| 21. | This property can be used to break naive authentication schemes based on hash functions.
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| 22. | Cryptographic hash functions are usually designed to be collision resistant.
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| 23. | Contrary to its name, it does not use hash functions.
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| 24. | A common technique uses Block ciphers and cryptographic hash functions.
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| 25. | The Merkle signature scheme however only depends on the existence of secure hash functions.
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| 26. | Assume that the hash function h ( k ) returns a string of bits.
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| 27. | The primitive can be used both as a hash function and a stream cipher.
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| 28. | Like most hash functions, MD5 is neither encryption nor encoding.
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| 29. | The two hash functions should be independent and have no correlation to each other.
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| 30. | Essentially it uses a hash function to generate the keystream.
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