diff --git a/Cargo.toml b/Cargo.toml
index f668a65..1a610f4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cas-lib"
-version = "0.2.5"
+version = "0.2.6"
 edition = "2021"
 description = "Core lib for CAS"
 license = "Apache-2.0"
@@ -22,7 +22,6 @@ rsa = "0.9.6"
 scrypt = "0.11.0"
 sha3 = "0.10.8"
 x25519-dalek = {version = "2.0.0", features = ["static_secrets"]}
-rand_07 = { package = "rand", version = "0.7.0" }
 ascon-aead = "0.4.2"
 rayon = "1.10.0"
 hmac = "0.12.1"
@@ -31,15 +30,10 @@ zstd = "0.13"
 hpke = "0.12.0"
 uuid = { version = "1.10.0", features = ["v4"] }
 pbkdf2 = "0.12.2"
+ed25519-dalek = { version = "2", features = ["rand_core"] }
 
 [profile.dev.package.num-bigint-dig]
 opt-level = 3
 
-[dependencies.ed25519-dalek]
-version = "1"
-
 [build-dependencies]
-napi-build = "1"
-
-[profile.dev]
-opt-level = 2
\ No newline at end of file
+napi-build = "1"
\ No newline at end of file
diff --git a/src/digital_signature/cas_digital_signature_rsa.rs b/src/digital_signature/cas_digital_signature_rsa.rs
index 0dc19f9..f18e1f4 100644
--- a/src/digital_signature/cas_digital_signature_rsa.rs
+++ b/src/digital_signature/cas_digital_signature_rsa.rs
@@ -4,8 +4,8 @@ pub struct RSADigitalSignatureResult {
     pub signature: Vec<u8>,
 }
 pub struct SHAED25519DalekDigitalSignatureResult {
-    pub public_key: Vec<u8>,
-    pub signature: Vec<u8>
+    pub public_key: [u8; 32],
+    pub signature: [u8; 64]
 }
 
 pub trait RSADigitalSignature {
@@ -16,8 +16,8 @@ pub trait RSADigitalSignature {
 }
 
 pub trait ED25519DigitalSignature {
-    fn digital_signature_ed25519(data_to_sign: Vec<u8>) -> SHAED25519DalekDigitalSignatureResult;
-    fn digital_signature_ed25519_threadpool(data_to_sign: Vec<u8>) -> SHAED25519DalekDigitalSignatureResult;
-    fn digital_signature_ed25519_verify(public_key: Vec<u8>, data_to_verify: Vec<u8>, signature: Vec<u8>) -> bool;
-    fn digital_signature_ed25519_verify_threadpool(public_key: Vec<u8>, data_to_verify: Vec<u8>, signature: Vec<u8>) -> bool;
+    fn digital_signature_ed25519(data_to_sign: &[u8]) -> SHAED25519DalekDigitalSignatureResult;
+    fn digital_signature_ed25519_threadpool(data_to_sign: &[u8]) -> SHAED25519DalekDigitalSignatureResult;
+    fn digital_signature_ed25519_verify(public_key: [u8; 32], data_to_verify: &[u8], signature: [u8; 64]) -> bool;
+    fn digital_signature_ed25519_verify_threadpool(public_key: [u8; 32], data_to_verify: &[u8], signature: [u8; 64]) -> bool;
 }
\ No newline at end of file
diff --git a/src/digital_signature/sha_256_ed25519.rs b/src/digital_signature/sha_256_ed25519.rs
index a59ccb0..d9defed 100644
--- a/src/digital_signature/sha_256_ed25519.rs
+++ b/src/digital_signature/sha_256_ed25519.rs
@@ -1,8 +1,9 @@
 use std::sync::mpsc;
 
-use ed25519_dalek::{Keypair, Signature, Signer, Verifier};
 use sha3::{Digest, Sha3_256};
 
+use crate::signatures::ed25519::{ed25519_sign_with_key_pair, ed25519_verify_with_public_key, get_ed25519_key_pair};
+
 use super::cas_digital_signature_rsa::{
     ED25519DigitalSignature, SHAED25519DalekDigitalSignatureResult,
 };
@@ -10,52 +11,51 @@ use super::cas_digital_signature_rsa::{
 pub struct SHA256ED25519DigitalSignature;
 
 impl ED25519DigitalSignature for SHA256ED25519DigitalSignature {
-    fn digital_signature_ed25519(data_to_sign: Vec<u8>) -> SHAED25519DalekDigitalSignatureResult {
+    fn digital_signature_ed25519(data_to_sign: &[u8]) -> SHAED25519DalekDigitalSignatureResult {
         let mut hasher = Sha3_256::new();
         hasher.update(data_to_sign);
         let sha_hasher_result = hasher.finalize();
-        let mut csprng = rand_07::rngs::OsRng {};
-        let keypair = ed25519_dalek::Keypair::generate(&mut csprng);
-
-        let signature = keypair.sign(&sha_hasher_result);
-        let signature_bytes = signature.to_bytes();
-        let public_keypair_bytes = keypair.public.to_bytes();
+        let sha_hash_bytes = sha_hasher_result.as_slice();
+        let key_pair = get_ed25519_key_pair();
+        let signature = ed25519_sign_with_key_pair(key_pair, sha_hash_bytes);
         let result = SHAED25519DalekDigitalSignatureResult {
-            public_key: public_keypair_bytes.to_vec(),
-            signature: signature_bytes.to_vec(),
+            public_key: signature.public_key,
+            signature: signature.signature,
         };
         result
     }
 
-    fn digital_signature_ed25519_verify(public_key: Vec<u8>, data_to_verify: Vec<u8>, signature: Vec<u8>) -> bool {
+    fn digital_signature_ed25519_verify(
+        public_key: [u8; 32],
+        data_to_verify: &[u8],
+        signature: [u8; 64]
+    ) -> bool {
         let mut hasher = Sha3_256::new();
         hasher.update(data_to_verify);
         let sha_hasher_result = hasher.finalize();
-
-        let public_key_parsed = ed25519_dalek::PublicKey::from_bytes(&public_key).unwrap();
-        let signature_parsed = Signature::from_bytes(&signature).unwrap();
-        return public_key_parsed
-            .verify(&sha_hasher_result, &signature_parsed)
-            .is_ok();
+        let sha_hash_bytes = sha_hasher_result.as_slice();
+        return ed25519_verify_with_public_key(public_key, signature, sha_hash_bytes);
     }
     
-    fn digital_signature_ed25519_threadpool(data_to_sign: Vec<u8>) -> SHAED25519DalekDigitalSignatureResult {
+    fn digital_signature_ed25519_threadpool(data_to_sign: &[u8]) -> SHAED25519DalekDigitalSignatureResult {
         let (sender, receiver) = mpsc::channel();
+        let data_clone = data_to_sign.to_vec();
         rayon::spawn(move || {
-            let result = <SHA256ED25519DigitalSignature as ED25519DigitalSignature>::digital_signature_ed25519(data_to_sign);
+            let result = <SHA256ED25519DigitalSignature as ED25519DigitalSignature>::digital_signature_ed25519(&data_clone);
             sender.send(result);
         });
         let result = receiver.recv().unwrap();
         result
     }
     
-    fn digital_signature_ed25519_verify_threadpool(public_key: Vec<u8>, data_to_verify: Vec<u8>, signature: Vec<u8>) -> bool {
+    fn digital_signature_ed25519_verify_threadpool(public_key: [u8; 32], data_to_verify: &[u8], signature: [u8; 64]) -> bool {
         let (sender, receiver) = mpsc::channel();
+        let data_to_verify_clone = data_to_verify.to_vec();
         rayon::spawn(move || {
-            let result = <SHA256ED25519DigitalSignature as ED25519DigitalSignature>::digital_signature_ed25519_verify(public_key, data_to_verify, signature);
+            let result = <SHA256ED25519DigitalSignature as ED25519DigitalSignature>::digital_signature_ed25519_verify(public_key, &data_to_verify_clone, signature);
             sender.send(result);
         });
         let result = receiver.recv().unwrap();
         result
     }
-}
\ No newline at end of file
+}
diff --git a/src/digital_signature/sha_512_ed25519.rs b/src/digital_signature/sha_512_ed25519.rs
index 0c97397..31a3fcd 100644
--- a/src/digital_signature/sha_512_ed25519.rs
+++ b/src/digital_signature/sha_512_ed25519.rs
@@ -1,8 +1,9 @@
 use std::sync::mpsc;
 
-use ed25519_dalek::{Keypair, Signature, Signer, Verifier};
 use sha3::{Digest, Sha3_512};
 
+use crate::signatures::ed25519::{ed25519_sign_with_key_pair, ed25519_verify_with_public_key, ed25519_verify_with_public_key_threadpool, get_ed25519_key_pair};
+
 use super::cas_digital_signature_rsa::{
     ED25519DigitalSignature, SHAED25519DalekDigitalSignatureResult,
 };
@@ -11,54 +12,50 @@ pub struct SHA512ED25519DigitalSignature;
 
 impl ED25519DigitalSignature for SHA512ED25519DigitalSignature {
     fn digital_signature_ed25519(
-        data_to_sign: Vec<u8>,
+        data_to_sign: &[u8],
     ) -> SHAED25519DalekDigitalSignatureResult {
         let mut hasher = Sha3_512::new();
         hasher.update(data_to_sign);
         let sha_hasher_result = hasher.finalize();
-        let mut csprng = rand_07::rngs::OsRng {};
-        let keypair = Keypair::generate(&mut csprng);
+        let sha_hash_bytes = sha_hasher_result.as_slice();
+        let key_pair: [u8; 32] = get_ed25519_key_pair();
 
-        let signature = keypair.sign(&sha_hasher_result);
-        let signature_bytes = signature.to_bytes();
-        let public_keypair_bytes = keypair.public.to_bytes();
+        let signature = ed25519_sign_with_key_pair(key_pair, sha_hash_bytes);
         let result = SHAED25519DalekDigitalSignatureResult {
-            public_key: public_keypair_bytes.to_vec(),
-            signature: signature_bytes.to_vec(),
+            public_key: signature.public_key,
+            signature: signature.signature,
         };
         result
     }
 
     fn digital_signature_ed25519_verify(
-        public_key: Vec<u8>,
-        data_to_verify: Vec<u8>,
-        signature: Vec<u8>,
+        public_key: [u8; 32],
+        data_to_verify: &[u8],
+        signature: [u8; 64],
     ) -> bool {
         let mut hasher = Sha3_512::new();
         hasher.update(data_to_verify);
         let sha_hasher_result = hasher.finalize();
-
-        let public_key_parsed = ed25519_dalek::PublicKey::from_bytes(&public_key).unwrap();
-        let signature_parsed = Signature::from_bytes(&signature).unwrap();
-        return public_key_parsed
-            .verify(&sha_hasher_result, &signature_parsed)
-            .is_ok();
+        let sha_hash_bytes = sha_hasher_result.as_slice();
+        return ed25519_verify_with_public_key(public_key, signature, sha_hash_bytes);
     }
-
-    fn digital_signature_ed25519_threadpool(data_to_sign: Vec<u8>) -> SHAED25519DalekDigitalSignatureResult {
+    
+    fn digital_signature_ed25519_threadpool(data_to_sign: &[u8]) -> SHAED25519DalekDigitalSignatureResult {
         let (sender, receiver) = mpsc::channel();
+        let data_clone = data_to_sign.to_vec();
         rayon::spawn(move || {
-            let result = <SHA512ED25519DigitalSignature as ED25519DigitalSignature>::digital_signature_ed25519(data_to_sign);
+            let result = <SHA512ED25519DigitalSignature as ED25519DigitalSignature>::digital_signature_ed25519(&data_clone);
             sender.send(result);
         });
         let result = receiver.recv().unwrap();
         result
     }
     
-    fn digital_signature_ed25519_verify_threadpool(public_key: Vec<u8>, data_to_verify: Vec<u8>, signature: Vec<u8>) -> bool {
+    fn digital_signature_ed25519_verify_threadpool(public_key: [u8; 32], data_to_verify: &[u8], signature: [u8; 64]) -> bool {
         let (sender, receiver) = mpsc::channel();
+        let data_to_verify_clone = data_to_verify.to_vec();
         rayon::spawn(move || {
-            let result = <SHA512ED25519DigitalSignature as ED25519DigitalSignature>::digital_signature_ed25519_verify(public_key, data_to_verify, signature);
+            let result = <SHA512ED25519DigitalSignature as ED25519DigitalSignature>::digital_signature_ed25519_verify(public_key, &data_to_verify_clone, signature);
             sender.send(result);
         });
         let result = receiver.recv().unwrap();
diff --git a/src/signatures/cas_ed25519.rs b/src/signatures/cas_ed25519.rs
index daa5462..b2a3de5 100644
--- a/src/signatures/cas_ed25519.rs
+++ b/src/signatures/cas_ed25519.rs
@@ -1,4 +1,4 @@
 pub struct Ed25519ByteSignature{
-    pub signature: Vec<u8>,
-    pub public_key: Vec<u8>
+    pub signature: [u8; 64],
+    pub public_key: [u8; 32]
 }
\ No newline at end of file
diff --git a/src/signatures/ed25519.rs b/src/signatures/ed25519.rs
index 5a53eeb..5511ea2 100644
--- a/src/signatures/ed25519.rs
+++ b/src/signatures/ed25519.rs
@@ -3,22 +3,20 @@ extern crate rand;
 
 use std::sync::mpsc;
 
-use ed25519_dalek::Signer;
-use ed25519_dalek::{Keypair, PublicKey, Signature, Verifier};
-use rand_07::rngs::OsRng;
-
-use crate::message;
+use ed25519_dalek::{Signer, SigningKey, VerifyingKey};
+use ed25519_dalek::Signature;
+use rand::rngs::OsRng;
 
 use super::cas_ed25519::Ed25519ByteSignature;
 
-pub fn get_ed25519_key_pair() -> Vec<u8> {
-    let mut csprng = OsRng {};
-    let keypair = Keypair::generate(&mut csprng);
-    let keypair_vec = keypair.to_bytes().to_vec();
-    keypair_vec
+pub fn get_ed25519_key_pair() -> [u8; 32] {
+    let mut csprng = OsRng;
+    let keypair = SigningKey::generate(&mut csprng);
+    let keypair_vec = keypair.to_bytes();
+    keypair_vec 
 }
 
-pub fn get_ed25519_key_pair_threadpool() -> Vec<u8> {
+pub fn get_ed25519_key_pair_threadpool() -> [u8; 32] {
     let (sender, receiver) = mpsc::channel();
     rayon::spawn(move || {
         let result = get_ed25519_key_pair();
@@ -28,22 +26,23 @@ pub fn get_ed25519_key_pair_threadpool() -> Vec<u8> {
     result
 }
 
-pub fn ed25519_sign_with_key_pair(key_pair: Vec<u8>, message_to_sign: Vec<u8>) -> Ed25519ByteSignature {
-    let keypair = Keypair::from_bytes(&key_pair).unwrap();
+pub fn ed25519_sign_with_key_pair(key_pair: [u8; 32], message_to_sign: &[u8]) -> Ed25519ByteSignature {
+    let keypair = SigningKey::from_bytes(&key_pair);
     let signature = keypair.sign(&message_to_sign);
-    let signature_bytes = signature.to_bytes().to_vec();
-    let public_keypair_bytes = keypair.public.to_bytes().to_vec();
+    let signature_bytes = signature.to_bytes();
+    let public_keypair_vec = keypair.verifying_key().to_bytes();
     let result = Ed25519ByteSignature {
-        public_key: public_keypair_bytes,
+        public_key: public_keypair_vec,
         signature: signature_bytes
     };
     result
 }
 
-pub fn ed25519_sign_with_key_pair_threadpool(key_pair: Vec<u8>, message_to_sign: Vec<u8>) -> Ed25519ByteSignature {
+pub fn ed25519_sign_with_key_pair_threadpool(key_pair: [u8; 32], message_to_sign: &[u8]) -> Ed25519ByteSignature {
     let (sender, receiver) = mpsc::channel();
+    let message_to_sign_clone = message_to_sign.to_vec(); 
     rayon::spawn(move || {
-        let result = ed25519_sign_with_key_pair(key_pair, message_to_sign);
+        let result = ed25519_sign_with_key_pair(key_pair, &message_to_sign_clone);
         sender.send(result);
     });
     let result = receiver.recv().unwrap();
@@ -51,35 +50,36 @@ pub fn ed25519_sign_with_key_pair_threadpool(key_pair: Vec<u8>, message_to_sign:
 }
 
 
-pub fn ed25519_verify_with_key_pair(key_pair: Vec<u8>, signature: Vec<u8>, message: Vec<u8>) -> bool {
-    let keypair = Keypair::from_bytes(&key_pair).unwrap();
-    let public_key = keypair.public;
-    let signature = Signature::from_bytes(&signature).unwrap();
-    return public_key.verify(&message, &signature).is_ok();
+pub fn ed25519_verify_with_key_pair(key_pair: [u8; 32], signature: [u8; 64], message: &[u8]) -> bool {
+    let keypair = SigningKey::from_bytes(&key_pair);
+    let signature = Signature::from_bytes(&signature);
+    return keypair.verify(&message, &signature).is_ok();
 }
 
-pub fn ed25519_verify_with_key_pair_threadpool(key_pair: Vec<u8>, signature: Vec<u8>, message: Vec<u8>) -> bool {
+pub fn ed25519_verify_with_key_pair_threadpool(key_pair: [u8; 32], signature: [u8; 64], message: &[u8]) -> bool {
     let (sender, receiver) = mpsc::channel();
+    let message_clone = message.to_vec();
     rayon::spawn(move || {
-        let result = ed25519_verify_with_key_pair(key_pair, signature, message);
+        let result = ed25519_verify_with_key_pair(key_pair, signature, &message_clone);
         sender.send(result);
     });
     let result = receiver.recv().unwrap();
     result
 }
 
-pub fn ed25519_verify_with_public_key(public_key: Vec<u8>, signature: Vec<u8>, message: Vec<u8>) -> bool {
-    let public_key_parsed = PublicKey::from_bytes(&public_key).unwrap();
-    let signature_parsed = Signature::from_bytes(&signature).unwrap();
-    return public_key_parsed
-        .verify(&message, &signature_parsed)
+pub fn ed25519_verify_with_public_key(public_key: [u8; 32], signature: [u8; 64], message: &[u8]) -> bool {
+    let verifying_key = VerifyingKey::from_bytes(&public_key).unwrap();
+    let signature_parsed = Signature::from_bytes(&signature);
+    return verifying_key
+        .verify_strict(&message, &signature_parsed)
         .is_ok();
 }
 
-pub fn ed25519_verify_with_public_key_threadpool(public_key: Vec<u8>, signature: Vec<u8>, message: Vec<u8>) -> bool {
+pub fn ed25519_verify_with_public_key_threadpool(public_key: [u8; 32], signature: [u8; 64], message: &[u8]) -> bool {
     let (sender, receiver) = mpsc::channel();
+    let message_clone = message.to_vec();
     rayon::spawn(move || {
-        let result = ed25519_verify_with_public_key(public_key, signature, message);
+        let result = ed25519_verify_with_public_key(public_key, signature, &message_clone);
         sender.send(result);
     });
     let result = receiver.recv().unwrap();
diff --git a/tests/digital_signatures.rs b/tests/digital_signatures.rs
new file mode 100644
index 0000000..9d12b6a
--- /dev/null
+++ b/tests/digital_signatures.rs
@@ -0,0 +1,36 @@
+#[cfg(test)]
+mod digital_signatures {
+    use cas_lib::digital_signature::{cas_digital_signature_rsa::{ED25519DigitalSignature, SHAED25519DalekDigitalSignatureResult}, sha_256_ed25519::SHA256ED25519DigitalSignature, sha_256_rsa::SHA256RSADigitalSignature, sha_512_ed25519::SHA512ED25519DigitalSignature};
+ 
+    #[test]
+    pub fn ed25519_sha_512_digital_signature_verify() {
+        let data_to_sign = b"This is a test of a digital signature";
+        let result: SHAED25519DalekDigitalSignatureResult = <SHA512ED25519DigitalSignature as ED25519DigitalSignature>::digital_signature_ed25519(data_to_sign);
+        let verification = <SHA512ED25519DigitalSignature as ED25519DigitalSignature>::digital_signature_ed25519_verify(result.public_key, data_to_sign, result.signature);
+        assert_eq!(true, verification);
+    }
+
+    #[test]
+    pub fn ed25519_sha_512_digital_signature_threadpool_verify() {
+        let data_to_sign = b"This is a test of a digital signature";
+        let result: SHAED25519DalekDigitalSignatureResult = <SHA512ED25519DigitalSignature as ED25519DigitalSignature>::digital_signature_ed25519_threadpool(data_to_sign);
+        let verification = <SHA512ED25519DigitalSignature as ED25519DigitalSignature>::digital_signature_ed25519_verify_threadpool(result.public_key, data_to_sign, result.signature);
+        assert_eq!(true, verification);
+    }
+
+    #[test]
+    pub fn ed25519_sha_256_digital_signature_verify() {
+        let data_to_sign = b"This is a test of a digital signature";
+        let result: SHAED25519DalekDigitalSignatureResult = <SHA256ED25519DigitalSignature as ED25519DigitalSignature>::digital_signature_ed25519(data_to_sign);
+        let verification = <SHA256ED25519DigitalSignature as ED25519DigitalSignature>::digital_signature_ed25519_verify(result.public_key, data_to_sign, result.signature);
+        assert_eq!(true, verification);
+    }
+
+    #[test]
+    pub fn ed25519_sha_256_digital_signature_threadpool_verify() {
+        let data_to_sign = b"This is a test of a digital signature";
+        let result: SHAED25519DalekDigitalSignatureResult = <SHA256ED25519DigitalSignature as ED25519DigitalSignature>::digital_signature_ed25519_threadpool(data_to_sign);
+        let verification = <SHA256ED25519DigitalSignature as ED25519DigitalSignature>::digital_signature_ed25519_verify_threadpool(result.public_key, data_to_sign, result.signature);
+        assert_eq!(true, verification);
+    }
+}
\ No newline at end of file
diff --git a/tests/signatures.rs b/tests/signatures.rs
new file mode 100644
index 0000000..3b5983f
--- /dev/null
+++ b/tests/signatures.rs
@@ -0,0 +1,70 @@
+#[cfg(test)]
+mod ed25519 {
+    use cas_lib::signatures::ed25519::{ed25519_sign_with_key_pair, ed25519_sign_with_key_pair_threadpool, ed25519_verify_with_key_pair, ed25519_verify_with_key_pair_threadpool, ed25519_verify_with_public_key, ed25519_verify_with_public_key_threadpool, get_ed25519_key_pair, get_ed25519_key_pair_threadpool};
+
+    #[test]
+    pub fn get_key_pair_test() {
+        let key_pair = get_ed25519_key_pair();
+        assert!(key_pair != [0; 32], "Array is all zeros");
+    }
+
+    #[test]
+    pub fn get_key_pair_test_threadpool() {
+        let key_pair = get_ed25519_key_pair_threadpool();
+        assert!(key_pair != [0; 32], "Array is all zeros");
+    }
+
+    #[test]
+    pub fn sign_with_key_pair() {
+        let key_pair = get_ed25519_key_pair();
+        let message_to_sign = b"Hello World Message To Sign";
+        let signature = ed25519_sign_with_key_pair(key_pair, message_to_sign);
+        assert!(signature.signature != [0; 64], "Array is all zeros");
+        assert!(signature.public_key != [0; 32], "Array is all zeros");
+    }
+
+    #[test]
+    pub fn sign_with_key_pair_threadpool() {
+        let key_pair = get_ed25519_key_pair_threadpool();
+        let message_to_sign = b"Hello World Message To Sign";
+        let signature = ed25519_sign_with_key_pair_threadpool(key_pair, message_to_sign);
+        assert!(signature.signature != [0; 64], "Array is all zeros");
+        assert!(signature.public_key != [0; 32], "Array is all zeros");
+    }
+
+    #[test]
+    pub fn verifiy_with_public_key_() {
+        let key_pair = get_ed25519_key_pair();
+        let message_to_sign = b"Hello World Message To Sign";
+        let signature = ed25519_sign_with_key_pair(key_pair, message_to_sign);
+        let verification = ed25519_verify_with_public_key(signature.public_key, signature.signature, message_to_sign);
+        assert_eq!(verification, true);
+    }
+
+    #[test]
+    pub fn verifiy_with_public_key_threadpool() {
+        let key_pair = get_ed25519_key_pair_threadpool();
+        let message_to_sign = b"Hello World Message To Sign";
+        let signature = ed25519_sign_with_key_pair_threadpool(key_pair, message_to_sign);
+        let verification = ed25519_verify_with_public_key_threadpool(signature.public_key, signature.signature, message_to_sign);
+        assert_eq!(verification, true);
+    }
+
+    #[test]
+    pub fn verifiy_with_key_pair() {
+        let key_pair = get_ed25519_key_pair();
+        let message_to_sign = b"Hello World Message To Sign";
+        let signature = ed25519_sign_with_key_pair(key_pair, message_to_sign);
+        let verification = ed25519_verify_with_key_pair(key_pair, signature.signature, message_to_sign);
+        assert_eq!(verification, true);
+    }
+
+    #[test]
+    pub fn verifiy_with_key_pair_threadpool() {
+        let key_pair = get_ed25519_key_pair();
+        let message_to_sign = b"Hello World Message To Sign";
+        let signature = ed25519_sign_with_key_pair_threadpool(key_pair, message_to_sign);
+        let verification = ed25519_verify_with_key_pair_threadpool(key_pair, signature.signature, message_to_sign);
+        assert_eq!(verification, true);
+    }
+}
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