Crypto-encryption and encoding 4+

Support file import and key management for convenient and secure encryption

String Crypto is a professional text encryption and encoding application that provides military-grade security protection for your sensitive information.

Main Features:

AES-256-GCM Encryption
Uses military-grade AES-256-GCM encryption algorithm with authentication to ensure your data is secure and reliable. Supports custom keys for unique encryption results.

Base64 Encoding
Standard Base64 encoding and decoding functionality for data transmission and storage scenarios. Fast and efficient, supporting various text formats.

File Import
Import text to be encrypted directly from files without manual copy and paste. Supports importing plain text files from local file system and iCloud Drive, greatly improving work efficiency.

Key Management
Import keys from files to avoid manual input errors. Provides key plain text viewing function - click the eye icon to toggle between show and hide states, ensuring correct key input.

History Records
Automatically saves the last 10 operation records, including the algorithm used, operation type, and key hints. Convenient for reviewing and managing your encryption history.

Bilingual Support
Full support for Simplified Chinese and English interfaces, automatically switching based on system language, providing localized experience for global users.

Dark Mode
Perfectly adapts to iOS light and dark modes, providing comfortable visual experience in any environment.

Security Features:

Local processing - all encryption operations completed locally on device, data not uploaded to cloud
Uses Apple official CryptoKit framework, secure and reliable
Keys never stored in plain text
History records only save first 4 characters of key as hint

Use Cases:

Protect personal privacy information
Encrypt sensitive text and notes
Securely transmit important data
Password and account information encryption
File content protection

Why Choose String Crypto:

Clean and intuitive interface design
Powerful encryption algorithm support
Convenient file import functionality
Comprehensive key management
100% local processing, protecting privacy
Completely free, no ads
Continuous updates and maintenance

Download String Crypto now to provide professional security protection for your sensitive information.

What's New:
Version 1.1
Added file import functionality, supporting import of text and keys from local and iCloud Drive
Added key plain text viewing functionality for better key management experience
Optimized settings page, reorganized function layout
Improved user interface, enhanced user experience
Fixed known issues, improved app stability

Privacy Policy:
This app does not collect any user data. All encryption and decryption operations are completed locally on the device and are not uploaded to any server. History records are only saved locally on the device and users can delete them at any time. The app does not contain any third-party tracking or analytics tools.