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refact: wasm compatibility #5

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refact: wasm compatibility #5

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3218c2e
refact: made WASM compatible
schronck Feb 3, 2026
a5716a0
refact: tokio tungstenite wasm
schronck Feb 3, 2026
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151 changes: 67 additions & 84 deletions Cargo.lock
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18 changes: 9 additions & 9 deletions Cargo.toml
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Original file line number Diff line number Diff line change
@@ -1,13 +1,13 @@
[workspace]
members = [
"crates/common",
"crates/cryptography",
"crates/examples",
"crates/keycloak",
"crates/ledger",
"crates/ledgrpc",
"crates/registry",
"crates/wallet",
"crates/common",
"crates/cryptography",
"crates/examples",
"crates/keycloak",
"crates/ledger",
"crates/ledgrpc",
"crates/registry",
"crates/wallet",
]
resolver = "2"

Expand All @@ -16,7 +16,7 @@ edition = "2024"
license = "MIT"
version = "0.2.0"

[workspace.profile.release]
[profile.release]
opt-level = 3
strip = "debuginfo"
codegen-units = 1
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6 changes: 6 additions & 0 deletions crates/cryptography/Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -8,3 +8,9 @@ version.workspace = true
base64 = { workspace = true }

aes-gcm = "0.10"

[target.'cfg(not(target_arch = "wasm32"))'.dependencies]
getrandom = { version = "0.2" }

[target.'cfg(target_arch = "wasm32")'.dependencies]
getrandom = { version = "0.2", features = ["js"] }
18 changes: 13 additions & 5 deletions crates/cryptography/src/symmetric/aes_256_gcm.rs
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Original file line number Diff line number Diff line change
@@ -1,9 +1,16 @@
use aes_gcm::aead::{Aead, KeyInit, OsRng};
use aes_gcm::{AeadCore, Aes256Gcm, Nonce};
use aes_gcm::aead::{Aead, KeyInit};
use aes_gcm::{Aes256Gcm, Nonce};
use base64::{Engine as _, engine::general_purpose};

pub const PREFIX: &str = "aes-256-gcm";

/// Generate a random 12-byte nonce using getrandom (WASM-compatible)
fn generate_nonce() -> Result<[u8; 12], String> {
let mut nonce = [0u8; 12];
getrandom::getrandom(&mut nonce).map_err(|e| format!("RNG error: {}", e))?;
Ok(nonce)
}

/// Encrypt a UTF-8 string using AES-256-GCM.
/// Returns a base64-encoded string containing both the nonce and ciphertext.
#[allow(dead_code)]
Expand All @@ -14,14 +21,15 @@ pub fn encrypt_string(key: String, plaintext: String) -> Result<String, String>

let cipher =
Aes256Gcm::new_from_slice(&key_bytes).map_err(|e| format!("Cipher init: {}", e))?;
let nonce = Aes256Gcm::generate_nonce(&mut OsRng);
let nonce_bytes = generate_nonce()?;
let nonce = Nonce::from_slice(&nonce_bytes);

let ciphertext = cipher
.encrypt(&nonce, plaintext.as_bytes())
.encrypt(nonce, plaintext.as_bytes())
.map_err(|e| format!("Encrypt error: {}", e))?;

let mut combined = Vec::with_capacity(12 + ciphertext.len());
combined.extend_from_slice(&nonce);
combined.extend_from_slice(&nonce_bytes);
combined.extend_from_slice(&ciphertext);
Ok(general_purpose::STANDARD.encode(combined))
}
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