Preventing EFail Attacks with Client-Side WebAssembly: The Case of Swiss Post's IncaMail
Pascal Gerig,
Jämes Ménétrey,
Baptiste Lanoix
et al.
Abstract:Traditional email encryption schemes are vulnerable to EFail attacks, which exploit the lack of message authentication by manipulating ciphertexts and exfiltrating plaintext via HTML backchannels. Swiss Post's IncaMail, a secure email service for transmitting legally binding, encrypted, and verifiable emails, counters EFail attacks using an authenticatedencryption with associated data (AEAD) encryption scheme to ensure message privacy and authentication between servers. IncaMail relies on a trusted infrastruct… Show more
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