EVP_CIPHER-IDEA(7ossl)

📦
version 3.5.9 · 8 versions
, in alpine 3.23, alpine 3.24

💜 EVP_CIPHER-IDEA 💜

okay so bestie, welcome to the EVP_CIPHER-IDEA page — that's the 7ossl manual, aka the OpenSSL one, and it's honestly a little gem. it's short, it's sweet, it's giving "legacy but iconic." let's get into it 🎀

✨ NAME ✨

EVP_CIPHER-IDEA — the IDEA EVP_CIPHER implementations, fr fr. that's the whole vibe. one line, no notes. 👑

🌸 DESCRIPTION 🌸

so basically: this page is all about support for IDEA symmetric encryption using the EVP_CIPHER API. that's it, that's the plot. symmetric encryption, IDEA flavor, accessed through the EVP_CIPHER API like a normal person. 💅

🦋 Algorithm Names 🦋

lowkey the most important part: the following algorithms are available in the legacy provider. yes, legacy — noted, remembered, respectfully. 🫶

  • "IDEA-ECB"
  • "IDEA-CBC"
  • "IDEA-OFB" or "IDEA-OFB64"
  • "IDEA-CFB" or "IDEA-CFB64"

that's four bullets but six names, because OFB and CFB each get a lil alias situation going on. not me pointing that out, but also yes me pointing that out. 😭

🧚 Parameters 🧚

this implementation supports the parameters described in "PARAMETERS" in EVP_EncryptInit(3). so if you're wondering "wait, what params though?" — bestie, that's a different page, go read EVP_EncryptInit(3). iykyk. ✨

🌈 SEE ALSO 🌈

go read these next, they're literally the supporting cast:

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>. ⭐

please actually read the license, bestie, it's not a suggestion, it's a whole condition. 💀

and that's the page!! mwah 💋

OpenSSL 3.5.9 · 2026-09-29 · that's EVP_CIPHER-IDEA(7ossl), signing off — stay encrypted, stay iconic, slay 💖🦋🌸

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