amberjs 1.16.1

// 去中心化认证系统


use std::collections::HashMap;
use std::collections::{BTreeMap};
use std::time::SystemTime;
/// 认证配置
#[derive(Debug, Clone)]
pub struct AuthConfig {
    /// 启用 DID (去中心化标识符)
    pub enable_did: bool,
    /// 启用零知识证明
    pub enable_zero_knowledge: bool,
    /// 支持的区块链
    pub supported_chains: Vec<String>,
}
impl Default for AuthConfig {
    fn default() -> Self {
        Self {
            enable_did: true,
            enable_zero_knowledge: false,
            supported_chains: vec!["ethereum".to_string()],
        }
    }
}
/// 身份
#[derive(Debug, Clone)]
pub struct Identity {
    /// 去中心化标识符
    pub did: String,
    /// 公钥
    pub public_key: Vec<u8>,
    /// 创建时间
    pub created_at: u64,
    /// 元数据
    pub metadata: HashMap<String, String>,
}
/// 凭证
#[derive(Debug, Clone)]
pub struct Credential {
    /// 持有者 DID
    pub holder_did: String,
    /// 颁发者 DID
    pub issuer_did: String,
    /// 声明
    pub claims: HashMap<String, serde_json::Value>,
    /// 证明
    pub proof: Vec<u8>,
}
/// 去中心化认证系统
pub struct DecentralizedAuth {
    /// 配置
    config: AuthConfig,
    /// 身份缓存
    identities: HashMap<String, Identity>,
    /// 凭证缓存
    credentials: Vec<Credential>,
}
impl DecentralizedAuth {
    /// 创建去中心化认证系统
    pub fn new(config: AuthConfig) -> Result<Self, AuthError> {
        Ok(Self {
            config,
            identities: HashMap::new(),
            credentials: Vec::new(),
        })
    }
    /// 创建身份
    pub fn create_identity(&mut self, user_id: &str) -> Result<Identity, AuthError> {
        let did: _ = format!("did:amberjs:{}", user_id);
        let identity: _ = Identity {
            did: did.clone(),
            public_key: vec![0u8; 32], // 简化实现
            created_at: std::time::SystemTime::now()
                .duration_since(std::time::UNIX_EPOCH)
                .unwrap()
                .as_secs(),
            metadata: HashMap::new(),
        };
        self.identities.insert(did, identity.clone());
        Ok(identity)
    }
    /// 获取身份
    pub fn get_identity(&self, did: &str) -> Option<&Identity> {
        self.identities.get(did)
    }
    /// 验证凭证
    pub fn verify_credential(&self, credential: &Credential) -> Result<bool, AuthError> {
        // 简化实现：检查基本结构
        if credential.holder_did.is_empty() || credential.issuer_did.is_empty() {
            return Ok(false);
        }
        if self.config.enable_zero_knowledge {
            // 零知识证明验证
            if credential.proof.is_empty() {
                return Ok(false);
            }
        }
        Ok(true)
    }
    /// 颁发凭证
    pub fn issue_credential(
        &mut self,
        holder_did: &str,
        issuer_did: &str,
        claims: HashMap<String, serde_json::Value>,
    ) -> Result<Credential, AuthError> {
        let credential: _ = Credential {
            holder_did: holder_did.to_string(),
            issuer_did: issuer_did.to_string(),
            claims,
            proof: vec![1, 2, 3, 4], // 简化证明
        };
        self.credentials.push(credential.clone());
        Ok(credential)
    }
    /// DID 是否启用
    pub fn did_enabled(&self) -> bool {
        self.config.enable_did
    }
    /// 零知识证明是否启用
    pub fn zero_knowledge_enabled(&self) -> bool {
        self.config.enable_zero_knowledge
    }
}
/// 认证错误
#[derive(Debug, Clone)]
pub enum AuthError {
    /// 初始化失败
    InitializationFailed(String),
    /// 身份创建失败
    IdentityCreationFailed(String),
    /// 验证失败
    VerificationFailed(String),
    /// 无效凭证
    InvalidCredential(String),
}
impl std::fmt::Display for AuthError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            Self::InitializationFailed(msg) => write!(f, "初始化失败: {}", msg),
            Self::IdentityCreationFailed(msg) => write!(f, "身份创建失败: {}", msg),
            Self::VerificationFailed(msg) => write!(f, "验证失败: {}", msg),
            Self::InvalidCredential(msg) => write!(f, "无效凭证: {}", msg),
        }
    }
}
impl std::error::Error for AuthError {}