= Full Domain Hash
{wiki=Full_Domain_Hash}
Full Domain Hash (FDH) is a cryptographic technique used primarily in digital signatures and other security applications. It refers to a hashing method that produces a hash value or digest representing the entire input domain, ensuring that the hash function generates a unique output for each unique input within that domain. \#\#\# Key Characteristics of Full Domain Hash: 1. **Unique Output**: For any unique input, the FDH generates a unique hash value.
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