CATEGORY

Authentication 2,312 crates

Data as of 2026-07-25 (crates.io database dump, timestamp 2026-07-25T02:00:36Z). Source: crates.io · db-dump.tar.gz · methodology & corrections.

pbkdf2Generic implementation of PBKDF2209,336,341MIT OR Apache-2.0AuthenticationCryptography password-hashTraits which describe the functionality of password hashing algorithms, with optional support for a `no_std`/`no_alloc`-friendly…99,440,612MIT OR Apache-2.0AuthenticationCryptography scryptScrypt password-based key derivation function55,258,002MIT OR Apache-2.0AuthenticationCryptography nkeysRust implementation of the NATS nkeys library46,110,913Apache-2.0AuthenticationCryptography signatoryMulti-provider elliptic curve digital signature library with ECDSA and Ed25519 support45,786,101Apache-2.0 OR MITAuthenticationCryptography argon2Pure Rust implementation of the Argon2 password hashing function with support for the Argon2d, Argon2i, and Argon2id algorithmic…40,241,591MIT OR Apache-2.0AuthenticationCryptography hyper-http-proxyA proxy connector for Hyper-based applications29,593,969MITAsynchronousAuthentication docker_credentialReads a user's docker credentials from config29,578,221MIT OR Apache-2.0AuthenticationConfiguration http-authHTTP authentication: parse challenge lists, respond to Basic and Digest challenges. Likely to be extended with server support and…13,414,415MIT/Apache-2.0AuthenticationParser implementations reqsignSigning HTTP requests for AWS, Azure, Google, Huawei, Aliyun, Tencent and Oracle services13,307,352Apache-2.0AuthenticationWeb programming::HTTP client bcrypt-pbkdfbcrypt-pbkdf password-based key derivation function13,269,127MIT OR Apache-2.0AuthenticationCryptography gcp_authGoogle cloud platform (GCP) authentication using default and custom service accounts11,362,821MITAsynchronousAuthentication ssh-encodingPure Rust implementation of SSH data type decoders/encoders as described in RFC42519,096,048Apache-2.0 OR MITAuthenticationCryptography pasetorsPASETO: Platform-Agnostic Security Tokens (in Rust)8,503,189MITAuthenticationCryptography totp-rsRFC-compliant TOTP implementation with ease of use as a goal and additionnal QoL features.8,402,520MITAuthenticationWeb programming ssh-keyPure Rust implementation of SSH key file format decoders/encoders as described in RFC4251/RFC4253 and OpenSSH key formats, as…8,014,009Apache-2.0 OR MITAuthenticationCryptography hyper-proxyA proxy connector for Hyper-based applications7,646,224MITAsynchronousAuthentication biscuitA library to work with Javascript Object Signing and Encryption(JOSE), including JSON Web Tokens (JWT), JSON Web Signature (JWS)…5,920,238MITAuthenticationWeb programming webauthn-rs-protoWebauthn Specification Bindings5,876,831MPL-2.0AuthenticationWeb programming webauthn-rs-coreWebauthn Cryptographic Operation Handling5,822,156MPL-2.0AuthenticationWeb programming webauthn-rsWebauthn Framework for Rust Web Servers5,214,535MPL-2.0AuthenticationWeb programming passkey-typesRust type definitions for the webauthn and CTAP specifications4,258,560MIT OR Apache-2.0Authentication pwhashA collection of password hashing routines in pure Rust.4,251,087MITAuthenticationCryptography openidOpenID Connect & Discovery client library using async / await.4,106,057Unlicense OR MITAuthentication ldap3Pure-Rust LDAP Client3,845,947MIT/Apache-2.0AuthenticationNetwork programming http-auth-basicHTTP Basic Authentication Scheme (RFC 7617 and RFC 2617 compliant, base64-encoded credentials) for Rust applications3,624,497MIT OR Apache-2.0AuthenticationEncoding compact_jwtMinimal implementation of JWT for OIDC and other applications3,582,984MPL-2.0AuthenticationWeb programming josekitJOSE (Javascript Object Signing and Encryption) library for Rust.3,468,654MIT OR Apache-2.0Authentication passkey-authenticatorA webauthn authenticator supporting passkeys.3,385,416MIT OR Apache-2.0Authentication tonic-middlewareAsync middleware and interceptor for Tonic services3,385,001MITAsynchronousAuthentication passkey-clientWebauthn client in Rust.3,379,675MIT OR Apache-2.0Authentication async-socks5An async/.await SOCKS5 implementation2,930,429Apache-2.0 OR MITAsynchronousAuthentication coins-ledgerLedger Nano X/S connection and communication management library2,761,083MIT OR Apache-2.0AuthenticationCryptography ssh-agent-libA collection of types for writing custom SSH agents2,611,984MIT OR Apache-2.0AuthenticationCryptography oxide-authA OAuth2 library for common web servers, featuring a set of configurable and pluggable backends.2,481,136MIT OR Apache-2.0AuthenticationWeb programming::HTTP server passkeyA one stop library to implement a passkey client and authenticator2,314,894MIT OR Apache-2.0Authentication passkey-transportsA crate managing CTAP2 transport-specific bindings.2,311,453MIT OR Apache-2.0Authentication aliriImplementations of the Javascript/JSON Object Signing and Encryption (JOSE) standards2,167,743MIT OR Apache-2.0Authentication internal-russh-forked-ssh-keyPure Rust implementation of SSH key file format decoders/encoders as described in RFC4251/RFC4253 and OpenSSH key formats, as…2,114,712Apache-2.0 OR MITAuthenticationCryptography digest_authImplementation of the Digest Auth algorithm as defined in IETF RFC 2069, 2617, and 7616, intended for HTTP clients2,086,150MITAuthenticationCryptography fast-socks5Fast SOCKS5 client/server implementation written in Rust async/.await (tokio)1,987,944MITAsynchronousAuthentication aliri_tokensBackground token management and renewal based on best practices1,877,325MIT OR Apache-2.0Authentication aliri_reqwestBackground token management and renewal for reqwest based on best practices1,845,215MIT OR Apache-2.0Authentication sequoia-openpgpOpenPGP data types and associated machinery1,677,318LGPL-2.0-or-laterAuthenticationCryptography auth-git2Authentication for `git2`1,670,742BSD-2-ClauseAuthentication hyper-socks2A SOCKS5 connector for hyper library1,624,367Apache-2.0 OR MITAuthenticationNetwork programming oxide-auth-asyncCombines oxide-auth with async and futures1,439,572MIT OR Apache-2.0AuthenticationWeb programming::HTTP server totp-liteA simple, correct TOTP library.1,438,281MITAuthentication midCreating a Machine ID hash for MacOS/Windows/Linux/iOS1,428,925MIT OR Apache-2.0AccessibilityAuthentication ledger-apduLedger Hardware Wallet - Common APDU Protocol Types1,424,367Apache-2.0AuthenticationCryptography yubicoYubikey client API library1,391,329MIT OR Apache-2.0Authentication ledger-transportLedger Hardware Wallet - Generic Transport1,347,744Apache-2.0AuthenticationCryptography phcPure Rust implementation of the Password Hashing Competition (PHC) string format which is used for storing password hashes1,249,769Apache-2.0 OR MITAuthenticationCryptography ledger-transport-hidLedger Hardware Wallet - HID Transport1,214,370Apache-2.0AuthenticationCryptography azure_jwtA simple JWT validator for Microsoft Azure Id tokens.1,104,081MITAuthentication spiffeCore SPIFFE identity types and Workload API sources1,074,279Apache-2.0AuthenticationNetwork programming spake2The SPAKE2 password-authenticated key-exchange algorithm.1,067,025MIT OR Apache-2.0AuthenticationCryptography password-authPassword authentication library with a focus on simplicity and ease-of-use, including support for Argon2, PBKDF2, and scrypt…1,049,566MIT OR Apache-2.0AuthenticationCryptography smg-authAuthentication and authorization for control plane APIs1,007,831Apache-2.0AuthenticationWeb programming libgssapiA safe binding to gssapi963,786MITAPI bindingsAuthentication rs-firebase-admin-sdkFirebase Admin SDK for Rust920,323MITAPI bindingsAsynchronous aws-msk-iam-sasl-signerAWS MSK IAM SASL Signer905,611Apache-2.0Authentication libgssapi-sysA low level binding to gssapi889,667MITAPI bindingsAuthentication turnkey_api_key_stamperGenerate signatures over Turnkey API requests using a P-256 key.888,558Apache-2.0API bindingsAuthentication rsaslThe Rust SASL framework, aimed at both middleware-style protocol implementation and application code. Designed to make SASL…869,605Apache-2.0 OR MITAPI bindingsAuthentication windows-permissionsSafe Rust bindings to Windows permissions APIs840,161MITAPI bindingsAuthentication libnssRust bindings for creating libnss modules833,379LGPL-3.0API bindingsAuthentication tame-oauthA (very) simple oauth 2.0 library801,910MIT OR Apache-2.0Authentication pam-sysFFI wrappers for the Linux Pluggable Authentication Modules (PAM)796,319MIT OR Apache-2.0API bindingsAuthentication tonic-async-interceptorAsync variant of Tonic's interceptor function783,748MITAsynchronousAuthentication hyper-proxy2A proxy connector for Hyper-based applications743,920MITAsynchronousAuthentication alcoholic_jwtLibrary for validation of RS256 JWTs690,492GPL-3.0-or-laterAuthentication actix-web-grantsAuthorization extension `actix-web` to protect your endpoints658,343MIT OR Apache-2.0Authentication ambient-idDetects ambient OIDC credentials in a variety of environments648,947MIT OR Apache-2.0AsynchronousAuthentication machineid-rsGet an encrypted unique MachineID/HWID/UUID. Inspired by .Net DeviceId.643,836MIT OR Apache-2.0AccessibilityAuthentication samaelA SAML2 library for Rust545,876MITAuthentication diqwestTrait to extend reqwest for digest auth flow.496,722MITAuthenticationCryptography libreauthCollection of user authentication tools.484,614CECILL-C OR CECILL-2.1AuthenticationCryptography protect-endpoints-proc-macroA proc-macro way to protect your endpoints445,604MIT OR Apache-2.0Authentication sha-cryptPure Rust implementation of the SHA-crypt password hashing algorithm based on SHA-256/SHA-512 as implemented by the POSIX crypt C…436,808MIT OR Apache-2.0AuthenticationCryptography yubikeyPure Rust cross-platform host-side driver for YubiKey devices from Yubico with support for hardware-backed public-key decryption…433,210BSD-2-ClauseAPI bindingsAuthentication mail-authDKIM, ARC, SPF and DMARC library for Rust414,284Apache-2.0 OR MITAuthenticationEmail wascapWascap - wasmCloud Capabilities. Library for extracting, embedding, and validating claims403,012Apache-2.0AuthenticationCryptography blsfulBLS signature implementation according to the IETF spec on the BLS12-381 curve.392,394MIT OR Apache-2.0AlgorithmsAuthentication google-authenticatorThis Rust crate can be used to interact with the Google Authenticator mobile app for 2-factor-authentication.384,060MITAlgorithmsAuthentication sshcertsA library for parsing, verifying, and creating SSH Certificates332,789non-standardAuthentication oauth-credentialsTypes for representing the credential pairs of OAuth 1.0.298,070MIT OR Apache-2.0Authentication actix-grants-proc-macroA proc-macro way to validate user permissions for `actix-web-grants` crate.292,780MIT OR Apache-2.0Authentication zitadelAn implementation of ZITADEL API access and authentication in Rust.268,867MIT OR Apache-2.0API bindingsAuthentication oauth1-requestYet yet yet another OAuth 1.0 client library.265,531MIT OR Apache-2.0Authentication sequoia-netNetwork services for OpenPGP254,656LGPL-2.0-or-laterAuthenticationCryptography workosOfficial Rust SDK for the WorkOS API252,596MITAPI bindingsAuthentication gouthThis library provides auto-renewed tokens for GCP service authentication.248,636MITAuthentication openpgp-cert-dShared OpenPGP Certificate Directory245,472MITAuthenticationCaching zkryptiumRust crypto library for zero-knowledge proofs244,652Apache-2.0AuthenticationCryptography sequoia-cert-storeA certificate database interface.241,904LGPL-2.0-or-laterAuthenticationCommand line utilities spire-apiRust gRPC client for the SPIRE APIs229,835Apache-2.0AuthenticationNetwork programming sequoia-wotAn implementation of OpenPGP's web of trust.224,581LGPL-2.0-or-laterAuthenticationCommand line utilities qcs-api-client-grpcgRPC client for the QCS API222,480Apache-2.0API bindingsAuthentication qcs-api-client-commonCommon code for QCS API clients219,791Apache-2.0API bindingsAuthentication min_jwtMinimal JSON Web Token library213,587MIT OR Apache-2.0AuthenticationCryptography rusty_pasetoA type-driven, ergonomic alternative to JWT for secure stateless PASETO tokens.212,372MIT OR Apache-2.0AuthenticationCryptography provider-archiveLibrary for reading and writing wasmCloud capability provider archive files210,647Apache-2.0AuthenticationCryptography sequoia-autocryptAutocrypt support197,341LGPL-2.0-or-laterAuthenticationCryptography sequoia-sqCommand-line frontends for Sequoia193,134LGPL-2.0-or-laterAuthenticationCommand line utilities ockam_nodeThis crate provides an implementation of an Ockam [Ockam][main-ockam-crate-link] Node and is intended for use by crates that…187,989Apache-2.0AsynchronousAuthentication ockamEnd-to-end encryption and mutual authentication for distributed applications.181,401Apache-2.0AsynchronousAuthentication argonauticaIdiomatic Argon2 password hashing for Rust180,019MIT/Apache-2.0AlgorithmsAPI bindings ockam_coreCore types of the Ockam library.178,517Apache-2.0AsynchronousAuthentication ockam_vaultA software-only Ockam Vault implementation.177,310Apache-2.0AlgorithmsAsynchronous tame-oidcA (very) thin layer of OIDC like functionality174,699MIT OR Apache-2.0Authentication ockam_transport_tcpTCP Transport for the Ockam Routing Protocol.168,446Apache-2.0AsynchronousAuthentication checksumsTool for making/verifying checksums of directory trees159,802MITAuthenticationFilesystem json-proof-tokenA library implementation based on the new JOSE Working Group draft specifications: JSON Web Proof (JWP), JSON Proof Token (JPT)…159,496Apache-2.0AuthenticationCryptography appattestVerification of Apple App Attestations and Assertions, to help enforce iOS App Integrity Checks157,254MITAuthenticationCryptography ssh-encoding-fork-artiPure Rust implementation of SSH data type decoders/encoders as described in RFC4251153,851Apache-2.0 OR MITAuthenticationCryptography ssh-key-fork-artiPure Rust implementation of SSH key file format decoders/encoders as described in RFC4251/RFC4253 and OpenSSH key formats, as…153,750Apache-2.0 OR MITAuthenticationCryptography spiffe-rustlsSPIFFE-based mutual TLS integration for rustls147,577Apache-2.0AuthenticationNetwork programming aws-rds-signerA Rust library for generating AWS IAM authentication tokens for Amazon RDS database connections147,408MITAPI bindingsAuthentication scim-serverA comprehensive SCIM 2.0 server library for Rust with multi-tenant support and type-safe operations144,757MITAPI bindingsAuthentication rusty_paserkPlatform Agnostic Serializable Keys (PASERK) is an extension on PASETO for key management141,393MITAuthenticationCryptography brokerReal-time BaaS (Backend as a Service)139,921MITAuthenticationDatabase implementations yubico_ngYubikey client API library136,431MIT OR Apache-2.0Authentication ockam_transport_websocketWebSocket Transport for the Ockam Routing Protocol.135,232Apache-2.0AsynchronousAuthentication ic-vetkeysA set of tools designed to help canister developers integrate vetKeys into their Internet Computer (ICP) applications133,929Apache-2.0API bindingsAuthentication djangohashersA Rust port of the password primitives used in Django project.133,579BSD-3-ClauseAlgorithmsAuthentication aliri_oauth2JWT authorization based on validating OAuth2 scopes132,166MIT OR Apache-2.0Authentication ffsendEasily and securely share files from the command line. A fully featured Send client.129,190GPL-3.0AuthenticationCommand-line interface ockam_executorOckam async executor crate127,652Apache-2.0AlgorithmsAsynchronous jsonwebtokens-cognitoDecodes and verifies Json Web Tokens issued by AWS Cognito117,339MITAuthentication ockam_identityOckam is a library for building devices that communicate securely, privately and trustfully with cloud services and other devices.116,469Apache-2.0AuthenticationCryptography axum-keycloak-authProtect axum routes with a JWT emitted by Keycloak.112,452MIT OR Apache-2.0AuthenticationWeb programming pamSafe Rust wrappers for PAM authentication109,616MIT OR Apache-2.0Authentication challenge_responsePerform HMAC-SHA1 and OTP challenges with YubiKey, OnlyKey and NitroKey, in pure Rust.109,420MIT OR Apache-2.0Authentication balloon-hashPure Rust implementation of the Balloon password hashing function108,431MIT OR Apache-2.0AuthenticationCryptography csrfCSRF protection primitives106,816MITAuthenticationCryptography aliri_traitsToken-based authorization with authorities that verify access grants104,926MIT OR Apache-2.0Authentication ockam_key_exchange_xxThe Ockam Noise XX implementation.104,329Apache-2.0AsynchronousAuthentication sshkey-attestFIDO SK SSH Key Attestation100,962MPL-2.0AuthenticationCryptography graph-rs-sdkRust SDK Client for Microsoft Graph and Microsoft Identity Platform100,688MITAuthenticationWeb programming::HTTP client ockam_transport_bleBluetooth Low Energy (BLE) Transport for the Ockam Routing Protocol.100,037Apache-2.0AsynchronousAuthentication aliri_towerTower middleware for interacting with `aliri` authorities99,440MIT OR Apache-2.0AuthenticationWeb programming graph-oauthRust SDK Client for Microsoft Identity Platform98,343MITAuthenticationWeb programming::HTTP client ockam_apiOckam's request-response API96,532Apache-2.0AsynchronousAuthentication u2fRust FIDO U2F Library96,479MIT OR Apache-2.0Authentication ledger-zondax-genericLedger Hardware Wallet - Common APDU Protocol Types94,700Apache-2.0AuthenticationCryptography rouxSimple and (a)synchronous Reddit API wrapper94,580MITAPI bindingsAuthentication graph-errorGraph Api error types and handling for the graph-rs-sdk crate93,178MITAuthenticationWeb programming::HTTP client ockam_key_exchange_coreThe Ockam Key Exchange trait.89,442Apache-2.0AsynchronousAuthentication poem-grantsAuthorization extension for `poem` to protect your endpoints89,296MIT OR Apache-2.0Authentication ockam_channelChannel is an abstraction responsible for sending messages (usually over the network) in encrypted and authenticated way.89,177Apache-2.0AlgorithmsAsynchronous ockam-ffiFFI layer for ockam_vault.88,987Apache-2.0API bindingsAsynchronous captchaforge[DO NOT USE — UNDER ACTIVE DEVELOPMENT, NOT PRODUCTION-READY] Captcha solver scaffolding for Firefox + BiDi-driven browsers. The…88,614MIT OR Apache-2.0AuthenticationWeb programming mediawikiA MediaWiki client library86,627MIT OR Apache-2.0API bindingsAuthentication ockam_key_exchange_x3dhThe Ockam X3DH implementation.86,334Apache-2.0AsynchronousAuthentication ucanImplement UCAN-based authorization with conciseness and ease!86,306Apache-2.0AuthenticationCryptography pam-bindingsSimplified PAM module creation in Rust83,499MITAuthenticationExternal FFI bindings ockam_commandEnd-to-end encryption and mutual authentication for distributed applications.83,351Apache-2.0AsynchronousAuthentication signature_blsThe Ockam BLS signature impementation.81,644Apache-2.0AlgorithmsAsynchronous pam-clientApplication API wrapper to Pluggable Authentication Modules (PAM)80,510MPL-2.0API bindingsAuthentication srpPure Rust implementation of the Secure Remote Password (SRP) password-authenticated key exchange (PAKE) algorithm as described in…80,476MIT OR Apache-2.0AuthenticationCryptography gcp-saGoogle Cloud Platform Service Account OAuth authentication abstraction79,823MITAuthentication propelauthA Rust crate for managing authentication and authorization with support for multi-tenant / B2B products, powered by PropelAuth79,688MITAuthentication iam-rsComplete Rust library for parsing, validating, and evaluating IAM policies. Provider-agnostic authorization engine with full AWS…77,184MITAPI bindingsAuthentication ockam_multiaddrAn implementation of multiformats.io/multiaddr75,871Apache-2.0AsynchronousAuthentication stytchStytch Rust client74,848MITAPI bindingsAuthentication polypletsSecurity primitives to verify origin of service calls in Fluence network74,645Apache-2.0Authentication sos-sdkDistributed, encrypted database for private secrets.72,856MIT OR Apache-2.0AuthenticationCryptography::Cryptocurrencies async-oauth2An asynchronous OAuth2 flow implementation.72,744MIT OR Apache-2.0AuthenticationWeb programming ffsend-apiA fully featured Firefox Send API client.72,532MITAPI bindingsAuthentication mcfPure Rust implementation of the Modular Crypt Format (MCF) which is used to store password hashes in the form `${id}$...`72,361Apache-2.0 OR MITAuthenticationCryptography aliri_axumAxum for interacting with `aliri` authorities72,025MIT OR Apache-2.0AuthenticationWeb programming reqwest-oauth1Add OAuth1 signature to reqwest with oauth1-request.71,017MIT OR Apache-2.0AuthenticationWeb programming::HTTP client indy-data-typesCommon data types for Hyperledger Indy (https://www.hyperledger.org/projects), which provides a distributed-ledger-based…68,853Apache-2.0AuthenticationCryptography ockam_macrosEnd-to-end encryption and mutual authentication for distributed applications.67,643Apache-2.0AsynchronousAuthentication prs-libSecure, fast & convenient password manager CLI with GPG & git sync67,592LGPL-3.0AuthenticationCommand line utilities ockam_transport_udpUDP Transport for the Ockam Routing Protocol.66,300Apache-2.0AsynchronousAuthentication ockam_transport_udsUnix Domain Socket (UDS) Transport for the Ockam Routing Protocol66,241Apache-2.0AsynchronousAuthentication check_elevationCheck if the current process is elevated. A successor to the `is_elevated` crate. Now no_std!65,403BSD-2-ClauseAuthenticationDevelopment tools webauthn-rs-device-catalogWebauthn RS Device Catalog63,297MPL-2.0AuthenticationWeb programming mc-attestation-verifierSGX Enclave Attestation Report Verification62,982Apache-2.0AuthenticationNo standard library oxide-auth-axumA OAuth2 server library for Axum featuring a set of configurable and pluggable backends.62,532MIT OR Apache-2.0AuthenticationWeb programming::HTTP server ockam_vault_awsAn AWS KMS Ockam Vault implementation.61,257Apache-2.0AlgorithmsAsynchronous product-os-securityProduct OS : Security provides a suite of helper tools to easily perform cryptographic operations including generating hashes,…60,623GPL-3.0-onlyAuthenticationCryptography firestore-db-and-authThis crate allows easy access to your Google Firestore DB via service account or OAuth impersonated Google Firebase Auth…59,057MITAPI bindingsAuthentication djpassA command-line tool to generate and verify passwords used in Django project.58,630BSD-3-ClauseAlgorithmsAuthentication ockam_vault_coreThe Ockam Vault trait.57,739Apache-2.0AlgorithmsAsynchronous runeauthRuneauth - Simple Extendable Cookies57,705MITAuthenticationCryptography ledger-transport-hidapiLedger Hardware Wallet - HID Transport57,371Apache-2.0AuthenticationCryptography sequoia-gpg-agentA library for interacting with GnuPG's gpg-agent57,283LGPL-2.0-or-laterAuthenticationCryptography noosphere-cliReference client and pedagogical tool to demonstrate the principles of the Noosphere protocol56,152MIT OR Apache-2.0AuthenticationFilesystem nostro2Nostro2 is a simple toolset for interacting with the Nostr protocol.55,810MITAuthenticationCryptography greentic-secrets-specCanonical traits and data models for Greentic secrets (read/write, versioning, metadata).55,467MITAuthenticationConfiguration greentic-secrets-apiShared traits and types for Greentic secrets backends.55,034MITAuthenticationConfiguration greentic-secrets-coreCore runtime and backend orchestration for Greentic secrets.54,839MITAuthenticationConfiguration didwebvh-rsImplementation of the did:webvh method in Rust53,678Apache-2.0AuthenticationCryptography signature_bbs_plusThe Ockam BBS+ signature impementation.53,666Apache-2.0AlgorithmsAsynchronous greentic-secrets-provider-devLocal development backend for the Greentic secrets core.53,037MITAuthenticationConfiguration signature_coreSignature core types of the Ockam library.51,988Apache-2.0AlgorithmsAsynchronous google-authzThis library provides auto-renewed tokens for Google service authentication.51,428MIT OR Apache-2.0Authentication