resolved share

Author: ehsan6sha

Cargo.lock

@@ -74,7 +74,7 @@ name = "encrypted_upload_test"
 path = "examples/encrypted_upload_test.rs"
 
 [workspace.package]
-version = "0.2.10"
+version = "0.2.11"
 edition = "2021"
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/functionland/fula-api"

Cargo.toml

@@ -57,6 +57,10 @@ thiserror = { workspace = true }
 anyhow = { workspace = true }
 zeroize = { version = "1.8", features = ["derive"] }
 
+# WASM-specific dependencies
+[target.'cfg(target_arch = "wasm32")'.dependencies]
+js-sys = "0.3"
+
 [dev-dependencies]
 criterion = { workspace = true }
 proptest = { workspace = true }

crates/fula-crypto/Cargo.toml

@@ -43,17 +43,14 @@ use crate::{
     hpke::{EncryptedData, Encryptor, Decryptor, SharePermissions},
     keys::{DekKey, KekKeyPair, PublicKey, SecretKey},
     sharing::{ShareToken, ShareMode, SnapshotBinding},
+    time::now_timestamp,
 };
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
-use std::time::{SystemTime, UNIX_EPOCH};
 
-/// Get current Unix timestamp in seconds
+/// Get current Unix timestamp in seconds (WASM-compatible)
 fn current_timestamp() -> i64 {
-    SystemTime::now()
-        .duration_since(UNIX_EPOCH)
-        .unwrap_or_default()
-        .as_secs() as i64
+    now_timestamp()
 }
 
 /// Generate a unique inbox entry ID

crates/fula-crypto/src/inbox.rs

@@ -83,6 +83,7 @@ pub mod sharing;
 pub mod streaming;
 pub mod subtree_keys;
 pub mod symmetric;
+pub mod time;
 
 pub use chunked::{ChunkedEncoder, ChunkedDecoder, ChunkedFileMetadata, EncryptedChunk, should_use_chunked, CHUNKED_THRESHOLD, VerifiedStreamingDecoder};
 #[cfg(feature = "tokio-runtime")]

crates/fula-crypto/src/lib.rs

@@ -15,6 +15,7 @@ use crate::{
     CryptoError, Result,
     keys::DekKey,
     symmetric::{Aead, Nonce},
+    time::now_timestamp,
 };
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
@@ -45,11 +46,8 @@ pub struct PrivateMetadata {
 impl PrivateMetadata {
     /// Create new private metadata
     pub fn new(original_key: impl Into<String>, actual_size: u64) -> Self {
-        let now = std::time::SystemTime::now()
-            .duration_since(std::time::UNIX_EPOCH)
-            .unwrap_or_default()
-            .as_secs() as i64;
-        
+        let now = now_timestamp();
+
         Self {
             original_key: original_key.into(),
             actual_size,

crates/fula-crypto/src/private_metadata.rs

@@ -11,10 +11,10 @@ use crate::{
     CryptoError, Result,
     hpke::{Encryptor, Decryptor, EncryptedData, SharePermissions},
     keys::{DekKey, KekKeyPair, PublicKey, SecretKey},
+    time::now_timestamp,
 };
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
-use std::time::{SystemTime, UNIX_EPOCH};
 
 // ═══════════════════════════════════════════════════════════════════════════
 // SHARE MODE (WNFS-Inspired Snapshot vs Temporal Semantics)
@@ -130,12 +130,11 @@ pub enum SnapshotVerification {
     TimestampChanged,
 }
 
-/// Get current Unix timestamp in seconds
+/// Get current Unix timestamp in seconds (WASM-compatible)
+///
+/// This function works in both native and WASM environments.
 pub fn current_timestamp() -> i64 {
-    SystemTime::now()
-        .duration_since(UNIX_EPOCH)
-        .unwrap_or_default()
-        .as_secs() as i64
+    now_timestamp()
 }
 
 /// A share token that grants access to encrypted content

crates/fula-crypto/src/sharing.rs

@@ -34,17 +34,14 @@ use crate::{
     keys::DekKey,
     hpke::{EncryptedData, Encryptor, Decryptor, SharePermissions},
     keys::{KekKeyPair, PublicKey, SecretKey},
+    time::now_timestamp,
 };
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
-use std::time::{SystemTime, UNIX_EPOCH};
 
-/// Get current Unix timestamp in seconds
+/// Get current Unix timestamp in seconds (WASM-compatible)
 fn current_timestamp() -> i64 {
-    SystemTime::now()
-        .duration_since(UNIX_EPOCH)
-        .unwrap_or_default()
-        .as_secs() as i64
+    now_timestamp()
 }
 
 // ═══════════════════════════════════════════════════════════════════════════

crates/fula-crypto/src/subtree_keys.rs

@@ -0,0 +1,36 @@
+//! WASM-compatible time utilities
+//!
+//! This module provides time functions that work in both native and WASM environments.
+//! In WASM, `std::time::SystemTime` is not available, so we use `js_sys::Date::now()` instead.
+
+/// Get current Unix timestamp in seconds (WASM-compatible)
+///
+/// Returns the current time as seconds since the Unix epoch.
+/// Works in both native Rust and WASM environments.
+#[cfg(target_arch = "wasm32")]
+pub fn now_timestamp() -> i64 {
+    (js_sys::Date::now() / 1000.0) as i64
+}
+
+/// Get current Unix timestamp in seconds (native)
+#[cfg(not(target_arch = "wasm32"))]
+pub fn now_timestamp() -> i64 {
+    std::time::SystemTime::now()
+        .duration_since(std::time::UNIX_EPOCH)
+        .unwrap_or_default()
+        .as_secs() as i64
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_now_timestamp_reasonable() {
+        let ts = now_timestamp();
+        // Should be after Jan 1, 2020 (timestamp: 1577836800)
+        assert!(ts > 1577836800, "Timestamp should be after 2020");
+        // Should be before Jan 1, 2100 (timestamp: 4102444800)
+        assert!(ts < 4102444800, "Timestamp should be before 2100");
+    }
+}

crates/fula-crypto/src/time.rs

@@ -5,6 +5,17 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.2.11] - 2026-01-13
+
+### Fixed
+
+- **WASM time compatibility bug**: Fixed `time not implemented on this platform` panic when validating share tokens in browser
+- Added centralized `time::now_timestamp()` function using `js_sys::Date::now()` for WASM and `std::time::SystemTime` for native
+
+### Changed
+
+- Updated `fula-crypto` to use WASM-compatible time functions in sharing, inbox, private_metadata, and subtree_keys modules
+
 ## [0.2.10] - 2026-01-12
 
 ### Added