This online tool allows you to generate the hash sha224 of any string.
SHA224 length is 56 characters
Hash available
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What is SHA-224?
SHA-224 (Secure Hash Algorithm 224-bit) is a member of the SHA-2 cryptographic hash function family designed by the National Security Agency (NSA). It is a truncated version of the SHA-256 algorithm, providing a 224-bit hash value. SHA-224 was specifically created to provide a security level equivalent to the Triple-DES (3DES) algorithm, making it suitable for applications that require a smaller hash size than 256 bits while maintaining the strong security properties of the SHA-2 family.
How does SHA-224 hash work?
The SHA-224 algorithm follows a structure similar to SHA-256, utilizing a Merkle-Damgård construction:
- Padding and Initialization: The input message is padded to ensure its length is a multiple of 512 bits, and the original message length is appended. It initializes eight 32-bit working variables (registers) using distinct initial hash values that differ from those used in SHA-256 to prevent length-extension attacks.
- Message Processing: The message is processed in 512-bit blocks. Each block undergoes 64 rounds of operations, involving logical functions, bitwise shifts, and rotations (using non-linear functions such as CH, MAJ, and XOR).
- Finalization: After the final block is processed, the state of the registers is concatenated.
- Truncation: Unlike SHA-256, which keeps all 256 bits, SHA-224 discards the last 32 bits of the output to produce the final 224-bit digest.
Key Characteristics
- Security Level: It provides 112 bits of security, which is considered robust for many modern applications that do not require the full 128-bit security level of SHA-256 or SHA-512.
- Collision Resistance: Due to its underlying SHA-256 architecture, it is highly resistant to collision attacks, making it a reliable choice for digital signatures and data integrity verification.
- Efficiency: It is highly efficient on both 32-bit and 64-bit hardware architectures, serving as a balanced middle ground for systems where memory constraints or specific protocol requirements limit the use of longer hash digests.
