package pbkdf2Import Pathcrypto/pbkdf2 (on go.dev)Dependency Relation
imports 4 packages, and imported by 0 packages
Involved Source Files Package pbkdf2 implements the key derivation function PBKDF2 as defined in RFC
2898 / PKCS #5 v2.0.
A key derivation function is useful when encrypting data based on a password
or any other not-fully-random data. It uses a pseudorandom function to derive
a secure encryption key based on the password.
While v2.0 of the standard defines only one pseudorandom function to use,
HMAC-SHA1, the drafted v2.1 specification allows use of all five FIPS Approved
Hash Functions SHA-1, SHA-224, SHA-256, SHA-384 and SHA-512 for HMAC. To
choose, you can pass the `New` functions from the different SHA packages to
pbkdf2.Key.
Package-Level Functions (only one)
Type Parameters:
Hash: hash.Hash Key derives a key from the password, salt and iteration count, returning a
[]byte of length keyLength that can be used as cryptographic key. The key is
derived based on the method described as PBKDF2 with the HMAC variant using
the supplied hash function.
For example, to use a HMAC-SHA-1 based PBKDF2 key derivation function, you
can get a derived key for e.g. AES-256 (which needs a 32-byte key) by
doing:
dk := pbkdf2.Key(sha1.New, []byte("some password"), salt, 4096, 32)
Remember to get a good random salt. At least 8 bytes is recommended by the
RFC.
Using a higher iteration count will increase the cost of an exhaustive
search but will also make derivation proportionally slower.
The pages are generated with Goldsv0.7.3-preview. (GOOS=linux GOARCH=amd64)
Golds is a Go 101 project developed by Tapir Liu.
PR and bug reports are welcome and can be submitted to the issue list.
Please follow @zigo_101 (reachable from the left QR code) to get the latest news of Golds.