windjammer-runtime 0.47.0

//! Cryptographic functions
//!
//! Windjammer's `std::crypto` module maps to these functions.

use sha2::{Digest, Sha256};

/// SHA-256 hash
pub fn sha256(data: &[u8]) -> String {
    let mut hasher = Sha256::new();
    hasher.update(data);
    format!("{:x}", hasher.finalize())
}

/// SHA-256 hash of string
pub fn sha256_string(s: &str) -> String {
    sha256(s.as_bytes())
}

/// Hash password with bcrypt
pub fn hash_password(password: &str) -> Result<String, String> {
    bcrypt::hash(password, bcrypt::DEFAULT_COST).map_err(|e| e.to_string())
}

/// Verify password against bcrypt hash
pub fn verify_password(password: &str, hash: &str) -> Result<bool, String> {
    bcrypt::verify(password, hash).map_err(|e| e.to_string())
}

/// Base64 encode
pub fn base64_encode(data: &[u8]) -> String {
    use base64::{engine::general_purpose, Engine as _};
    general_purpose::STANDARD.encode(data)
}

/// Base64 decode
pub fn base64_decode(s: &str) -> Result<Vec<u8>, String> {
    use base64::{engine::general_purpose, Engine as _};
    general_purpose::STANDARD
        .decode(s)
        .map_err(|e| e.to_string())
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_sha256() {
        let hash = sha256_string("hello");
        assert_eq!(hash.len(), 64); // SHA-256 produces 64 hex characters
        assert_eq!(
            hash,
            "2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824"
        );
    }

    #[test]
    fn test_password_hashing() {
        let password = "secret123";
        let hash = hash_password(password).unwrap();

        assert!(verify_password(password, &hash).unwrap());
        assert!(!verify_password("wrong", &hash).unwrap());
    }

    #[test]
    fn test_base64() {
        let data = b"hello world";
        let encoded = base64_encode(data);
        let decoded = base64_decode(&encoded).unwrap();
        assert_eq!(decoded, data);
    }
}