Module ciphers 

Block and stream ciphers.

The crate keeps primitive implementations grouped here and layers higher level composition (modes, hash, cprng) on top. This separation keeps the cipher modules focused on the algorithm cores and their direct key schedules rather than mixing protocol or framing concerns into each file.

Ct policy:

• new table-based cipher implementations must ship a corresponding Ct variant in the same module.
• table-free designs (for example pure ARX/bitwise constructions) may be exempt, but the exemption must be explicitly recorded in src/scrub.rs.

Modules

aes

AES (Rijndael, 128-bit block) — AES-128, AES-192, AES-256.

camellia

Camellia block cipher — CRYPTREC / ISO/IEC 18033-3 / RFC 3713.

cast128

CAST-128 / CAST5 block cipher — RFC 2144.

chacha20

ChaCha20 and XChaCha20 stream ciphers.

des

DES and Triple-DES (TDEA) implemented from FIPS PUB 46-3.

grasshopper

Kuznyechik (Grasshopper) block cipher — RFC 7801 / GOST R 34.12-2015.

magma

Magma (GOST R 34.12-2015) block cipher — RFC 8891.

present

PRESENT lightweight block cipher — CHES 2007 / ISO/IEC 29192-2.

rabbit

Rabbit stream cipher — RFC 4503.

salsa20

Salsa20 stream cipher — Daniel J. Bernstein’s original Snuffle design.

seed

SEED block cipher — RFC 4009 / RFC 4196.

serpent

Serpent block cipher — AES submission / FSE 1998.

simon

Simon family of lightweight block ciphers.

sm4

SM4 block cipher (formerly SMS4) — GM/T 0002-2012 / GB/T 32907-2016.

snow3g

SNOW 3G stream cipher core from the ETSI/SAGE v1.1 specification.

speck

Speck family of lightweight block ciphers.

twofish

Twofish block cipher — AES submission (1998).

zuc

ZUC-128 stream cipher — GM/T 0001.1 / ETSI SAGE ZUC specification v1.6.