EVP_SHA3_224(3)

💜 EVP_SHA3_224 — Secure Hash Algorithm 3 for EVP 💜

okay so bestie, welcome to the library functions manual for EVP_SHA3_224(3) — yes that's the page name, and yes we're gonna get into it. This is from the libcrypto library manual, and honestly? It's giving short-and-sweet crypto realness. Let's go. ✨

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🌸 NAME 🌸

EVP_sha3_224, EVP_sha3_256, EVP_sha3_384, EVP_sha3_512 — Secure Hash Algorithm 3 for EVP. That's the whole vibe. Four functions, one iconic little family. 🎀

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🦋 SYNOPSIS 🦋

Library: libcrypto

#include <openssl/evp.h>

const EVP_MD *
EVP_sha3_224(void);

const EVP_MD *
EVP_sha3_256(void);

const EVP_MD *
EVP_sha3_384(void);

const EVP_MD *
EVP_sha3_512(void);

Four functions, all returning a const EVP_MD *, all taking void. Literally no arguments, no drama. Periodt. 💅

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✨ DESCRIPTION ✨

So SHA-3 (that's Secure Hash Algorithm 3, iykyk) is a whole family of cryptographic hash functions, and it got standardized in NIST FIPS 202, first published in 2015. It's based on the Keccak algorithm — and ngl, Keccak is kind of the main character here. 👑

And here's the lineup, bestie:

• EVP_sha3_224() — implements SHA3-224, produces 224 bits of output from a given input.
• EVP_sha3_256() — implements SHA3-256, produces 256 bits of output from a given input.
• EVP_sha3_384() — implements SHA3-384, produces 384 bits of output from a given input.
• EVP_sha3_512() — implements SHA3-512, produces 512 bits of output from a given input.

See the pattern? The number in the name is literally the bit count of the output. No cap, it's that clean. 🧚 Each one just takes a given input and gives you back that many bits of hash. Slay.

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🫶 RETURN VALUES 🫶

Every single one of these functions returns a pointer to a static EVP_MD object implementing the hash function. That's it. That's the return value. Static object, pointer to it, done. 💀✨

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🔥 SEE ALSO 🔥

• evp(3)
• EVP_DigestInit(3)

Go read those next, bestie. They're the whole context for how you actually use an EVP_MD. 🦋

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⭐ STANDARDS ⭐

NIST FIPS 202 — the one and only. Iconic document, honestly. 👑

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and that's the page!! 🎀 tysm for reading, bestie — this one came from Debian, dated June 8, 2025, and that's the whole EVP_SHA3_224(3) experience. now go hash something and slay 💖🌷