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A hash generator supporting BLAKE2b and BLAKE2s algorithms with configurable keys, salts, and output lengths for data integrity verification and message authentication.
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Online CRC16 checksum tool to calculate 16-bit cyclic redundancy check values for text, Hex, and Base64 data to verify data integrity.
Caesar Cipher Encoder & Decoder
Easily encrypt and decrypt text using the Caesar cipher (shift cipher) with custom alphabets and shift values online.
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Encrypt or decrypt text using the classic polyalphabetic substitution algorithm. Ideal for cryptography learning and testing.
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When you need to verify that a file hasn't been tampered with, or generate a unique, irreversible fingerprint for a password, a reliable hashing tool is essential. The BLAKE hash calculator is based on the BLAKE algorithm family, converting input data of any length (such as text or files) into a fixed-length, unique hash value (also known as a message digest). The BLAKE algorithm was a finalist in the NIST SHA-3 competition, matching SHA-3 in security while delivering outstanding performance. This tool not only supports standard hash calculations but also allows you to configure a key to generate a Message Authentication Code (MAC) and add a salt to defend against rainbow table attacks. Finally, it outputs results in Hex, Base64, and Bytes formats.
Q: Which is faster and more secure, BLAKE2 or SHA-256?
A: BLAKE2 is faster than SHA-256 on most modern processors, especially in multi-core environments. Both are considered cryptographically secure, but as a finalist in the SHA-3 competition, BLAKE2's design underwent rigorous scrutiny and natively supports keys and salts, making it more functionally flexible.
Q: Can a BLAKE hash result be decrypted back to the original text?
A: No. Hashing is a one-way function, and it is impossible to reverse-engineer the original input from the result. It is primarily used for integrity verification and password storage, not for encryption and decryption.
Please ensure that the "Input Type" matches the actual format of your data. An incorrect selection (such as selecting "Plaintext" for Hex data) will result in an incorrect hash value. The key is used to generate the MAC; please keep it secure. It is recommended to use a random value of sufficient length for the salt. A longer hash output bit length lowers the probability of collisions but also consumes more storage space; please choose according to your actual security requirements.
For password storage scenarios, it is highly recommended to use the "Key" feature (using the password as the key, or using a derived key) combined with a random "Salt", which effectively defends against rainbow table attacks. A typical example: The input string is the plaintext password "myPassword123", select the BLAKE2b algorithm, set the input type to "Plaintext", leave the key blank or use an application key, set the output bits to 256, and add a random 16-byte salt. The resulting hash will be both unique and collision-resistant, representing a secure practice for storing user credentials.
