info > EVP_CIPHER-CHACHA(7)

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📛 NAME

EVP_CIPHER-CHACHA — The CHACHA EVP_CIPHER implementations

🚀 Quick Reference

Use Case	Command / API	Description
🔑 Symmetric encryption	EVP_CIPHER_fetch(NULL, "ChaCha20", NULL)	Encrypt/decrypt with the ChaCha20 stream cipher
🔐 Authenticated encryption	EVP_CIPHER_fetch(NULL, "ChaCha20-Poly1305", NULL)	Encrypt with integrated authentication (AEAD)
⚙️ Get cipher parameters	EVP_CIPHER_get_params()	Retrieve IV length, key size, etc.

📖 DESCRIPTION

Support for CHACHA symmetric encryption using the EVP_CIPHER API.

🏷️ Algorithm Names

The following algorithms are available in the default provider:

• ChaCha20 — stream cipher
• ChaCha20-Poly1305 — authenticated encryption with Poly1305 MAC

⚙️ Parameters

This implementation supports the parameters described in PARAMETERS in EVP_EncryptInit(3).

📚 SEE ALSO

• provider-cipher(7)
• OSSL_PROVIDER-default(7)

©️ COPYRIGHT

Copyright 2021 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the Apache License 2.0 (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at https://www.openssl.org/source/license.html.

📛 NAME 🚀 Quick Reference 📖 DESCRIPTION 📚 SEE ALSO ©️ COPYRIGHT