Switch crate-by-crate without hunting through the full API docs. This index
covers 35 migration guides.
Each guide shows the smallest useful diff: dep change, import change,
and call site change.
If you are evaluating rscrypto, start with the crate you already use.
The guide will tell you whether the migration is a one-line replacement, a small
API shape change, or not a good fit.
From
To
Status
crcCrc16Ccitt, Crc16Ibm, Crc24OpenPgp, Crc32, Crc32C, Crc64, Crc64NvmeVerified against crc 3.4.0
crc-fastCrc32, Crc32C, Crc64, Crc64Nvme (catalogue subset)Verified against crc-fast 1.10.0
crc32fastCrc32Output covered by CRC-32 oracle/property tests
crc32cCrc32COutput covered by CRC-32C oracle/property tests
crc64fastCrc64, Crc64Nvme (covers crc64fast-nvme aside)Verified against crc64fast 1.1.0; NVMe oracle coverage uses crc-fast 1.10.0
From
To
Status
blake3Blake3Verified against blake3 1.8.5
sha2Sha224, Sha256, Sha384, Sha512, Sha512_256Verified against sha2 0.11.0
sha3Sha3_224, Sha3_256, Sha3_384, Sha3_512, Shake128, Shake256, Cshake128, Cshake256Verified against sha3 0.12.0
blake2Blake2b256, Blake2b512, Blake2s128, Blake2s256Verified against blake2 0.11.0-rc.6
ascon-hashAsconHash256, AsconXof, AsconCxof128Verified against ascon-hash 0.4.0
xxhash-rustXxh3, Xxh3_128, Xxh3Hasher, Xxh3_128Hasher, Xxh3BuildHasherVerified against xxhash-rust 0.8.16
twox-hashXxh3, Xxh3_128, Xxh3Hasher, Xxh3_128Hasher, Xxh3BuildHasherAPI migration guidance; XXH3 output covered by xxhash-rust oracle tests
rapidhashRapidHash, RapidHash128, RapidStreamHasher, RapidHasher, RapidBuildHasherVerified against rapidhash 4.5.1
From
To
Status
hmacHmacSha256, HmacSha384, HmacSha512, HmacSha3_224, HmacSha3_256, HmacSha3_384, HmacSha3_512Verified against hmac 0.13.0 and RustCrypto SHA-3 digests
hkdfHkdfSha256, HkdfSha384, HkdfSha512Verified against hkdf 0.13.0
pbkdf2Pbkdf2Sha256, Pbkdf2Sha512Verified against pbkdf2 0.13.0
sha3-kmacKmac128, Kmac256KMAC128/256 covered by NIST and tiny-keccak; KMAC256 also has Wycheproof coverage
tiny-keccakKmac128, Kmac256, Cshake128, Cshake256Verified against tiny-keccak 2.0.2
From
To
Status
aes-gcmAes128Gcm, Aes256GcmVerified against aes-gcm 0.10.3
aes-gcm-sivAes128GcmSiv, Aes256GcmSivVerified against aes-gcm-siv 0.11.1
chacha20poly1305ChaCha20Poly1305, XChaCha20Poly1305Verified against chacha20poly1305 0.10.1
ascon-aeadAsconAead128Verified against ascon-aead 0.5.2
aegisAegis256Verified against aegis 0.9.12
Signatures + Key Exchange
From
To
Status
p256p384EcdsaP256SecretKey, EcdsaP384SecretKey, EcdsaP256PublicKey, EcdsaP384PublicKey, raw/DER signaturesSigning and verification tested against RustCrypto p256 0.14.0 / p384 0.13.1
ed25519-dalekEd25519SecretKey, Ed25519PublicKey, Ed25519Signature, Ed25519KeypairVerified against ed25519-dalek 2.2.0
rsaRsaPublicKey, RsaPrivateKey, RSA-PSS, RSASSA-PKCS1-v1_5, OAEPPartial; verified through CAVP, Wycheproof, and RustCrypto/ring/OpenSSL oracles
x25519-dalekX25519SecretKey, X25519PublicKey, X25519SharedSecretVerified against x25519-dalek 2.0.1
From
To
Status
argon2Raw Argon2{d,i,id} KDFs; bounded Argon2idPassword records
Verified against argon2 0.6.0-rc.8
scryptRaw Scrypt KDF; bounded ScryptPassword records
Verified against scrypt 0.12.0
From
To
Status
aws-lc-rsAEAD, SHA-2, HMAC, HKDF, PBKDF2, ECDSA, Ed25519, X25519, RSA verify
Partial; shape-compatible surfaces only
aws-lc-sysnone directly
Not a direct migration; replace the safe wrapper API instead
dryocEd25519, X25519, BLAKE2, Argon2id/Argon2i-adjacent surfaces
Partial; libsodium-style APIs are not one-to-one
ringAEAD, SHA-2, HMAC, HKDF, PBKDF2, ECDSA, Ed25519, RSA verify
Partial; ring is protocol-shaped in several areas
opensslselected hash, MAC, AEAD, RSA operations
Partial; rscrypto does not replace TLS, PKI, engines, or providers