AesBridge Ruby

AesBridge is a modern, secure, and cross-language AES encryption library. It offers a unified interface for encrypting and decrypting data across multiple programming languages. Supports GCM, CBC, and legacy AES Everywhere modes.

This is the Python implementation of the core project.
👉 Main repository: https://github.com/mervick/aes-bridge

• 🔐 AES-256 encryption in GCM (recommended) and CBC modes
• 🌍 Unified cross-language design
• 📦 Compact binary format or base64 output
• ✅ HMAC Integrity: CBC mode includes HMAC verification
• 🔄 Backward Compatible: Supports legacy AES Everywhere format

gem install aes-bridge

require 'aes_bridge'

# Encrypting a string (GCM mode is used by default)
ciphertext = AesBridge.encrypt("My secret message", "MyStrongPass")
puts "Encrypted message (base64): #{ciphertext}"

# Decrypting the string (GCM mode)
plaintext = AesBridge.decrypt(ciphertext, "MyStrongPass")
puts "Decrypted message: #{plaintext}"

# Explicit GCM example
gcm_ciphertext = AesBridge.encrypt_gcm("Message for GCM", "GCMpassword")
gcm_plaintext = AesBridge.decrypt_gcm(gcm_ciphertext, "GCMpassword")
puts "GCM decrypted: #{gcm_plaintext}"

# CBC example
cbc_ciphertext = AesBridge.encrypt_cbc("Message for CBC", "CBCpassword")
cbc_plaintext = AesBridge.decrypt_cbc(cbc_ciphertext, "CBCpassword")
puts "CBC decrypted: #{cbc_plaintext}"

• AesBridge.encrypt(data, passphrase) Encrypts a string using AES-GCM (default). Returns: A base64-encoded string.

• AesBridge.decrypt(ciphertext, passphrase) Decrypts a base64-encoded string encrypted with AES-GCM.

• AesBridge.encrypt_gcm(data, passphrase) Encrypts a string using AES-GCM. Returns: A base64-encoded string.

• AesBridge.decrypt_gcm(ciphertext, passphrase) Decrypts a base64-encoded string encrypted with encrypt_gcm.

• AesBridge.encrypt_gcm_bin(data, passphrase) Returns encrypted binary data using AES-GCM.

• AesBridge.decrypt_gcm_bin(ciphertext, passphrase) Decrypts binary data encrypted with encrypt_gcm_bin.

• AesBridge.encrypt_cbc(data, passphrase) Encrypts a string using AES-CBC. HMAC is used for integrity verification. Returns: A base64-encoded string.

• AesBridge.decrypt_cbc(ciphertext, passphrase) Decrypts a base64-encoded string encrypted with encrypt_cbc and verifies HMAC.

• AesBridge.encrypt_cbc_bin(data, passphrase) Returns encrypted binary data using AES-CBC with HMAC.

• AesBridge.decrypt_cbc_bin(ciphertext, passphrase) Decrypts binary data encrypted with encrypt_cbc_bin and verifies HMAC.

⚠️ These functions are kept for backward compatibility only. Their usage is strongly discouraged in new applications.

• AesBridge.encrypt_legacy(data, passphrase) Encrypts a string in the legacy AES Everywhere format.

• AesBridge.decrypt_legacy(ciphertext, passphrase) Decrypts a string encrypted in the legacy AES Everywhere format.