pkcs1v15::signature::Signature serdect implementation

Cargo.toml

@@ -25,6 +25,7 @@ pkcs8 = { version = "=0.11.0-pre.0", default-features = false, features = ["allo
 signature = { version = "=2.3.0-pre.3", default-features = false , features = ["alloc", "digest", "rand_core"] }
 spki = { version = "=0.8.0-pre.0", default-features = false, features = ["alloc"] }
 zeroize = { version = "1.5", features = ["alloc"] }
+serdect = "0.2.0"
 
 # optional dependencies
 sha1 = { version = "=0.11.0-pre.3", optional = true, default-features = false, features = ["oid"] }
@@ -33,6 +34,7 @@ serde = { version = "1.0.184", optional = true, default-features = false, featur
 
 [dev-dependencies]
 base64ct = { version = "1", features = ["alloc"] }
+serde_json = "1.0.114"
 hex-literal = "0.4.1"
 proptest = "1"
 serde_test = "1.0.89"

src/pkcs1v15/signature.rs

@@ -4,7 +4,7 @@ use crate::algorithms::pad::uint_to_be_pad;
 use ::signature::SignatureEncoding;
 use alloc::{boxed::Box, string::ToString};
 #[cfg(feature = "serde")]
-use serde::{Deserialize, Serialize};
+use serdect::serde::{Deserialize, Serialize};
 use core::fmt::{Debug, Display, Formatter, LowerHex, UpperHex};
 use num_bigint::BigUint;
 use spki::{
@@ -82,3 +82,29 @@ impl Display for Signature {
         write!(f, "{:X}", self)
     }
 }
+
+#[cfg(feature = "serde")]
+impl Serialize for Signature {
+    fn serialize<S>(&self, serializer: S) -> core::result::Result<S::Ok, S::Error>
+    where
+        S: serdect::serde::Serializer,
+    {
+        serdect::slice::serialize_hex_lower_or_bin(&self.inner.to_bytes_be(), serializer)
+    }
+}
+
+#[cfg(feature = "serde")]
+impl<'de> Deserialize<'de> for Signature {
+    fn deserialize<D>(deserializer: D) -> core::result::Result<Self, D::Error>
+    where
+        D: serdect::serde::Deserializer<'de>,
+    {
+        let bytes = serdect::slice::deserialize_hex_or_bin_vec(deserializer)?;
+        let inner = BigUint::from_bytes_be(&bytes);
+
+        Ok(Self {
+            inner,
+            len: bytes.len(),
+        })
+    }
+}