name: DSA
full_form: Digital Signature Algorithm
context: exists several ways to prove characteristics indicating the security of DSA, as follows: One slightly modified version of DSA can be proven secure in RO model [15], by simply replacing the Hash(M) by Hash(r|M), where "|" means concatenation. It has been included in ISO/IEC 14888. If besides the hash function, the mod q (subgroup order) function is also assumed as a random oracle. Then DSA can be proven secure in RO model [15]. According to the above proof, it has been concluded that, if DSA and its variants can be broken by an existential forgery using an adaptatively chosen-message attack, then either: DL problem can be solved, or Hash function can be distinguished from ideal hash function, or Collisions can be found for "mod q" function. However, the above are all hard problems and no efficient algorithm is known to solve them, thus conclude a contradiction indicating that DSA is secure.
description: Digital Signature Algorithm (DSA) is a standard for digital signatures within the 3GPP specification. It ensures the authenticity and integrity of messages by using cryptographic techniques.
explanation: The context describes DSA as a specific algorithm used in telecommunications to secure data, making it a technology related to communication standards.
section_title: 8.9.2	Digital Signature Algorithm (DSA)
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