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Add an error set

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This commit is contained in:
Rocknest 2020-09-16 01:58:48 +03:00
parent 988fc6f9d1
commit c35703825f
1 changed files with 9 additions and 1 deletions
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10
lib/std/crypto/pbkdf2.zig
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@ -36,6 +36,14 @@ const maxInt = std.math.maxInt;
// Based on Apple's CommonKeyDerivation, based originally on code by Damien Bergamini.
pub const Pbkdf2Error = error{
/// At least one round is required
TooFewRounds,
/// Maximum length of the derived key is `maxInt(u32) * Prf.mac_length`
DerivedKeyTooLong,
};
/// Apply PBKDF2 to generate a key from a password.
///
/// PBKDF2 is defined in RFC 2898, and is a recommendation of NIST SP 800-132.
@ -54,7 +62,7 @@ const maxInt = std.math.maxInt;
/// the derivedKey. It is common to tune this parameter to achieve approximately 100ms.
///
/// Prf: Pseudo-random function to use. A common choice is `std.crypto.auth.hmac.HmacSha256`.
pub fn pbkdf2(derivedKey: []u8, password: []const u8, salt: []const u8, rounds: u32, comptime Prf: type) !void {
pub fn pbkdf2(derivedKey: []u8, password: []const u8, salt: []const u8, rounds: u32, comptime Prf: type) Pbkdf2Error!void {
if (rounds < 1) return error.TooFewRounds;
const dkLen = derivedKey.len;