Generate compact SHA3-224 hashes for space-constrained applications.
About
SHA3-224 produces a 224-bit hash using Keccak-f[1600] with capacity of 448 bits, providing compact hashes with 112-bit security suitable for space-constrained applications.
Specifications
Output Size224 bits
StandardFIPS 202
Standard Year2015
Origin Keccak submission to NIST SHA-3 competition
Origin Year 2008
Use Cases
—Compact digital signatures
—Resource-constrained environments
—Applications requiring <256-bit output
Frequently Asked Questions
Use SHA3-224 when you need a shorter 224-bit (28-byte) output to save bandwidth or storage space, while still maintaining 112-bit security. It's suitable for compact digital signatures, resource-constrained environments, and applications where the full 256-bit output is unnecessary.
SHA3-224 provides 112-bit collision resistance, which is currently secure against classical computers. However, 128-bit security is the modern recommended minimum. For long-term security (10+ years) or post-quantum considerations, SHA3-256 with 128-bit security is preferred.
SHA3-224 uses a capacity of 448 bits with rate of 1152 bits in the Keccak-f[1600] sponge. This is the highest capacity (most conservative security margin) among SHA-3 variants, providing strong security despite the shorter output length. SHA3-256 uses 512-bit capacity, SHA3-384 uses 768-bit, and SHA3-512 uses 1024-bit.