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author | Justus Winter <justus@sequoia-pgp.org> | 2019-05-20 12:48:42 +0200 |
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committer | Justus Winter <justus@sequoia-pgp.org> | 2019-05-20 13:39:41 +0200 |
commit | d7c1901c28d6e51390f7e50c85da68ecfca31642 (patch) | |
tree | 7f26119172e20a1847b66a2528aff40535d31ed9 /openpgp/src/crypto/s2k.rs | |
parent | 37008e9c8b925ce541412d3a57c25d310af88bb9 (diff) |
openpgp: Document the choice of default hash algorithm.
Diffstat (limited to 'openpgp/src/crypto/s2k.rs')
-rw-r--r-- | openpgp/src/crypto/s2k.rs | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/openpgp/src/crypto/s2k.rs b/openpgp/src/crypto/s2k.rs index 7c10781e..7f192381 100644 --- a/openpgp/src/crypto/s2k.rs +++ b/openpgp/src/crypto/s2k.rs @@ -60,6 +60,11 @@ impl Default for S2K { let mut salt = [0u8; 8]; Yarrow::default().random(&mut salt); S2K::Iterated { + // SHA2-256, being optimized for implementations on + // architectures with a word size of 32 bit, has a more + // consistent runtime across different architectures than + // SHA2-512. Furthermore, the digest size is large enough + // for every cipher algorithm currently in use. hash: HashAlgorithm::SHA256, salt: salt, iterations: 26214400, // XXX: Calibrate somehow. |