reduce unnecessary re-exports

Update dryoc to 0.5
simplify byte encodings, use prefixes for crypto data types
2023-11-15 01:46:48 +01:00 · 2023-11-15 01:44:29 +01:00 · 2023-11-15 01:35:21 +01:00 · 2023-11-15 00:18:46 +01:00 · 2023-11-15 00:16:02 +01:00 · 2023-11-15 00:13:43 +01:00
13 changed files with 944 additions and 296 deletions
--- a/.gitignore
+++ b/.gitignore
@ -1,2 +1 @@
 /target
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--- a/Cargo.toml
+++ b/Cargo.toml
@ -2,7 +2,7 @@
 name = "nettext"
 description = "A text-based data format for cryptographic network protocols"
 authors = ["Alex Auvolat <alex@adnab.me>"]
-version = "0.3.0"
+version = "0.4.1"
 edition = "2021"
 license = "AGPL-3.0"
 readme = "README.md"
@ -12,9 +12,10 @@ readme = "README.md"
 [dependencies]
 nom = "7.1"
 base64 = "0.13"
+hex = "0.4"
 err-derive = "0.3"

-dryoc = { version = "0.4", optional = true }
+dryoc = { version = "0.5", optional = true }
 serde = { version = "1.0", optional = true, features = ["derive"] }

 [features]
--- a/README.md
+++ b/README.md
@ -13,7 +13,7 @@ A text-based data format for cryptographic network protocols.

 A term can be of any of the following kinds:

- a string, which may contain only ASCII alphanumeric terms and `.-_*?`
+- a string, which may contain only ASCII alphanumeric characters and a limited subset of other ASCII characters that may not include characters used to represent other kinds of terms
 - a dict, which maps strings (as defined above) to any term type
 - a list, which may contain any number of any kind of terms (can be mixed)
 - a sequence, consistuted of at least two of the above (can be mixed), simply separated by whitespace; sequences cannot be nested
@ -22,15 +22,15 @@ Dicts are represented as follows:

 ```
 {
-    key1 = value1,
+    key1 = value1;
    key2 = value2
 }
 ```

-Dicts are represented as follows:
+Lists are represented as follows:

 ```
-[ term1, term2 ]
+[ term1; term2 ]
 ```

 Sequences are represented as follows:
@ -43,9 +43,9 @@ As a consequence, complex data structures can be defined as follows:

 ```
 SEND MESSAGE {
-    topic = blah,
+    topic = blah;
    to = [
-        TOPIC hello,
+        TOPIC hello;
        USER john
    ],
    body = blah blah
@ -82,6 +82,30 @@ Terms can be interpreted in a number of different ways, depending on the context

 Terms further have mappings as different data types:

- BYTES: if the term maps as a STRING, decode it using base64
 - INT: if the term maps as a STRING, decode it as an integer written in decimal notation
+- BYTES: if the term maps as a STRING, decode it using base64. Since a STRING cannot be empty, the string `-` is used to represent an empty byte string.
+- Cryptographic data types (see below)
+
+## Cryptographic data types
+
+Cryptographic values such as keys, hashes, signatures, etc. are encoded
+as STRING with a prefix indicating the algorithm used, followed by ":",
+followed by the base64-encoded value.
+
+Prefixes are as follows:
+
+- `pk.box:` public key for NaCl's box API
+- `sk.box:` secret key for NaCl's box API
+- `sk.sbox:` secret key for NaCl's secretbox API
+- `h.sha256:` sha256 hash
+- `h.sha512:` sha512 hash
+- `h.sha3:` sha3 hash
+- `h.b2:` blake2b hash
+- `h.b3:` blake3 hash
+- `sig.ed25519:` ed25519 signature
+- `pk.ed25519:` ed25519 public signing key
+- `sk.ed25519:` ed25519 secret signing key
+
+More can be added.
+
 - HASH, PUBKEY, SECKEY, SIGNATURE, ENCKEY, DECKEY, SYMKEY: a bunch of things that interpret BYTES as specific cryptographic items
--- a/src/crypto/mod.rs
+++ b/src/crypto/mod.rs
@ -1,48 +1,158 @@
 //! Helpers to use cryptographic data types in nettext

-pub use dryoc::*;
+pub use dryoc;

-use dryoc::types::{Bytes, StackByteArray};
+use dryoc::types::Bytes;
+use dryoc::*;

+use crate::dec;
 use crate::enc;

-pub type SigningKeyPair = sign::SigningKeyPair<sign::PublicKey, sign::SecretKey>;
+const BM_HASH: &str = "h.b2";

-impl<const N: usize> enc::Encode for StackByteArray<N> {
-    fn term(&self) -> enc::Result<'_> {
-        Ok(enc::bytes(self.as_slice()))
+const BM_SIGNATURE: &str = "sig.ed25519";
+const BM_SIGN_KEYPAIR: &str = "sk.ed25519";
+const BM_SIGN_PUBKEY: &str = "pk.ed25519";
+
+// ---- types ----
+
+#[derive(Eq, PartialEq, Clone, Debug)]
+pub struct Hash(pub generichash::Hash);
+
+#[derive(Eq, PartialEq, Clone, Debug)]
+pub struct Signature(pub sign::Signature);
+#[derive(Eq, PartialEq, Clone, Debug)]
+pub struct SigningPublicKey(pub sign::PublicKey);
+#[derive(PartialEq, Clone, Debug)]
+pub struct SigningKeyPair(pub sign::SigningKeyPair<sign::PublicKey, sign::SecretKey>);
+
+impl SigningKeyPair {
+    /// Return the public key of this keypair
+    pub fn public_key(&self) -> SigningPublicKey {
+        SigningPublicKey(self.0.public_key.clone())
    }
 }

-impl enc::Encode for sign::SigningKeyPair<sign::PublicKey, sign::SecretKey> {
+// ---- encoding ----
+
+impl enc::Encode for Hash {
    fn term(&self) -> enc::Result<'_> {
-        Ok(enc::bytes(self.secret_key.as_slice()))
+        enc::marked_bytes(BM_HASH, self.0.as_slice())
    }
 }

-// ---- helpers ----
+impl enc::Encode for Signature {
+    fn term(&self) -> enc::Result<'_> {
+        enc::marked_bytes(BM_SIGNATURE, self.0.as_slice())
+    }
+}
+
+impl enc::Encode for SigningPublicKey {
+    fn term(&self) -> enc::Result<'_> {
+        enc::marked_bytes(BM_SIGN_PUBKEY, self.0.as_slice())
+    }
+}
+
+impl enc::Encode for SigningKeyPair {
+    fn term(&self) -> enc::Result<'_> {
+        enc::marked_bytes(BM_SIGN_KEYPAIR, self.0.secret_key.as_slice())
+    }
+}
+
+// ---- calculating hashes, signatures, etc ----

 /// Compute the hash of a payload with default dryoc parameters and optionnal key
-pub fn compute_hash(bytes: &[u8], key: Option<&[u8; 32]>) -> generichash::Hash {
-    generichash::GenericHash::hash_with_defaults(bytes, key).unwrap()
+pub fn compute_hash(bytes: &[u8], key: Option<&[u8; 32]>) -> Hash {
+    Hash(generichash::GenericHash::hash_with_defaults(bytes, key).unwrap())
+}
+
+/// Generate a new signing keypair
+pub fn gen_signing_keypair() -> SigningKeyPair {
+    SigningKeyPair(sign::SigningKeyPair::gen_with_defaults())
 }

 /// Compute the ed25519 signature of a message using a secret key
-pub fn compute_signature(message: &[u8], secret_key: &sign::SecretKey) -> sign::Signature {
-    SigningKeyPair::from_secret_key(secret_key.clone())
-        .sign_with_defaults(message)
-        .unwrap()
-        .into_parts()
-        .0
+pub fn compute_signature(message: &[u8], keypair: &SigningKeyPair) -> Signature {
+    Signature(
+        keypair
+            .0
+            .sign_with_defaults(message)
+            .unwrap()
+            .into_parts()
+            .0,
+    )
 }

 /// Verify the ed25519 signature of a message using a public key
 pub fn verify_signature(
-    signature: &sign::Signature,
+    signature: &Signature,
    message: &[u8],
-    public_key: &sign::PublicKey,
+    public_key: &SigningPublicKey,
 ) -> bool {
-    sign::SignedMessage::from_parts(signature.clone(), message)
-        .verify(public_key)
+    sign::SignedMessage::from_parts(signature.0.clone(), message.to_vec())
+        .verify(&public_key.0)
        .is_ok()
 }
+
+// ---- decode helpers ----
+
+pub trait CryptoDec {
+    /// Try to interpret this string as a Blake2b512 digest
+    /// (32-bytes base64 encoded, prefixed by `h.b2:`)
+    ///
+    /// Example:
+    ///
+    /// ```
+    /// use nettext::dec::decode;
+    /// use nettext::crypto::{compute_hash, CryptoDec};
+    ///
+    /// let term = decode(b"{
+    ///     message = hello;
+    ///     hash = h.b2:Mk3PAn3UowqTLEQfNlol6GsXPe-kuOWJSCU0cbgbcs8;
+    /// }").unwrap();
+    /// let [msg, hash] = term.dict_of(["message", "hash"], false).unwrap();
+    /// let expected_hash = compute_hash(msg.raw(), None);
+    /// assert_eq!(hash.hash().unwrap(), expected_hash);
+    /// ```
+    fn hash(&self) -> Result<Hash, dec::TypeError>;
+
+    /// Try to interpret this string as an ed25519 signature
+    /// (64 bytes base64 encoded, prefixed by `sig.ed25519:`)
+    fn signature(&self) -> Result<Signature, dec::TypeError>;
+
+    /// Try to interpret this string as an ed25519 keypair
+    /// (64 bytes base64 encoded, prefixed by `sk.ed25519:`)
+    fn keypair(&self) -> Result<SigningKeyPair, dec::TypeError>;
+
+    /// Try to interpret this string as an ed25519 public key
+    /// (32 bytes base64 encoded, prefixed by `pk.ed25519:`)
+    fn public_key(&self) -> Result<SigningPublicKey, dec::TypeError>;
+}
+
+impl<'a, 'b> CryptoDec for dec::Term<'a, 'b> {
+    fn hash(&self) -> Result<Hash, dec::TypeError> {
+        Ok(Hash(generichash::Hash::from(
+            self.marked_bytes_exact(BM_HASH)?,
+        )))
+    }
+
+    /// Try to interpret this string as an ed25519 signature (64 bytes base64 encoded)
+    fn signature(&self) -> Result<Signature, dec::TypeError> {
+        Ok(Signature(sign::Signature::from(
+            self.marked_bytes_exact(BM_SIGNATURE)?,
+        )))
+    }
+
+    fn keypair(&self) -> Result<SigningKeyPair, dec::TypeError> {
+        let secret_key = sign::SecretKey::from(self.marked_bytes_exact(BM_SIGN_KEYPAIR)?);
+        Ok(SigningKeyPair(sign::SigningKeyPair::from_secret_key(
+            secret_key,
+        )))
+    }
+
+    fn public_key(&self) -> Result<SigningPublicKey, dec::TypeError> {
+        Ok(SigningPublicKey(sign::PublicKey::from(
+            self.marked_bytes_exact(BM_SIGN_PUBKEY)?,
+        )))
+    }
+}
--- a/src/dec/decode.rs
+++ b/src/dec/decode.rs
@ -138,11 +138,11 @@ mod tests {

    #[test]
    fn simple_dict() {
-        let bytes = b" { aze = hello, by = bojzkz  pipo,    ccde = ke } ";
+        let bytes = b" { aze = hello; by = bojzkz  pipo;    ccde = ke } ";
        assert_eq!(
            decode(bytes),
            Ok(AnyTerm::Dict(
-                b"{ aze = hello, by = bojzkz  pipo,    ccde = ke }",
+                b"{ aze = hello; by = bojzkz  pipo;    ccde = ke }",
                [
                    (&b"aze"[..], AnyTerm::Str(b"hello")),
                    (
@ -163,11 +163,11 @@ mod tests {

    #[test]
    fn simple_dict_2() {
-        let bytes = b" { aze = hello, by = bojzkz  pipo  ,    ccde = ke  , } ";
+        let bytes = b" { aze = hello; by = bojzkz  pipo  ;    ccde = ke  ; } ";
        assert_eq!(
            decode(bytes),
            Ok(AnyTerm::Dict(
-                b"{ aze = hello, by = bojzkz  pipo  ,    ccde = ke  , }",
+                b"{ aze = hello; by = bojzkz  pipo  ;    ccde = ke  ; }",
                [
                    (&b"aze"[..], AnyTerm::Str(b"hello")),
                    (
@ -188,11 +188,11 @@ mod tests {

    #[test]
    fn simple_list() {
-        let bytes = b" [ hello, bojzkz  pipo,    ke ] ";
+        let bytes = b" [ hello; bojzkz  pipo;    ke ] ";
        assert_eq!(
            decode(bytes),
            Ok(AnyTerm::List(
-                b"[ hello, bojzkz  pipo,    ke ]",
+                b"[ hello; bojzkz  pipo;    ke ]",
                [
                    AnyTerm::Str(b"hello"),
                    AnyTerm::Seq(
@ -209,11 +209,11 @@ mod tests {

    #[test]
    fn simple_list_2() {
-        let bytes = b" [ hello, bojzkz  pipo  ,    ke  , ] ";
+        let bytes = b" [ hello; bojzkz  pipo  ;    ke  ; ] ";
        assert_eq!(
            decode(bytes),
            Ok(AnyTerm::List(
-                b"[ hello, bojzkz  pipo  ,    ke  , ]",
+                b"[ hello; bojzkz  pipo  ;    ke  ; ]",
                [
                    AnyTerm::Str(b"hello"),
                    AnyTerm::Seq(
@ -243,7 +243,7 @@ mod tests {

    #[test]
    fn real_world_2() {
-        let bytes = b"STANCE sthash stsign { author = alexpubkey, height = 12, parent = parenthash, data = MESSAGE { text = hello } }";
+        let bytes = b"STANCE sthash stsign { author = alexpubkey; height = 12; parent = parenthash; data = MESSAGE { text = hello } }";
        assert_eq!(
            decode(bytes),
            Ok(AnyTerm::Seq(
@ -252,7 +252,7 @@ mod tests {
 					NonSeqTerm::Str(b"STANCE"),
 					NonSeqTerm::Str(b"sthash"),
 					NonSeqTerm::Str(b"stsign"),
-					NonSeqTerm::Dict(b"{ author = alexpubkey, height = 12, parent = parenthash, data = MESSAGE { text = hello } }",
+					NonSeqTerm::Dict(b"{ author = alexpubkey; height = 12; parent = parenthash; data = MESSAGE { text = hello } }",
 						[
 							(&b"author"[..], AnyTerm::Str(b"alexpubkey")),
 							(&b"height"[..], AnyTerm::Str(b"12")),
@ -279,7 +279,7 @@ mod tests {

    #[test]
    fn real_world_3() {
-        let bytes = b"[ USER john, USER luke, GROUP strategy { owner = USER john, members = [ USER john, USER luke ] } ]";
+        let bytes = b"[ USER john; USER luke; GROUP strategy { owner = USER john; members = [ USER john; USER luke ] } ]";
        let user_john = AnyTerm::Seq(
            b"USER john",
            vec![NonSeqTerm::Str(b"USER"), NonSeqTerm::Str(b"john")],
@ -297,18 +297,18 @@ mod tests {
                    user_john.clone(),
                    user_luke.clone(),
                    AnyTerm::Seq(
-                        b"GROUP strategy { owner = USER john, members = [ USER john, USER luke ] }",
+                        b"GROUP strategy { owner = USER john; members = [ USER john; USER luke ] }",
                        vec![
                            NonSeqTerm::Str(b"GROUP"),
                            NonSeqTerm::Str(b"strategy"),
                            NonSeqTerm::Dict(
-                                b"{ owner = USER john, members = [ USER john, USER luke ] }",
+                                b"{ owner = USER john; members = [ USER john; USER luke ] }",
                                [
                                    (&b"owner"[..], user_john.clone()),
                                    (
                                        &b"members"[..],
                                        AnyTerm::List(
-                                            b"[ USER john, USER luke ]",
+                                            b"[ USER john; USER luke ]",
                                            vec![user_john, user_luke,]
                                        )
                                    )
--- a/src/dec/error.rs
+++ b/src/dec/error.rs
@ -8,6 +8,9 @@ pub enum TypeError {
    /// The term could not be decoded in the given type
    #[error(display = "Not a {}", _0)]
    WrongType(&'static str),
+    /// The term did not have the correct marker
+    #[error(display = "Byte marker was not {}", _0)]
+    WrongMarker(&'static str),

    /// The term is not an array of the requested length
    #[error(display = "Expected {} items, got {}", _0, _1)]
--- a/src/dec/mod.rs
+++ b/src/dec/mod.rs
@ -5,9 +5,6 @@ mod error;

 use std::collections::HashMap;

-#[cfg(any(feature = "dryoc"))]
-use crate::crypto;
-
 use crate::debug;

 pub use decode::*;
@ -101,8 +98,8 @@ impl<'a, 'b> Term<'a, 'b> {
    /// ```
    /// use nettext::dec::decode;
    ///
-    /// let term = decode(b"hello { a = x, b = y }").unwrap();
-    /// assert_eq!(term.raw_str().unwrap(), "hello { a = x, b = y }");
+    /// let term = decode(b"hello { a = x; b = y }").unwrap();
+    /// assert_eq!(term.raw_str().unwrap(), "hello { a = x; b = y }");
    /// ```
    pub fn raw_str(&self) -> Result<&'a str, TypeError> {
        Ok(std::str::from_utf8(self.0.raw())?)
@ -266,7 +263,7 @@ impl<'a, 'b> Term<'a, 'b> {
    /// ```
    /// use nettext::dec::decode;
    ///
-    /// let term = decode(b"{ k1 = v1, k2 = v2 }").unwrap();
+    /// let term = decode(b"{ k1 = v1; k2 = v2 }").unwrap();
    /// let dict = term.dict().unwrap();
    /// assert_eq!(dict.get("k1").unwrap().str().unwrap(), "v1");
    /// assert_eq!(dict.get("k2").unwrap().str().unwrap(), "v2");
@ -292,7 +289,7 @@ impl<'a, 'b> Term<'a, 'b> {
    /// ```
    /// use nettext::dec::decode;
    ///
-    /// let term = decode(b"{ k1 = v1, k2 = v2, k3 = v3 }").unwrap();
+    /// let term = decode(b"{ k1 = v1; k2 = v2; k3 = v3 }").unwrap();
    /// let [s1, s2] = term.dict_of(["k1", "k2"], true).unwrap();
    /// assert_eq!(s1.str().unwrap(), "v1");
    /// assert_eq!(s2.str().unwrap(), "v2");
@ -334,7 +331,7 @@ impl<'a, 'b> Term<'a, 'b> {
    /// ```
    /// use nettext::dec::decode;
    ///
-    /// let term = decode(b"{ k1 = v1, k2 = v2, k4 = v4 }").unwrap();
+    /// let term = decode(b"{ k1 = v1; k2 = v2; k4 = v4 }").unwrap();
    /// let [s1, s2, s3] = term.dict_of_opt(["k1", "k2", "k3"], true).unwrap();
    /// assert_eq!(s1.unwrap().str().unwrap(), "v1");
    /// assert_eq!(s2.unwrap().str().unwrap(), "v2");
@ -370,7 +367,7 @@ impl<'a, 'b> Term<'a, 'b> {
    /// ```
    /// use nettext::dec::decode;
    ///
-    /// let term2 = decode(b"[ hello, world ]").unwrap();
+    /// let term2 = decode(b"[ hello; world ]").unwrap();
    /// let seq2 = term2.list().unwrap();
    /// assert_eq!(seq2.len(), 2);
    /// assert_eq!(seq2[0].str().unwrap(), "hello");
@ -378,8 +375,10 @@ impl<'a, 'b> Term<'a, 'b> {
    /// ```
    pub fn list(&self) -> Result<Vec<Term<'a, '_>>, TypeError> {
        match self.0.mkref() {
-            AnyTerm::ListRef(_r, l) => Ok(l.iter().map(|x| Term(x.mkref().into())).collect::<Vec<_>>()),
-			_ => Err(TypeError::WrongType("LIST")),
+            AnyTerm::ListRef(_r, l) => {
+                Ok(l.iter().map(|x| Term(x.mkref().into())).collect::<Vec<_>>())
+            }
+            _ => Err(TypeError::WrongType("LIST")),
        }
    }

@ -418,7 +417,7 @@ impl<'a, 'b> Term<'a, 'b> {
        };
        match self.0.mkref() {
            AnyTerm::Str(encoded) => {
-                if encoded == b"." {
+                if encoded == b"-" {
                    Ok(vec![])
                } else {
                    decode(encoded)
@ -440,68 +439,40 @@ impl<'a, 'b> Term<'a, 'b> {
    }

    /// Try to interpret this string as base64-encoded bytes,
-    /// with an exact length.
+    /// with a marker prefix and an exact byte length.
+    /// This is typically used for cryptographic data types such as hashes,
+    /// keys, signatures, ...
    ///
    /// Example:
    ///
    /// ```
    /// use nettext::dec::decode;
    ///
-    /// let term = decode(b"aGVsbG8sIHdvcmxkIQ").unwrap();
-    /// assert_eq!(&term.bytes_exact::<13>().unwrap(), b"hello, world!");
+    /// let term = decode(b"test:aGVsbG8sIHdvcmxkIQ").unwrap();
+    /// assert_eq!(&term.marked_bytes_exact::<13>("test").unwrap(), b"hello, world!");
    /// ```
-    pub fn bytes_exact<const N: usize>(&self) -> Result<[u8; N], TypeError> {
-        let bytes = self.bytes()?;
-        let bytes_len = bytes.len();
-        bytes
-            .try_into()
-            .map_err(|_| TypeError::WrongLength(bytes_len, N))
-    }
-}
-
-// ---- CRYPTO HELPERS ----
-
-#[cfg(feature = "dryoc")]
-impl<'a, 'b> Term<'a, 'b> {
-    /// Try to interpret this string as a Blake2b512 digest (32-bytes base64 encoded)
-    ///
-    /// Example:
-    ///
-    /// ```
-    /// use nettext::dec::decode;
-    /// use nettext::crypto::generichash::GenericHash;
-    ///
-    /// let term = decode(b"{
-    ///     message = hello,
-    ///     hash = Mk3PAn3UowqTLEQfNlol6GsXPe-kuOWJSCU0cbgbcs8,
-    /// }").unwrap();
-    /// let [msg, hash] = term.dict_of(["message", "hash"], false).unwrap();
-    /// let expected_hash = GenericHash::hash_with_defaults(msg.raw(), None::<&Vec<u8>>).unwrap();
-    /// assert_eq!(hash.hash().unwrap(), expected_hash);
-    /// ```
-    pub fn hash(&self) -> Result<crypto::generichash::Hash, TypeError> {
-        Ok(crypto::generichash::Hash::from(self.bytes_exact()?))
-    }
-
-    /// Try to interpret this string as an ed25519 keypair (64 bytes base64 encoded)
-    pub fn keypair(&self) -> Result<crypto::SigningKeyPair, TypeError> {
-        let secret_key = crypto::sign::SecretKey::from(self.bytes_exact()?);
-        Ok(crypto::SigningKeyPair::from_secret_key(secret_key))
-    }
-
-    /// Try to interpret this string as an ed25519 public key (32 bytes base64 encoded)
-    pub fn public_key(&self) -> Result<crypto::sign::PublicKey, TypeError> {
-        Ok(crypto::sign::PublicKey::from(self.bytes_exact()?))
-    }
-
-    /// Try to interpret this string as an ed25519 secret key (32 bytes base64 encoded)
-    pub fn secret_key(&self) -> Result<crypto::sign::SecretKey, TypeError> {
-        Ok(crypto::sign::SecretKey::from(self.bytes_exact()?))
-    }
-
-    /// Try to interpret this string as an ed25519 signature (64 bytes base64 encoded)
-    pub fn signature(&self) -> Result<crypto::sign::Signature, TypeError> {
-        Ok(crypto::sign::Signature::from(self.bytes_exact()?))
+    pub fn marked_bytes_exact<const N: usize>(
+        &self,
+        marker: &'static str,
+    ) -> Result<[u8; N], TypeError> {
+        let mkr = marker.as_bytes();
+        match &self.0 {
+            AnyTerm::Str(s)
+                if s.len() >= mkr.len() + 2 && &s[..mkr.len()] == mkr && s[mkr.len()] == b':' =>
+            {
+                let bytes = match &s[mkr.len() + 1..] {
+                    b"-" => vec![],
+                    bytes => base64::decode_config(bytes, base64::URL_SAFE_NO_PAD)
+                        .map_err(|_| TypeError::WrongType("BYTES"))?,
+                };
+                let bytes_len = bytes.len();
+                bytes
+                    .try_into()
+                    .map_err(|_| TypeError::WrongLength(bytes_len, N))
+            }
+            AnyTerm::Str(_) => Err(TypeError::WrongMarker(marker)),
+            _ => Err(TypeError::WrongType("BYTES")),
+        }
    }
 }

--- a/src/enc/mod.rs
+++ b/src/enc/mod.rs
@ -11,7 +11,7 @@
 //!     dict([
 //!         ("a", string("hello").unwrap()),
 //!         ("b", string("world").unwrap()),
-//!         ("c", raw(b"{ a = 12, b = 42 }").unwrap()),
+//!         ("c", raw(b"{ a = 12; b = 42 }").unwrap()),
 //!         ("d", bytes_split(&((0..128u8).collect::<Vec<_>>()))),
 //!     ]).unwrap(),
 //! ]).unwrap().encode();
@ -23,6 +23,7 @@ use std::borrow::{Borrow, Cow};
 use std::collections::HashMap;

 use crate::dec::{self, decode};
+use crate::*;
 use crate::{is_string_char, is_whitespace};

 pub use error::Error;
@ -87,7 +88,7 @@ pub fn string_owned(s: String) -> Result<'static> {
 /// ```
 /// use nettext::enc::*;
 ///
-/// assert_eq!(raw(b"Hello { a = b, c = d}  .").unwrap().encode(), b"Hello { a = b, c = d}  .");
+/// assert_eq!(raw(b"Hello { a = b; c = d}  .").unwrap().encode(), b"Hello { a = b; c = d}  .");
 /// ```
 pub fn raw(bytes: &[u8]) -> Result<'_> {
    if decode(bytes).is_err() {
@ -96,6 +97,84 @@ pub fn raw(bytes: &[u8]) -> Result<'_> {
    Ok(Term(T::Str(bytes)))
 }

+/// Term corresponding to a byte slice,
+/// encoding using base64 url-safe encoding without padding.
+/// Since empty strings are not possible in nettext,
+/// an empty byte string is encoded as the special string `-`.
+///
+/// Example:
+///
+/// ```
+/// use nettext::enc::*;
+///
+/// assert_eq!(bytes(b"").encode(), b"-");
+/// assert_eq!(bytes(b"hello, world!").encode(), b"aGVsbG8sIHdvcmxkIQ");
+/// ```
+pub fn bytes(bytes: &[u8]) -> Term<'static> {
+    if bytes.is_empty() {
+        Term(T::Str(b"-"))
+    } else {
+        Term(T::OwnedStr(
+            base64::encode_config(bytes, base64::URL_SAFE_NO_PAD).into_bytes(),
+        ))
+    }
+}
+
+/// Same as `bytes()`, but splits the byte slice in 48-byte chunks
+/// and encodes each chunk separately, putting them in a sequence of terms.
+/// Usefull for long byte slices to have cleaner representations.
+pub fn bytes_split(bytes: &[u8]) -> Term<'static> {
+    if bytes.is_empty() {
+        Term(T::Str(b"-"))
+    } else {
+        let chunks = bytes
+            .chunks(48)
+            .map(|b| T::OwnedStr(base64::encode_config(b, base64::URL_SAFE_NO_PAD).into_bytes()))
+            .collect::<Vec<_>>();
+        if chunks.len() > 1 {
+            Term(T::Seq(chunks))
+        } else {
+            Term(chunks.into_iter().next().unwrap())
+        }
+    }
+}
+
+/// Term corresponding to a byte slice,
+/// encoding using base64 url-safe encoding without padding,
+/// with a prefix used to identify its content type.
+/// The marker prefix is typically used in crypto settings to identify
+/// a cryptographic protocol or algorithm; it may not contain the `:` character.
+///
+/// Example:
+///
+/// ```
+/// use nettext::enc::*;
+///
+/// assert_eq!(marked_bytes("mytype", b"").unwrap().encode(), b"mytype:-");
+/// assert_eq!(marked_bytes("mytype", b"hello, world!").unwrap().encode(), b"mytype:aGVsbG8sIHdvcmxkIQ");
+/// ```
+pub fn marked_bytes(marker: &str, bytes: &[u8]) -> Result<'static> {
+    for c in marker.as_bytes().iter() {
+        if !is_string_char(*c) || *c == b':' {
+            return Err(Error::InvalidCharacter(*c));
+        }
+    }
+    if bytes.is_empty() {
+        Ok(Term(T::OwnedStr(format!("{}:-", marker).into_bytes())))
+    } else {
+        Ok(Term(T::OwnedStr(
+            format!(
+                "{}:{}",
+                marker,
+                base64::encode_config(bytes, base64::URL_SAFE_NO_PAD)
+            )
+            .into_bytes(),
+        )))
+    }
+}
+
+// ---- composed terms -----
+
 /// Term corresponding to a sequence of terms. Subsequences are banned and will raise an error.
 ///
 /// ```
@ -137,7 +216,7 @@ pub fn seq_flatten<'a, I: IntoIterator<Item = Term<'a>>>(terms: I) -> Term<'a> {
 /// assert_eq!(list([
 ///     string("Hello").unwrap(),
 ///     string("world").unwrap()
-/// ]).encode(), b"[\n  Hello,\n  world,\n]");
+/// ]).encode(), b"[\n  Hello;\n  world;\n]");
 /// ```
 pub fn list<'a, I: IntoIterator<Item = Term<'a>>>(terms: I) -> Term<'a> {
    let terms = terms.into_iter().map(|x| x.0).collect::<Vec<_>>();
@ -152,7 +231,7 @@ pub fn list<'a, I: IntoIterator<Item = Term<'a>>>(terms: I) -> Term<'a> {
 /// assert_eq!(dict([
 ///     ("a", string("Hello").unwrap()),
 ///     ("b", string("world").unwrap())
-/// ]).unwrap().encode(), b"{\n  a = Hello,\n  b = world,\n}");
+/// ]).unwrap().encode(), b"{\n  a = Hello;\n  b = world;\n}");
 /// ```
 pub fn dict<'a, I: IntoIterator<Item = (&'a str, Term<'a>)>>(pairs: I) -> Result<'a> {
    let mut tmp = HashMap::new();
@ -164,38 +243,6 @@ pub fn dict<'a, I: IntoIterator<Item = (&'a str, Term<'a>)>>(pairs: I) -> Result
    Ok(Term(T::Dict(tmp)))
 }

-/// Term corresponding to a byte slice,
-/// encoding using base64 url-safe encoding without padding
-///
-/// Example:
-///
-/// ```
-/// use nettext::enc::*;
-///
-/// assert_eq!(bytes(b"hello, world!").encode(), b"aGVsbG8sIHdvcmxkIQ");
-/// ```
-pub fn bytes(bytes: &[u8]) -> Term<'static> {
-    Term(T::OwnedStr(
-        base64::encode_config(bytes, base64::URL_SAFE_NO_PAD).into_bytes(),
-    ))
-}
-
-/// Same as `bytes()`, but splits the byte slice in 48-byte chunks
-/// and encodes each chunk separately, putting them in a sequence of terms.
-/// Usefull for long byte slices to have cleaner representations,
-/// mainly usefull for dictionnary keys.
-pub fn bytes_split(bytes: &[u8]) -> Term<'static> {
-    let chunks = bytes
-        .chunks(48)
-        .map(|b| T::OwnedStr(base64::encode_config(b, base64::URL_SAFE_NO_PAD).into_bytes()))
-        .collect::<Vec<_>>();
-    if chunks.len() > 1 {
-        Term(T::Seq(chunks))
-    } else {
-        Term(chunks.into_iter().next().unwrap_or(T::Str(b".")))
-    }
-}
-
 impl<'a> Term<'a> {
    /// Append a term to an existing term.
    /// Transforms the initial term into a seq if necessary.
@ -262,6 +309,13 @@ impl<'a> Term<'a> {
    pub fn encode_string(self) -> String {
        unsafe { String::from_utf8_unchecked(self.encode()) }
    }
+
+    /// Generate the concise nettext representation of a term
+    pub fn encode_concise(self) -> Vec<u8> {
+        let mut buf = Vec::with_capacity(128);
+        self.0.encode_concise_aux(&mut buf);
+        buf
+    }
 }

 impl<'a> T<'a> {
@ -271,16 +325,16 @@ impl<'a> T<'a> {
            T::OwnedStr(s) => buf.extend_from_slice(&s),
            T::Dict(mut d) => {
                if d.is_empty() {
-                    buf.extend_from_slice(b"{}");
+                    buf.extend_from_slice(&[DICT_OPEN, DICT_CLOSE]);
                } else if d.len() == 1 {
                    let (k, v) = d.into_iter().next().unwrap();
-					buf.extend_from_slice(b"{ ");
-					buf.extend_from_slice(k.borrow());
-					buf.extend_from_slice(b" = ");
+                    buf.extend_from_slice(&[DICT_OPEN, b' ']);
+                    buf.extend_from_slice(k.borrow());
+                    buf.extend_from_slice(&[b' ', DICT_ASSIGN, b' ']);
                    v.encode_aux(buf, indent + 2, false);
-                    buf.extend_from_slice(b" }");
+                    buf.extend_from_slice(&[b' ', DICT_CLOSE]);
                } else {
-                    buf.extend_from_slice(b"{\n");
+                    buf.extend_from_slice(&[DICT_OPEN, b'\n']);
                    let indent2 = indent + 2;
                    let mut keys = d.keys().cloned().collect::<Vec<_>>();
                    keys.sort();
@ -290,39 +344,42 @@ impl<'a> T<'a> {
                            buf.push(b' ');
                        }
                        buf.extend_from_slice(k.borrow());
-                        buf.extend_from_slice(b" = ");
+                        buf.extend_from_slice(&[b' ', DICT_ASSIGN, b' ']);
                        v.encode_aux(buf, indent2, false);
-                        buf.extend_from_slice(b",\n");
+                        buf.extend_from_slice(&[DICT_DELIM, b'\n']);
                    }
                    for _ in 0..indent {
                        buf.push(b' ');
                    }
-                    buf.push(b'}');
+                    buf.push(DICT_CLOSE);
+                }
+            }
+            T::List(l) => {
+                if l.len() == 0 {
+                    buf.extend_from_slice(&[LIST_OPEN, LIST_CLOSE]);
+                } else if l.len() == 1 {
+                    buf.extend_from_slice(&[LIST_OPEN, b' ']);
+                    l.into_iter()
+                        .next()
+                        .unwrap()
+                        .encode_aux(buf, indent + 2, false);
+                    buf.extend_from_slice(&[b' ', LIST_CLOSE]);
+                } else {
+                    let indent2 = indent + 2;
+                    buf.extend_from_slice(&[LIST_OPEN, b'\n']);
+                    for item in l {
+                        for _ in 0..indent2 {
+                            buf.push(b' ');
+                        }
+                        item.encode_aux(buf, indent2, false);
+                        buf.extend_from_slice(&[LIST_DELIM, b'\n']);
+                    }
+                    for _ in 0..indent {
+                        buf.push(b' ');
+                    }
+                    buf.push(LIST_CLOSE);
                }
            }
-			T::List(l) => {
-				if l.len() == 0 {
-					buf.extend_from_slice(b"[]");
-				} else if l.len() == 1 {
-					buf.extend_from_slice(b"[ ");
-					l.into_iter().next().unwrap().encode_aux(buf, indent + 2, false);
-					buf.extend_from_slice(b" ]");
-				} else {
-					let indent2 = indent + 2;
-					buf.extend_from_slice(b"[\n");
-					for item in l {
-						for _ in 0..indent2 {
-							buf.push(b' ');
-						}
-						item.encode_aux(buf, indent2, false);
-						buf.extend_from_slice(b",\n");
-					}
-					for _ in 0..indent {
-						buf.push(b' ');
-					}
-					buf.push(b']');
-				}
-			}
            T::Seq(l) => {
                let indent2 = indent + 2;
                for (i, v) in l.into_iter().enumerate() {
@ -339,41 +396,94 @@ impl<'a> T<'a> {
            }
        }
    }
+
+    fn encode_concise_aux(self, buf: &mut Vec<u8>) {
+        match self {
+            T::Str(s) => buf.extend_from_slice(s),
+            T::OwnedStr(s) => buf.extend_from_slice(&s),
+            T::Dict(mut d) => {
+                buf.push(DICT_OPEN);
+                let mut keys = d.keys().cloned().collect::<Vec<_>>();
+                keys.sort();
+                for (i, k) in keys.into_iter().enumerate() {
+                    if i > 0 {
+                        buf.push(DICT_DELIM);
+                    }
+                    let v = d.remove(&k).unwrap();
+                    buf.extend_from_slice(k.borrow());
+                    buf.push(DICT_ASSIGN);
+                    v.encode_concise_aux(buf);
+                }
+                buf.push(DICT_CLOSE);
+            }
+            T::List(l) => {
+                buf.push(LIST_OPEN);
+                for (i, item) in l.into_iter().enumerate() {
+                    if i > 0 {
+                        buf.push(LIST_DELIM);
+                    }
+                    item.encode_concise_aux(buf);
+                }
+                buf.push(LIST_CLOSE);
+            }
+            T::Seq(l) => {
+                for (i, v) in l.into_iter().enumerate() {
+                    if i > 0 {
+                        buf.push(b' ');
+                    }
+                    v.encode_concise_aux(buf);
+                }
+            }
+        }
+    }
 }

 #[cfg(test)]
 mod tests {
-	use crate::debug;
    use super::*;
+    use crate::debug;

    #[test]
    fn complex1() {
        let input = seq([
            string("HELLO").unwrap(),
            string("alexhelloworld").unwrap(),
-			list([
-				 string("dude").unwrap(),
-				 string("why").unwrap(),
-			]),
+            list([string("dude").unwrap(), string("why").unwrap()]),
            dict([
                ("from", string("jxx").unwrap()),
                ("subject", string("hello").unwrap()),
-                ("data", raw(b"{ f1 = plop, f2 = kuko }").unwrap()),
+                ("data", raw(b"{ f1 = plop; f2 = kuko }").unwrap()),
            ])
            .unwrap(),
        ])
        .unwrap();
+
        let expected = "HELLO alexhelloworld [
-    dude,
-    why,
+    dude;
+    why;
  ] {
-    data = { f1 = plop, f2 = kuko },
-    from = jxx,
-    subject = hello,
+    data = { f1 = plop; f2 = kuko };
+    from = jxx;
+    subject = hello;
  }";
-        let enc = input.encode();
-        eprintln!("{}", debug(&enc));
-        eprintln!("{}", expected);
-        assert_eq!(debug(&enc), expected);
+        assert_eq!(debug(&input.encode()), expected);
+    }
+
+    #[test]
+    fn complex1_concise() {
+        let input = seq([
+            string("HELLO").unwrap(),
+            string("alexhelloworld").unwrap(),
+            list([string("dude").unwrap(), string("why").unwrap()]),
+            dict([
+                ("from", string("jxx").unwrap()),
+                ("subject", string("hello").unwrap()),
+                ("data", raw(b"{ f1 = plop; f2 = kuko }").unwrap()),
+            ])
+            .unwrap(),
+        ])
+        .unwrap();
+        let expected_concise = "HELLO alexhelloworld [dude;why] {data={ f1 = plop; f2 = kuko };from=jxx;subject=hello}";
+        assert_eq!(debug(&input.encode_concise()), expected_concise);
    }
 }
--- a/src/lib.rs
+++ b/src/lib.rs
@ -6,7 +6,7 @@
 //! use nettext::crypto::*;
 //!
 //! let final_payload = {
-//!     let keypair = SigningKeyPair::gen_with_defaults();
+//!     let keypair = gen_signing_keypair();
 //!
 //!     // Encode a fist object that represents a payload that will be hashed and signed
 //!     let signed_payload = seq([
@ -15,15 +15,15 @@
 //!         dict([
 //!             ("a", string("hello").unwrap()),
 //!             ("b", string("world").unwrap()),
-//!             ("c", raw(b"{ a = 12, b = 42 }").unwrap()),
+//!             ("c", raw(b"{ a = 12; b = 42 }").unwrap()),
 //!             ("d", bytes_split(&((0..128u8).collect::<Vec<_>>()))),
 //!         ]).unwrap(),
-//!         keypair.public_key.term().unwrap(),
+//!         keypair.public_key().term().unwrap(),
 //!     ]).unwrap().encode();
 //!     eprintln!("{}", std::str::from_utf8(&signed_payload).unwrap());
 //!
 //!     let hash = compute_hash(&signed_payload, None);
-//!     let sign = compute_signature(&signed_payload[..], &keypair.secret_key);
+//!     let sign = compute_signature(&signed_payload[..], &keypair);
 //!
 //!     // Encode a second object that represents the signed and hashed payload
 //!     dict([
@ -52,33 +52,32 @@
 //! assert_eq!(arg1.string().unwrap(), "myfunction");
 //! ```
 //!
-//! The value of `text1` would be as follows:
+//! The value of `signed_payload` would be as follows:
 //!
 //! ```raw
-//!
 //! CALL myfunction {
-//!     a = hello,
-//!     b = world,
-//!     c = { a = 12, b = 42 },
+//!     a = hello;
+//!     b = world;
+//!     c = { a = 12; b = 42 };
 //!     d = AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8gISIjJCUmJygpKissLS4v
 //!       MDEyMzQ1Njc4OTo7PD0-P0BBQkNERUZHSElKS0xNTk9QUVJTVFVWV1hZWltcXV5f
-//!       YGFiY2RlZmdoaWprbG1ub3BxcnN0dXZ3eHl6e3x9fn8,
-//!   } M3_to5OQ5TvIVyoRXTSK4Jz-zvSqsuh3a68haud_8Vs
+//!       YGFiY2RlZmdoaWprbG1ub3BxcnN0dXZ3eHl6e3x9fn8;
+//!   } pk.ed25519:inYgWFyL_BzZTsXNKp71r2aVct_3Izi_bkerbzOiz94
 //! ```
 //!
-//! And the value of `text2` would be as follows:
+//! And the value of `final_payload` would be as follows:
 //! ```raw
 //! {
-//!   hash = Hxpas10VnFIq8WIWGmQk7YLbxT-OMIkg0-sKSBJnUuo,
+//!   hash = h.b2:B1AnRocS90DmqxynGyvvBNuh-brucNO7-5hrsGplJr0;
 //!   payload = CALL myfunction {
-//!     a = hello,
-//!     b = world,
-//!     c = { a = 12, b = 42 },
+//!     a = hello;
+//!     b = world;
+//!     c = { a = 12; b = 42 };
 //!     d = AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8gISIjJCUmJygpKissLS4v
 //!       MDEyMzQ1Njc4OTo7PD0-P0BBQkNERUZHSElKS0xNTk9QUVJTVFVWV1hZWltcXV5f
-//!       YGFiY2RlZmdoaWprbG1ub3BxcnN0dXZ3eHl6e3x9fn8,
-//!   } M3_to5OQ5TvIVyoRXTSK4Jz-zvSqsuh3a68haud_8Vs,
-//!   signature = DAgQDqxi6rDEkGVoUmfHexWUCFYKNbQR0Fgp3_EiaMxiFLeQdy3w3If_lsYqDDmWHYR51whfaNGQZ6PxVthMAA,
+//!       YGFiY2RlZmdoaWprbG1ub3BxcnN0dXZ3eHl6e3x9fn8;
+//!   } pk.ed25519:inYgWFyL_BzZTsXNKp71r2aVct_3Izi_bkerbzOiz94;
+//!   signature = sig.ed25519:LvLC1gHxNxUH44HHQRO-zWtLM4WyXhiYLFr94qTdI311Wa-kmgZsaWqSWe3jcjkS4PnsWSNt5apgbhR68cWWCg;
 //! }
 //! ```
 //!
@ -99,16 +98,19 @@ pub mod serde;
 pub(crate) const DICT_OPEN: u8 = b'{';
 pub(crate) const DICT_CLOSE: u8 = b'}';
 pub(crate) const DICT_ASSIGN: u8 = b'=';
-pub(crate) const DICT_DELIM: u8 = b',';
+pub(crate) const DICT_DELIM: u8 = b';';
 pub(crate) const LIST_OPEN: u8 = b'[';
 pub(crate) const LIST_CLOSE: u8 = b']';
-pub(crate) const LIST_DELIM: u8 = b',';
-pub(crate) const STR_EXTRA_CHARS: &[u8] = b"._-+*?@:";
+pub(crate) const LIST_DELIM: u8 = b';';
+const BASE_EXTRA_CHARS: &[u8] = b".,:?!@$^<>|&#'_-+*/%";
+const STR_EXTRA_CHARS: &[u8] = b"\\";

+#[inline]
 pub(crate) fn is_string_char(c: u8) -> bool {
-    c.is_ascii_alphanumeric() || STR_EXTRA_CHARS.contains(&c)
+    c.is_ascii_alphanumeric() || BASE_EXTRA_CHARS.contains(&c) || STR_EXTRA_CHARS.contains(&c)
 }

+#[inline]
 pub(crate) fn is_whitespace(c: u8) -> bool {
    c.is_ascii_whitespace()
 }
--- a/src/serde/de.rs
+++ b/src/serde/de.rs
@ -14,7 +14,7 @@ use crate::serde::error::{Error, Result};
 pub struct Deserializer<'de, 'a>(Term<'de, 'a>);

 impl<'de, 'a> Deserializer<'de, 'a> {
-    fn from_term(input: &'a Term<'de, 'a>) -> Deserializer<'de, 'a> {
+    pub fn from_term(input: &'a Term<'de, 'a>) -> Deserializer<'de, 'a> {
        Deserializer(Term(input.0.mkref()))
    }
 }
--- a/src/serde/mod.rs
+++ b/src/serde/mod.rs
@ -11,20 +11,26 @@ pub use ser::{to_bytes, to_term, Serializer};
 #[cfg(test)]
 mod tests {
    use super::*;
+    use crate::debug;
    use serde::{Deserialize, Serialize};
    use std::collections::HashMap;
-	use crate::debug;

    fn test_bidir<T: Serialize + for<'de> Deserialize<'de> + PartialEq + std::fmt::Debug>(
        input: T,
-        expected: &str,
+        expected_concise: &str,
    ) {
-        eprintln!("Expecting: {}", expected);
+        eprintln!("Expecting: {}", expected_concise);
+
        let ser = to_bytes(&input).unwrap();
        let ser = debug(&ser);
        eprintln!("Serialized: {}", ser);
-        assert_eq!(ser, expected);
        assert_eq!(from_bytes::<T>(ser.as_bytes()).unwrap(), input);
+
+        let ser_concise = to_term(&input).unwrap().encode_concise();
+        let ser_concise = debug(&ser_concise);
+        eprintln!("Serialized (concise): {}", ser_concise);
+        assert_eq!(ser_concise, expected_concise);
+        assert_eq!(from_bytes::<T>(ser_concise.as_bytes()).unwrap(), input);
    }

    #[test]
@ -39,13 +45,7 @@ mod tests {
            int: 1,
            seq: vec!["a".to_string(), "b".to_string()],
        };
-        let expected = r#"Test {
-    int = 1,
-    seq = [
-      YQ,
-      Yg,
-    ],
-  }"#;
+        let expected = r#"Test {int=1;seq=[YQ;Yg]}"#;
        test_bidir(input, expected);

        let input = vec![
@ -58,22 +58,7 @@ mod tests {
                seq: vec!["c".to_string(), "d".to_string()],
            },
        ];
-        let expected = r#"[
-  Test {
-      int = 1,
-      seq = [
-        YQ,
-        Yg,
-      ],
-    },
-  Test {
-      int = 2,
-      seq = [
-        Yw,
-        ZA,
-      ],
-    },
-]"#;
+        let expected = r#"[Test {int=1;seq=[YQ;Yg]};Test {int=2;seq=[Yw;ZA]}]"#;
        test_bidir(input, expected);
    }

@ -100,7 +85,7 @@ mod tests {
        test_bidir(input, expected);

        let input = E::Struct { a: 1 };
-        let expected = r#"E.Struct { a = 1 }"#;
+        let expected = r#"E.Struct {a=1}"#;
        test_bidir(input, expected);

        let input = vec![
@ -111,15 +96,7 @@ mod tests {
            E::Struct { a: 1 },
            E::Tuple(3, 2),
        ];
-        let expected =
-            r#"[
-  E.Unit,
-  E.Unit,
-  E.Newtype 1,
-  E.Tuple 1 2,
-  E.Struct { a = 1 },
-  E.Tuple 3 2,
-]"#;
+        let expected = r#"[E.Unit;E.Unit;E.Newtype 1;E.Tuple 1 2;E.Struct {a=1};E.Tuple 3 2]"#;
        test_bidir(input, expected);
    }

@ -133,24 +110,14 @@ mod tests {
    #[test]
    fn test_list() {
        let input = vec![1, 2, 3, 4];
-        let expected = r#"[
-  1,
-  2,
-  3,
-  4,
-]"#;
+        let expected = r#"[1;2;3;4]"#;
        test_bidir(input, expected);
    }

    #[test]
    fn test_seqlist() {
        let input = vec![(1, 2), (2, 3), (3, 4), (5, 6)];
-        let expected = r#"[
-  1 2,
-  2 3,
-  3 4,
-  5 6,
-]"#;
+        let expected = r#"[1 2;2 3;3 4;5 6]"#;
        test_bidir(input, expected);
    }

@ -159,26 +126,13 @@ mod tests {
        let mut input = HashMap::new();
        input.insert("hello".to_string(), "world".to_string());
        input.insert("dont".to_string(), "panic".to_string());
-        let expected = r#"{
-  ZG9udA = cGFuaWM,
-  aGVsbG8 = d29ybGQ,
-}"#;
+        let expected = r#"{ZG9udA=cGFuaWM;aGVsbG8=d29ybGQ}"#;
        test_bidir(input, expected);

        let mut input = HashMap::new();
        input.insert(12, vec![42, 125]);
        input.insert(33, vec![19, 22, 21]);
-        let expected = r#"{
-  12 = [
-    42,
-    125,
-  ],
-  33 = [
-    19,
-    22,
-    21,
-  ],
-}"#;
+        let expected = r#"{12=[42;125];33=[19;22;21]}"#;
        test_bidir(input, expected);
    }
 }
--- a/src/serde/ser.rs
+++ b/src/serde/ser.rs
@ -5,6 +5,7 @@ use crate::serde::error::{Error, Result};
 use serde::ser::Error as SerError;

 /// Serde serializer for nettext
+#[derive(Clone, Copy, Default)]
 pub struct Serializer;

 /// Serialize value to nettext encoder term
@ -12,7 +13,7 @@ pub fn to_term<T>(value: &T) -> Result<Term<'static>>
 where
    T: Serialize,
 {
-    value.serialize(&mut Serializer)
+    value.serialize(&mut Serializer::default())
 }

 /// Serialize value to nettext
@ -20,7 +21,7 @@ pub fn to_bytes<T>(value: &T) -> Result<Vec<u8>>
 where
    T: Serialize,
 {
-    Ok(value.serialize(&mut Serializer)?.encode())
+    Ok(value.serialize(&mut Serializer::default())?.encode())
 }

 impl<'a> ser::Serializer for &'a mut Serializer {
@ -148,12 +149,16 @@ impl<'a> ser::Serializer for &'a mut Serializer {
    }

    fn serialize_seq(self, _len: Option<usize>) -> Result<Self::SerializeSeq> {
-        Ok(ListSerializer { items: vec![] })
+        Ok(ListSerializer {
+            items: vec![],
+            ser: *self,
+        })
    }

    fn serialize_tuple(self, len: usize) -> Result<Self::SerializeTuple> {
        Ok(SeqSerializer {
            items: Vec::with_capacity(len),
+            ser: *self,
        })
    }

@ -164,7 +169,7 @@ impl<'a> ser::Serializer for &'a mut Serializer {
    ) -> Result<Self::SerializeTupleStruct> {
        let mut items = Vec::with_capacity(len + 1);
        items.push(string(name)?);
-        Ok(SeqSerializer { items })
+        Ok(SeqSerializer { items, ser: *self })
    }

    fn serialize_tuple_variant(
@ -176,13 +181,14 @@ impl<'a> ser::Serializer for &'a mut Serializer {
    ) -> Result<Self::SerializeTupleVariant> {
        let mut items = Vec::with_capacity(len + 1);
        items.push(string_owned(format!("{}.{}", name, variant))?);
-        Ok(SeqSerializer { items })
+        Ok(SeqSerializer { items, ser: *self })
    }

    fn serialize_map(self, _len: Option<usize>) -> Result<Self::SerializeMap> {
        Ok(MapSerializer {
            next: None,
            fields: vec![],
+            ser: *self,
        })
    }

@ -190,6 +196,7 @@ impl<'a> ser::Serializer for &'a mut Serializer {
        Ok(StructSerializer {
            name,
            fields: Vec::with_capacity(len),
+            ser: *self,
        })
    }

@ -204,6 +211,7 @@ impl<'a> ser::Serializer for &'a mut Serializer {
            name,
            variant,
            fields: Vec::with_capacity(len),
+            ser: *self,
        })
    }
 }
@ -212,6 +220,7 @@ impl<'a> ser::Serializer for &'a mut Serializer {

 pub struct SeqSerializer {
    items: Vec<Term<'static>>,
+    ser: Serializer,
 }

 impl ser::SerializeTuple for SeqSerializer {
@ -222,7 +231,7 @@ impl ser::SerializeTuple for SeqSerializer {
    where
        T: ?Sized + Serialize,
    {
-        self.items.push(value.serialize(&mut Serializer)?);
+        self.items.push(value.serialize(&mut self.ser)?);
        Ok(())
    }

@ -239,7 +248,7 @@ impl ser::SerializeTupleStruct for SeqSerializer {
    where
        T: ?Sized + Serialize,
    {
-        self.items.push(value.serialize(&mut Serializer)?);
+        self.items.push(value.serialize(&mut self.ser)?);
        Ok(())
    }

@ -256,7 +265,7 @@ impl ser::SerializeTupleVariant for SeqSerializer {
    where
        T: ?Sized + Serialize,
    {
-        self.items.push(value.serialize(&mut Serializer)?);
+        self.items.push(value.serialize(&mut self.ser)?);
        Ok(())
    }

@ -267,6 +276,7 @@ impl ser::SerializeTupleVariant for SeqSerializer {

 pub struct ListSerializer {
    items: Vec<Term<'static>>,
+    ser: Serializer,
 }
 impl ser::SerializeSeq for ListSerializer {
    type Ok = Term<'static>;
@ -276,7 +286,7 @@ impl ser::SerializeSeq for ListSerializer {
    where
        T: ?Sized + Serialize,
    {
-        self.items.push(value.serialize(&mut Serializer)?);
+        self.items.push(value.serialize(&mut self.ser)?);
        Ok(())
    }

@ -288,6 +298,7 @@ impl ser::SerializeSeq for ListSerializer {
 pub struct MapSerializer {
    next: Option<Vec<u8>>,
    fields: Vec<(Vec<u8>, Term<'static>)>,
+    ser: Serializer,
 }

 impl ser::SerializeMap for MapSerializer {
@ -298,7 +309,8 @@ impl ser::SerializeMap for MapSerializer {
    where
        T: ?Sized + Serialize,
    {
-        self.next = Some(key.serialize(&mut Serializer)?.encode());
+        let mut ser = Serializer;
+        self.next = Some(key.serialize(&mut ser)?.encode());
        Ok(())
    }

@ -310,7 +322,7 @@ impl ser::SerializeMap for MapSerializer {
            self.next
                .take()
                .ok_or_else(|| Self::Error::custom("no key"))?,
-            value.serialize(&mut Serializer)?,
+            value.serialize(&mut self.ser)?,
        ));
        Ok(())
    }
@ -323,6 +335,7 @@ impl ser::SerializeMap for MapSerializer {
 pub struct StructSerializer {
    name: &'static str,
    fields: Vec<(&'static str, Term<'static>)>,
+    ser: Serializer,
 }

 impl ser::SerializeStruct for StructSerializer {
@ -333,7 +346,7 @@ impl ser::SerializeStruct for StructSerializer {
    where
        T: ?Sized + Serialize,
    {
-        self.fields.push((key, value.serialize(&mut Serializer)?));
+        self.fields.push((key, value.serialize(&mut self.ser)?));
        Ok(())
    }

@ -346,6 +359,7 @@ pub struct StructVariantSerializer {
    name: &'static str,
    variant: &'static str,
    fields: Vec<(&'static str, Term<'static>)>,
+    ser: Serializer,
 }

 impl ser::SerializeStructVariant for StructVariantSerializer {
@ -356,7 +370,7 @@ impl ser::SerializeStructVariant for StructVariantSerializer {
    where
        T: ?Sized + Serialize,
    {
-        self.fields.push((key, value.serialize(&mut Serializer)?));
+        self.fields.push((key, value.serialize(&mut self.ser)?));
        Ok(())
    }
Author	SHA1	Message	Date
Alex	31c20c3a03	reduce unnecessary re-exports	2023-11-15 01:46:48 +01:00
Alex	147f882ad5	Update dryoc to 0.5	2023-11-15 01:44:29 +01:00
Alex	024a715d0d	simplify byte encodings, use prefixes for crypto data types	2023-11-15 01:35:21 +01:00
Alex	5b5bb430b9	add cargo.lock	2023-11-15 00:18:46 +01:00
Alex	ea4233259f	remove switch64	2023-11-15 00:16:02 +01:00
Alex	3b8b1ec0f4	remove " from allowed chars	2023-11-15 00:13:43 +01:00
Alex	bd11c73899	v0.4.0 : change delimiter, etc	2023-05-10 12:05:25 +02:00
Alex	7dc139737c	fix substraction overflow	2022-12-15 17:03:12 +01:00
Alex	eae4a0443a	Switch64 encoding available in serde encoder (TODO decoder)	2022-12-15 16:47:04 +01:00
Alex	1579030b44	Cargo fmt	2022-12-15 15:38:10 +01:00
Alex	52f6bd177c	New concise encoding	2022-12-15 15:36:41 +01:00