diff --git a/apps/desktop/desktop_native/win_webauthn/src/plugin/crypto.rs b/apps/desktop/desktop_native/win_webauthn/src/plugin/crypto.rs
index 42e5daa790a..26e4c5af8b6 100644
--- a/apps/desktop/desktop_native/win_webauthn/src/plugin/crypto.rs
+++ b/apps/desktop/desktop_native/win_webauthn/src/plugin/crypto.rs
@@ -341,3 +341,139 @@ impl AsRef<[u8]> for VerifyingKey {
         unsafe { std::slice::from_raw_parts(self.pbPublicKey.as_ptr().cast(), len) }
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use std::ptr::NonNull;
+
+    use windows::Win32::Security::Cryptography::{BCRYPT_RSAKEY_BLOB, BCRYPT_RSAPUBLIC_MAGIC};
+
+    use crate::plugin::crypto::{verify_signature, VerifyingKey};
+
+    use super::hash_sha256;
+
+    #[test]
+    fn test_sha256_serializes_properly() {
+        let data = b"abc";
+        let digest = hash_sha256(data).unwrap();
+        let expected = &[
+            0xba, 0x78, 0x16, 0xbf, 0x8f, 0x01, 0xcf, 0xea, 0x41, 0x41, 0x40, 0xde, 0x5d, 0xae,
+            0x22, 0x23, 0xb0, 0x03, 0x61, 0xa3, 0x96, 0x17, 0x7a, 0x9c, 0xb4, 0x10, 0xff, 0x61,
+            0xf2, 0x00, 0x15, 0xad,
+        ];
+        assert_eq!(expected.as_slice(), digest.as_slice());
+    }
+
+    #[test]
+    fn test_rsa_signature_verifies_properly() {
+        // SHA-256 hash of "abc"
+        let digest = &[
+            0xba, 0x78, 0x16, 0xbf, 0x8f, 0x01, 0xcf, 0xea, 0x41, 0x41, 0x40, 0xde, 0x5d, 0xae,
+            0x22, 0x23, 0xb0, 0x03, 0x61, 0xa3, 0x96, 0x17, 0x7a, 0x9c, 0xb4, 0x10, 0xff, 0x61,
+            0xf2, 0x00, 0x15, 0xad,
+        ];
+        /*
+        Test private key used to create expected signature, generated by OpenSSL
+
+        -----BEGIN PRIVATE KEY-----
+        MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQDxLbHhDspTRQDM
+        NA2vTqznLjBztg6VNHiuS3iM1exO8cCZ2Xnorwj4Sk0LwDJg1KJHdpkQkf8IYMY4
+        BmgTciZThoDp1VAqMNDRHRuYZsVRfHxPnVApNos0MOTe/D2+VkexIdf8scaAStAq
+        R0XrVp/a+BPHFp9Vbm9LQDMigEXg1orzVLYL/mNadBpqyrjFiRsy7XqPO48T7TDs
+        Zm3SxPUhX+9tLOCskXP2/tMxSgwSC1d/r+mn5TaT+M7CDtejzByyIIFMvgEBuD1Z
+        2/POm4bz/SRxwvegdvNcTCb0HiNjAPdkvZ5gOOQAXfYPbuDKGs1MhFq1GtW24MN5
+        Rp0q0QiFAgMBAAECggEBAOQqd7tUU8MdZ9jIch3kz5zSTNJbbUZo4rb5/W03wR0a
+        hzzFyxh/53uGR4eTZ9XFtFTpdXuAs4cIjt5X6URkXK/ucq1FulZ/4j3DTOUMbSZf
+        H/ft+vVSfbV9gDkY54zXcXG5c+3DfejHXlJxJUu0ovz0bzmNRGX9WVsWvImqUvGW
+        EIDEKsFghLM79DYiGhmifO/gVhGUqaayxQAhcepOOVtwTPk9lpfYoxFQGvHdJKnL
+        +vmQ00+K96zzl9WMuR6ypNhnDCOqUBnYrmSIjllr7w6IS1EDPvuu3lrsSWstMpV6
+        SvmC+VXOJkDHgtkVMIlVfn2ATfzkqi62ID75f66mNCECgYEA/1zrB034l42B+k0+
+        1ELvVytl1pCX1xBGsGTdnBpMS77yTxzCNx4YkMlg7EBygoQN5NC1ziCV1JK08eAr
+        CY5YOaGEQNTRWXhWRLUy+Vyc4fxdsHWZSWBXzsRyJIoDuYLyiDRJIlOgRcuHv6jp
+        smH+uUBUlq4YEgK+rbdYA21EMNkCgYEA8ce32ZpSjaG6toAP8blT4XFSMgxHUvCX
+        7qQfHyPFKy0ANghF5hGgu3dMJ+GcHX3Z88PdwjFW+aABleaXKACvWZ+yK5bm9ijl
+        3r3G2yGdbhh0d482rsu4++Hm5g4Ib+JbUnLHX8qeD0px0obPACCHoV2YGCu28Jip
+        b9FxBPxOiY0CgYB0kBpsRCgULbDF61qhk0gi9xlOPsRAlBpgTDpoFgz7ilaazBrP
+        A/rcpD+Mt8JNVy/sYWSLiY468RiNS/D5NLOK4vI2ka5Z87cVN8zjzGWENikh8hwd
+        RU/vfvZHPYSDuoUwrQUxGREQqt31G4pJNbgLIZU7Do7IMd6N9yHCtq6oyQKBgCjA
+        RsaQcjWY+sVj1EwjtnWbCgWReDwMfS8lznELMGJUlWKGBnH+qp6uPtHB/vQhkCi7
+        7JachlJQm7POR8/gPa3XcspSBt+aiRP/3JJ2mfhCeu7j3o2bnLQnoSlJWDazajz9
+        R4lntzhQjdq0ChO1Z+bUxZvdUlo/AN/t5yS1+e7JAoGAegATfCsssVR0Fe07YK/a
+        +ufYuH4D0vw8cGzQrYYJKZlf1ra0DCKFZMBaIpNod3NFptQQeFYxIRylSfUtowx6
+        /0wrRGqmSe8nZbzeNH7ueYR9VLFOySpA8uH+EIhJfKnAMMPakbYtKJ5nSZaVamjV
+        URDbVszNO+xWdwug4sbJToU=
+        -----END PRIVATE KEY-----
+         */
+        // extracted modulus from key above
+        let modulus = vec![
+            0xf1, 0x2d, 0xb1, 0xe1, 0x0e, 0xca, 0x53, 0x45, 0x00, 0xcc, 0x34, 0x0d, 0xaf, 0x4e,
+            0xac, 0xe7, 0x2e, 0x30, 0x73, 0xb6, 0x0e, 0x95, 0x34, 0x78, 0xae, 0x4b, 0x78, 0x8c,
+            0xd5, 0xec, 0x4e, 0xf1, 0xc0, 0x99, 0xd9, 0x79, 0xe8, 0xaf, 0x08, 0xf8, 0x4a, 0x4d,
+            0x0b, 0xc0, 0x32, 0x60, 0xd4, 0xa2, 0x47, 0x76, 0x99, 0x10, 0x91, 0xff, 0x08, 0x60,
+            0xc6, 0x38, 0x06, 0x68, 0x13, 0x72, 0x26, 0x53, 0x86, 0x80, 0xe9, 0xd5, 0x50, 0x2a,
+            0x30, 0xd0, 0xd1, 0x1d, 0x1b, 0x98, 0x66, 0xc5, 0x51, 0x7c, 0x7c, 0x4f, 0x9d, 0x50,
+            0x29, 0x36, 0x8b, 0x34, 0x30, 0xe4, 0xde, 0xfc, 0x3d, 0xbe, 0x56, 0x47, 0xb1, 0x21,
+            0xd7, 0xfc, 0xb1, 0xc6, 0x80, 0x4a, 0xd0, 0x2a, 0x47, 0x45, 0xeb, 0x56, 0x9f, 0xda,
+            0xf8, 0x13, 0xc7, 0x16, 0x9f, 0x55, 0x6e, 0x6f, 0x4b, 0x40, 0x33, 0x22, 0x80, 0x45,
+            0xe0, 0xd6, 0x8a, 0xf3, 0x54, 0xb6, 0x0b, 0xfe, 0x63, 0x5a, 0x74, 0x1a, 0x6a, 0xca,
+            0xb8, 0xc5, 0x89, 0x1b, 0x32, 0xed, 0x7a, 0x8f, 0x3b, 0x8f, 0x13, 0xed, 0x30, 0xec,
+            0x66, 0x6d, 0xd2, 0xc4, 0xf5, 0x21, 0x5f, 0xef, 0x6d, 0x2c, 0xe0, 0xac, 0x91, 0x73,
+            0xf6, 0xfe, 0xd3, 0x31, 0x4a, 0x0c, 0x12, 0x0b, 0x57, 0x7f, 0xaf, 0xe9, 0xa7, 0xe5,
+            0x36, 0x93, 0xf8, 0xce, 0xc2, 0x0e, 0xd7, 0xa3, 0xcc, 0x1c, 0xb2, 0x20, 0x81, 0x4c,
+            0xbe, 0x01, 0x01, 0xb8, 0x3d, 0x59, 0xdb, 0xf3, 0xce, 0x9b, 0x86, 0xf3, 0xfd, 0x24,
+            0x71, 0xc2, 0xf7, 0xa0, 0x76, 0xf3, 0x5c, 0x4c, 0x26, 0xf4, 0x1e, 0x23, 0x63, 0x00,
+            0xf7, 0x64, 0xbd, 0x9e, 0x60, 0x38, 0xe4, 0x00, 0x5d, 0xf6, 0x0f, 0x6e, 0xe0, 0xca,
+            0x1a, 0xcd, 0x4c, 0x84, 0x5a, 0xb5, 0x1a, 0xd5, 0xb6, 0xe0, 0xc3, 0x79, 0x46, 0x9d,
+            0x2a, 0xd1, 0x08, 0x85,
+        ];
+        // 65537 = 0x010001, big-endian, 3 bytes
+        let public_exponent = [0x01u8, 0x00, 0x01];
+        let key_header = BCRYPT_RSAKEY_BLOB {
+            Magic: BCRYPT_RSAPUBLIC_MAGIC,
+            BitLength: 2048,
+            cbPublicExp: public_exponent.len() as u32,
+            cbModulus: modulus.len() as u32,
+            cbPrime1: 0,
+            cbPrime2: 0,
+        };
+
+        let mut public_key_bytes: Vec<u8> = unsafe {
+            std::slice::from_raw_parts(
+                std::ptr::from_ref(&key_header).cast::<u8>(),
+                std::mem::size_of::<BCRYPT_RSAKEY_BLOB>(),
+            )
+        }
+        .to_vec();
+        public_key_bytes.extend_from_slice(&public_exponent);
+        public_key_bytes.extend_from_slice(&modulus);
+
+        // generated with openssl
+        let signature = &[
+            0x7c, 0x72, 0xba, 0x71, 0x26, 0x00, 0xb5, 0xb8, 0xf6, 0x77, 0xf1, 0x01, 0x74, 0xfe,
+            0x27, 0x8a, 0xf8, 0x9b, 0x7e, 0xb7, 0x8b, 0x57, 0x9d, 0xa5, 0x97, 0x80, 0xf7, 0x75,
+            0x1c, 0xa3, 0x0d, 0x29, 0xae, 0x37, 0x53, 0x94, 0xab, 0x41, 0x7b, 0x4c, 0x54, 0x07,
+            0x0f, 0xf1, 0x84, 0x21, 0x03, 0x9e, 0x43, 0xbd, 0x22, 0xd6, 0x55, 0x67, 0x8d, 0x30,
+            0x20, 0xb5, 0xcc, 0xfb, 0x5e, 0xb2, 0x6d, 0x93, 0x78, 0xbc, 0x4f, 0xed, 0xae, 0x8a,
+            0x92, 0x6a, 0x1e, 0x4a, 0x32, 0x93, 0xb9, 0x2b, 0xb5, 0xb5, 0xf4, 0x25, 0xb4, 0x27,
+            0xa3, 0xab, 0xfe, 0x1d, 0x10, 0x28, 0x36, 0xf9, 0x5b, 0xe3, 0xd0, 0x45, 0xca, 0x71,
+            0xd7, 0x7d, 0xc1, 0x81, 0xa0, 0x3d, 0x9e, 0x90, 0xae, 0xec, 0xd6, 0x39, 0xa8, 0x29,
+            0x9e, 0xe8, 0x34, 0xde, 0x60, 0xe6, 0x66, 0xdd, 0x9b, 0x20, 0x5f, 0x38, 0x8d, 0x3c,
+            0xc5, 0x8b, 0x3f, 0x20, 0xfc, 0xcb, 0xf5, 0xcc, 0xde, 0x57, 0x6a, 0x24, 0x07, 0xe9,
+            0xfd, 0x2d, 0x43, 0x1f, 0x57, 0xce, 0x7e, 0xc2, 0x2e, 0x5b, 0xeb, 0x44, 0x4d, 0x56,
+            0x9f, 0xc7, 0x45, 0x97, 0xfd, 0x6b, 0xec, 0x30, 0xfa, 0xe4, 0x6b, 0x2b, 0x4b, 0xf3,
+            0x70, 0xc7, 0xec, 0x1a, 0xca, 0xf9, 0xa0, 0xea, 0x6c, 0x8e, 0x1d, 0x29, 0xaf, 0x44,
+            0x0c, 0x72, 0x80, 0xca, 0x96, 0x15, 0xab, 0x3f, 0xb0, 0x52, 0xcc, 0x8a, 0xbb, 0x73,
+            0xbc, 0x47, 0x96, 0x20, 0xd2, 0xe0, 0x3c, 0xa7, 0x93, 0x3a, 0x87, 0x82, 0x5e, 0xc3,
+            0x1c, 0xa5, 0x68, 0x1f, 0x02, 0x9e, 0x0d, 0x86, 0x5a, 0xce, 0xb8, 0x16, 0xa0, 0x2c,
+            0x57, 0xa2, 0x22, 0xaf, 0x17, 0xd4, 0xd1, 0xa5, 0x82, 0xee, 0x99, 0x51, 0xdd, 0xda,
+            0xc6, 0xfa, 0x02, 0x3c, 0xb3, 0x90, 0x26, 0xaf, 0x55, 0xaf, 0xdf, 0x47, 0xd6, 0x7c,
+            0x7e, 0x41, 0x17, 0x08,
+        ];
+
+        let verify_key = VerifyingKey {
+            cbPublicKey: public_key_bytes.len() as u32,
+            pbPublicKey: NonNull::new(public_key_bytes.as_mut_ptr().cast()).unwrap(),
+        };
+        verify_signature(&verify_key, digest, signature).expect("a signature to verify properly");
+    }
+}