Understanding IDEA: Key Expansion & Block Cipher Structure 🔐

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IDEA (International Data Encryption Algorithm) | Complete Encryption Process in Detail with Diagrams
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IDEA algorithm theory -
1. IDEA was launched in 1990.
2. It was implemented in 1992 after underwent certain changes in names and capabilities.
3. IDEA is Quite strong, but not as popular as DES.
4. One popular email privacy technology known as Pretty Good Privacy (PGP) based on IDEA.
5. It is a Block Cipher.
6. Like DES it works on 64-bit plain text block.
7. The Key consists of 128 bits.
8. Idea is reversible like DES
9. Idea uses both diffusion and confusion for encryption

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