SeND Hash Threat Analysis
S. Ananda Krishnan, Ana Kukec, Sheng Jiang
Abstract
S. Ananda Krishnan, Ana Kukec, Sheng Jiang
Abstract
This document analysis the use of hashes in SeND, possible threats and the impact of recent attacks on hash functions used by SeND. Current SeND specification [rfc3971] uses SHA-1 [sha-1] hash algorithm and PKIX certificates [rfc3280] and does not provide support for the hash algorithm agility. Based on previous analysis, this document suggests multiple hash support that should be included in the SeND update specification.
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This document analysis the use of hashes in SeND, possible threats and the impact of recent attacks on hash functions used by SeND. Current SeND specification [rfc3971] uses SHA-1 [sha-1] hash algorithm and PKIX certificates [rfc3280] and does not provide support for the hash algorithm agility. Based on previous analysis, this document suggests multiple hash support that should be included in the SeND update specification.
Key concepts: Hash function, SHA-2, Hash chain, Secure Hash Algorithm, Computer science, Merkle tree, Hash tree, Double hashing