     
     let decoded = general_purpose::STANDARD.decode(login).unwrap_or_default();
     
-    if verify_signature(&decoded, encoded.as_bytes(), cert.as_bytes()) {
+    if verify_signature(&decoded, encoded.as_bytes(), &cert) {
         DATABASE.lock_and_select("SELECT uuid FROM users WHERE user_id=?1;", params!(uid)).unwrap()
     } else {
         String::new()