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	diff --git a/native/native_rust_library/src/crypto_tools.rs b/native/native_rust_library/src/crypto_tools.rs
	--- a/native/native_rust_library/src/crypto_tools.rs
	+++ b/native/native_rust_library/src/crypto_tools.rs
	@@ -4,6 +4,8 @@
	use openssl::sign::Signer;
	use rand::distributions::{Alphanumeric, DistString};

	+#[cfg(test)]
	+use openssl::{rsa::Rsa, sign::Verifier};
	#[cfg(test)]
	use regex::Regex;

	@@ -93,4 +95,29 @@
	);
	}
	}
	+
	+ #[test]
	+ fn verify_signed_string_with_private_key() {
	+ const NONCE: &str = "Test1ghTCoNquWbO2ST7G1c9";
	+
	+ // Generate a keypair
	+ let keypair = Rsa::generate(1024).expect("Failed to generate RSA keypair");
	+ let keypair = PKey::from_rsa(keypair).expect("Failed to get key from rsa");
	+
	+ // Sign the string to be signed with the private key
	+ let string_signature_base64 = sign_string_with_private_key(&keypair, NONCE)
	+ .expect("Error on calling the string signer function");
	+
	+ // Verify signature
	+ let mut verifier =
	+ Verifier::new(MessageDigest::sha256(), &keypair).unwrap();
	+ verifier.update(NONCE.as_bytes()).unwrap();
	+
	+ assert!(verifier
	+ .verify(
	+ &base64::decode(string_signature_base64)
	+ .expect("Failed to decode base64"),
	+ )
	+ .expect("Error on calling OpenSSL string verifier"));
	+ }
	}